├── .gitignore ├── library.properties ├── keywords.txt ├── .github └── workflows │ └── c-cpp.yml ├── .circleci └── config.yml ├── library.json ├── .library.json ├── src ├── DFRobot_ESP_EC.h └── DFRobot_ESP_EC.cpp ├── example └── DFRobot_ESP_EC_BY_GREENPONIK │ └── DFRobot_ESP_EC_BY_GREENPONIK.ino ├── README.md └── LICENSE /.gitignore: -------------------------------------------------------------------------------- 1 | .vscode/ -------------------------------------------------------------------------------- /library.properties: -------------------------------------------------------------------------------- 1 | name=DFRobot_ESP_EC_BY_GREENPONIK 2 | version=1.1.4 3 | author=GREENPONIK 4 | maintainer=GreenPonik 5 | sentence=Update from DFROBOT library for ESP32 compatibility 6 | paragraph=Update from DFROBOT library for ESP32 compatibility 7 | category=Signal Input/Output 8 | url=https://github.com/GreenPonik/DFRobot_ESP_EC_BY_GREENPONIK.git 9 | architectures=* 10 | includes=DFRobot_ESP_EC.h -------------------------------------------------------------------------------- /keywords.txt: -------------------------------------------------------------------------------- 1 | ####################################### 2 | # Syntax Coloring DFRobot_ESP_EC 3 | ####################################### 4 | 5 | ####################################### 6 | # Datatypes (KEYWORD1) 7 | ####################################### 8 | 9 | DFRobot_ESP_EC KEYWORD1 10 | 11 | ####################################### 12 | # Methods and Functions (KEYWORD2) 13 | ####################################### 14 | readEC KEYWORD2 15 | calibration KEYWORD2 -------------------------------------------------------------------------------- /.github/workflows/c-cpp.yml: -------------------------------------------------------------------------------- 1 | name: C/C++ CI 2 | 3 | on: 4 | push: 5 | branches: [ master ] 6 | pull_request: 7 | branches: [ master ] 8 | 9 | jobs: 10 | build: 11 | 12 | runs-on: ubuntu-latest 13 | 14 | steps: 15 | - uses: actions/checkout@v2 16 | - name: configure 17 | run: ./configure 18 | - name: make 19 | run: make 20 | - name: make check 21 | run: make check 22 | - name: make distcheck 23 | run: make distcheck 24 | -------------------------------------------------------------------------------- /.circleci/config.yml: -------------------------------------------------------------------------------- 1 | # Use the latest 2.1 version of CircleCI pipeline process engine. See: https://circleci.com/docs/2.0/configuration-reference 2 | version: 2.1 3 | # Use a package of configuration called an orb. 4 | orbs: 5 | # Declare a dependency on the welcome-orb 6 | welcome: circleci/welcome-orb@0.4.1 7 | # Orchestrate or schedule a set of jobs 8 | workflows: 9 | # Name the workflow "welcome" 10 | welcome: 11 | # Run the welcome/run job in its own container 12 | jobs: 13 | - welcome/run -------------------------------------------------------------------------------- /library.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "DFRobot_ESP_EC_BY_GREENPONIK", 3 | "description": "Read EC with ESP32 and DFrobot DFR0300 EC sensor kit", 4 | "keywords": "EC,reader,ESP32", 5 | "authors": { 6 | "name": "Mickael Lehoux", 7 | "maintainer": true 8 | }, 9 | "repository": { 10 | "type": "git", 11 | "url": "https://github.com/GreenPonik/DFRobot_ESP_EC_BY_GREENPONIK.git" 12 | }, 13 | "version": "1.1.4", 14 | "license": "LGPL-2.1", 15 | "frameworks": "arduino", 16 | "platforms": "espressif32" 17 | } 18 | -------------------------------------------------------------------------------- /.library.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "DFRobot_ESP_EC_BY_GREENPONIK", 3 | "description": "Read EC with ESP32 and DFrobot DFR0300 EC sensor kit", 4 | "keywords": ["EC", "reader", "ESP32"], 5 | "authors": [ 6 | { 7 | "email": "contact@greenponik.com", 8 | "url": "https://www.greenponik.com", 9 | "maintainer": true, 10 | "name": "Mickael Lehoux" 11 | } 12 | ], 13 | "repository": { 14 | "type": "git", 15 | "url": "https://github.com/GreenPonik/DFRobot_ESP_EC_BY_GREENPONIK.git" 16 | }, 17 | "version": "1.1.4", 18 | "license": "LGPL-2.1", 19 | "frameworks": ["arduino"], 20 | "platforms": ["espressif32"] 21 | } 22 | -------------------------------------------------------------------------------- /src/DFRobot_ESP_EC.h: -------------------------------------------------------------------------------- 1 | /* 2 | * file DFRobot_ESP_EC.h * @ https://github.com/GreenPonik/DFRobot_ESP_EC_BY_GREENPONIK 3 | * 4 | * Arduino library for Gravity: Analog EC Sensor / Meter Kit V2, SKU: DFR0300 5 | * 6 | * Based on the @ https://github.com/DFRobot/DFRobot_EC 7 | * Copyright [DFRobot](http://www.dfrobot.com), 2018 8 | * Copyright GNU Lesser General Public License 9 | * 10 | * ################################################## 11 | * ################################################## 12 | * ########## Fork on github by GreenPonik ########## 13 | * ############# ONLY ESP COMPATIBLE ################ 14 | * ################################################## 15 | * ################################################## 16 | * 17 | * version V1.1.2 18 | * date 2019-06 19 | */ 20 | 21 | #ifndef _DFROBOT_ESP_EC_H_ 22 | #define _DFROBOT_ESP_EC_H_ 23 | 24 | #include "Arduino.h" 25 | 26 | #define KVALUEADDR 10 //the start address of the K value stored in the EEPROM 27 | #define RAWEC_1413_LOW 0.70 28 | #define RAWEC_1413_HIGH 1.80 29 | #define RAWEC_276_LOW 1.95 30 | #define RAWEC_276_HIGH 3.2 31 | #define RAWEC_1288_LOW 8 32 | #define RAWEC_1288_HIGH 16.8 33 | 34 | #define ReceivedBufferLength 10 //length of the Serial CMD buffer 35 | 36 | class DFRobot_ESP_EC 37 | { 38 | public: 39 | DFRobot_ESP_EC(); 40 | ~DFRobot_ESP_EC(); 41 | void calibration(float voltage, float temperature, char *cmd); //calibration by Serial CMD 42 | void calibration(float voltage, float temperature); 43 | float readEC(float voltage, float temperature); // voltage to EC value, with temperature compensation 44 | void begin(int EepromStartAddress = KVALUEADDR); //initialization 45 | 46 | private: 47 | float _ecvalue; 48 | float _kvalue; 49 | float _kvalueLow; 50 | float _kvalueHigh; 51 | float _voltage; 52 | float _temperature; 53 | float _rawEC; 54 | 55 | char _cmdReceivedBuffer[ReceivedBufferLength]; //store the Serial CMD 56 | byte _cmdReceivedBufferIndex; 57 | 58 | private: 59 | int _eepromStartAddress; 60 | boolean cmdSerialDataAvailable(); 61 | void ecCalibration(byte mode); // calibration process, wirte key parameters to EEPROM 62 | byte cmdParse(const char *cmd); 63 | byte cmdParse(); 64 | }; 65 | 66 | #endif 67 | -------------------------------------------------------------------------------- /example/DFRobot_ESP_EC_BY_GREENPONIK/DFRobot_ESP_EC_BY_GREENPONIK.ino: -------------------------------------------------------------------------------- 1 | /* 2 | * file DFRobot_ESP_EC_BY_GREENPONIK.ino 3 | * @ https://github.com/GreenPonik/DFRobot_ESP_EC_BY_GREENPONIK 4 | * 5 | * This is the sample code for Gravity: Analog EC Sensor / Meter Kit V2, SKU:DFR300 6 | * * In order to guarantee precision, a temperature sensor such as DS18B20 is needed, to execute automatic temperature compensation. 