├── .github └── FUNDING.yml ├── ATC.c ├── ATC.h ├── ATCConfig.h ├── LICENSE └── README.md /.github/FUNDING.yml: -------------------------------------------------------------------------------- 1 | # These are supported funding model platforms 2 | 3 | github: [nimaltd] 4 | patreon: # Replace with a single Patreon username 5 | open_collective: # Replace with a single Open Collective username 6 | ko_fi: nimaltd 7 | tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel 8 | community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry 9 | liberapay: #nimaltd 10 | issuehunt: #nimaltd 11 | otechie: # Replace with a single Otechie username 12 | custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2'] 13 | -------------------------------------------------------------------------------- /ATC.c: -------------------------------------------------------------------------------- 1 | 2 | #include "ATC.h" 3 | #include 4 | #include 5 | 6 | uint8_t atc_cnt; 7 | ATC_t atc_elements[ATC_MAX_ELEMENTS]; 8 | 9 | //##################################################################################################### 10 | __weak void atc_userFoundString(ATC_Element_t ATC_Element, const char* foundStr, char* startPtr) 11 | { 12 | 13 | } 14 | //##################################################################################################### 15 | void atc_callback(ATC_Element_t ATC_Element) 16 | { 17 | if(LL_USART_IsActiveFlag_RXNE(atc_elements[ATC_Element].usart) && LL_USART_IsEnabledIT_RXNE(atc_elements[ATC_Element].usart)) 18 | { 19 | if(atc_elements[ATC_Element].rxIndex < atc_elements[ATC_Element].rxSize - 1) 20 | { 21 | atc_elements[ATC_Element].rxBuffer[atc_elements[ATC_Element].rxIndex] = LL_USART_ReceiveData8(atc_elements[ATC_Element].usart); 22 | atc_elements[ATC_Element].rxIndex++; 23 | } 24 | else 25 | LL_USART_ReceiveData8(atc_elements[ATC_Element].usart); 26 | } 27 | atc_elements[ATC_Element].rxTime = HAL_GetTick(); 28 | } 29 | //##################################################################################################### 30 | void atc_callback_txDMA(ATC_Element_t ATC_Element) 31 | { 32 | #if (ATC_TXDMA == 1) 33 | switch(atc_elements[ATC_Element].txDMA_Stream) 34 | { 35 | case LL_DMA_STREAM_0: 36 | if(LL_DMA_IsActiveFlag_TC0(atc_elements[ATC_Element].txDMA)) 37 | { 38 | LL_DMA_ClearFlag_TC0(atc_elements[ATC_Element].txDMA); 39 | atc_elements[ATC_Element].txDMAdone = 1; 40 | } 41 | break; 42 | case LL_DMA_STREAM_1: 43 | if(LL_DMA_IsActiveFlag_TC1(atc_elements[ATC_Element].txDMA)) 44 | { 45 | LL_DMA_ClearFlag_TC1(atc_elements[ATC_Element].txDMA); 46 | atc_elements[ATC_Element].txDMAdone = 1; 47 | } 48 | break; 49 | case LL_DMA_STREAM_2: 50 | if(LL_DMA_IsActiveFlag_TC2(atc_elements[ATC_Element].txDMA)) 51 | { 52 | LL_DMA_ClearFlag_TC2(atc_elements[ATC_Element].txDMA); 53 | atc_elements[ATC_Element].txDMAdone = 1; 54 | } 55 | break; 56 | case LL_DMA_STREAM_3: 57 | if(LL_DMA_IsActiveFlag_TC3(atc_elements[ATC_Element].txDMA)) 58 | { 59 | LL_DMA_ClearFlag_TC3(atc_elements[ATC_Element].txDMA); 60 | atc_elements[ATC_Element].txDMAdone = 1; 61 | } 62 | break; 63 | case LL_DMA_STREAM_4: 64 | if(LL_DMA_IsActiveFlag_TC4(atc_elements[ATC_Element].txDMA)) 