├── .gitattributes ├── .github └── workflows │ └── sync_issues.yml ├── .gitignore ├── .gitlab-ci.yml ├── .travis.yml ├── LICENSE.txt ├── License.txt ├── MutichannelGasSensor.cpp ├── MutichannelGasSensor.h ├── README.md ├── examples ├── GetVersion │ └── GetVersion.ino ├── I2C_Address │ └── I2C_Address.ino ├── RawData │ └── RawData.ino ├── ReadSensorValue_Grove │ └── ReadSensorValue_Grove.ino ├── ReadSensorValue_Xadow │ └── ReadSensorValue_Xadow.ino ├── UpdateFrimware │ ├── .DS_Store │ ├── UpdateFrimware.ino │ ├── bootloader_atmega168.h │ └── gpl.txt ├── calibration │ └── calibration.ino ├── factory_setting │ └── factory_setting.ino └── new_firmware │ └── new_firmware.ino ├── keywords.txt └── library.properties /.gitattributes: -------------------------------------------------------------------------------- 1 | # Auto detect text files and perform LF normalization 2 | * text=auto 3 | 4 | # Custom for Visual Studio 5 | *.cs diff=csharp 6 | *.sln merge=union 7 | *.csproj merge=union 8 | *.vbproj merge=union 9 | *.fsproj merge=union 10 | *.dbproj merge=union 11 | 12 | # Standard to msysgit 13 | *.doc diff=astextplain 14 | *.DOC diff=astextplain 15 | *.docx diff=astextplain 16 | *.DOCX diff=astextplain 17 | *.dot diff=astextplain 18 | *.DOT diff=astextplain 19 | *.pdf diff=astextplain 20 | *.PDF diff=astextplain 21 | *.rtf diff=astextplain 22 | *.RTF diff=astextplain 23 | -------------------------------------------------------------------------------- /.github/workflows/sync_issues.yml: -------------------------------------------------------------------------------- 1 | name: Automate Issue Management 2 | 3 | on: 4 | issues: 5 | types: 6 | - opened 7 | - edited 8 | - assigned 9 | - unassigned 10 | - labeled 11 | - unlabeled 12 | - reopened 13 | 14 | jobs: 15 | add_issue_to_project: 16 | runs-on: ubuntu-latest 17 | steps: 18 | - name: Add issue to GitHub Project 19 | uses: actions/add-to-project@v1.0.2 20 | with: 21 | project-url: https://github.com/orgs/Seeed-Studio/projects/17 22 | github-token: ${{ secrets.ISSUE_ASSEMBLE }} 23 | labeled: bug 24 | label-operator: NOT -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | ################# 2 | ## Eclipse 3 | ################# 4 | 5 | *.pydevproject 6 | .project 7 | .metadata 8 | bin/ 9 | tmp/ 10 | *.tmp 11 | *.bak 12 | *.swp 13 | *~.nib 14 | local.properties 15 | .classpath 16 | .settings/ 17 | .loadpath 18 | 19 | # External tool builders 20 | .externalToolBuilders/ 21 | 22 | # Locally stored "Eclipse launch configurations" 23 | *.launch 24 | 25 | # CDT-specific 26 | .cproject 27 | 28 | # PDT-specific 29 | .buildpath 30 | 31 | 32 | ################# 33 | ## Visual Studio 34 | ################# 35 | 36 | ## Ignore Visual Studio temporary files, build results, and 37 | ## files generated by popular Visual Studio add-ons. 38 | 39 | # User-specific files 40 | *.suo 41 | *.user 42 | *.sln.docstates 43 | 44 | # Build results 45 | 46 | [Dd]ebug/ 47 | [Rr]elease/ 48 | x64/ 49 | build/ 50 | [Bb]in/ 51 | [Oo]bj/ 52 | 53 | # MSTest test Results 54 | [Tt]est[Rr]esult*/ 55 | [Bb]uild[Ll]og.* 56 | 57 | *_i.c 58 | *_p.c 59 | *.ilk 60 | *.meta 61 | *.obj 62 | *.pch 63 | *.pdb 64 | *.pgc 65 | *.pgd 66 | *.rsp 67 | *.sbr 68 | *.tlb 69 | *.tli 70 | *.tlh 71 | *.tmp 72 | *.tmp_proj 73 | *.log 74 | *.vspscc 75 | *.vssscc 76 | .builds 77 | *.pidb 78 | *.log 79 | *.scc 80 | 81 | # Visual C++ cache files 82 | ipch/ 83 | *.aps 84 | *.ncb 85 | *.opensdf 86 | *.sdf 87 | *.cachefile 88 | 89 | # Visual Studio profiler 90 | *.psess 91 | *.vsp 92 | *.vspx 93 | 94 | # Guidance Automation Toolkit 95 | *.gpState 96 | 97 | # ReSharper is a .NET coding add-in 98 | _ReSharper*/ 99 | *.[Rr]e[Ss]harper 100 | 101 | # TeamCity is a build add-in 102 | _TeamCity* 103 | 104 | # DotCover is a Code Coverage Tool 105 | *.dotCover 106 | 107 | # NCrunch 108 | *.ncrunch* 109 | .*crunch*.local.xml 110 | 111 | # Installshield output folder 112 | [Ee]xpress/ 113 | 114 | # DocProject is a documentation generator add-in 115 | DocProject/buildhelp/ 116 | DocProject/Help/*.HxT 117 | DocProject/Help/*.HxC 118 | DocProject/Help/*.hhc 119 | DocProject/Help/*.hhk 120 | DocProject/Help/*.hhp 121 | DocProject/Help/Html2 122 | DocProject/Help/html 123 | 124 | # Click-Once directory 125 | publish/ 126 | 127 | # Publish Web Output 128 | *.Publish.xml 129 | *.pubxml 130 | 131 | # NuGet Packages Directory 132 | ## TODO: If you have NuGet Package Restore enabled, uncomment the next line 133 | #packages/ 134 | 135 | # Windows Azure Build Output 136 | csx 137 | *.build.csdef 138 | 139 | # Windows Store app package directory 140 | AppPackages/ 141 | 142 | # Others 143 | sql/ 144 | *.Cache 145 | ClientBin/ 146 | [Ss]tyle[Cc]op.* 147 | ~$* 148 | *~ 149 | *.dbmdl 150 | *.[Pp]ublish.xml 151 | *.pfx 152 | *.publishsettings 153 | 154 | # RIA/Silverlight projects 155 | Generated_Code/ 156 | 157 | # Backup & report files from converting an old project file to a newer 158 | # Visual Studio version. Backup files are not needed, because we have git ;-) 159 | _UpgradeReport_Files/ 160 | Backup*/ 161 | UpgradeLog*.XML 162 | UpgradeLog*.htm 163 | 164 | # SQL Server files 165 | App_Data/*.mdf 166 | App_Data/*.ldf 167 | 168 | ############# 169 | ## Windows detritus 170 | ############# 171 | 172 | # Windows image file caches 173 | Thumbs.db 174 | ehthumbs.db 175 | 176 | # Folder config file 177 | Desktop.ini 178 | 179 | # Recycle Bin used on file shares 180 | $RECYCLE.BIN/ 181 | 182 | # Mac crap 183 | .DS_Store 184 | 185 | 186 | ############# 187 | ## Python 188 | ############# 189 | 190 | *.py[co] 191 | 192 | # Packages 193 | *.egg 194 | *.egg-info 195 | dist/ 196 | build/ 197 | eggs/ 198 | parts/ 199 | var/ 200 | sdist/ 201 | develop-eggs/ 202 | .installed.cfg 203 | 204 | # Installer logs 205 | pip-log.txt 206 | 207 | # Unit test / coverage reports 208 | .coverage 209 | .tox 210 | 211 | #Translations 212 | *.mo 213 | 214 | #Mr Developer 215 | .mr.developer.cfg 216 | 217 | *.bin 218 | *.elf -------------------------------------------------------------------------------- /.gitlab-ci.yml: -------------------------------------------------------------------------------- 1 | build: 2 | tags: 3 | - nas 4 | script: 5 | - wget -c https://files.seeedstudio.com/arduino/seeed-arduino-ci.sh 6 | - chmod +x seeed-arduino-ci.sh 7 | - bash $PWD/seeed-arduino-ci.sh new_firmware:uno/new_firmware:servo:seeed_XIAO_m0/UpdateFrimware:uno/UpdateFrimware:servo:seeed_XIAO_m0/ReadSensorValue_Xadow:uno/ReadSensorValue_Xadow:servo:seeed_XIAO_m0 8 | 9 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | 2 | language: generic 3 | dist: bionic 4 | sudo: false 5 | cache: 6 | directories: 7 | - ~/arduino_ide 8 | - ~/.arduino15/packages/ 9 | 10 | before_install: 11 | - wget -c https://files.seeedstudio.com/arduino/seeed-arduino-ci.sh 12 | 13 | script: 14 | - chmod +x seeed-arduino-ci.sh 15 | - cat $PWD/seeed-arduino-ci.sh 16 | - bash $PWD/seeed-arduino-ci.sh new_firmware:uno/new_firmware:servo:seeed_XIAO_m0/UpdateFrimware:uno/UpdateFrimware:servo:seeed_XIAO_m0/ReadSensorValue_Xadow:uno/ReadSensorValue_Xadow:servo:seeed_XIAO_m0 17 | 18 | notifications: 19 | email: 20 | on_success: change 21 | on_failure: change 22 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | This file includes licensing information for arduino-cli 2 | 3 | Copyright (c) 2018 ARDUINO SA (www.arduino.cc) 4 | 5 | The software is released under the GNU General Public License, which covers the main body 6 | of the arduino-cli code. 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If not, see . 663 | 664 | Also add information on how to contact you by electronic and paper mail. 665 | 666 | If the program does terminal interaction, make it output a short 667 | notice like this when it starts in an interactive mode: 668 | 669 | Copyright (C) 670 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 671 | This is free software, and you are welcome to redistribute it 672 | under certain conditions; type `show c' for details. 673 | 674 | The hypothetical commands `show w' and `show c' should show the appropriate 675 | parts of the General Public License. Of course, your program's commands 676 | might be different; for a GUI interface, you would use an "about box". 677 | 678 | You should also get your employer (if you work as a programmer) or school, 679 | if any, to sign a "copyright disclaimer" for the program, if necessary. 680 | For more information on this, and how to apply and follow the GNU GPL, see 681 | . 682 | 683 | The GNU General Public License does not permit incorporating your program 684 | into proprietary programs. If your program is a subroutine library, you 685 | may consider it more useful to permit linking proprietary applications with 686 | the library. If this is what you want to do, use the GNU Lesser General 687 | Public License instead of this License. But first, please read 688 | . 689 | -------------------------------------------------------------------------------- /License.txt: -------------------------------------------------------------------------------- 1 | The MIT License (MIT) 2 | 3 | Copyright (c) 2015 Seeed Technology Inc. 