7 | * You can send commands in the serial monitor to execute the calibration. 8 | * Serial Commands: 9 | * enterec -> enter the calibration mode 10 | * calec -> calibrate with the standard buffer solution, two buffer solutions(1413us/cm and 12.88ms/cm) will be automaticlly recognized 11 | * exitec -> save the calibrated parameters and exit from calibration mode 12 | * 13 | * Based on the @ https://github.com/DFRobot/DFRobot_EC 14 | * Copyright [DFRobot](http://www.dfrobot.com), 2018 15 | * Copyright GNU Lesser General Public License 16 | * 17 | * ################################################## 18 | * ################################################## 19 | * ########## Fork on github by GreenPonik ########## 20 | * ############# ONLY ESP COMPATIBLE ################ 21 | * ################################################## 22 | * ################################################## 23 | * 24 | * version V1.1.2 25 | * date 2019-06 26 | */ 27 | 28 | #include "Arduino.h" 29 | #include "Adafruit_ADS1015.h" 30 | #include "DFRobot_ESP_EC.h" 31 | #include "EEPROM.h" 32 | 33 | DFRobot_ESP_EC ec; 34 | Adafruit_ADS1115 ads; 35 | 36 | float voltage, ecValue, temperature = 25; 37 | 38 | void setup() 39 | { 40 | Serial.begin(115200); 41 | EEPROM.begin(32);//needed EEPROM.begin to store calibration k in eeprom 42 | ec.begin();//by default lib store calibration k since 10 change it by set ec.begin(30); to start from 30 43 | ads.setGain(GAIN_ONE); 44 | ads.begin(); 45 | } 46 | 47 | void loop() 48 | { 49 | static unsigned long timepoint = millis(); 50 | if (millis() - timepoint > 1000U) //time interval: 1s 51 | { 52 | 53 | timepoint = millis(); 54 | voltage = ads.readADC_SingleEnded(0) / 10; 55 | Serial.print("voltage:"); 56 | Serial.println(voltage, 4); 57 | 58 | //temperature = readTemperature(); // read your temperature sensor to execute temperature compensation 59 | Serial.print("temperature:"); 60 | Serial.print(temperature, 1); 61 | Serial.println("^C"); 62 | 63 | ecValue = ec.readEC(voltage, temperature); // convert voltage to EC with temperature compensation 64 | Serial.print("EC:"); 65 | Serial.print(ecValue, 4); 66 | Serial.println("ms/cm"); 67 | } 68 | ec.calibration(voltage, temperature); // calibration process by Serail CMD 69 | } 70 | 71 | float readTemperature() 72 | { 73 | //add your code here to get the temperature from your temperature sensor 74 | } 75 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | ## DFRobot_ESP_EC_BY_GREENPONIK Library 2 | --------------------------------------------------------- 3 | 4 | ESP EC Reading and Calibration 5 | @ https://github.com/greenponik/DFRobot_ESP_EC_BY_GREENPONIK 6 | 7 | >using Gravity: Analog ec Sensor / Meter Kit V2, SKU:DFR0300 8 | 9 | >based on DFRobot_EC @ https://github.com/DFRobot/DFRobot_EC 10 | 11 | IMPORTANT : to make it work, you will need the help of an additionnal ADC converter because the one on the ESP32 isn't accurate enough. Here we used an ADS1115 from Adafruit 12 | >You can find it here : https://www.adafruit.com/product/1085 13 | 14 | >And here is the library you'll need to add to your sketch : https://github.com/adafruit/Adafruit_ADS1X15 15 | 16 | example how to use ESP EC read library 17 | DFRobot ESP EC BY GREENPONIK 18 | 19 | #1 clone the repo 20 | git clone https://github.com/GreenPonik/esp32-read-ec-example.git 21 | 22 | cd esp32-read-ec-example 23 | 24 | #2 run platformio build and upload on esp32 25 | pio run -t upload 26 | 27 | #3 debug through serial monitor 28 | pio device monitor 29 | 30 | ## Example 31 | ```C++ 32 | #include "Arduino.h" 33 | #include "Adafruit_ADS1015.h" 34 | #include "DFRobot_ESP_EC.h" 35 | #include "EEPROM.h" 36 | 37 | DFRobot_ESP_EC ec; 38 | Adafruit_ADS1115 ads; 39 | 40 | float voltage, ecValue, temperature = 25; 41 | 42 | void setup() 43 | { 44 | Serial.begin(115200); 45 | EEPROM.begin(32);//needed EEPROM.begin to store calibration k in eeprom 46 | ec.begin();//by default lib store calibration k since 10 change it by set ec.begin(30); to start from 30 47 | ads.setGain(GAIN_ONE); 48 | ads.begin(); 49 | } 50 | 51 | void loop() 52 | { 53 | static unsigned long timepoint = millis(); 54 | if (millis() - timepoint > 1000U) //time interval: 1s 55 | { 56 | 57 | timepoint = millis(); 58 | voltage = ads.readADC_SingleEnded(0) / 10; 59 | Serial.print("voltage:"); 60 | Serial.println(voltage, 4); 61 | 62 | //temperature = readTemperature(); // read your temperature sensor to execute temperature compensation 63 | Serial.print("temperature:"); 64 | Serial.print(temperature, 1); 65 | Serial.println("^C"); 66 | 67 | ecValue = ec.readEC(voltage, temperature); // convert voltage to EC with temperature compensation 68 | Serial.print("EC:"); 69 | Serial.print(ecValue, 4); 70 | Serial.println("ms/cm"); 71 | } 72 | ec.calibration(voltage, temperature); // calibration process by Serail CMD 73 | } 74 | 75 | float readTemperature() 76 | { 77 | //add your code here to get the temperature from your temperature sensor 78 | } 79 | ``` 80 | 81 | ## Compatibility 82 | 83 | MCU | Work Well | Work Wrong | Untested | Remarks 84 | ------------------ | :----------: | :----------: | :---------: | ----- 85 | ESP32 | √ | | | 86 | ESP8266 | | √ | | 87 | 88 | ## Credits 89 | 90 | Written by Mickael Lehoux from [@greenponik](https://www.greenponik.com/) 91 | 92 | >Based on written by Jiawei Zhang(Welcome to our [website](https://www.dfrobot.com/)) 93 | 94 | # Tutorial here 95 | [![Tutorial here](http://img.youtube.com/vi/n1EBzMDPI74/0.jpg)](https://www.youtube.com/watch?v=n1EBzMDPI74 "EC Meter with ESP32 and DFRobot EC module (DFR0300)") 96 | 97 | ### Suscribe on our newsletter here : 98 | en: http://bit.ly/2NuaKbN 99 | 100 | fr: http://bit.ly/2XNf61R 101 | 102 | https://www.greenponik.com 103 | 104 | 105 | ## support us 106 | [become a patreon](https://www.patreon.com/bePatron?u=32614023) 107 | -------------------------------------------------------------------------------- /src/DFRobot_ESP_EC.cpp: -------------------------------------------------------------------------------- 1 | /* 2 | * file DFRobot_ESP_EC.cpp * @ https://github.com/GreenPonik/DFRobot_ESP_EC_BY_GREENPONIK 3 | * 4 | * Arduino library for Gravity: Analog EC Sensor / Meter Kit V2, SKU: DFR0300 5 | * 6 | * Based on the @ https://github.com/DFRobot/DFRobot_EC 7 | * Copyright [DFRobot](http://www.dfrobot.com), 2018 8 | * Copyright GNU Lesser General Public License 9 | * 10 | * ################################################## 11 | * ################################################## 12 | * ########## Fork on github by GreenPonik ########## 13 | * ############# ONLY ESP COMPATIBLE ################ 14 | * ################################################## 15 | * ################################################## 16 | * 17 | * version V1.1.2 18 | * date 2019-06 19 | */ 20 | 21 | #include "Arduino.h" 22 | #include "DFRobot_ESP_EC.h" 23 | #include "EEPROM.h" 24 | 25 | #define RES2 820.0 26 | #define ECREF 200.0 27 | 28 | DFRobot_ESP_EC::DFRobot_ESP_EC() 29 | { 30 | this->_ecvalue = 0.0; 31 | this->_kvalue = 1.0; 32 | this->_kvalueLow = 1.0; 33 | this->_kvalueHigh = 1.0; 34 | this->_cmdReceivedBufferIndex = 0; 35 | this->_voltage = 0.0; 36 | this->_temperature = 25.0; 37 | } 38 | 39 | DFRobot_ESP_EC::~DFRobot_ESP_EC() 40 | { 41 | } 42 | 43 | void DFRobot_ESP_EC::begin(int EepromStartAddress) 44 | { 45 | this->_eepromStartAddress = EepromStartAddress; 46 | //check if calibration values (kvalueLow and kvalueHigh) are stored in eeprom 47 | this->_kvalueLow = EEPROM.readFloat(this->_eepromStartAddress); //read the calibrated K value from EEPROM 48 | if (this->_kvalueLow == float() || isnan(this->_kvalueLow) || isinf(this->_kvalueLow)) 49 | { 50 | this->_kvalueLow = 1.0; // For new EEPROM, write default value( K = 1.0) to EEPROM 51 | EEPROM.writeFloat(this->_eepromStartAddress, this->_kvalueLow); 52 | EEPROM.commit(); 53 | } 54 | 55 | this->_kvalueHigh = EEPROM.readFloat(this->_eepromStartAddress + (int)sizeof(float)); //read the calibrated K value from EEPROM 56 | if (this->_kvalueHigh == float() || isnan(this->_kvalueHigh) || isinf(this->_kvalueHigh)) 57 | { 58 | this->_kvalueHigh = 1.0; // For new EEPROM, write default value( K = 1.0) to EEPROM 59 | EEPROM.writeFloat(this->_eepromStartAddress + (int)sizeof(float), this->_kvalueHigh); 60 | EEPROM.commit(); 61 | } 62 | this->_kvalue = this->_kvalueLow; // set default K value: K = kvalueLow 63 | } 64 | 65 | float DFRobot_ESP_EC::readEC(float voltage, float temperature) 66 | { 67 | float value = 0, valueTemp = 0; 68 | this->_rawEC = 1000 * voltage / RES2 / ECREF; 69 | Serial.print(F(">>>rawEC: ")); 70 | Serial.print(this->_rawEC, 4); 71 | valueTemp = this->_rawEC * this->_kvalue; 72 | //automatic shift process 73 | //First Range:(0,2); Second Range:(2,20) 74 | if (valueTemp > 2.5) 75 | { 76 | this->_kvalue = this->_kvalueHigh; 77 | } 78 | else if (valueTemp < 2.0) 79 | { 80 | this->_kvalue = this->_kvalueLow; 81 | } 82 | 83 | value = this->_rawEC * this->_kvalue; //calculate the EC value after automatic shift 84 | value = value / (1.0 + 0.0185 * (temperature - 25.0)); //temperature compensation 85 | this->_ecvalue = value; //store the EC value for Serial CMD calibration 86 | Serial.print(F(", ecValue: ")); 87 | Serial.print(this->_ecvalue, 4); 88 | Serial.println(F("<<<")); 89 | return this->_ecvalue; 90 | } 91 | 92 | void DFRobot_ESP_EC::calibration(float voltage, float temperature, char *cmd) 93 | { 94 | this->_voltage = voltage; 95 | this->_temperature = temperature; 96 | strupr(cmd); 97 | ecCalibration(cmdParse(cmd)); // if received Serial CMD from the serial monitor, enter into the calibration mode 98 | } 99 | 100 | void DFRobot_ESP_EC::calibration(float voltage, float temperature) 101 | { 102 | this->_voltage = voltage; 103 | this->_temperature = temperature; 104 | if (cmdSerialDataAvailable() > 0) 105 | { 106 | ecCalibration(cmdParse()); // if received Serial CMD from the serial monitor, enter into the calibration mode 107 | } 108 | } 109 | 110 | boolean DFRobot_ESP_EC::cmdSerialDataAvailable() 111 | { 112 | char cmdReceivedChar; 113 | static unsigned long cmdReceivedTimeOut = millis(); 114 | while (Serial.available() > 0) 115 | { 116 | if (millis() - cmdReceivedTimeOut > 500U) 117 | { 118 | this->_cmdReceivedBufferIndex = 0; 119 | memset(this->_cmdReceivedBuffer, 0, (ReceivedBufferLength)); 120 | } 121 | cmdReceivedTimeOut = millis(); 122 | cmdReceivedChar = Serial.read(); 123 | if (cmdReceivedChar == '\n' || this->_cmdReceivedBufferIndex == ReceivedBufferLength - 1) 124 | { 125 | this->_cmdReceivedBufferIndex = 0; 126 | strupr(this->_cmdReceivedBuffer); 127 | return true; 128 | } 129 | else 130 | { 131 | this->_cmdReceivedBuffer[this->_cmdReceivedBufferIndex] = cmdReceivedChar; 132 | this->_cmdReceivedBufferIndex++; 133 | } 134 | } 135 | return false; 136 | } 137 | 138 | byte DFRobot_ESP_EC::cmdParse(const char *cmd) 139 | { 140 | byte modeIndex = 0; 141 | if (strstr(cmd, "ENTEREC") != NULL) 142 | modeIndex = 1; 143 | else if (strstr(cmd, "EXITEC") != NULL) 144 | modeIndex = 3; 145 | else if (strstr(cmd, "CALEC") != NULL) 146 | modeIndex = 2; 147 | return modeIndex; 148 | } 149 | 150 | byte DFRobot_ESP_EC::cmdParse() 151 | { 152 | byte modeIndex = 0; 153 | if (strstr(this->_cmdReceivedBuffer, "ENTEREC") != NULL) 154 | modeIndex = 1; 155 | else if (strstr(this->_cmdReceivedBuffer, "EXITEC") != NULL) 156 | modeIndex = 3; 157 | else if (strstr(this->_cmdReceivedBuffer, "CALEC") != NULL) 158 | modeIndex = 2; 159 | return modeIndex; 160 | } 161 | 162 | void DFRobot_ESP_EC::ecCalibration(byte mode) 163 | { 164 | char *receivedBufferPtr; 165 | static boolean ecCalibrationFinish = 0; 166 | static boolean enterCalibrationFlag = 0; 167 | static float compECsolution; 168 | float KValueTemp; 169 | switch (mode) 170 | { 171 | case 0: 172 | if (enterCalibrationFlag) 173 | { 174 | Serial.println(F(">>>Command Error<<<")); 175 | } 176 | break; 177 | 178 | case 1: 179 | enterCalibrationFlag = 1; 180 | ecCalibrationFinish = 0; 181 | Serial.println(); 182 | Serial.println(F(">>>Enter EC Calibration Mode<<<")); 183 | Serial.println(F(">>>Please put the probe into the 1413us/cm or 2.76ms/cm or 12.88ms/cm buffer solution<<<")); 184 | Serial.println(F(">>>Only need two point for calibration one low (1413us/com) and one high(2.76ms/cm or 12.88ms/cm)<<<")); 185 | Serial.println(); 186 | break; 187 | 188 | case 2: 189 | if (enterCalibrationFlag) 190 | { 191 | if ((this->_rawEC > RAWEC_1413_LOW) && (this->_rawEC < RAWEC_1413_HIGH)) 192 | { 