Я кодирую stm32f103c8tx, используя cubemx, когда я включаю режим прослушивания адресов с прерыванием, тогда код застревает в обработчике прерывания жесткого сбоя, когда мастер (raspberry pi) отправляет условие запуска, и это не происходит каждый раз, это проблема происходит случайно. Я также запускаю прерывание таймера 6 кГц для управления импульсами ШИМ, генерируемыми из stm32
У меня есть код без прерывания, затем он застревает в цикле ожидания флага ожидания модуля. И если кто-то уже установил связь i2c между i2c и raspberry pi, можете ли вы поделиться способом настройки stm32 для i2c?
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL7;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV4;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/** Enables the Clock Security System
*/
HAL_RCC_EnableCSS();
}
/**
* @brief I2C1 Initialization Function
* @param None
* @retval None
*/
static void MX_I2C1_Init(void)
{
/* USER CODE BEGIN I2C1_Init 0 */
/* USER CODE END I2C1_Init 0 */
/* USER CODE BEGIN I2C1_Init 1 */
/* USER CODE END I2C1_Init 1 */
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 96;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_ENABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_ENABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN I2C1_Init 2 */
/* USER CODE END I2C1_Init 2 */
}
/**
/* USER CODE BEGIN 4 */
void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hi2c);
UNUSED(TransferDirection);
UNUSED(AddrMatchCode);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_I2C_AddrCallback can be implemented in the user file
*/
HAL_I2C_DisableListen_IT(&hi2c1);
HAL_I2C_Slave_Transmit(&hi2c1,mytrdata,31,5);
HAL_GPIO_TogglePin(GPIOB,GPIO_PIN_8);
sprintf(mytrdata,"%s,%.2lf,%.3lf,%.1lf,%.1lf,%s,%u",cellid,vol,cur,temperature_c,temperature,pos,crcvalue);
HAL_I2C_EnableListen_IT(&hi2c1);
}
HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint32_t tickstart = 0x00U;
/* Init tickstart for timeout management*/
tickstart = HAL_GetTick();
if(hi2c->State == HAL_I2C_STATE_READY)
{
if((pData == NULL) || (Size == 0U))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(hi2c);
/* Check if the I2C is already enabled */
if((hi2c->Instance->CR1 & I2C_CR1_PE) != I2C_CR1_PE)
{
/* Enable I2C peripheral */
__HAL_I2C_ENABLE(hi2c);
}
/* Disable Pos */
hi2c->Instance->CR1 &= ~I2C_CR1_POS;
hi2c->State = HAL_I2C_STATE_BUSY_TX;
hi2c->Mode = HAL_I2C_MODE_SLAVE;
hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
/* Prepare transfer parameters */
hi2c->pBuffPtr = pData;
hi2c->XferCount = Size;
hi2c->XferOptions = I2C_NO_OPTION_FRAME;
hi2c->XferSize = hi2c->XferCount;
/* Enable Address Acknowledge */
hi2c->Instance->CR1 |= I2C_CR1_ACK;
/* Wait until ADDR flag is set */
if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK)
{
return HAL_TIMEOUT;
}
/* Clear ADDR flag */
__HAL_I2C_CLEAR_ADDRFLAG(hi2c);
/* If 10bit addressing mode is selected */
if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)
{
/* Wait until ADDR flag is set */
if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK)
{
return HAL_TIMEOUT;
}
/* Clear ADDR flag */
__HAL_I2C_CLEAR_ADDRFLAG(hi2c);
}
while(hi2c->XferSize > 0U)
{
/* Wait until TXE flag is set */
if(I2C_WaitOnTXEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
{
/* Disable Address Acknowledge */
hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
{
return HAL_ERROR;
}
else
{
return HAL_TIMEOUT;
}
}
/* Write data to DR */
hi2c->Instance->DR = (*hi2c->pBuffPtr++);
hi2c->XferCount--;
hi2c->XferSize--;
if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (hi2c->XferSize != 0U))
{
/* Write data to DR */
hi2c->Instance->DR = (*hi2c->pBuffPtr++);
hi2c->XferCount--;
hi2c->XferSize--;
}
}
/* Wait until AF flag is set */
if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_AF, RESET, Timeout, tickstart) != HAL_OK)
{
return HAL_TIMEOUT;
}
/* Clear AF flag */
__HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
/* Disable Address Acknowledge */
hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
hi2c->State = HAL_I2C_STATE_READY;
hi2c->Mode = HAL_I2C_MODE_NONE;
/* Process Unlocked */
__HAL_UNLOCK(hi2c);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}