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in 13 | all copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 21 | THE SOFTWARE. -------------------------------------------------------------------------------- /MutichannelGasSensor.cpp: -------------------------------------------------------------------------------- 1 | /* 2 | MutichannelGasSensor.cpp 3 | 2015 Copyright (c) Seeed Technology Inc. All right reserved. 4 | 5 | Author: Jacky Zhang 6 | 2015-3-17 7 | http://www.seeed.cc/ 8 | modi by Jack, 2015-8 9 | 10 | The MIT License (MIT) 11 | 12 | Copyright (c) 2015 Seeed Technology Inc. 13 | 14 | Permission is hereby granted, free of charge, to any person obtaining a copy 15 | of this software and associated documentation files (the "Software"), to deal 16 | in the Software without restriction, including without limitation the rights 17 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 18 | copies of the Software, and to permit persons to whom the Software is 19 | furnished to do so, subject to the following conditions: 20 | 21 | The above copyright notice and this permission notice shall be included in 22 | all copies or substantial portions of the Software. 23 | 24 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 25 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 26 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 27 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 28 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 29 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 30 | THE SOFTWARE. 31 | */ 32 | 33 | #include 34 | #include 35 | #include 36 | #include "MutichannelGasSensor.h" 37 | 38 | MutichannelGasSensor::MutichannelGasSensor() : __version(2), i2cAddress(0x19) { 39 | 40 | } 41 | /********************************************************************************************************* 42 | ** Function name: begin 43 | ** Descriptions: initialize I2C 44 | *********************************************************************************************************/ 45 | void MutichannelGasSensor::begin(int address) { 46 | __version = 1; // version 1/2 47 | r0_inited = false; 48 | 49 | Wire.begin(); 50 | i2cAddress = address; 51 | __version = getVersion(); 52 | } 53 | 54 | unsigned char MutichannelGasSensor::getVersion() { 55 | if (get_addr_dta(CMD_READ_EEPROM, ADDR_IS_SET) == 1126) { // get version 56 | __version = 2; 57 | _SERIAL.println("version = 2"); 58 | return 2; 59 | } 60 | 61 | __version = 1; 62 | _SERIAL.println("version = 1"); 63 | return 1; 64 | } 65 | 66 | void MutichannelGasSensor::begin() { 67 | begin(DEFAULT_I2C_ADDR); 68 | } 69 | 70 | /********************************************************************************************************* 71 | ** Function name: sendI2C 72 | ** Descriptions: send one byte to I2C Wire 73 | *********************************************************************************************************/ 74 | void MutichannelGasSensor::sendI2C(unsigned char dta) { 75 | Wire.beginTransmission(i2cAddress); // transmit to device #4 76 | Wire.write(dta); // sends one byte 77 | Wire.endTransmission(); // stop transmitting 78 | } 79 | 80 | 81 | unsigned int MutichannelGasSensor::get_addr_dta(unsigned char addr_reg) { 82 | START: 83 | Wire.beginTransmission(i2cAddress); 84 | Wire.write(addr_reg); 85 | Wire.endTransmission(); // stop transmitting 86 | delay(2); 87 | 88 | Wire.requestFrom(i2cAddress, 2); 89 | 90 | unsigned int dta = 0; 91 | 92 | unsigned char raw[10]; 93 | int cnt = 0; 94 | 95 | while (Wire.available()) { 96 | raw[cnt++] = Wire.read(); 97 | } 98 | 99 | if (cnt == 0) { 100 | goto START; 101 | } 102 | 103 | dta = raw[0]; 104 | dta <<= 8; 105 | dta += raw[1]; 106 | 107 | switch (addr_reg) { 108 | case CH_VALUE_NH3: 109 | 110 | if (dta > 0) { 111 | adcValueR0_NH3_Buf = dta; 112 | } else { 113 | dta = adcValueR0_NH3_Buf; 114 | } 115 | 116 | break; 117 | 118 | case CH_VALUE_CO: 119 | 120 | if (dta > 0) { 121 | adcValueR0_CO_Buf = dta; 122 | } else { 123 | dta = adcValueR0_CO_Buf; 124 | } 125 | 126 | break; 127 | 128 | case CH_VALUE_NO2: 129 | 130 | if (dta > 0) { 131 | adcValueR0_NO2_Buf = dta; 132 | } else { 133 | dta = adcValueR0_NO2_Buf; 134 | } 135 | 136 | break; 137 | 138 | default:; 139 | } 140 | return dta; 141 | } 142 | 143 | unsigned int MutichannelGasSensor::get_addr_dta(unsigned char addr_reg, unsigned char __dta) { 144 | 145 | START: 146 | Wire.beginTransmission(i2cAddress); 147 | Wire.write(addr_reg); 148 | Wire.write(__dta); 149 | Wire.endTransmission(); // stop transmitting 150 | delay(2); 151 | 152 | Wire.requestFrom(i2cAddress, 2); 153 | 154 | unsigned int dta = 0; 155 | 156 | unsigned char raw[10]; 157 | int cnt = 0; 158 | 159 | while (Wire.available()) { 160 | raw[cnt++] = Wire.read(); 161 | } 162 | 163 | if (cnt == 0) { 164 | goto START; 165 | } 166 | 167 | dta = raw[0]; 168 | dta <<= 8; 169 | dta += raw[1]; 170 | 171 | 172 | return dta; 173 | } 174 | 175 | void MutichannelGasSensor::write_i2c(unsigned char addr, unsigned char* dta, unsigned char dta_len) { 176 | Wire.beginTransmission(addr); 177 | for (int i = 0; i < dta_len; i++) { 178 | Wire.write(dta[i]); 179 | } 180 | Wire.endTransmission(); 181 | } 182 | 183 | 184 | /********************************************************************************************************* 185 | ** Function name: readData 186 | ** Descriptions: read 4 bytes from I2C slave 187 | *********************************************************************************************************/ 188 | int16_t MutichannelGasSensor::readData(uint8_t cmd) { 189 | uint16_t timeout = 0; 190 | uint8_t buffer[4]; 191 | uint8_t checksum = 0; 192 | int16_t rtnData = 0; 193 | 194 | //send command 195 | sendI2C(cmd); 196 | //wait for a while 197 | delay(2); 198 | //get response 199 | Wire.requestFrom(i2cAddress, (uint8_t)4); // request 4 bytes from slave device 200 | while (Wire.available() == 0) { 201 | if (timeout++ > 100) { 202 | return -2; //time out 203 | } 204 | delay(2); 205 | } 206 | if (Wire.available() != 4) { 207 | return -3; //rtnData length wrong 208 | } 209 | buffer[0] = Wire.read(); 210 | buffer[1] = Wire.read(); 211 | buffer[2] = Wire.read(); 212 | buffer[3] = Wire.read(); 213 | checksum = (uint8_t)(buffer[0] + buffer[1] + buffer[2]); 214 | if (checksum != buffer[3]) { 215 | return -4; //checksum wrong 216 | } 217 | rtnData = ((buffer[1] << 8) + buffer[2]); 218 | 219 | return rtnData;//successful 220 | } 221 | 222 | /********************************************************************************************************* 223 | ** Function name: readR0 224 | ** Descriptions: read R0 stored in slave MCU 225 | *********************************************************************************************************/ 226 | int16_t MutichannelGasSensor::readR0(void) { 227 | int16_t rtnData = 0; 228 | 229 | rtnData = readData(0x11); 230 | 231 | if (rtnData > 0) { 232 | res0[0] = rtnData; 233 | } else { 234 | return rtnData; //unsuccessful 235 | } 236 | 237 | rtnData = readData(0x12); 238 | if (rtnData > 0) { 239 | res0[1] = rtnData; 240 | } else { 241 | return rtnData; //unsuccessful 242 | } 243 | 244 | rtnData = readData(0x13); 245 | if (rtnData > 0) { 246 | res0[2] = rtnData; 247 | } else { 248 | return rtnData; //unsuccessful 249 | } 250 | 251 | return 1;//successful 252 | } 253 | 254 | /********************************************************************************************************* 255 | ** Function name: readR 256 | ** Descriptions: read resistance value of each channel from slave MCU 257 | *********************************************************************************************************/ 258 | int16_t MutichannelGasSensor::readR(void) { 259 | int16_t rtnData = 0; 260 | 261 | rtnData = readData(0x01); 262 | if (rtnData >= 0) { 263 | res[0] = rtnData; 264 | } else { 265 | return rtnData; //unsuccessful 266 | } 267 | 268 | rtnData = readData(0x02); 269 | if (rtnData >= 0) { 270 | res[1] = rtnData; 271 | } else { 272 | return rtnData; //unsuccessful 273 | } 274 | 275 | rtnData = readData(0x03); 276 | if (rtnData >= 0) { 277 | res[2] = rtnData; 278 | } else { 279 | return rtnData; //unsuccessful 280 | } 281 | 282 | return 0;//successful 283 | } 284 | 285 | /********************************************************************************************************* 286 | ** Function name: readR 287 | ** Descriptions: calculate gas concentration of each channel from slave MCU 288 | ** Parameters: 289 | gas - gas type 290 | ** Returns: 291 | float value - concentration of the gas 292 | *********************************************************************************************************/ 293 | float MutichannelGasSensor::calcGas(int gas) { 294 | 295 | float ratio0, ratio1, ratio2; 296 | if (1 == __version) { 297 | if (!r0_inited) { 298 | if (readR0() >= 0) { 299 | r0_inited = true; 300 | } else { 301 | return -1.0f; 302 | } 303 | } 304 | 305 | if (readR() < 0) { 306 | return -2.0f; 307 | } 308 | 309 | ratio0 = (float)res[0] / res0[0]; 310 | ratio1 = (float)res[1] / res0[1]; 311 | ratio2 = (float)res[2] / res0[2]; 312 | } else if (2 == __version) { 313 | // how to calc ratio/123 314 | ledOn(); 315 | int A0_0 = get_addr_dta(6, ADDR_USER_ADC_HN3); 316 | int A0_1 = get_addr_dta(6, ADDR_USER_ADC_CO); 317 | int A0_2 = get_addr_dta(6, ADDR_USER_ADC_NO2); 318 | 319 | int An_0 = get_addr_dta(CH_VALUE_NH3); 320 | int An_1 = get_addr_dta(CH_VALUE_CO); 321 | int An_2 = get_addr_dta(CH_VALUE_NO2); 322 | 323 | ratio0 = (float)An_0 / (float)A0_0 * (1023.0 - A0_0) / (1023.0 - An_0); 324 | ratio1 = (float)An_1 / (float)A0_1 * (1023.0 - A0_1) / (1023.0 - An_1); 325 | ratio2 = (float)An_2 / (float)A0_2 * (1023.0 - A0_2) / (1023.0 - An_2); 326 | 327 | } 328 | 329 | float c = 0; 330 | 331 | switch (gas) { 332 | case CO: { 333 | c = pow(ratio1, -1.179) * 4.385; //mod by jack 334 | break; 335 | } 336 | case NO2: { 337 | c = pow(ratio2, 1.007) / 6.855; //mod by jack 338 | break; 339 | } 340 | case NH3: { 341 | c = pow(ratio0, -1.67) / 1.47; //modi by jack 342 | break; 343 | } 344 | case C3H8: { //add by jack 345 | c = pow(ratio0, -2.518) * 570.164; 346 | break; 347 | } 348 | case C4H10: { //add by jack 349 | c = pow(ratio0, -2.138) * 398.107; 350 | break; 351 | } 352 | case CH4: { //add by jack 353 | c = pow(ratio1, -4.363) * 630.957; 354 | break; 355 | } 356 | case H2: { //add by jack 357 | c = pow(ratio1, -1.8) * 0.73; 358 | break; 359 | } 360 | case C2H5OH: { //add by jack 361 | c = pow(ratio1, -1.552) * 1.622; 362 | break; 363 | } 364 | default: 365 | break; 366 | } 367 | 368 | if (2 == __version) { 369 | ledOff(); 370 | } 371 | return isnan(c) ? -3 : c; 372 | } 373 | 374 | /********************************************************************************************************* 375 | ** Function name: changeI2cAddr 376 | ** Descriptions: change I2C address of the slave MCU, and this address will be stored in EEPROM of slave MCU 377 | *********************************************************************************************************/ 378 | void MutichannelGasSensor::changeI2cAddr(uint8_t newAddr) { 379 | Wire.beginTransmission(i2cAddress); // transmit to device 380 | Wire.write(0x23); // sends one byte 381 | Wire.write(newAddr); // sends one byte 382 | Wire.endTransmission(); // stop transmitting 383 | i2cAddress = newAddr; 384 | } 385 | 386 | /********************************************************************************************************* 387 | ** Function name: doCalibrate 388 | ** Descriptions: tell slave to do a calibration, it will take about 8s 389 | after the calibration, must reread the R0 values 390 | *********************************************************************************************************/ 391 | void MutichannelGasSensor::doCalibrate(void) { 392 | 393 | if (1 == __version) { 394 | START: 395 | 396 | sendI2C(0x22); 397 | if (readR0() > 0) { 398 | for (int i = 0; i < 3; i++) { 399 | _SERIAL.print(res0[i]); 400 | _SERIAL.print('\t'); 401 | } 402 | } else { 403 | delay(5000); 404 | _SERIAL.println("continue..."); 405 | for (int i = 0; i < 3; i++) { 406 | _SERIAL.print(res0[i]); 407 | _SERIAL.print('\t'); 408 | } 409 | _SERIAL.println(); 410 | goto START; 411 | } 412 | } else if (2 == __version) { 413 | unsigned int i, a0, a1, a2; 414 | while (1) { 415 | a0 = get_addr_dta(CH_VALUE_NH3); 416 | a1 = get_addr_dta(CH_VALUE_CO); 417 | a2 = get_addr_dta(CH_VALUE_NO2); 418 | 419 | _SERIAL.print(a0); 420 | _SERIAL.print('\t'); 421 | _SERIAL.print(a1); 422 | _SERIAL.print('\t'); 423 | _SERIAL.print(a2); 424 | _SERIAL.println('\t'); 425 | ledOn(); 426 | 427 | int cnt = 0; 428 | for (i = 0; i < 20; i++) { 429 | if ((a0 - get_addr_dta(CH_VALUE_NH3)) > 2 || (get_addr_dta(CH_VALUE_NH3) - a0) > 2) { 430 | cnt++; 431 | } 432 | if ((a1 - get_addr_dta(CH_VALUE_CO)) > 2 || (get_addr_dta(CH_VALUE_CO) - a1) > 2) { 433 | cnt++; 434 | } 435 | if ((a2 - get_addr_dta(CH_VALUE_NO2)) > 2 || (get_addr_dta(CH_VALUE_NO2) - a2) > 2) { 436 | cnt++; 437 | } 438 | 439 | if (cnt > 5) { 440 | break; 441 | } 442 | delay(1000); 443 | } 444 | 445 | ledOff(); 446 | if (cnt <= 5) { 447 | break; 448 | } 449 | delay(200); 450 | } 451 | 452 | _SERIAL.print("write user adc value: "); 453 | _SERIAL.print(a0); _SERIAL.print('\t'); 454 | _SERIAL.print(a1); _SERIAL.print('\t'); 455 | _SERIAL.print(a2); _SERIAL.println('\t'); 456 | 457 | unsigned char tmp[7]; 458 | 459 | tmp[0] = 7; 460 | 461 | tmp[1] = a0 >> 8; 462 | tmp[2] = a0 & 0xff; 463 | 464 | tmp[3] = a1 >> 8; 465 | tmp[4] = a1 & 0xff; 466 | 467 | tmp[5] = a2 >> 8; 468 | tmp[6] = a2 & 0xff; 469 | 470 | write_i2c(i2cAddress, tmp, 7); 471 | } 472 | } 473 | 474 | /********************************************************************************************************* 475 | ** Function name: powerOn 476 | ** Descriptions: power on sensor heater 477 | *********************************************************************************************************/ 478 | void MutichannelGasSensor::powerOn(void) { 479 | if (__version == 1) { 480 | sendI2C(0x21); 481 | } else if (__version == 2) { 482 | dta_test[0] = 11; 483 | dta_test[1] = 1; 484 | write_i2c(i2cAddress, dta_test, 2); 485 | } 486 | } 487 | 488 | /********************************************************************************************************* 489 | ** Function name: powerOff 490 | ** Descriptions: power off sensor heater 491 | *********************************************************************************************************/ 492 | void MutichannelGasSensor::powerOff(void) { 493 | if (__version == 1) { 494 | sendI2C(0x20); 495 | } else if (__version == 2) { 496 | dta_test[0] = 11; 497 | dta_test[1] = 0; 498 | write_i2c(i2cAddress, dta_test, 2); 499 | } 500 | } 501 | 502 | void MutichannelGasSensor::display_eeprom() { 503 | if (__version == 1) { 504 | _SERIAL.println("ERROR: display_eeprom() is NOT support by V1 firmware."); 505 | return ; 506 | } 507 | 508 | _SERIAL.print("ADDR_IS_SET = "); _SERIAL.println(get_addr_dta(CMD_READ_EEPROM, ADDR_IS_SET)); 509 | _SERIAL.print("ADDR_FACTORY_ADC_NH3 = "); _SERIAL.println(get_addr_dta(CMD_READ_EEPROM, ADDR_FACTORY_ADC_NH3)); 510 | _SERIAL.print("ADDR_FACTORY_ADC_CO = "); _SERIAL.println(get_addr_dta(CMD_READ_EEPROM, ADDR_FACTORY_ADC_CO)); 511 | _SERIAL.print("ADDR_FACTORY_ADC_NO2 = "); _SERIAL.println(get_addr_dta(CMD_READ_EEPROM, ADDR_FACTORY_ADC_NO2)); 512 | _SERIAL.print("ADDR_USER_ADC_HN3 = "); _SERIAL.println(get_addr_dta(CMD_READ_EEPROM, ADDR_USER_ADC_HN3)); 513 | _SERIAL.print("ADDR_USER_ADC_CO = "); _SERIAL.println(get_addr_dta(CMD_READ_EEPROM, ADDR_USER_ADC_CO)); 514 | _SERIAL.print("ADDR_USER_ADC_NO2 = "); _SERIAL.println(get_addr_dta(CMD_READ_EEPROM, ADDR_USER_ADC_NO2)); 515 | _SERIAL.print("ADDR_I2C_ADDRESS = "); _SERIAL.println(get_addr_dta(CMD_READ_EEPROM, ADDR_I2C_ADDRESS)); 516 | } 517 | 518 | float MutichannelGasSensor::getR0(unsigned char ch) { // 0:CH3, 1:CO, 2:NO2 519 | if (__version == 1) { 520 | _SERIAL.println("ERROR: getR0() is NOT support by V1 firmware."); 521 | return -1; 522 | } 523 | 524 | int a = 0; 525 | switch (ch) { 526 | case 0: // CH3 527 | a = get_addr_dta(CMD_READ_EEPROM, ADDR_USER_ADC_HN3); 528 | _SERIAL.print("a_ch3 = "); 529 | _SERIAL.println(a); 530 | break; 531 | 532 | case 1: // CO 533 | a = get_addr_dta(CMD_READ_EEPROM, ADDR_USER_ADC_CO); 534 | _SERIAL.print("a_co = "); 535 | _SERIAL.println(a); 536 | break; 537 | 538 | case 2: // NO2 539 | a = get_addr_dta(CMD_READ_EEPROM, ADDR_USER_ADC_NO2); 540 | _SERIAL.print("a_no2 = "); 541 | _SERIAL.println(a); 542 | break; 543 | 544 | default:; 545 | } 546 | 547 | float r = 56.0 * (float)a / (1023.0 - (float)a); 548 | return r; 549 | } 550 | 551 | float MutichannelGasSensor::getRs(unsigned char ch) { // 0:CH3, 1:CO, 2:NO2 552 | 553 | if (__version == 1) { 554 | _SERIAL.println("ERROR: getRs() is NOT support by V1 firmware."); 555 | return -1; 556 | } 557 | 558 | int a = 0; 559 | switch (ch) { 560 | case 0: // NH3 561 | a = get_addr_dta(1); 562 | break; 563 | 564 | case 1: // CO 565 | a = get_addr_dta(2); 566 | break; 567 | 568 | case 2: // NO2 569 | a = get_addr_dta(3); 570 | break; 571 | 572 | default:; 573 | } 574 | 575 | float r = 56.0 * (float)a / (1023.0 - (float)a); 576 | return r; 577 | } 578 | 579 | // 1. change i2c address to 0x04 580 | // 2. change adc value of R0 to default 581 | void MutichannelGasSensor::factory_setting() { 582 | 583 | unsigned char tmp[7]; 584 | 585 | unsigned char error; 586 | unsigned char address = 0; 587 | 588 | for (address = 1; address < 127; address++) { 589 | // The i2c_scanner uses the return value of 590 | // the Write.endTransmisstion to see if 591 | // a device did acknowledge to the address. 592 | Wire.beginTransmission(address); 593 | error = Wire.endTransmission(); 594 | 595 | if (error == 0) { 596 | // change i2c to 0x04 597 | 598 | _SERIAL.print("I2C address is: 0x"); 599 | _SERIAL.println(address, HEX); 600 | _SERIAL.println("Change I2C address to 0x04"); 601 | 602 | dta_test[0] = CMD_CHANGE_I2C; 603 | dta_test[1] = 0x04; 604 | write_i2c(address, dta_test, 2); 605 | 606 | i2cAddress = 0x04; 607 | delay(100); 608 | getVersion(); 609 | break; 610 | } 611 | } 612 | 613 | unsigned int a0 = get_addr_dta(CMD_READ_EEPROM, ADDR_FACTORY_ADC_NH3); 614 | unsigned int a1 = get_addr_dta(CMD_READ_EEPROM, ADDR_FACTORY_ADC_CO); 615 | unsigned int a2 = get_addr_dta(CMD_READ_EEPROM, ADDR_FACTORY_ADC_NO2); 616 | 617 | tmp[0] = 7; 618 | tmp[1] = a0 >> 8; 619 | tmp[2] = a0 & 0xff; 620 | tmp[3] = a1 >> 8; 621 | tmp[4] = a1 & 0xff; 622 | 623 | tmp[5] = a2 >> 8; 624 | tmp[6] = a2 & 0xff; 625 | delay(100); 626 | write_i2c(i2cAddress, tmp, 7); 627 | delay(100); 628 | } 629 | 630 | void MutichannelGasSensor::change_i2c_address(unsigned char addr) { 631 | dta_test[0] = CMD_CHANGE_I2C; 632 | dta_test[1] = addr; 633 | write_i2c(i2cAddress, dta_test, 2); 634 | 635 | 636 | _SERIAL.print("FUNCTION: CHANGE I2C ADDRESS: 0X"); 637 | _SERIAL.print(i2cAddress, HEX); 638 | _SERIAL.print(" > 0x"); 639 | _SERIAL.println(addr, HEX); 640 | 641 | i2cAddress = addr; 642 | } 643 | 644 | MutichannelGasSensor gas; 645 | /********************************************************************************************************* 646 | END FILE 647 | *********************************************************************************************************/ -------------------------------------------------------------------------------- /MutichannelGasSensor.h: -------------------------------------------------------------------------------- 1 | /* 2 | MutichannelGasSensor.h 3 | 2015 Copyright (c) Seeed Technology Inc. All right reserved. 