193 | Serial.print(F(">>>Buffer 1.413ms/cm<<<")); //recognize 1.413us/cm buffer solution 194 | compECsolution = 1.413 * (1.0 + 0.0185 * (this->_temperature - 25.0)); //temperature compensation 195 | Serial.print(F(">>>compECsolution: ")); 196 | Serial.print(compECsolution); 197 | Serial.println(F("<<<")); 198 | } 199 | else if ((this->_rawEC > RAWEC_276_LOW) && (this->_rawEC < RAWEC_276_HIGH)) 200 | { 201 | Serial.print(F(">>>Buffer 2.76ms/cm<<<")); //recognize 2.76ms/cm buffer solution 202 | compECsolution = 2.76 * (1.0 + 0.0185 * (this->_temperature - 25.0)); //temperature compensation 203 | Serial.print(F(">>>compECsolution: ")); 204 | Serial.print(compECsolution); 205 | Serial.println(F("<<<")); 206 | } 207 | else if ((this->_rawEC > RAWEC_1288_LOW) && (this->_rawEC < RAWEC_1288_HIGH)) 208 | { 209 | Serial.print(F(">>>Buffer 12.88ms/cm<<<")); //recognize 12.88ms/cm buffer solution 210 | compECsolution = 12.88 * (1.0 + 0.0185 * (this->_temperature - 25.0)); //temperature compensation 211 | Serial.print(F(">>>compECsolution: ")); 212 | Serial.print(compECsolution); 213 | Serial.println(F("<<<")); 214 | } 215 | else 216 | { 217 | Serial.print(F(">>>Buffer Solution Error Try Again<<< ")); 218 | ecCalibrationFinish = 0; 219 | } 220 | Serial.println(); 221 | Serial.print(F(">>>KValueTemp calculation formule: ")); 222 | Serial.print(F("RES2")); 223 | Serial.print(F(" * ")); 224 | Serial.print(F("ECREF")); 225 | Serial.print(F(" * ")); 226 | Serial.print(F("compECsolution")); 227 | Serial.print(F(" / 1000.0 / ")); 228 | Serial.print(F("voltage")); 229 | Serial.println(F("<<<")); 230 | Serial.print(F(">>>KValueTemp calculation: ")); 231 | Serial.print(RES2); 232 | Serial.print(F(" * ")); 233 | Serial.print(ECREF); 234 | Serial.print(F(" * ")); 235 | Serial.print(compECsolution); 236 | Serial.print(F(" / 1000.0 / ")); 237 | Serial.print(this->_voltage); 238 | Serial.println(F("<<<")); 239 | KValueTemp = RES2 * ECREF * compECsolution / 1000.0 / this->_voltage; //calibrate the k value 240 | Serial.println(); 241 | Serial.print(F(">>>KValueTemp: ")); 242 | Serial.print(KValueTemp); 243 | Serial.println(F("<<<")); 244 | if ((KValueTemp > 0.5) && (KValueTemp < 2.0)) 245 | { 246 | Serial.println(); 247 | Serial.print(F(">>>Successful,K:")); 248 | Serial.print(KValueTemp); 249 | Serial.println(F(", Send EXITEC to Save and Exit<<<")); 250 | if ((this->_rawEC > RAWEC_1413_LOW) && (this->_rawEC < RAWEC_1413_HIGH)) 251 | { 252 | this->_kvalueLow = KValueTemp; 253 | Serial.print(">>>kvalueHigh: "); 254 | Serial.print(this->_kvalueLow); 255 | Serial.println(F("<<<")); 256 | } 257 | else if ((this->_rawEC > RAWEC_276_LOW) && (this->_rawEC < RAWEC_276_HIGH)) 258 | { 259 | this->_kvalueHigh = KValueTemp; 260 | Serial.print(">>>kvalueHigh: "); 261 | Serial.print(this->_kvalueHigh); 262 | Serial.println(F("<<<")); 263 | } 264 | else if ((this->_rawEC > RAWEC_1288_LOW) && (this->_rawEC < RAWEC_1288_HIGH)) 265 | { 266 | this->_kvalueHigh = KValueTemp; 267 | Serial.print(">>>kvalueHigh: "); 268 | Serial.print(this->_kvalueHigh); 269 | Serial.println(F("<<<")); 270 | } 271 | ecCalibrationFinish = 1; 272 | } 273 | else 274 | { 275 | Serial.println(); 276 | Serial.println(F(">>>KValueTemp out of range 0.5-2.0<<<")); 277 | Serial.print(">>>KValueTemp: "); 278 | Serial.print(KValueTemp, 4); 279 | Serial.println("<<<"); 280 | Serial.println(F(">>>Failed,Try Again<<<")); 281 | Serial.println(); 282 | ecCalibrationFinish = 0; 283 | } 284 | } 285 | break; 286 | case 3: 287 | if (enterCalibrationFlag) 288 | { 289 | Serial.println(); 290 | if (ecCalibrationFinish) 291 | { 292 | if ((this->_rawEC > RAWEC_1413_LOW) && (this->_rawEC < RAWEC_1413_HIGH)) 293 | { 294 | EEPROM.writeFloat(this->_eepromStartAddress, this->_kvalueLow); 295 | EEPROM.commit(); 296 | } 297 | else if ((this->_rawEC > RAWEC_276_LOW) && (this->_rawEC < RAWEC_276_HIGH)) 298 | { 299 | EEPROM.writeFloat(this->_eepromStartAddress + (int)sizeof(float), this->_kvalueHigh); 300 | EEPROM.commit(); 301 | } 302 | else if ((this->_rawEC > RAWEC_1288_LOW) && (this->_rawEC < RAWEC_1288_HIGH)) 303 | { 304 | EEPROM.writeFloat(this->_eepromStartAddress + (int)sizeof(float), this->_kvalueHigh); 305 | EEPROM.commit(); 306 | } 307 | Serial.print(F(">>>Calibration Successful")); 308 | } 309 | else 310 | { 311 | Serial.print(F(">>>Calibration Failed")); 312 | } 313 | Serial.println(F(",Exit EC Calibration Mode<<<")); 314 | Serial.println(); 315 | ecCalibrationFinish = 0; 316 | enterCalibrationFlag = 0; 317 | } 318 | break; 319 | } 320 | } 321 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU LESSER GENERAL PUBLIC LICENSE 2 | Version 2.1, February 1999 3 | 4 | Copyright (C) 1991, 1999 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 | [This is the first released version of the Lesser GPL. It also counts 10 | as the successor of the GNU Library Public License, version 2, hence 11 | the version number 2.1.] 12 | 13 | Preamble 14 | 15 | The licenses for most software are designed to take away your 16 | freedom to share and change it. By contrast, the GNU General Public 17 | Licenses are intended to guarantee your freedom to share and change 18 | free software--to make sure the software is free for all its users. 19 | 20 | This license, the Lesser General Public License, applies to some 21 | specially designated software packages--typically libraries--of the 22 | Free Software Foundation and other authors who decide to use it. You 23 | can use it too, but we suggest you first think carefully about whether 24 | this license or the ordinary General Public License is the better 25 | strategy to use in any particular case, based on the explanations below. 26 | 27 | When we speak of free software, we are referring to freedom of use, 28 | not price. Our General Public Licenses are designed to make sure that 29 | you have the freedom to distribute copies of free software (and charge 30 | for this service if you wish); that you receive source code or can get 31 | it if you want it; that you can change the software and use pieces of 32 | it in new free programs; and that you are informed that you can do 33 | these things. 34 | 35 | To protect your rights, we need to make restrictions that forbid 36 | distributors to deny you these rights or to ask you to surrender these 37 | rights. These restrictions translate to certain responsibilities for 38 | you if you distribute copies of the library or if you modify it. 39 | 40 | For example, if you distribute copies of the library, whether gratis 41 | or for a fee, you must give the recipients all the rights that we gave 42 | you. You must make sure that they, too, receive or can get the source 43 | code. If you link other code with the library, you must provide 44 | complete object files to the recipients, so that they can relink them 45 | with the library after making changes to the library and recompiling 46 | it. And you must show them these terms so they know their rights. 