65 | { 66 | LL_DMA_ClearFlag_TC4(atc_elements[ATC_Element].txDMA); 67 | atc_elements[ATC_Element].txDMAdone = 1; 68 | } 69 | break; 70 | case LL_DMA_STREAM_5: 71 | if(LL_DMA_IsActiveFlag_TC5(atc_elements[ATC_Element].txDMA)) 72 | { 73 | LL_DMA_ClearFlag_TC5(atc_elements[ATC_Element].txDMA); 74 | atc_elements[ATC_Element].txDMAdone = 1; 75 | } 76 | break; 77 | case LL_DMA_STREAM_6: 78 | if(LL_DMA_IsActiveFlag_TC6(atc_elements[ATC_Element].txDMA)) 79 | { 80 | LL_DMA_ClearFlag_TC6(atc_elements[ATC_Element].txDMA); 81 | atc_elements[ATC_Element].txDMAdone = 1; 82 | } 83 | break; 84 | case LL_DMA_STREAM_7: 85 | if(LL_DMA_IsActiveFlag_TC7(atc_elements[ATC_Element].txDMA)) 86 | { 87 | LL_DMA_ClearFlag_TC7(atc_elements[ATC_Element].txDMA); 88 | atc_elements[ATC_Element].txDMAdone = 1; 89 | } 90 | break; 91 | } 92 | #endif 93 | } 94 | //##################################################################################################### 95 | void atc_process(void) 96 | { 97 | for(uint8_t el = 0; el < atc_cnt ; el++) 98 | { 99 | if((atc_elements[el].rxIndex > 0) && (HAL_GetTick() - atc_elements[el].rxTime > atc_elements[el].rxTimeout)) 100 | { 101 | // +++ answer AtCommand 102 | for(uint8_t ans = 0 ; ans < ATC_MAX_ANSWER_SEARCHING_STRING ; ans++) 103 | { 104 | if(atc_elements[el].answerSearchingString[ans] == NULL) 105 | break; 106 | char *ansStr = strstr((char*)atc_elements[el].rxBuffer, atc_elements[el].answerSearchingString[ans]); 107 | if(ansStr != NULL) 108 | { 109 | if(atc_elements[el].foundAnswerString != NULL) 110 | strncpy(atc_elements[el].foundAnswerString, ansStr, atc_elements[el].foundAnswerSize); 111 | atc_elements[el].foundAnswer = ans; 112 | break; 113 | } 114 | } 115 | // --- answer AtCommand 116 | // +++ auto searching 117 | for(uint8_t au = 0 ; au < ATC_MAX_ALWAYS_SEARCHING_STRING ; au++) 118 | { 119 | if(atc_elements[el].alwaysSearchingString[au] == NULL) 120 | break; 121 | char *autoStr = strstr((char*)atc_elements[el].rxBuffer, atc_elements[el].alwaysSearchingString[au]); 122 | if(autoStr != NULL) 123 | { 124 | atc_userFoundString((ATC_Element_t)el, atc_elements[el].alwaysSearchingString[au], autoStr); 125 | } 126 | } 127 | // --- auto searching 128 | atc_elements[el].rxIndex = 0; 129 | memset(atc_elements[el].rxBuffer, 0, atc_elements[el].rxSize); 130 | } 131 | } 132 | } 133 | //##################################################################################################### 134 | uint8_t atc_sendString(ATC_Element_t ATC_Element, char *str, uint32_t timeout) 135 | { 136 | if((ATC_Element < ATC_Element_0) || (ATC_Element >= atc_cnt)) 137 | return 0; 138 | while(atc_elements[ATC_Element].txBusy == 1) 139 | atc_delay(1); 140 | atc_elements[ATC_Element].txBusy = 1; 141 | uint32_t startTime = HAL_GetTick(); 142 | #if (ATC_TXDMA == 0) 143 | for(uint16_t i = 0 ; i timeout) 148 | { 149 | atc_elements[ATC_Element].txBusy = 0; 150 | return 0; 151 | } 152 | } 153 | LL_USART_TransmitData8(atc_elements[ATC_Element].usart, str[i]); 154 | } 155 | while (!LL_USART_IsActiveFlag_TC(atc_elements[ATC_Element].usart)) 156 | { 157 | if(HAL_GetTick() - startTime > timeout) 158 | { 159 | atc_elements[ATC_Element].txBusy = 0; 160 | return 0; 161 | } 162 | } 163 | #endif 164 | #if (ATC_TXDMA == 1) 165 | atc_elements[ATC_Element].txDMAdone = 0; 166 | LL_DMA_ConfigAddresses(atc_elements[ATC_Element].txDMA, atc_elements[ATC_Element].txDMA_Stream,\ 167 | (uint32_t)str, LL_USART_DMA_GetRegAddr(atc_elements[ATC_Element].usart),\ 168 | LL_DMA_GetDataTransferDirection(atc_elements[ATC_Element].txDMA, atc_elements[ATC_Element].txDMA_Stream)); 169 | LL_DMA_SetDataLength(atc_elements[ATC_Element].txDMA, atc_elements[ATC_Element].txDMA_Stream, strlen(str)); 170 | LL_DMA_EnableStream(atc_elements[ATC_Element].txDMA, atc_elements[ATC_Element].txDMA_Stream); 171 | while(atc_elements[ATC_Element].txDMAdone == 0) 172 | { 173 | if(HAL_GetTick() - startTime > timeout) 174 | { 175 | LL_DMA_DisableStream(atc_elements[ATC_Element].txDMA, atc_elements[ATC_Element].txDMA_Stream); 176 | atc_elements[ATC_Element].txBusy = 0; 177 | return 0; 178 | } 179 | atc_delay(1); 180 | } 181 | #endif 182 | atc_elements[ATC_Element].txBusy = 0; 183 | return 1; 184 | } 185 | //##################################################################################################### 186 | uint8_t atc_sendData(ATC_Element_t ATC_Element, uint8_t *data, uint16_t size, uint32_t timeout) 187 | { 188 | if((ATC_Element < ATC_Element_0) || (ATC_Element >= atc_cnt)) 189 | return 0; 190 | while(atc_elements[ATC_Element].txBusy == 1) 191 | atc_delay(1); 192 | atc_elements[ATC_Element].txBusy = 1; 193 | uint32_t startTime = HAL_GetTick(); 194 | #if (ATC_TXDMA == 0) 195 | for (uint16_t i = 0; i timeout) 200 | { 201 | atc_elements[ATC_Element].txBusy = 0; 202 | return 0; 203 | } 204 | } 205 | LL_USART_TransmitData8(atc_elements[ATC_Element].usart, data[i]); 206 | } 207 | while (!LL_USART_IsActiveFlag_TC(atc_elements[ATC_Element].usart)) 208 | { 209 | if(HAL_GetTick() - startTime > timeout) 210 | { 211 | atc_elements[ATC_Element].txBusy = 0; 212 | return 0; 213 | } 214 | } 215 | #endif 216 | #if (ATC_TXDMA == 1) 217 | atc_elements[ATC_Element].txDMAdone = 0; 218 | LL_DMA_ConfigAddresses(atc_elements[ATC_Element].txDMA, atc_elements[ATC_Element].txDMA_Stream,\ 219 | (uint32_t)data, LL_USART_DMA_GetRegAddr(atc_elements[ATC_Element].usart),\ 220 | LL_DMA_GetDataTransferDirection(atc_elements[ATC_Element].txDMA, atc_elements[ATC_Element].txDMA_Stream)); 221 | LL_DMA_SetDataLength(atc_elements[ATC_Element].txDMA, atc_elements[ATC_Element].txDMA_Stream, size); 222 | while(atc_elements[ATC_Element].txDMAdone == 0) 223 | { 224 | atc_delay(1); 225 | if(HAL_GetTick() - startTime > timeout) 226 | { 227 | atc_elements[ATC_Element].txBusy = 0; 228 | return 0; 229 | } 230 | } 231 | #endif 232 | atc_elements[ATC_Element].txBusy = 0; 233 | return 1; 234 | } 235 | //##################################################################################################### 236 | uint8_t atc_sendAtCommand(ATC_Element_t ATC_Element, char *atCommand, uint32_t wait_ms, char *answerString, uint16_t answerSize, uint8_t searchingItems,...) 