4 | 5 | Author: Jacky Zhang 6 | 2015-3-17 7 | http://www.seeed.cc/ 8 | modi by Jack, 2015-8 9 | 10 | V2 by Loovee 11 | 2016-11-11 12 | 13 | The MIT License (MIT) 14 | 15 | Copyright (c) 2015 Seeed Technology Inc. 16 | 17 | Permission is hereby granted, free of charge, to any person obtaining a copy 18 | of this software and associated documentation files (the "Software"), to deal 19 | in the Software without restriction, including without limitation the rights 20 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 21 | copies of the Software, and to permit persons to whom the Software is 22 | furnished to do so, subject to the following conditions: 23 | 24 | The above copyright notice and this permission notice shall be included in 25 | all copies or substantial portions of the Software. 26 | 27 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 28 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 29 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 30 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 31 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 32 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 33 | THE SOFTWARE. 34 | */ 35 | 36 | #ifndef __MUTICHANNELGASSENSOR_H__ 37 | #define __MUTICHANNELGASSENSOR_H__ 38 | 39 | #if defined (ARDUINO_SAMD_ZERO) 40 | #define _SERIAL SerialUSB 41 | #elif defined(ARDUINO_ARCH_SEEED_STM32F4) 42 | #define _SERIAL SerialUSB 43 | #elif defined (ARDUINO_ARCH_SAMD) 44 | #define _SERIAL Serial 45 | #elif defined (ARDUINO_ARCH_AVR) 46 | #define _SERIAL Serial 47 | #else 48 | #error "Architecture not matched" 49 | #endif 50 | 51 | 52 | #define DEFAULT_I2C_ADDR 0x04 53 | 54 | #define ADDR_IS_SET 0 // if this is the first time to run, if 1126, set 55 | #define ADDR_FACTORY_ADC_NH3 2 56 | #define ADDR_FACTORY_ADC_CO 4 57 | #define ADDR_FACTORY_ADC_NO2 6 58 | 59 | #define ADDR_USER_ADC_HN3 8 60 | #define ADDR_USER_ADC_CO 10 61 | #define ADDR_USER_ADC_NO2 12 62 | #define ADDR_IF_CALI 14 // IF USER HAD CALI 63 | 64 | #define ADDR_I2C_ADDRESS 20 65 | 66 | #define CH_VALUE_NH3 1 67 | #define CH_VALUE_CO 2 68 | #define CH_VALUE_NO2 3 69 | 70 | #define CMD_ADC_RES0 1 // NH3 71 | #define CMD_ADC_RES1 2 // CO 72 | #define CMD_ADC_RES2 3 // NO2 73 | #define CMD_ADC_RESALL 4 // ALL CHANNEL 74 | #define CMD_CHANGE_I2C 5 // CHANGE I2C 75 | #define CMD_READ_EEPROM 6 // READ EEPROM VALUE, RETURN UNSIGNED INT 76 | #define CMD_SET_R0_ADC 7 // SET R0 ADC VALUE 77 | #define CMD_GET_R0_ADC 8 // GET R0 ADC VALUE 78 | #define CMD_GET_R0_ADC_FACTORY 9 // GET FACTORY R0 ADC VALUE 79 | #define CMD_CONTROL_LED 10 80 | #define CMD_CONTROL_PWR 11 81 | 82 | enum {CO, NO2, NH3, C3H8, C4H10, CH4, H2, C2H5OH}; 83 | 84 | class MutichannelGasSensor { 85 | 86 | private: 87 | 88 | int __version; 89 | unsigned char dta_test[20]; 90 | 91 | unsigned int readChAdcValue(int ch); 92 | unsigned int adcValueR0_NH3_Buf; 93 | unsigned int adcValueR0_CO_Buf; 94 | unsigned int adcValueR0_NO2_Buf; 95 | 96 | public: 97 | 98 | uint8_t i2cAddress; //I2C address of this MCU 99 | uint16_t res0[3]; //sensors res0 100 | uint16_t res[3]; //sensors res 101 | bool r0_inited; 102 | 103 | MutichannelGasSensor(); 104 | inline unsigned int get_addr_dta(unsigned char addr_reg); 105 | inline unsigned int get_addr_dta(unsigned char addr_reg, unsigned char __dta); 106 | inline void write_i2c(unsigned char addr, unsigned char* dta, unsigned char dta_len); 107 | 108 | void sendI2C(unsigned char dta); 109 | int16_t readData(uint8_t cmd); 110 | int16_t readR0(void); 111 | int16_t readR(void); 112 | float calcGas(int gas); 113 | 114 | public: 115 | 116 | void begin(int address); 117 | void begin(); 118 | void changeI2cAddr(uint8_t newAddr); 119 | void powerOn(void); 120 | void powerOff(void); 121 | void doCalibrate(void); 122 | 123 | //get gas concentration, unit: ppm 124 | float measure_CO() { 125 | return calcGas(CO); 126 | } 127 | float measure_NO2() { 128 | return calcGas(NO2); 129 | } 130 | float measure_NH3() { 131 | return calcGas(NH3); 132 | } 133 | float measure_C3H8() { 134 | return calcGas(C3H8); 135 | } 136 | float measure_C4H10() { 137 | return calcGas(C4H10); 138 | } 139 | float measure_CH4() { 140 | return calcGas(CH4); 141 | } 142 | float measure_H2() { 143 | return calcGas(H2); 144 | } 145 | float measure_C2H5OH() { 146 | return calcGas(C2H5OH); 147 | } 148 | 149 | float getR0(unsigned char ch); // 0:CH3, 1:CO, 2:NO2 150 | float getRs(unsigned char ch); // 0:CH3, 1:CO, 2:NO2 151 | 152 | public: 153 | 154 | void ledOn() { 155 | dta_test[0] = CMD_CONTROL_LED; 156 | dta_test[1] = 1; 157 | write_i2c(i2cAddress, dta_test, 2); 158 | } 159 | 160 | void ledOff() { 161 | dta_test[0] = CMD_CONTROL_LED; 162 | dta_test[1] = 0; 163 | write_i2c(i2cAddress, dta_test, 2); 164 | } 165 | 166 | void display_eeprom(); 167 | void factory_setting(); 168 | void change_i2c_address(unsigned char addr); 169 | unsigned char getVersion(); 170 | }; 171 | 172 | extern MutichannelGasSensor gas; 173 | 174 | #endif 175 | 176 | /********************************************************************************************************* 177 | END FILE 178 | *********************************************************************************************************/ -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Mutichannel_Gas_Sensor [![Build Status](https://travis-ci.com/Seeed-Studio/Mutichannel_Gas_Sensor.svg?branch=master)](https://travis-ci.com/Seeed-Studio/Mutichannel_Gas_Sensor) 2 | This Arduino library is used for driving "Xadow - Mutichannel Gas Sensor" and "Grove - Mutichanel Gas Sensor" 3 | 4 | 5 | 6 | [Grove - Multichannel Gas Sensor](https://www.seeedstudio.com/s/Grove-Multichannel-Gas-Sensor-p-2502.html) 7 | 8 | ## Usage: 9 | 10 | mutichannelGasSensor.begin(0x04); 11 | 12 | mutichannelGasSensor.powerOn(); 13 | 14 | then read the concentration of the specific gas you want to measure: 15 | 16 | mutichannelGasSensor.measure_NH3(); 17 | 18 | mutichannelGasSensor.measure_CO(); 19 | 20 | mutichannelGasSensor.measure_NO2(); 21 | 22 | mutichannelGasSensor.measure_C3H8(); 23 | 24 | mutichannelGasSensor.measure_C4H10(); 25 | 26 | mutichannelGasSensor.measure_CH4(); 27 | 28 | mutichannelGasSensor.measure_H2(); 29 | 30 | mutichannelGasSensor.measure_C2H5OH(); 31 | 32 | For details please move to [wiki page](http://wiki.seeedstudio.com/Grove-Multichannel_Gas_Sensor/). 33 | 34 | 35 | 36 | ---- 37 | 38 | This software is written by Jacky Zhang (![](http://www.seeedstudio.com/wiki/images/8/8f/Email_addr_of_jacky_zhang.png)) from [Seeed Technology Inc.](http://www.seeed.cc) and is licensed under [The MIT License](http://opensource.org/licenses/mit-license.php). Check License.txt/LICENSE for the details of MIT license.
39 | 40 | Contributing to this software is warmly welcomed. You can do this basically by
41 | [forking](https://help.github.com/articles/fork-a-repo), committing modifications and then [pulling requests](https://help.github.com/articles/using-pull-requests) (follow the links above
42 | for operating guide). Adding change log and your contact into file header is encouraged.
43 | Thanks for your contribution. 44 | 45 | Seeed is a hardware innovation platform for makers to grow inspirations into differentiating products. By working closely with technology providers of all scale, Seeed provides accessible technologies with quality, speed and supply chain knowledge. When prototypes are ready to iterate, Seeed helps productize 1 to 1,000 pcs using in-house engineering, supply chain management and agile manufacture forces. Seeed also team up with incubators, Chinese tech ecosystem, investors and distribution channels to portal Maker startups beyond. 