47 | 48 | We protect your rights with a two-step method: (1) we copyright the 49 | library, and (2) we offer you this license, which gives you legal 50 | permission to copy, distribute and/or modify the library. 51 | 52 | To protect each distributor, we want to make it very clear that 53 | there is no warranty for the free library. Also, if the library is 54 | modified by someone else and passed on, the recipients should know 55 | that what they have is not the original version, so that the original 56 | author's reputation will not be affected by problems that might be 57 | introduced by others. 58 | 59 | Finally, software patents pose a constant threat to the existence of 60 | any free program. We wish to make sure that a company cannot 61 | effectively restrict the users of a free program by obtaining a 62 | restrictive license from a patent holder. Therefore, we insist that 63 | any patent license obtained for a version of the library must be 64 | consistent with the full freedom of use specified in this license. 65 | 66 | Most GNU software, including some libraries, is covered by the 67 | ordinary GNU General Public License. This license, the GNU Lesser 68 | General Public License, applies to certain designated libraries, and 69 | is quite different from the ordinary General Public License. We use 70 | this license for certain libraries in order to permit linking those 71 | libraries into non-free programs. 72 | 73 | When a program is linked with a library, whether statically or using 74 | a shared library, the combination of the two is legally speaking a 75 | combined work, a derivative of the original library. The ordinary 76 | General Public License therefore permits such linking only if the 77 | entire combination fits its criteria of freedom. The Lesser General 78 | Public License permits more lax criteria for linking other code with 79 | the library. 80 | 81 | We call this license the "Lesser" General Public License because it 82 | does Less to protect the user's freedom than the ordinary General 83 | Public License. It also provides other free software developers Less 84 | of an advantage over competing non-free programs. These disadvantages 85 | are the reason we use the ordinary General Public License for many 86 | libraries. However, the Lesser license provides advantages in certain 87 | special circumstances. 88 | 89 | For example, on rare occasions, there may be a special need to 90 | encourage the widest possible use of a certain library, so that it becomes 91 | a de-facto standard. To achieve this, non-free programs must be 92 | allowed to use the library. A more frequent case is that a free 93 | library does the same job as widely used non-free libraries. In this 94 | case, there is little to gain by limiting the free library to free 95 | software only, so we use the Lesser General Public License. 96 | 97 | In other cases, permission to use a particular library in non-free 98 | programs enables a greater number of people to use a large body of 99 | free software. For example, permission to use the GNU C Library in 100 | non-free programs enables many more people to use the whole GNU 101 | operating system, as well as its variant, the GNU/Linux operating 102 | system. 103 | 104 | Although the Lesser General Public License is Less protective of the 105 | users' freedom, it does ensure that the user of a program that is 106 | linked with the Library has the freedom and the wherewithal to run 107 | that program using a modified version of the Library. 108 | 109 | The precise terms and conditions for copying, distribution and 110 | modification follow. Pay close attention to the difference between a 111 | "work based on the library" and a "work that uses the library". The 112 | former contains code derived from the library, whereas the latter must 113 | be combined with the library in order to run. 114 | 115 | GNU LESSER GENERAL PUBLIC LICENSE 116 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 117 | 118 | 0. This License Agreement applies to any software library or other 119 | program which contains a notice placed by the copyright holder or 120 | other authorized party saying it may be distributed under the terms of 121 | this Lesser General Public License (also called "this License"). 122 | Each licensee is addressed as "you". 123 | 124 | A "library" means a collection of software functions and/or data 125 | prepared so as to be conveniently linked with application programs 126 | (which use some of those functions and data) to form executables. 127 | 128 | The "Library", below, refers to any such software library or work 129 | which has been distributed under these terms. A "work based on the 130 | Library" means either the Library or any derivative work under 131 | copyright law: that is to say, a work containing the Library or a 132 | portion of it, either verbatim or with modifications and/or translated 133 | straightforwardly into another language. (Hereinafter, translation is 134 | included without limitation in the term "modification".) 135 | 136 | "Source code" for a work means the preferred form of the work for 137 | making modifications to it. For a library, complete source code means 138 | all the source code for all modules it contains, plus any associated 139 | interface definition files, plus the scripts used to control compilation 140 | and installation of the library. 141 | 142 | Activities other than copying, distribution and modification are not 143 | covered by this License; they are outside its scope. The act of 144 | running a program using the Library is not restricted, and output from 145 | such a program is covered only if its contents constitute a work based 146 | on the Library (independent of the use of the Library in a tool for 147 | writing it). Whether that is true depends on what the Library does 148 | and what the program that uses the Library does. 149 | 150 | 1. You may copy and distribute verbatim copies of the Library's 151 | complete source code as you receive it, in any medium, provided that 152 | you conspicuously and appropriately publish on each copy an 153 | appropriate copyright notice and disclaimer of warranty; keep intact 154 | all the notices that refer to this License and to the absence of any 155 | warranty; and distribute a copy of this License along with the 156 | Library. 