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comparison Discovery/Src/tComm.c @ 696:cc542448fb28

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Merge
author heinrichsweikamp
date Fri, 19 Aug 2022 11:30:24 +0200
parents 667093daa937
children bc6c90e20d9e
comparison
equal deleted inserted replaced
661:87bee7cc77b3 696:cc542448fb28
1999 { 1999 {
2000 char answerOkay[] = "\r\nOK\r\n"; 2000 char answerOkay[] = "\r\nOK\r\n";
2001 char aRxBuffer[UART_CMD_BUF_SIZE]; 2001 char aRxBuffer[UART_CMD_BUF_SIZE];
2002 uint8_t sizeAnswer = sizeof(answerOkay) -1; 2002 uint8_t sizeAnswer = sizeof(answerOkay) -1;
2003 uint8_t result = HAL_OK; 2003 uint8_t result = HAL_OK;
2004 uint8_t index = 0; 2004 uint8_t indexRef = 0;
2005 uint8_t indexBuf = 0;
2005 uint8_t answer; 2006 uint8_t answer;
2006 2007
2007 memset(aRxBuffer,0,UART_CMD_BUF_SIZE); 2008 memset(aRxBuffer,0,UART_CMD_BUF_SIZE);
2008 if(HAL_UART_Receive(&UartHandle, (uint8_t*)aRxBuffer, sizeAnswer, UART_OPERATION_TIMEOUT) == HAL_OK) 2009 if(HAL_UART_Receive(&UartHandle, (uint8_t*)aRxBuffer, sizeAnswer, UART_OPERATION_TIMEOUT) == HAL_OK)
2009 { 2010 {
2010 do 2011 do
2011 { 2012 {
2012 if(answerOkay[index] != aRxBuffer[index]) 2013 if(answerOkay[indexRef] == aRxBuffer[indexBuf])
2013 { 2014 {
2014 index = sizeAnswer; 2015 indexRef++;
2015 result = HAL_ERROR; /* unexpected answer => there might be characters left in RX que => read and discard all rx bytes */
2016 do
2017 {
2018 answer = HAL_UART_Receive(&UartHandle, (uint8_t*)&aRxBuffer[index], 1, 10);
2019 if (index < UART_CMD_BUF_SIZE)
2020 {
2021 index++;
2022 }
2023 }while(answer == HAL_OK);
2024 index = sizeAnswer;
2025 } 2016 }
2026 else 2017 else
2027 { 2018 {
2028 index++; 2019 if(indexRef != 0)
2020 {
2021 indexRef = 0;
2022 }
2029 } 2023 }
2030 }while(index < sizeAnswer); 2024 indexBuf++;
2025 }while(indexBuf < sizeAnswer);
2026
2027 if(indexRef != sizeAnswer) /* unexpected answer => there might be characters left in RX que => read and check all rx bytes */
2028 {
2029 do
2030 {
2031 answer = HAL_UART_Receive(&UartHandle, (uint8_t*)&aRxBuffer[indexBuf], 1, 10);
2032 if (indexBuf < UART_CMD_BUF_SIZE)
2033 {
2034 if(answerOkay[indexRef] == aRxBuffer[indexBuf])
2035 {
2036 indexRef++;
2037 }
2038 else
2039 {
2040 if(indexRef != 0)
2041 {
2042 indexRef = 0;
2043 }
2044 }
2045 indexBuf++;
2046 }
2047 }while(answer == HAL_OK);
2048 if(indexRef != sizeAnswer)
2049 {
2050 result = HAL_ERROR;
2051 }
2052 }
2031 } 2053 }
2032 else 2054 else
2033 { 2055 {
2034 result = HAL_ERROR; 2056 result = HAL_ERROR;
2035 } 2057 }
2173 if(TxBuffer[0] != 0) /* forward command to module */ 2195 if(TxBuffer[0] != 0) /* forward command to module */
2174 { 2196 {
2175 CmdSize = strlen(TxBuffer); 2197 CmdSize = strlen(TxBuffer);
2176 if(HAL_UART_Transmit(&UartHandle, (uint8_t*)TxBuffer,CmdSize, 2000) == HAL_OK) 2198 if(HAL_UART_Transmit(&UartHandle, (uint8_t*)TxBuffer,CmdSize, 2000) == HAL_OK)