237 | { 238 | if((ATC_Element < ATC_Element_0) || (ATC_Element >= atc_cnt)) 239 | return 0; 240 | atc_process(); 241 | uint32_t startTime; 242 | atc_elements[ATC_Element].foundAnswerSize = answerSize; 243 | atc_elements[ATC_Element].foundAnswerString = answerString; 244 | va_list tag; 245 | va_start (tag,searchingItems); 246 | for(uint8_t i=0; i= 0) 271 | { 272 | retValue = atc_elements[ATC_Element].foundAnswer + 1; 273 | break; 274 | } 275 | if(HAL_GetTick() - startTime > wait_ms) 276 | { 277 | if(searchingItems == 0) 278 | retValue = 1; 279 | break; 280 | } 281 | } 282 | SEND_FAILD: 283 | #if (ATC_CMSIS_OS == 0) 284 | for(uint8_t i = 0 ; i < ATC_MAX_ANSWER_SEARCHING_STRING ; i++) 285 | { 286 | free(atc_elements[ATC_Element].answerSearchingString[i]); 287 | atc_elements[ATC_Element].answerSearchingString[i] = NULL; 288 | } 289 | free(atc_elements[ATC_Element].foundAnswerString); 290 | atc_elements[ATC_Element].foundAnswerString = NULL; 291 | #endif 292 | #if (ATC_CMSIS_OS == 1) 293 | for(uint8_t i = 0 ; i < ATC_MAX_ANSWER_SEARCHING_STRING ; i++) 294 | { 295 | vPortFree(atc_elements[ATC_Element].answerSearchingString[i]); 296 | atc_elements[ATC_Element].answerSearchingString[i] = NULL; 297 | } 298 | #endif 299 | return retValue; 300 | } 301 | //##################################################################################################### 302 | ATC_Element_t atc_getElementByName(char *name) 303 | { 304 | for(uint8_t i = 0 ; i < ATC_MAX_ELEMENTS ; i++) 305 | { 306 | if(strcmp(atc_elements[i].name, name) == 0) 307 | return (ATC_Element_t)i; 308 | } 309 | return ATC_Element_Error; 310 | } 311 | //##################################################################################################### 312 | bool atc_addAutoSearchString(ATC_Element_t ATC_Element, char *str) 313 | { 314 | if((ATC_Element < ATC_Element_0) || (ATC_Element >= atc_cnt)) 315 | return false; 316 | for(uint8_t s = 0; s < ATC_MAX_ALWAYS_SEARCHING_STRING ; s++) 317 | { 318 | if(atc_elements[ATC_Element].alwaysSearchingString[s] == NULL) 319 | { 320 | #if (ATC_CMSIS_OS == 0) 321 | atc_elements[ATC_Element].alwaysSearchingString[s] = malloc(strlen(str)); 322 | #endif 323 | #if (ATC_CMSIS_OS == 1) 324 | atc_elements[ATC_Element].alwaysSearchingString[s] = pvPortMalloc(strlen(str)); 325 | #endif 326 | if(atc_elements[ATC_Element].alwaysSearchingString[s] != NULL) 327 | { 328 | strcpy(atc_elements[ATC_Element].alwaysSearchingString[s], str); 329 | return true; 330 | } 331 | else 332 | break; 333 | } 334 | } 335 | return false; 336 | } 337 | //##################################################################################################### 338 | uint16_t atc_getSize(ATC_Element_t ATC_Element) 339 | { 340 | return sizeof(atc_elements[ATC_Element]); 341 | } 342 | //##################################################################################################### 343 | #if (ATC_TXDMA == 0) 344 | bool atc_init(ATC_Element_t ATC_Element, USART_TypeDef *usart, uint16_t rxSize, uint16_t rxTimeout, char* name) 345 | #endif 346 | #if (ATC_TXDMA == 1) 347 | bool atc_init(ATC_Element_t ATC_Element, USART_TypeDef *usart, uint16_t rxSize, uint16_t rxTimeout, char* name, DMA_TypeDef *DMA, uint32_t LL_DMA_STREAM_) 348 | #endif 349 | { 350 | if(ATC_Element != atc_cnt) 351 | return false; 352 | memset(&atc_elements[ATC_Element], 0, sizeof(ATC_t)); 353 | atc_elements[ATC_Element].usart = usart; 354 | atc_elements[ATC_Element].rxSize = rxSize; 355 | atc_elements[ATC_Element].rxTimeout = rxTimeout; 356 | strncpy(atc_elements[ATC_Element].name, name, 8); 357 | #if (ATC_TXDMA == 1) 358 | 359 | atc_elements[ATC_Element].txDMA = DMA; 360 | atc_elements[ATC_Element].txDMA_Stream = LL_DMA_STREAM_; 361 | LL_DMA_EnableIT_TC(atc_elements[ATC_Element].txDMA, atc_elements[ATC_Element].txDMA_Stream); 362 | LL_USART_EnableDMAReq_TX(atc_elements[ATC_Element].usart); 363 | #endif 364 | #if (ATC_CMSIS_OS == 0) 365 | atc_elements[ATC_Element].rxBuffer = malloc(rxSize); 366 | #endif 367 | #if (ATC_CMSIS_OS == 1) 368 | atc_elements[ATC_Element].rxBuffer = pvPortMalloc(rxSize); 369 | #endif 370 | if(atc_elements[ATC_Element].rxBuffer != NULL) 371 | { 372 | atc_cnt++; 373 | LL_USART_EnableIT_RXNE(atc_elements[ATC_Element].usart); 374 | return true; 375 | } 376 | return false; 377 | } 378 | //##################################################################################################### 379 | -------------------------------------------------------------------------------- /ATC.h: -------------------------------------------------------------------------------- 1 | #ifndef _ATC_H_ 2 | #define _ATC_H_ 3 | 4 | 5 | /* 6 | Author: Nima Askari 7 | WebSite: http://www.github.com/NimaLTD 8 | Instagram: http://instagram.com/github.NimaLTD 9 | Youtube: https://www.youtube.com/channel/UCUhY7qY1klJm1d2kulr9ckw 10 | 11 | Version: 2.1.0 12 | 13 | Reversion History: 14 | 15 | (2.1.0) 16 | fix bugs. 17 | 18 | (2.0.0) 19 | fix bugs. 20 | 21 | (2.0.0) 22 | First release. 23 | */ 24 | 25 | #include "main.h" 26 | #include "atcconfig.h" 27 | #include 28 | #include 29 | 30 | #ifdef __cplusplus 31 | extern "C" 32 | { 33 | #endif 34 | 35 | #if ATC_CMSIS_OS == 0 36 | #define atc_delay(x) HAL_Delay(x) 37 | #else 38 | #include "cmsis_os.h" 39 | #define atc_delay(x) osDelay(x) 40 | #endif 41 | 42 | typedef struct 43 | { 44 | USART_TypeDef* usart; 45 | char name[8]; 46 | uint32_t rxTime; 47 | uint8_t* rxBuffer; 48 | uint8_t rxTmp; 49 | uint16_t rxIndex; 50 | uint16_t rxSize; 51 | uint16_t rxTimeout; 52 | uint8_t txBusy; 53 | int8_t foundAnswer; 54 | uint16_t foundAnswerSize; 55 | char* foundAnswerString; 56 | char* answerSearchingString[ATC_MAX_ANSWER_SEARCHING_STRING]; 57 | char* alwaysSearchingString[ATC_MAX_ALWAYS_SEARCHING_STRING]; 58 | #if (ATC_TXDMA == 1) 59 | DMA_TypeDef* txDMA; 60 | uint32_t txDMA_Stream; 61 | uint8_t txDMAdone; 62 | #endif 63 | 64 | }ATC_t; 65 | 66 | typedef enum 67 | { 68 | ATC_Element_Error = -1, 69 | ATC_Element_0, 70 | ATC_Element_1, 71 | ATC_Element_2, 72 | ATC_Element_3, 73 | ATC_Element_4, 74 | 75 | }ATC_Element_t; 76 | 77 | //################################################################################### 78 | void atc_process(void); // put in main loop. 79 | void atc_callback(ATC_Element_t ATC_Element); // put in usart callback 80 | void atc_callback_txDMA(ATC_Element_t ATC_Element); // put in usart txDMA callback 81 | #if (ATC_TXDMA == 1) 82 | bool atc_init(ATC_Element_t ATC_Element, USART_TypeDef *usart, uint16_t rxSize, uint16_t rxTimeout, char* name, DMA_TypeDef *DMA, uint32_t