157 | 158 | You may charge a fee for the physical act of transferring a copy, 159 | and you may at your option offer warranty protection in exchange for a 160 | fee. 161 | 162 | 2. You may modify your copy or copies of the Library or any portion 163 | of it, thus forming a work based on the Library, and copy and 164 | distribute such modifications or work under the terms of Section 1 165 | above, provided that you also meet all of these conditions: 166 | 167 | a) The modified work must itself be a software library. 168 | 169 | b) You must cause the files modified to carry prominent notices 170 | stating that you changed the files and the date of any change. 171 | 172 | c) You must cause the whole of the work to be licensed at no 173 | charge to all third parties under the terms of this License. 174 | 175 | d) If a facility in the modified Library refers to a function or a 176 | table of data to be supplied by an application program that uses 177 | the facility, other than as an argument passed when the facility 178 | is invoked, then you must make a good faith effort to ensure that, 179 | in the event an application does not supply such function or 180 | table, the facility still operates, and performs whatever part of 181 | its purpose remains meaningful. 182 | 183 | (For example, a function in a library to compute square roots has 184 | a purpose that is entirely well-defined independent of the 185 | application. Therefore, Subsection 2d requires that any 186 | application-supplied function or table used by this function must 187 | be optional: if the application does not supply it, the square 188 | root function must still compute square roots.) 189 | 190 | These requirements apply to the modified work as a whole. If 191 | identifiable sections of that work are not derived from the Library, 192 | and can be reasonably considered independent and separate works in 193 | themselves, then this License, and its terms, do not apply to those 194 | sections when you distribute them as separate works. But when you 195 | distribute the same sections as part of a whole which is a work based 196 | on the Library, the distribution of the whole must be on the terms of 197 | this License, whose permissions for other licensees extend to the 198 | entire whole, and thus to each and every part regardless of who wrote 199 | it. 200 | 201 | Thus, it is not the intent of this section to claim rights or contest 202 | your rights to work written entirely by you; rather, the intent is to 203 | exercise the right to control the distribution of derivative or 204 | collective works based on the Library. 205 | 206 | In addition, mere aggregation of another work not based on the Library 207 | with the Library (or with a work based on the Library) on a volume of 208 | a storage or distribution medium does not bring the other work under 209 | the scope of this License. 210 | 211 | 3. You may opt to apply the terms of the ordinary GNU General Public 212 | License instead of this License to a given copy of the Library. To do 213 | this, you must alter all the notices that refer to this License, so 214 | that they refer to the ordinary GNU General Public License, version 2, 215 | instead of to this License. (If a newer version than version 2 of the 216 | ordinary GNU General Public License has appeared, then you can specify 217 | that version instead if you wish.) Do not make any other change in 218 | these notices. 219 | 220 | Once this change is made in a given copy, it is irreversible for 221 | that copy, so the ordinary GNU General Public License applies to all 222 | subsequent copies and derivative works made from that copy. 223 | 224 | This option is useful when you wish to copy part of the code of 225 | the Library into a program that is not a library. 226 | 227 | 4. You may copy and distribute the Library (or a portion or 228 | derivative of it, under Section 2) in object code or executable form 229 | under the terms of Sections 1 and 2 above provided that you accompany 230 | it with the complete corresponding machine-readable source code, which 231 | must be distributed under the terms of Sections 1 and 2 above on a 232 | medium customarily used for software interchange. 233 | 234 | If distribution of object code is made by offering access to copy 235 | from a designated place, then offering equivalent access to copy the 236 | source code from the same place satisfies the requirement to 237 | distribute the source code, even though third parties are not 238 | compelled to copy the source along with the object code. 239 | 240 | 5. A program that contains no derivative of any portion of the 241 | Library, but is designed to work with the Library by being compiled or 242 | linked with it, is called a "work that uses the Library". Such a 243 | work, in isolation, is not a derivative work of the Library, and 244 | therefore falls outside the scope of this License. 245 | 246 | However, linking a "work that uses the Library" with the Library 247 | creates an executable that is a derivative of the Library (because it 248 | contains portions of the Library), rather than a "work that uses the 249 | library". The executable is therefore covered by this License. 250 | Section 6 states terms for distribution of such executables. 251 | 252 | When a "work that uses the Library" uses material from a header file 253 | that is part of the Library, the object code for the work may be a 254 | derivative work of the Library even though the source code is not. 255 | Whether this is true is especially significant if the work can be 256 | linked without the Library, or if the work is itself a library. The 257 | threshold for this to be true is not precisely defined by law. 258 | 259 | If such an object file uses only numerical parameters, data 260 | structure layouts and accessors, and small macros and small inline 261 | functions (ten lines or less in length), then the use of the object 262 | file is unrestricted, regardless of whether it is legally a derivative 263 | work. (Executables containing this object code plus portions of the 264 | Library will still fall under Section 6.) 265 | 266 | Otherwise, if the work is a derivative of the Library, you may 267 | distribute the object code for the work under the terms of Section 6. 268 | Any executables containing that work also fall under Section 6, 269 | whether or not they are linked directly with the Library itself. 