46 | 47 | 48 | [![Analytics](https://ga-beacon.appspot.com/UA-46589105-3/Mutichannel_Gas_Sensor)](https://github.com/igrigorik/ga-beacon) 49 | -------------------------------------------------------------------------------- /examples/GetVersion/GetVersion.ino: -------------------------------------------------------------------------------- 1 | // Get firmware version of Grove Multichannel Gas Sensor 2 | #include 3 | #include "MutichannelGasSensor.h" 4 | 5 | #define SENSOR_ADDR 0X04 // default to 0x04 6 | 7 | void setup() { 8 | Serial.begin(115200); 9 | gas.begin(SENSOR_ADDR); 10 | 11 | unsigned char version = gas.getVersion(); 12 | Serial.print("Version = "); 13 | Serial.println(version); 14 | } 15 | 16 | void loop() { 17 | // nothing to do 18 | } -------------------------------------------------------------------------------- /examples/I2C_Address/I2C_Address.ino: -------------------------------------------------------------------------------- 1 | // change i2c address 2 | // Loovee 3 | // 2016-11-10 4 | 5 | #include 6 | #include "MutichannelGasSensor.h" 7 | 8 | #define SENSOR_ADDR_OLD 0x04 // default to 0x04 9 | #define SENSOR_ADDR_NEW 0x19 // change i2c address to 0x19 10 | 11 | void setup() { 12 | Serial.begin(115200); 13 | gas.begin(SENSOR_ADDR_OLD); // 14 | gas.change_i2c_address(SENSOR_ADDR_NEW); 15 | Serial.print("I2C ADDRESS SET TO 0X");; 16 | Serial.println(SENSOR_ADDR_NEW, HEX); 17 | } 18 | 19 | void loop() { 20 | 21 | } 22 | 23 | // END FILE 24 | -------------------------------------------------------------------------------- /examples/RawData/RawData.ino: -------------------------------------------------------------------------------- 1 | // get RAW data from the sensor 2 | // Loovee 3 | // 2016-11-10 4 | 5 | #include 6 | #include "MutichannelGasSensor.h" 7 | 8 | #define SENSOR_ADDR 0X04 // default to 0x04 9 | 10 | void setup() { 11 | Serial.begin(115200); 12 | gas.begin(SENSOR_ADDR); // 13 | } 14 | 15 | void loop() { 16 | float R0_NH3, R0_CO, R0_NO2; 17 | float Rs_NH3, Rs_CO, Rs_NO2; 18 | float ratio_NH3, ratio_CO, ratio_NO2; 19 | 20 | R0_NH3 = gas.getR0(0); 21 | R0_CO = gas.getR0(1); 22 | R0_NO2 = gas.getR0(2); 23 | 24 | Rs_NH3 = gas.getRs(0); 25 | Rs_CO = gas.getRs(1); 26 | Rs_NO2 = gas.getRs(2); 27 | 28 | ratio_NH3 = Rs_NH3 / R0_NH3; 29 | ratio_CO = Rs_CO / R0_CO; 30 | ratio_NO2 = Rs_NO2 / R0_NO2; 31 | 32 | Serial.println("R0:"); 33 | Serial.print(R0_NH3); 34 | Serial.print('\t'); 35 | Serial.print(R0_CO); 36 | Serial.print('\t'); 37 | Serial.println(R0_NO2); 38 | 39 | Serial.println("Rs:"); 40 | Serial.print(Rs_NH3); 41 | Serial.print('\t'); 42 | Serial.print(Rs_CO); 43 | Serial.print('\t'); 44 | Serial.println(Rs_NO2); 45 | 46 | Serial.println("ratio:"); 47 | Serial.print(ratio_NH3); 48 | Serial.print('\t'); 49 | Serial.print(ratio_CO); 50 | Serial.print('\t'); 51 | Serial.println(ratio_NO2); 52 | 53 | Serial.println("------------------------"); 54 | delay(1000); 55 | } 56 | -------------------------------------------------------------------------------- /examples/ReadSensorValue_Grove/ReadSensorValue_Grove.ino: -------------------------------------------------------------------------------- 1 | /* 2 | This is a demo to test gas library 3 | This code is running on Xadow-mainboard, and the I2C slave is Xadow-gas 4 | There is a ATmega168PA on Xadow-gas, it get sensors output and feed back to master. 5 | the data is raw ADC value, algorithm should be realized on master. 6 | 7 | please feel free to write email to me if there is any question 8 | 9 | Jacky Zhang, Embedded Software Engineer 10 | qi.zhang@seeed.cc 11 | 17,mar,2015 12 | */ 13 | 14 | #include 15 | #include "MutichannelGasSensor.h" 16 | 17 | void setup() { 18 | Serial.begin(115200); // start serial for output 19 | Serial.println("power on!"); 20 | gas.begin(0x04);//the default I2C address of the slave is 0x04 21 | gas.powerOn(); 22 | Serial.print("Firmware Version = "); 23 | Serial.println(gas.getVersion()); 24 | } 25 | 26 | void loop() { 27 | float c; 28 | 29 | c = gas.measure_NH3(); 30 | Serial.print("The concentration of NH3 is "); 31 | if (c >= 0) { 32 | Serial.print(c); 33 | } else { 34 | Serial.print("invalid"); 35 | } 36 | Serial.println(" ppm"); 37 | 38 | c = gas.measure_CO(); 39 | Serial.print("The concentration of CO is "); 40 | if (c >= 0) { 41 | Serial.print(c); 42 | } else { 43 | Serial.print("invalid"); 44 | } 45 | Serial.println(" ppm"); 46 | 47 | c = gas.measure_NO2(); 48 | Serial.print("The concentration of NO2 is "); 49 | if (c >= 0) { 50 | Serial.print(c); 51 | } else { 52 | Serial.print("invalid"); 53 | } 54 | Serial.println(" ppm"); 55 | 56 | c = gas.measure_C3H8(); 57 | Serial.print("The concentration of C3H8 is "); 58 | if (c >= 0) { 59 | Serial.print(c); 60 | } else { 61 | Serial.print("invalid"); 62 | } 63 | Serial.println(" ppm"); 64 | 65 | c = gas.measure_C4H10(); 66 | Serial.print("The concentration of C4H10 is "); 67 | if (c >= 0) { 68 | Serial.print(c); 69 | } else { 70 | Serial.print("invalid"); 71 | } 72 | Serial.println(" ppm"); 73 | 74 | c = gas.measure_CH4(); 75 | Serial.print("The concentration of CH4 is "); 76 | if (c >= 0) { 77 | Serial.print(c); 78 | } else { 79 | Serial.print("invalid"); 80 | } 81 | Serial.println(" ppm"); 82 | 83 | c = gas.measure_H2(); 84 | Serial.print("The concentration of H2 is "); 85 | if (c >= 0) { 86 | Serial.print(c); 87 | } else { 88 | Serial.print("invalid"); 89 | } 90 | Serial.println(" ppm"); 91 | 92 | c = gas.measure_C2H5OH(); 93 | Serial.print("The concentration of C2H5OH is "); 94 | if (c >= 0) { 95 | Serial.print(c); 96 | } else { 97 | Serial.print("invalid"); 98 | } 99 | Serial.println(" ppm"); 100 | 101 | delay(1000); 102 | Serial.println("..."); 103 | } -------------------------------------------------------------------------------- /examples/ReadSensorValue_Xadow/ReadSensorValue_Xadow.ino: -------------------------------------------------------------------------------- 1 | /* 2 | This is a demo to test gas library 3 | This code is running on Xadow-mainboard, and the I2C slave is Xadow-gas 4 | There is a ATmega168PA on Xadow-gas, it get sensors output and feed back to master. 5 | the data is raw ADC value, algorithm should be realized on master. 6 | 7 | please feel free to write email to me if there is any question 8 | 9 | Jacky Zhang, Embedded Software Engineer 10 | qi.zhang@seeed.cc 11 | 17,mar,2015 12 | */ 13 | 14 | #include "xadow.h" 15 | #include 16 | #include "MutichannelGasSensor.h" 17 | 18 | void setup() { 19 | Xadow.init(); 20 | 21 | Serial.begin(9600); // start serial for output 22 | Serial.println("power on!"); 23 | 24 | gas.begin(0x04);//the default I2C address of the slave is 0x04 25 | //gas.changeI2cAddr(0x10); 26 | //gas.doCalibrate(); 27 | 28 | gas.powerOn(); 29 | } 30 | 31 | void loop() { 32 | float c; 33 | 34 | c = gas.measure_NH3(); 35 | Serial.print("The concentration of NH3 is "); 36 | if (c >= 0) { 37 | Serial.print(c); 38 | } else { 39 | Serial.print("invalid"); 40 | } 41 | Serial.println(" ppm"); 42 | 43 | c = gas.measure_CO(); 44 | Serial.print("The concentration of CO is "); 45 | if (c >= 0) { 46 | Serial.print(c); 47 | } else { 48 | Serial.print("invalid"); 49 | } 50 | Serial.println(" ppm"); 51 | 52 | c = gas.measure_NO2(); 53 | Serial.print("The concentration of NO2 is "); 54 | if (c >= 0) { 55 | Serial.print(c); 56 | } else { 57 | Serial.print("invalid"); 58 | } 59 | Serial.println(" ppm"); 60 | 61 | c = gas.measure_C3H8(); 62 | Serial.print("The concentration of C3H8 is "); 63 | if (c >= 0) { 64 | Serial.print(c); 65 | } else { 66 | Serial.print("invalid"); 67 | } 68 | Serial.println(" ppm"); 69 | 70 | c = gas.measure_C4H10(); 71 | Serial.print("The concentration of C4H10 is "); 72 | if (c >= 0) { 73 | Serial.print(c); 74 | } else { 75 | Serial.print("invalid"); 76 | } 77 | Serial.println(" ppm"); 78 | 79 | c = gas.measure_CH4(); 80 | Serial.print("The concentration of CH4 is "); 81 | if (c >= 0) { 82 | Serial.print(c); 83 | } else { 84 | Serial.print("invalid"); 85 | } 86 | Serial.println(" ppm"); 87 | 88 | c = gas.measure_H2(); 89 | Serial.print("The concentration of H2 is "); 90 | if (c >= 0) { 91 | Serial.print(c); 92 | } else { 93 | Serial.print("invalid"); 94 | } 95 | Serial.println(" ppm"); 96 | 97 | c = gas.measure_C2H5OH(); 98 | Serial.print("The concentration of C2H5OH is "); 99 | if (c >= 0) { 100 | Serial.print(c); 101 | } else { 102 | Serial.print("invalid"); 103 | } 104 | Serial.println(" ppm"); 105 | 106 | Xadow.greenLed(LEDON); 107 | delay(500); 108 | Xadow.greenLed(LEDOFF); 109 | delay(500); 110 | Serial.println("..."); 111 | } -------------------------------------------------------------------------------- /examples/UpdateFrimware/.DS_Store: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Seeed-Studio/Mutichannel_Gas_Sensor/abb44bec847b03690f70d9a39af5e23615791bde/examples/UpdateFrimware/.DS_Store -------------------------------------------------------------------------------- /examples/UpdateFrimware/UpdateFrimware.ino: -------------------------------------------------------------------------------- 1 | // Atmega chip programmer 2 | // Author: Nick Gammon 3 | // Date: 22nd May 2012 4 | // Version: 1.17 5 | 6 | // Version 1.1: Reset foundSig to -1 each time around the loop. 7 | // Version 1.2: Put hex bootloader data into separate files 8 | // Version 1.3: Added verify, and MD5 sums 9 | // Version 1.4: Added signatures for ATmeag8U2/16U2/32U2 (7 May 2012) 10 | // Version 1.5: Added signature for ATmega1284P (8 May 2012) 11 | // Version 1.6: Allow sketches to read bootloader area (lockbyte: 0x2F) 12 | // Version 1.7: Added choice of bootloaders for the Atmega328P (8 MHz or 16 MHz) 13 | // Version 1.8: Output an 8 MHz clock on pin 9 14 | // Version 1.9: Added support for Atmega1284P, and fixed some bugs 15 | // Version 1.10: Corrected flash size for Atmega1284P. 16 | // Version 1.11: Added support for Atmega1280. Removed MD5SUM stuff to make room. 17 | // Version 1.12: Added signatures for ATtiny2313A, ATtiny4313, ATtiny13 18 | // Version 1.13: Added signature for Atmega8A 19 | // Version 1.14: Added bootloader for Atmega8 20 | // Version 1.15: Removed extraneous 0xFF from some files 21 | // Version 1.16: Added signature for Atmega328 22 | // Version 1.17: Allowed for running on the Leonardo, Micro, etc. 23 | 24 | /* 25 | 26 | Copyright 2012 Nick Gammon. 