LL_DMA_STREAM_); 83 | #else 84 | bool atc_init(ATC_Element_t ATC_Element, USART_TypeDef *usart, uint16_t rxSize, uint16_t rxTimeout, char* name); 85 | #endif 86 | uint8_t atc_sendAtCommand(ATC_Element_t ATC_Element, char *atCommand, uint32_t wait_ms, char *answerString, uint16_t answerSize, uint8_t searchingItems,...); 87 | bool atc_addAutoSearchString(ATC_Element_t ATC_Element, char *str); 88 | 89 | uint8_t atc_sendString(ATC_Element_t ATC_Element, char *str, uint32_t timeout); 90 | uint8_t atc_sendData(ATC_Element_t ATC_Element, uint8_t *data, uint16_t size, uint32_t timeout); 91 | ATC_Element_t atc_getElementByName(char *name); 92 | uint16_t atc_getSize(ATC_Element_t ATC_Element); 93 | 94 | void atc_userFoundString(ATC_Element_t ATC_Element, const char* foundStr, char* startPtr); 95 | //################################################################################### 96 | 97 | #ifdef __cplusplus 98 | } 99 | #endif 100 | 101 | #endif 102 | -------------------------------------------------------------------------------- /ATCConfig.h: -------------------------------------------------------------------------------- 1 | #ifndef _ATCCONFIG_H_ 2 | #define _ATCCONFIG_H_ 3 | 4 | // 0: os disable 5 | // 1: cmsis_os V1 6 | // 2: cmsis_os V2 not supported yet 7 | 8 | #define ATC_CMSIS_OS (1) 9 | #define ATC_TXDMA (1) 10 | #define ATC_MAX_ELEMENTS (1) 11 | #define ATC_MAX_ALWAYS_SEARCHING_STRING (10) 12 | #define ATC_MAX_ANSWER_SEARCHING_STRING (5) 13 | 14 | #endif 15 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. 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But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # STM32 AT-Command LL Library 2 | 3 | * http://www.github.com/NimaLTD 4 | * https://www.instagram.com/github.nimaltd/ 5 | * https://www.youtube.com/channel/UCUhY7qY1klJm1d2kulr9ckw 6 | 7 | please use https://github.com/nimaltd/atc 8 | 9 | This is the AT-Command STM32 LL Library 10 | 11 | How to use this Library: 12 | * Select "General peripheral Initalizion as a pair of '.c/.h' file per peripheral" on project settings. 13 | * Enable USART and enable interrupt. 14 | * Enable TX DMA is optional. 15 | * Enable FREERTOS is optional. 16 | * Add atc_callback() into USART IRQ callback. 17 | * If Enabled TX DMA, Add atc_callback_txDMA() into DMA callback. 18 | * Include Header and source into your project. 19 | * Config "ATCConfig.h". 20 | * Call atc_init( .. .. .. ). 21 | 22 | ``` 23 | #include "atc.h" 24 | 25 | char answerString[128]; 26 | uint8_t foundAnswer; 27 | int main() 28 | { 29 | atc_init(ATC_Element_0, USART3, 256, 50, "WIFI", DMA1, LL_DMA_STREAM_3); 30 | foundAnswer = atc_sendAtCommand(ATC_Element_0, "AT\r\n", 3000, answerString, 128, 2, "OK\r\n", "ERROR\r\n"); 31 | 32 | while(1) 33 | { 34 | atc_process(); 35 | } 36 | } 37 | ``` 38 | in stm32f4xx_it.c 39 | ``` 40 | void USART3_IRQHandler(void) 41 | { 42 | atc_callback(ATC_Element_0); 43 | } 44 | 45 | // if use tx dma 46 | void DMA1_Stream3_IRQHandler(void) 47 | { 48 | atc_callback_txDMA(ATC_Element_0); 49 | } 50 | 51 | 52 | ``` 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | --------------------------------------------------------------------------------