270 | 271 | 6. As an exception to the Sections above, you may also combine or 272 | link a "work that uses the Library" with the Library to produce a 273 | work containing portions of the Library, and distribute that work 274 | under terms of your choice, provided that the terms permit 275 | modification of the work for the customer's own use and reverse 276 | engineering for debugging such modifications. 277 | 278 | You must give prominent notice with each copy of the work that the 279 | Library is used in it and that the Library and its use are covered by 280 | this License. You must supply a copy of this License. If the work 281 | during execution displays copyright notices, you must include the 282 | copyright notice for the Library among them, as well as a reference 283 | directing the user to the copy of this License. Also, you must do one 284 | of these things: 285 | 286 | a) Accompany the work with the complete corresponding 287 | machine-readable source code for the Library including whatever 288 | changes were used in the work (which must be distributed under 289 | Sections 1 and 2 above); and, if the work is an executable linked 290 | with the Library, with the complete machine-readable "work that 291 | uses the Library", as object code and/or source code, so that the 292 | user can modify the Library and then relink to produce a modified 293 | executable containing the modified Library. (It is understood 294 | that the user who changes the contents of definitions files in the 295 | Library will not necessarily be able to recompile the application 296 | to use the modified definitions.) 297 | 298 | b) Use a suitable shared library mechanism for linking with the 299 | Library. A suitable mechanism is one that (1) uses at run time a 300 | copy of the library already present on the user's computer system, 301 | rather than copying library functions into the executable, and (2) 302 | will operate properly with a modified version of the library, if 303 | the user installs one, as long as the modified version is 304 | interface-compatible with the version that the work was made with. 305 | 306 | c) Accompany the work with a written offer, valid for at 307 | least three years, to give the same user the materials 308 | specified in Subsection 6a, above, for a charge no more 309 | than the cost of performing this distribution. 310 | 311 | d) If distribution of the work is made by offering access to copy 312 | from a designated place, offer equivalent access to copy the above 313 | specified materials from the same place. 314 | 315 | e) Verify that the user has already received a copy of these 316 | materials or that you have already sent this user a copy. 317 | 318 | For an executable, the required form of the "work that uses the 319 | Library" must include any data and utility programs needed for 320 | reproducing the executable from it. However, as a special exception, 321 | the materials to be distributed need not include anything that is 322 | normally distributed (in either source or binary form) with the major 323 | components (compiler, kernel, and so on) of the operating system on 324 | which the executable runs, unless that component itself accompanies 325 | the executable. 326 | 327 | It may happen that this requirement contradicts the license 328 | restrictions of other proprietary libraries that do not normally 329 | accompany the operating system. Such a contradiction means you cannot 330 | use both them and the Library together in an executable that you 331 | distribute. 332 | 333 | 7. You may place library facilities that are a work based on the 334 | Library side-by-side in a single library together with other library 335 | facilities not covered by this License, and distribute such a combined 336 | library, provided that the separate distribution of the work based on 337 | the Library and of the other library facilities is otherwise 338 | permitted, and provided that you do these two things: 339 | 340 | a) Accompany the combined library with a copy of the same work 341 | based on the Library, uncombined with any other library 342 | facilities. This must be distributed under the terms of the 343 | Sections above. 344 | 345 | b) Give prominent notice with the combined library of the fact 346 | that part of it is a work based on the Library, and explaining 347 | where to find the accompanying uncombined form of the same work. 348 | 349 | 8. You may not copy, modify, sublicense, link with, or distribute 350 | the Library except as expressly provided under this License. Any 351 | attempt otherwise to copy, modify, sublicense, link with, or 352 | distribute the Library is void, and will automatically terminate your 353 | rights under this License. However, parties who have received copies, 354 | or rights, from you under this License will not have their licenses 355 | terminated so long as such parties remain in full compliance. 356 | 357 | 9. You are not required to accept this License, since you have not 358 | signed it. However, nothing else grants you permission to modify or 359 | distribute the Library or its derivative works. These actions are 360 | prohibited by law if you do not accept this License. Therefore, by 361 | modifying or distributing the Library (or any work based on the 362 | Library), you indicate your acceptance of this License to do so, and 363 | all its terms and conditions for copying, distributing or modifying 364 | the Library or works based on it. 365 | 366 | 10. Each time you redistribute the Library (or any work based on the 367 | Library), the recipient automatically receives a license from the 368 | original licensor to copy, distribute, link with or modify the Library 369 | subject to these terms and conditions. You may not impose any further 370 | restrictions on the recipients' exercise of the rights granted herein. 371 | You are not responsible for enforcing compliance by third parties with 372 | this License. 373 | 374 | 11. If, as a consequence of a court judgment or allegation of patent 375 | infringement or for any other reason (not limited to patent issues), 376 | conditions are imposed on you (whether by court order, agreement or 377 | otherwise) that contradict the conditions of this License, they do not 378 | excuse you from the conditions of this License. If you cannot 379 | distribute so as to satisfy simultaneously your obligations under this 380 | License and any other pertinent obligations, then as a consequence you 381 | may not distribute the Library at all. For example, if a patent 382 | license would not permit royalty-free redistribution of the Library by 383 | all those who receive copies directly or indirectly through you, then 384 | the only way you could satisfy both it and this License would be to 385 | refrain entirely from distribution of the Library. 