27 | 28 | 29 | PERMISSION TO DISTRIBUTE 30 | 31 | Permission is hereby granted, free of charge, to any person obtaining a copy of this software 32 | and associated documentation files (the "Software"), to deal in the Software without restriction, 33 | including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 34 | and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 35 | subject to the following conditions: 36 | 37 | The above copyright notice and this permission notice shall be included in 38 | all copies or substantial portions of the Software. 39 | 40 | 41 | LIMITATION OF LIABILITY 42 | 43 | The software is provided "as is", without warranty of any kind, express or implied, 44 | including but not limited to the warranties of merchantability, fitness for a particular 45 | purpose and noninfringement. In no event shall the authors or copyright holders be liable 46 | for any claim, damages or other liability, whether in an action of contract, 47 | tort or otherwise, arising from, out of or in connection with the software 48 | or the use or other dealings in the software. 49 | 50 | */ 51 | 52 | #include 53 | #include 54 | 55 | const unsigned long BAUD_RATE = 115200; 56 | 57 | const byte CLOCKOUT = 9; 58 | const byte RESET = 10; // --> goes to reset on the target board 59 | 60 | #if ARDUINO < 100 61 | const byte SCK = 13; // SPI clock 62 | #endif 63 | 64 | // number of items in an array 65 | #define NUMITEMS(arg) ((unsigned int) (sizeof (arg) / sizeof (arg [0]))) 66 | 67 | // programming commands to send via SPI to the chip 68 | enum { 69 | progamEnable = 0xAC, 70 | 71 | // writes are preceded by progamEnable 72 | chipErase = 0x80, 73 | writeLockByte = 0xE0, 74 | writeLowFuseByte = 0xA0, 75 | writeHighFuseByte = 0xA8, 76 | writeExtendedFuseByte = 0xA4, 77 | 78 | pollReady = 0xF0, 79 | 80 | programAcknowledge = 0x53, 81 | 82 | readSignatureByte = 0x30, 83 | readCalibrationByte = 0x38, 84 | 85 | readLowFuseByte = 0x50, readLowFuseByteArg2 = 0x00, 86 | readExtendedFuseByte = 0x50, readExtendedFuseByteArg2 = 0x08, 87 | readHighFuseByte = 0x58, readHighFuseByteArg2 = 0x08, 88 | readLockByte = 0x58, readLockByteArg2 = 0x00, 89 | 90 | readProgramMemory = 0x20, 91 | writeProgramMemory = 0x4C, 92 | loadExtendedAddressByte = 0x4D, 93 | loadProgramMemory = 0x40, 94 | 95 | }; // end of enum 96 | 97 | // structure to hold signature and other relevant data about each chip 98 | typedef struct { 99 | byte sig [3]; 100 | char* desc; 101 | unsigned long flashSize; 102 | unsigned int baseBootSize; 103 | const byte* bootloader; 104 | unsigned long loaderStart; // bytes 105 | unsigned int loaderLength; // bytes 106 | unsigned long pageSize; // bytes 107 | byte lowFuse, highFuse, extFuse, lockByte; 108 | } signatureType; 109 | 110 | const unsigned long kb = 1024; 111 | 112 | // hex bootloader data 113 | #include "bootloader_atmega168.h" 114 | 115 | // see Atmega328 datasheet page 298 116 | signatureType signatures [] = { 117 | // signature description flash size bootloader size 118 | 119 | // Attiny84 family 120 | { { 0x1E, 0x91, 0x0B }, "ATtiny24", 2 * kb, 0 }, 121 | { { 0x1E, 0x92, 0x07 }, "ATtiny44", 4 * kb, 0 }, 122 | { { 0x1E, 0x93, 0x0C }, "ATtiny84", 8 * kb, 0 }, 123 | 124 | // Attiny85 family 125 | { { 0x1E, 0x91, 0x08 }, "ATtiny25", 2 * kb, 0 }, 126 | { { 0x1E, 0x92, 0x06 }, "ATtiny45", 4 * kb, 0 }, 127 | { { 0x1E, 0x93, 0x0B }, "ATtiny85", 8 * kb, 0 }, 128 | 129 | // Atmega328 family 130 | { { 0x1E, 0x92, 0x0A }, "ATmega48PA", 4 * kb, 0 }, 131 | { { 0x1E, 0x93, 0x0F }, "ATmega88PA", 8 * kb, 256 }, 132 | { { 0x1E, 0x94, 0x0B }, "ATmega168PA", 16 * kb, 256, 133 | atmega168_optiboot, // loader image 134 | //0x3E00, // start address 135 | 0x0, 136 | sizeof atmega168_optiboot, 137 | 128, // page size (for committing) 138 | 0xC6, // fuse low byte: external full-swing crystal 139 | 0xde, // fuse high byte: SPI enable, brown-out detection at 2.7V 140 | 0xf8, // fuse extended byte: boot into bootloader, 512 byte bootloader 141 | 0xcf 142 | }, // lock bits: SPM is not allowed to write to the Boot Loader section. 143 | }; // end of signatures 144 | 145 | // if signature found in above table, this is its index 146 | int foundSig = -1; 147 | byte lastAddressMSB = 0; 148 | 149 | // execute one programming instruction ... b1 is command, b2, b3, b4 are arguments 150 | // processor may return a result on the 4th transfer, this is returned. 151 | byte program(const byte b1, const byte b2 = 0, const byte b3 = 0, const byte b4 = 0) { 152 | SPI.transfer(b1); 153 | SPI.transfer(b2); 154 | SPI.transfer(b3); 155 | return SPI.transfer(b4); 156 | } // end of program 157 | 158 | // read a byte from flash memory 159 | byte readFlash(unsigned long addr) { 160 | byte high = (addr & 1) ? 0x08 : 0; // set if high byte wanted 161 | addr >>= 1; // turn into word address 162 | 163 | // set the extended (most significant) address byte if necessary 164 | byte MSB = (addr >> 16) & 0xFF; 165 | if (MSB != lastAddressMSB) { 166 | program(loadExtendedAddressByte, 0, MSB); 167 | lastAddressMSB = MSB; 168 | } // end if different MSB 169 | 170 | return program(readProgramMemory | high, highByte(addr), lowByte(addr)); 171 | } // end of readFlash 172 | 173 | // write a byte to the flash memory buffer (ready for committing) 174 | byte writeFlash(unsigned long addr, const byte data) { 175 | byte high = (addr & 1) ? 0x08 : 0; // set if high byte wanted 176 | addr >>= 1; // turn into word address 177 | program(loadProgramMemory | high, 0, lowByte(addr), data); 178 | } // end of writeFlash 179 | 180 | // show a byte in hex with leading zero and optional newline 181 | void showHex(const byte b, const boolean newline = false, const boolean show0x = true) { 182 | if (show0x) { 183 | Serial.print(F("0x")); 184 | } 185 | // try to avoid using sprintf 186 | char buf [4] = { ((b >> 4) & 0x0F) | '0', (b & 0x0F) | '0', ' ', 0 }; 187 | if (buf [0] > '9') { 188 | buf [0] += 7; 189 | } 190 | if (buf [1] > '9') { 191 | buf [1] += 7; 192 | } 193 | Serial.print(buf); 194 | if (newline) { 195 | Serial.println(); 196 | } 197 | } // end of showHex 198 | 199 | // convert a boolean to Yes/No 200 | void showYesNo(const boolean b, const boolean newline = false) { 201 | if (b) { 202 | Serial.print(F("Yes")); 203 | } else { 204 | Serial.print(F("No")); 205 | } 206 | if (newline) { 207 | Serial.println(); 208 | } 209 | } // end of showYesNo 210 | 211 | // poll the target device until it is ready to be programmed 212 | void pollUntilReady() { 213 | while ((program(pollReady) & 1) == 1) 214 | {} // wait till ready 215 | } // end of pollUntilReady 216 | 217 | // commit page 218 | void commitPage(unsigned long addr) { 219 | //Serial.print (F("Committing page starting at 0x")); 220 | //Serial.println (addr, HEX); 221 | 222 | addr >>= 1; // turn into word address 223 | 224 | // set the extended (most significant) address byte if necessary 225 | byte MSB = (addr >> 16) & 0xFF; 226 | if (MSB != lastAddressMSB) { 227 | program(loadExtendedAddressByte, 0, MSB); 228 | lastAddressMSB = MSB; 229 | } // end if different MSB 230 | 231 | program(writeProgramMemory, highByte(addr), lowByte(addr)); 232 | pollUntilReady(); 233 | } // end of commitPage 234 | 235 | // write specified value to specified fuse/lock byte 236 | void writeFuse(const byte newValue, const byte instruction) { 237 | if (newValue == 0) { 238 | return; // ignore 239 | } 240 | 241 | program(progamEnable, instruction, 0, newValue); 242 | pollUntilReady(); 243 | } // end of writeFuse 244 | 245 | void getFuseBytes() { 246 | Serial.print(F("LFuse = ")); 247 | showHex(program(readLowFuseByte, readLowFuseByteArg2), true); 248 | Serial.print(F("HFuse = ")); 249 | showHex(program(readHighFuseByte, readHighFuseByteArg2), true); 250 | Serial.print(F("EFuse = ")); 251 | showHex(program(readExtendedFuseByte, readExtendedFuseByteArg2), true); 252 | Serial.print(F("Lock byte = ")); 253 | showHex(program(readLockByte, readLockByteArg2), true); 254 | Serial.print("Clock calibration = "); 255 | showHex(program(readCalibrationByte), true); 256 | } // end of getFuseBytes 257 | 258 | // burn the bootloader to the target device 259 | void writeBootloader() { 260 | 261 | if (signatures [foundSig].bootloader == 0) { 262 | Serial.println(F("No bootloader support for this device.")); 263 | return; 264 | } // end if 265 | 266 | int i; 267 | 268 | byte lFuse = program(readLowFuseByte, readLowFuseByteArg2); 269 | 270 | byte newlFuse = signatures [foundSig].lowFuse; 271 | byte newhFuse = signatures [foundSig].highFuse; 272 | byte newextFuse = signatures [foundSig].extFuse; 273 | byte newlockByte = signatures [foundSig].lockByte; 274 | 275 | unsigned long addr = signatures [foundSig].loaderStart; 276 | unsigned int len = signatures [foundSig].loaderLength; 277 | unsigned long pagesize = signatures [foundSig].pageSize; 278 | unsigned long pagemask = ~(pagesize - 1); 279 | const byte* bootloader = signatures [foundSig].bootloader; 280 | 281 | 282 | Serial.print(F("Bootloader address = 0x")); 283 | Serial.println(addr, HEX); 284 | Serial.print(F("Bootloader length = ")); 285 | Serial.print(len); 286 | Serial.println(F(" bytes.")); 287 | 288 | byte subcommand = 'U'; 289 | 290 | // Atmega328P or Atmega328 291 | if (signatures [foundSig].sig [0] == 0x1E && 292 | signatures [foundSig].sig [1] == 0x95 && 293 | (signatures [foundSig].sig [2] == 0x0F || signatures [foundSig].sig [2] == 0x14) 294 | ) { 295 | Serial.println(F("Type 'L' to use Lilypad (8 MHz) loader, or 'U' for Uno (16 MHz) loader ...")); 296 | do { 297 | subcommand = toupper(Serial.read()); 298 | } while (subcommand != 'L' && subcommand != 'U'); 299 | 300 | if (subcommand == 'L') { // use internal 8 MHz clock 301 | Serial.println(F("Using Lilypad 8 MHz loader.")); 302 | bootloader = atmega168_optiboot; 303 | newlFuse = 0xE2; // internal 8 MHz oscillator 304 | newhFuse = 0xDA; // 2048 byte bootloader, SPI enabled 305 | addr = 0x7800; 306 | len = sizeof atmega168_optiboot; 307 | } // end of using the 8 MHz clock 308 | else { 309 | Serial.println(F("Using Uno Optiboot 16 MHz loader.")); 310 | } 311 | } // end of being Atmega328P 312 | 313 | unsigned long oldPage = addr & pagemask; 314 | 315 | Serial.println(F("Type 'V' to verify, or 'G' to program the chip with the bootloader ...")); 316 | char command; 317 | do { 318 | command = toupper(Serial.read()); 319 | } while (command != 'G' && command != 'V'); 320 | 321 | if (command == 'G') { 322 | Serial.println(F("Erasing chip ...")); 323 | program(progamEnable, chipErase); // erase it 324 | pollUntilReady(); 325 | Serial.println(F("Writing bootloader ...")); 326 | for (i = 0; i < len; i += 2) { 327 | unsigned long thisPage = (addr + i) & pagemask; 328 | // page changed? commit old one 329 | if (thisPage != oldPage) { 330 | commitPage(oldPage); 331 | oldPage = thisPage; 332 | } 333 | 334 | unsigned char c1 = pgm_read_byte(bootloader + i); 335 | unsigned char c2 = pgm_read_byte(bootloader + i + 1); 336 | 337 | writeFlash(addr + i, c1); 338 | writeFlash(addr + i + 1, c2); 339 | } // end while doing each word 340 | 341 | Serial.println(); 342 | 343 | // commit final page 344 | commitPage(oldPage); 345 | Serial.println("Written."); 346 | } // end if programming 347 | 348 | Serial.println(F("Verifying ...")); 349 | 350 | // count errors 351 | unsigned int errors = 0; 352 | // check each byte 353 | for (i = 0; i < signatures [foundSig].loaderLength; i++) { 354 | //if(i==0)Serial.print(" "); 355 | byte found = readFlash(addr + i); 356 | 357 | byte expected = pgm_read_byte(bootloader + i); 358 | if (found != expected) { 359 | if (errors <= 100) { 360 | Serial.print(F("Verification error at address ")); 361 | Serial.print(addr + i, HEX); 362 | Serial.print(F(". Got: ")); 363 | showHex(found); 364 | Serial.print(F(" Expected: ")); 365 | showHex(expected, true); 366 | } // end of haven't shown 100 errors yet 367 | errors++; 368 | } // end if error 369 | } // end of for 370 | 371 | Serial.println("\r\n"); 372 | if (errors == 0) { 373 | Serial.println(F("No errors found.")); 374 | } else { 375 | Serial.print(errors, DEC); 376 | Serial.println(F(" verification error(s).")); 377 | if (errors > 100) { 378 | Serial.println(F("First 100 shown.")); 379 | } 380 | return; // don't change fuses if errors 381 | } // end if 382 | 383 | if (command == 'G') { 384 | Serial.println(F("Writing fuses ...")); 385 | 386 | writeFuse(newlFuse, writeLowFuseByte); 387 | writeFuse(newhFuse, writeHighFuseByte); 388 | writeFuse(newextFuse, writeExtendedFuseByte); 389 | writeFuse(newlockByte, writeLockByte); 390 | 391 | // confirm them 392 | getFuseBytes(); 393 | } // end if programming 394 | 395 | Serial.println(F("Done.")); 396 | 397 | } // end of writeBootloader 398 | 399 | 400 | void startProgramming() { 401 | byte confirm; 402 | pinMode(RESET, OUTPUT); 403 | pinMode(SCK, OUTPUT); 404 | 405 | // we are in sync if we get back programAcknowledge on the third byte 406 | do { 407 | delay(100); 408 | // ensure SCK low 409 | digitalWrite(SCK, LOW); 410 | // then pulse reset, see page 309 of datasheet 411 | digitalWrite(RESET, HIGH); 412 | delay(1); // pulse for at least 2 clock cycles 413 | digitalWrite(RESET, LOW); 414 | delay(25); // wait at least 20 mS 415 | SPI.transfer(progamEnable); 416 | SPI.transfer(programAcknowledge); 417 | confirm = SPI.transfer(0); 418 | SPI.transfer(0); 419 | } while (confirm != programAcknowledge); 420 | 421 | Serial.println(F("Entered programming mode OK.")); 422 | } // end of startProgramming 423 | 424 | void getSignature() { 425 | foundSig = -1; 426 | lastAddressMSB = 0; 427 | 428 | byte sig [3]; 429 | Serial.print(F("Signature = ")); 430 | for (byte i = 0; i < 3; i++) { 431 | sig [i] = program(readSignatureByte, 0, i); 432 | showHex(sig [i]); 433 | } // end for each signature byte 434 | Serial.println(); 435 | 436 | for (int j = 0; j < NUMITEMS(signatures); j++) { 437 | if (memcmp(sig, signatures [j].sig, sizeof sig) == 0) { 438 | foundSig = j; 439 | Serial.print(F("Processor = ")); 440 | Serial.println(signatures [j].desc); 441 | Serial.print(F("Flash memory size = ")); 442 | Serial.print(signatures [j].flashSize, DEC); 443 | Serial.println(F(" bytes.")); 444 | return; 445 | } // end of signature found 446 | } // end of for each signature 447 | 448 | Serial.println(F("Unrecogized signature.")); 449 | } // end of getSignature 450 | 451 | void setup() { 452 | Serial.begin(BAUD_RATE); 453 | while (!Serial) ; // for Leonardo, Micro etc. 454 | Serial.println(); 455 | Serial.println(F("Atmega chip programmer.")); 456 | Serial.println(F("Written by Nick Gammon.")); 457 | 458 | digitalWrite(RESET, HIGH); // ensure SS stays high for now 459 | SPI.begin(); 460 | 461 | // slow down SPI for benefit of slower processors like the Attiny 462 | SPI.setClockDivider(SPI_CLOCK_DIV64); 463 | 464 | pinMode(CLOCKOUT, OUTPUT); 465 | 466 | // set up Timer 1 467 | TCCR1A = _BV(COM1A0); // toggle OC1A on Compare Match 468 | TCCR1B = _BV(WGM12) | _BV(CS10); // CTC, no prescaling 469 | OCR1A = 0; // output every cycle 470 | 471 | } // end of setup 472 | 473 | void loop() { 474 | startProgramming(); 475 | getSignature(); 476 | getFuseBytes(); 477 | 478 | // if we found a signature try to write a bootloader 479 | if (foundSig != -1) { 480 | writeBootloader(); 481 | } 482 | 483 | // release reset 484 | digitalWrite(RESET, HIGH); 485 | 486 | Serial.println(F("Type 'C' when ready to continue with another chip ...")); 487 | while (toupper(Serial.read()) != 'C') 488 | {} 489 | 490 | } // end of loop -------------------------------------------------------------------------------- /examples/UpdateFrimware/gpl.txt: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. 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If you wish to incorporate parts of the Program into other free 251 | programs whose distribution conditions are different, write to the author 252 | to ask for permission. For software which is copyrighted by the Free 253 | Software Foundation, write to the Free Software Foundation; we sometimes 254 | make exceptions for this. Our decision will be guided by the two goals 255 | of preserving the free status of all derivatives of our free software and 256 | of promoting the sharing and reuse of software generally. 257 | 258 | NO WARRANTY 259 | 260 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 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It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | 294 | Copyright (C) 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | , 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | -------------------------------------------------------------------------------- /examples/calibration/calibration.ino: -------------------------------------------------------------------------------- 1 | // Calibration code for Grove - Multichannel Gas Sensor 2 | // Note that it need 10 minutes pre-heat before calibration 3 | // This code is writen by Loovee@2016-5-18 4 | 5 | #include 6 | #include "MutichannelGasSensor.h" 7 | 8 | #define SENSOR_ADDR 0X04 // default to 0x04 9 | #define PRE_HEAT_TIME 0 // pre-heat time, 10-30 minutes is recommended 10 | 11 | void setup() { 12 | Serial.begin(115200); 13 | gas.begin(SENSOR_ADDR); // 14 | Serial.println("power on, and pre-heat"); 15 | 16 | for (int i = 60 * PRE_HEAT_TIME; i >= 0; i--) { 17 | Serial.print(i / 60); 18 | Serial.print(":"); 19 | Serial.println(i % 60); 20 | delay(1000); 21 | } 22 | 23 | Serial.println("Begin to calibrate..."); 24 | gas.doCalibrate(); 25 | Serial.println("Calibration ok"); 26 | 27 | gas.display_eeprom(); 28 | } 29 | 30 | void loop() { 31 | 32 | } 33 | -------------------------------------------------------------------------------- /examples/factory_setting/factory_setting.ino: -------------------------------------------------------------------------------- 1 | // factory setting 2 | // Loovee 3 | // 2016-11-10 4 | 5 | #include 6 | #include "MutichannelGasSensor.h" 7 | 8 | #define SENSOR_ADDR 0X04 // default to 0x04 9 | 10 | void setup() { 11 | Serial.begin(115200); 12 | Serial.println("Please input something to continue"); 13 | while (!Serial.available()); 14 | 15 | gas.begin(SENSOR_ADDR); // 16 | 17 | Serial.println("FACTORY SETTING OK"); 18 | 19 | float R0_NH3, R0_CO, R0_NO2; 20 | 21 | R0_NH3 = gas.getR0(0); 22 | R0_CO = gas.getR0(1); 23 | R0_NO2 = gas.getR0(2); 24 | 25 | Serial.print("R0_NH3 = "); 26 | Serial.println(R0_NH3); 27 | Serial.print("R0_CO = "); 28 | Serial.println(R0_CO); 29 | Serial.print("R0_NO2 = "); 30 | Serial.println(R0_NO2); 31 | } 32 | 33 | void loop() { 34 | } 35 | -------------------------------------------------------------------------------- /examples/new_firmware/new_firmware.ino: -------------------------------------------------------------------------------- 1 | /* firmware of multichannel gas sensor v2.0*3 2 | write by loovee 3 | 2016-11-6 4 | 5 | Factory adc value of 3 channels: 6 | NH3 = 860 7 | CO = 950 8 | NO2 = 155 9 | 10 | Default address is 0x04 11 | */ 12 | 13 | #include 14 | #include 15 | 16 | #define DEFAULT_I2C_ADDR 0x04 17 | #define DBG 1 18 | // EEPROM ADDRESS 19 | #define ADDR_IS_SET 0 // if this is the first time to run, if 1126, set 20 | #define ADDR_FACTORY_ADC_NH3 2 21 | #define ADDR_FACTORY_ADC_CO 4 22 | #define ADDR_FACTORY_ADC_NO2 6 23 | 24 | #define ADDR_USER_ADC_HN3 8 25 | #define ADDR_USER_ADC_CO 10 26 | #define ADDR_USER_ADC_NO2 12 27 | #define ADDR_IF_CALI 14 // IF USER HAD CALI 28 | #define ADDR_I2C_ADDRESS 20 29 | // I2C COMMAND 30 | 31 | #define CMD_ADC_RES0 1 // NH3 32 | #define CMD_ADC_RES1 2 // CO 33 | #define CMD_ADC_RES2 3 // NO2 34 | #define CMD_ADC_RESALL 4 // ALL CHANNEL 35 | #define CMD_CHANGE_I2C 5 // CHANGE I2C 36 | #define CMD_READ_EEPROM 6 // READ EEPROM VALUE, RETURN UNSIGNED INT 37 | #define CMD_SET_R0_ADC 7 // SET R0 ADC VALUE 38 | #define CMD_GET_R0_ADC 8 // GET R0 ADC VALUE 39 | #define CMD_GET_R0_ADC_FACTORY 9 // GET FACTORY R0 ADC VALUE 40 | #define CMD_CONTROL_LED 10 41 | #define CMD_CONTROL_PWR 11 42 | 43 | // EEPROM READ AND WRITE - UNSIGNED INT 44 | void eeprom_write(int addr, unsigned int value) { 45 | EEPROM.write(addr, value >> 8); 46 | EEPROM.write(addr + 1, value & 0xff); 47 | } 48 | 49 | unsigned int eeprom_read(int addr) { 50 | unsigned int r = EEPROM.read(addr); 51 | r <<= 8; 52 | r += EEPROM.read(addr + 1); 53 | return r; 54 | } 55 | 56 | const int pin_pwr = 8; 57 | const int pin_led = 9; 58 | 59 | const int pin_NH3 = A0; // RES0 60 | const int pin_CO = A1; // RES1 61 | const int pin_NO2 = A2; // RES2 62 | 63 | unsigned char i2c_address = 0; 64 | 65 | #define LED_ON() digitalWrite(pin_led, LOW) 66 | #define LED_OFF() digitalWrite(pin_led, HIGH) 67 | 68 | void factory_init() { 69 | #if DBG 70 | Serial.print("FACTORY: "); 71 | #endif 72 | if (1126 != eeprom_read(ADDR_IS_SET)) { // IF FACTORY SET 73 | #if DBG 74 | Serial.println("YES"); 75 | #endif 76 | eeprom_write(ADDR_IS_SET, 1126); 77 | eeprom_write(ADDR_FACTORY_ADC_NH3, 860); 78 | eeprom_write(ADDR_FACTORY_ADC_CO, 950); 79 | eeprom_write(ADDR_FACTORY_ADC_NO2, 155); 80 | eeprom_write(ADDR_USER_ADC_HN3, 860); 81 | eeprom_write(ADDR_USER_ADC_CO, 950); 82 | eeprom_write(ADDR_USER_ADC_NO2, 155); 83 | eeprom_write(ADDR_IF_CALI, 0); 84 | eeprom_write(ADDR_I2C_ADDRESS, DEFAULT_I2C_ADDR); 85 | } 86 | #if DBG 87 | else { 88 | Serial.println("NO"); 89 | } 90 | #endif 91 | } 92 | 93 | int getAnalog(int pin) { 94 | long sum = 0; 95 | for (int i = 0; i < 64; i++) { 96 | sum += analogRead(pin); 97 | } 98 | return sum >> 6; 99 | } 100 | 101 | unsigned int ADC_RES0 = 0; 102 | unsigned int ADC_RES1 = 0; 103 | unsigned int ADC_RES2 = 0; 104 | 105 | unsigned char raw_adc[6]; 106 | 107 | void updateValue() { 108 | static unsigned long timer_s = millis(); 109 | if (millis() - timer_s < 1000) { 110 | return; 111 | } 112 | timer_s = millis(); 113 | 114 | ADC_RES0 = getAnalog(pin_NH3); 115 | ADC_RES1 = getAnalog(pin_CO); 116 | ADC_RES2 = getAnalog(pin_NO2); 117 | 118 | raw_adc[0] = ADC_RES0 >> 8; 119 | raw_adc[1] = ADC_RES0; 120 | raw_adc[2] = ADC_RES1 >> 8; 121 | raw_adc[3] = ADC_RES1; 122 | raw_adc[4] = ADC_RES2 >> 8; 123 | raw_adc[5] = ADC_RES2; 124 | } 125 | 126 | void setup() { 127 | #if DBG 128 | Serial.begin(115200); 129 | #endif 130 | pinMode(pin_pwr, OUTPUT); 131 | digitalWrite(pin_pwr, HIGH); 132 | pinMode(pin_led, OUTPUT); 133 | 134 | factory_init(); 135 | i2c_address = eeprom_read(ADDR_I2C_ADDRESS); 136 | #if DBG 137 | Serial.print("i2d address = 0x"); 138 | Serial.println(i2c_address, HEX); 139 | #endif 140 | for (int i = 0; i < 5; i++) { 141 | digitalWrite(pin_led, LOW); 142 | delay(100); 143 | digitalWrite(pin_led, HIGH); 144 | delay(100); 145 | } 146 | 147 | Wire.begin(i2c_address); // join i2c bus with address 148 | Wire.onReceive(receiveCallback); // register receive callback 149 | Wire.onRequest(requestCallback); // register request callback 150 | } 151 | 152 | void loop() { 153 | updateValue(); 154 | } 155 | 156 | unsigned char recvCmd = 0; 157 | unsigned char recvDta = 0; 158 | unsigned char recvDtaStr[10]; 159 | 160 | void receiveCallback(int dtaCount) { 161 | if (dtaCount == 1) { 162 | recvCmd = Wire.read(); 163 | } else if (dtaCount == 2) { // set i2c address 164 | recvCmd = Wire.read(); 165 | recvDta = Wire.read(); 166 | 167 | if (CMD_CHANGE_I2C == recvCmd) { 168 | i2c_address = recvDta; 169 | eeprom_write(ADDR_I2C_ADDRESS, i2c_address); 170 | Wire.begin(i2c_address); 171 | } else if (CMD_CONTROL_LED == recvCmd) { 172 | if (0 == recvDta) { 173 | LED_OFF(); 174 | } else if (1 == recvDta) { 175 | LED_ON(); 176 | } 177 | } else if (CMD_CONTROL_PWR == recvCmd) { 178 | if (0 == recvDta) { 179 | digitalWrite(pin_pwr, LOW); 180 | } else if (1 == recvDta) { 181 | digitalWrite(pin_pwr, HIGH); 182 | } 183 | } 184 | } else if (dtaCount == 7) { // set ADC value 185 | recvCmd = Wire.read(); 186 | unsigned int dta[3]; 187 | 188 | for (int i = 0; i < 3; i++) { 189 | dta[i] = Wire.read(); 190 | dta[i] <<= 8; 191 | dta[i] += Wire.read(); 192 | } 193 | 194 | if (recvCmd == CMD_SET_R0_ADC) { 195 | eeprom_write(ADDR_USER_ADC_HN3, dta[0]); 196 | eeprom_write(ADDR_USER_ADC_CO, dta[1]); 197 | eeprom_write(ADDR_USER_ADC_NO2, dta[2]); 198 | } 199 | } 200 | } 201 | 202 | unsigned char rcDta[10]; 203 | void requestCallback() { 204 | switch (recvCmd) { 205 | case CMD_ADC_RES0: // NH3 206 | Wire.write(&raw_adc[0], 2); // HIGH FIRST 207 | 208 | break; 209 | 210 | case CMD_ADC_RES1: // CO 211 | Wire.write(&raw_adc[2], 2); // HIGH FIRST 212 | break; 213 | 214 | case CMD_ADC_RES2: // NO2 215 | Wire.write(&raw_adc[4], 2); // HIGH FIRST 216 | break; 217 | 218 | case CMD_ADC_RESALL: 219 | Wire.write(raw_adc, 6); 220 | break; 221 | 222 | case CMD_READ_EEPROM: 223 | rcDta[0] = EEPROM.read(recvDta); 224 | rcDta[1] = EEPROM.read(recvDta + 1); 225 | Wire.write(rcDta, 2); 226 | break; 227 | 228 | case CMD_GET_R0_ADC: 229 | 230 | rcDta[0] = EEPROM.read(ADDR_USER_ADC_HN3); 231 | rcDta[1] = EEPROM.read(ADDR_USER_ADC_HN3 + 1); 232 | rcDta[2] = EEPROM.read(ADDR_USER_ADC_CO); 233 | rcDta[3] = EEPROM.read(ADDR_USER_ADC_CO + 1); 234 | rcDta[4] = EEPROM.read(ADDR_USER_ADC_NO2); 235 | rcDta[5] = EEPROM.read(ADDR_USER_ADC_NO2 + 1); 236 | 237 | Wire.write(rcDta, 6); 238 | 239 | break; 240 | 241 | case CMD_GET_R0_ADC_FACTORY: 242 | 243 | rcDta[0] = EEPROM.read(ADDR_FACTORY_ADC_NH3); 244 | rcDta[1] = EEPROM.read(ADDR_FACTORY_ADC_NH3 + 1); 245 | rcDta[2] = EEPROM.read(ADDR_FACTORY_ADC_CO); 246 | rcDta[3] = EEPROM.read(ADDR_FACTORY_ADC_CO + 1); 247 | rcDta[4] = EEPROM.read(ADDR_FACTORY_ADC_NO2); 248 | rcDta[5] = EEPROM.read(ADDR_FACTORY_ADC_NO2 + 1); 249 | 250 | Wire.write(rcDta, 6); 251 | break; 252 | 253 | default:; 254 | } 255 | } 256 | 257 | // END FILE 258 | -------------------------------------------------------------------------------- /keywords.txt: -------------------------------------------------------------------------------- 1 | 2 | ####################################### 3 | # Syntax Coloring Map For 4 | ####################################### 5 | 6 | ####################################### 7 | # Datatypes (KEYWORD1) 8 | ####################################### 9 | 10 | 11 | 12 | ####################################### 13 | # Methods and Functions (KEYWORD2) 14 | ####################################### 15 | get_addr_dta KEYWORD2 16 | get_addr_dta KEYWORD2 17 | write_i2c KEYWORD2 18 | sendI2C KEYWORD2 19 | readData KEYWORD2 20 | readR0 KEYWORD2 21 | readR KEYWORD2 22 | calcGas KEYWORD2 23 | begin KEYWORD2 24 | changeI2cAddr KEYWORD2 25 | powerOn KEYWORD2 26 | powerOff KEYWORD2 27 | doCalibrate KEYWORD2 28 | measure_CO KEYWORD2 29 | measure_NO2 KEYWORD2 30 | measure_NH3 KEYWORD2 31 | measure_C3H8 KEYWORD2 32 | measure_C4H10 KEYWORD2 33 | measure_CH4 KEYWORD2 34 | measure_H2 KEYWORD2 35 | measure_C2H5OH KEYWORD2 36 | getR0 KEYWORD2 37 | getRs KEYWORD2 38 | ledOn KEYWORD2 39 | ledOff KEYWORD2 40 | display_eeprom KEYWORD2 41 | factory_setting KEYWORD2 42 | change_i2c_address KEYWORD2 43 | getVersion KEYWORD2 44 | 45 | ####################################### 46 | # Constants (LITERAL1) 47 | ####################################### -------------------------------------------------------------------------------- /library.properties: -------------------------------------------------------------------------------- 1 | name=Grove - Multichannel Gas Sensor 2 | version=1.0.0 3 | author=Seeed Studio 4 | maintainer=Seeed Studio 5 | sentence=Arduino library to control Grove - Multichannel Gas Sensor . 6 | paragraph=Grove – Multichannel Gas sensor is a environment detecting sensor with a built in MiCS-6814 which can detect many unhealthful gases, and three gases can be measured simultaneously due to its multi channels, so it can help you to monitor the concentration which more than one gas.. 7 | category=Sensors 8 | url=https://github.com/Seeed-Studio/Mutichannel_Gas_Sensor 9 | architectures=* --------------------------------------------------------------------------------