2177 { 2199 {
2178 if(BmTmpConfig == BM_CONFIG_ECHO) /* echo is not yet turned off => read and discard echo */
2179 {
2180 HAL_UART_Receive(&UartHandle, (uint8_t*)TxBuffer, CmdSize, UART_OPERATION_TIMEOUT);
2181 }
2182
2183 result = tComm_CheckAnswerOK(); 2200 result = tComm_CheckAnswerOK();
2184
2185 2201
2186 if((BmTmpConfig == BM_CONFIG_BAUD) && (result == HAL_OK) && (UartHandle.Init.BaudRate != 460800)) /* is com already switched to fast speed? */ 2202 if((BmTmpConfig == BM_CONFIG_BAUD) && (result == HAL_OK) && (UartHandle.Init.BaudRate != 460800)) /* is com already switched to fast speed? */
2187 { 2203 {
2188 HAL_UART_DeInit(&UartHandle); 2204 HAL_UART_DeInit(&UartHandle);
2189 HAL_Delay(1); 2205 HAL_Delay(1);
2190 UartHandle.Init.BaudRate = 460800; 2206 UartHandle.Init.BaudRate = 460800;
2191 HAL_UART_Init(&UartHandle); 2207 HAL_UART_Init(&UartHandle);
2208 }
2209 if((BmTmpConfig == BM_CONFIG_BAUD) && (result == HAL_OK) && (UartHandle.Init.BaudRate == 460800)) /* This shut not happen because default speed is 115200 => update module configuration */
2210 {
2211 sprintf(TxBuffer,"AT%%B8\r"); /* set default baudrate */
2212 CmdSize = strlen(TxBuffer);
2213 HAL_UART_Transmit(&UartHandle, (uint8_t*)TxBuffer,CmdSize, 2000);
2214 HAL_UART_DeInit(&UartHandle);
2215 HAL_Delay(10);
2216 UartHandle.Init.BaudRate = 115200;
2217 HAL_UART_Init(&UartHandle);
2218 sprintf(TxBuffer,"AT&W\r"); /* write configuration */
2219 CmdSize = strlen(TxBuffer);
2220 HAL_UART_Transmit(&UartHandle, (uint8_t*)TxBuffer,CmdSize, 2000);
2192 } 2221 }
2193 if(result == HAL_OK) 2222 if(result == HAL_OK)
2194 { 2223 {
2195 BmTmpConfig++; 2224 BmTmpConfig++;
2196 } 2225 }
2197 if(BmTmpConfig == BM_CONFIG_DONE) 2226 if(BmTmpConfig == BM_CONFIG_DONE)
2198 { 2227 {
2199 ConfigRetryCnt = 0; 2228 ConfigRetryCnt = 0;
2229 RestartModule = 1;
2200 } 2230 }
2201 } 2231 }
2202 } 2232 }
2203 if(result != HAL_OK) 2233 if(result != HAL_OK)
2204 { 2234 {
2208 MX_Bluetooth_PowerOff(); 2238 MX_Bluetooth_PowerOff();
2209 if(RestartModule) 2239 if(RestartModule)
2210 { 2240 {
2211 RestartModule = 0; /* only one try */ 2241 RestartModule = 0; /* only one try */
2212 ConfigRetryCnt = 200; /* used for delay to startup module again */ 2242 ConfigRetryCnt = 200; /* used for delay to startup module again */
2243
2244 if(BmTmpConfig == BM_CONFIG_ECHO) /* the module did not answer even once => try again with alternative baud rate */
2245 {
2246 HAL_UART_DeInit(&UartHandle);
2247 HAL_Delay(1);
2248 UartHandle.Init.BaudRate = 460800;
2249 HAL_UART_Init(&UartHandle);
2250 }
2213 BmTmpConfig = BM_CONFIG_RETRY; 2251 BmTmpConfig = BM_CONFIG_RETRY;
2214 } 2252 }
2215 else /* even restarting module failed => switch bluetooth off */ 2253 else /* even restarting module failed => switch bluetooth off */
2216 { 2254 {
2217 ConfigRetryCnt = 0; 2255 ConfigRetryCnt = 0;