386 | 387 | If any portion of this section is held invalid or unenforceable under any 388 | particular circumstance, the balance of the section is intended to apply, 389 | and the section as a whole is intended to apply in other circumstances. 390 | 391 | It is not the purpose of this section to induce you to infringe any 392 | patents or other property right claims or to contest validity of any 393 | such claims; this section has the sole purpose of protecting the 394 | integrity of the free software distribution system which is 395 | implemented by public license practices. Many people have made 396 | generous contributions to the wide range of software distributed 397 | through that system in reliance on consistent application of that 398 | system; it is up to the author/donor to decide if he or she is willing 399 | to distribute software through any other system and a licensee cannot 400 | impose that choice. 401 | 402 | This section is intended to make thoroughly clear what is believed to 403 | be a consequence of the rest of this License. 404 | 405 | 12. If the distribution and/or use of the Library is restricted in 406 | certain countries either by patents or by copyrighted interfaces, the 407 | original copyright holder who places the Library under this License may add 408 | an explicit geographical distribution limitation excluding those countries, 409 | so that distribution is permitted only in or among countries not thus 410 | excluded. In such case, this License incorporates the limitation as if 411 | written in the body of this License. 412 | 413 | 13. The Free Software Foundation may publish revised and/or new 414 | versions of the Lesser General Public License from time to time. 415 | Such new versions will be similar in spirit to the present version, 416 | but may differ in detail to address new problems or concerns. 417 | 418 | Each version is given a distinguishing version number. If the Library 419 | specifies a version number of this License which applies to it and 420 | "any later version", you have the option of following the terms and 421 | conditions either of that version or of any later version published by 422 | the Free Software Foundation. If the Library does not specify a 423 | license version number, you may choose any version ever published by 424 | the Free Software Foundation. 425 | 426 | 14. If you wish to incorporate parts of the Library into other free 427 | programs whose distribution conditions are incompatible with these, 428 | write to the author to ask for permission. For software which is 429 | copyrighted by the Free Software Foundation, write to the Free 430 | Software Foundation; we sometimes make exceptions for this. Our 431 | decision will be guided by the two goals of preserving the free status 432 | of all derivatives of our free software and of promoting the sharing 433 | and reuse of software generally. 434 | 435 | NO WARRANTY 436 | 437 | 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO 438 | WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. 439 | EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR 440 | OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY 441 | KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE 442 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 443 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE 444 | LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME 445 | THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 446 | 447 | 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN 448 | WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY 449 | AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU 450 | FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR 451 | CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE 452 | LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING 453 | RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A 454 | FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF 455 | SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 456 | DAMAGES. 457 | 458 | END OF TERMS AND CONDITIONS 459 | 460 | How to Apply These Terms to Your New Libraries 461 | 462 | If you develop a new library, and you want it to be of the greatest 463 | possible use to the public, we recommend making it free software that 464 | everyone can redistribute and change. You can do so by permitting 465 | redistribution under these terms (or, alternatively, under the terms of the 466 | ordinary General Public License). 467 | 468 | To apply these terms, attach the following notices to the library. It is 469 | safest to attach them to the start of each source file to most effectively 470 | convey the exclusion of warranty; and each file should have at least the 471 | "copyright" line and a pointer to where the full notice is found. 472 | 473 | 474 | Copyright (C) 475 | 476 | This library is free software; you can redistribute it and/or 477 | modify it under the terms of the GNU Lesser General Public 478 | License as published by the Free Software Foundation; either 479 | version 2.1 of the License, or (at your option) any later version. 480 | 481 | This library is distributed in the hope that it will be useful, 482 | but WITHOUT ANY WARRANTY; without even the implied warranty of 483 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 484 | Lesser General Public License for more details. 485 | 486 | You should have received a copy of the GNU Lesser General Public 487 | License along with this library; if not, write to the Free Software 488 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 489 | USA 490 | 491 | Also add information on how to contact you by electronic and paper mail. 492 | 493 | You should also get your employer (if you work as a programmer) or your 494 | school, if any, to sign a "copyright disclaimer" for the library, if 495 | necessary. Here is a sample; alter the names: 496 | 497 | Yoyodyne, Inc., hereby disclaims all copyright interest in the 498 | library `Frob' (a library for tweaking knobs) written by James Random 499 | Hacker. 500 | 501 | , 1 April 1990 502 | Ty Coon, President of Vice 503 | 504 | That's all there is to it! 505 | --------------------------------------------------------------------------------