我使用HAL_UART_Receive_IT开始通过UART在中断模式下接收数据，并且在我对电路板进行编程后似乎工作正常，因为UC进入HAL_UART_RxCpltCallback，但在重置电路板后它突然停止输入它。有人知道是什么事吗？
#include "main.h"
#include "stm32f0xx_hal.h"
/* USER CODE BEGIN Includes */
#include "st7036i.h"
#include "math.h"
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef hadc;
DMA_HandleTypeDef hdma_adc;
I2C_HandleTypeDef hi2c1;
TIM_HandleTypeDef htim1;
UART_HandleTypeDef huart1;
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
uint8_t BPG400_out[20]={};//output string for BPG400
uint8_t PCG550_out[20]={};//output string for PCG550
uint8_t BPG400_no_sig;//flag used to determine if there is no signal from BPG400 for more than 200ms
int16_t PCG550_adc;//output from PCG (12bit)
uint8_t BPG400_arr[10];//whole frame of data from BPG
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void Error_Handler(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_ADC_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_I2C1_Init(void);
static void MX_TIM1_Init(void);
static void MX_NVIC_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)//interrupt to read adc value of PCG signal every 20ms
{
static int16_t last_adc=0;//stores value of last redout from adc to deretmine if it's value has significantly changed
static uint8_t counter=0;
char PCG550_out_tmp[10];//temporarly stores printf string to get change exponent presision from 3 digits to 2
if(BPG400_no_sig>10) memcpy(BPG400_out,"BPG400 no signal ",20); else BPG400_no_sig++;//hasn't there been any data from BPG, send no signal
if(counter!=11)counter++;
if(((PCG550_adc>last_adc+10)||(last_adc-10>PCG550_adc))&&counter==11)
{
double pressure = pow(10,(double)(0.778*(double)(((double)(PCG550_adc*(double)10.38)/(double)4095)-(double)6.143)));//calculates pressure from ADC redout
if(pressure<0.0000167)memcpy(PCG550_out,"PCG550 no signal ",20);//if voltage from probe ~0, assume it's unplugged
else if(pressure<1)//different probes and correction fctors for different press ranges
{//pirani
memcpy (PCG550_out+7 , " mbar Pir. Ar", 13);
sprintf (PCG550_out_tmp, "%.2E", pressure*1.7);//converts pressure to scientific notation
PCG550_out_tmp[6]=PCG550_out_tmp[7];
memcpy (PCG550_out , PCG550_out_tmp, 7);
}else if(pressure<10)
{//crossover
memcpy (PCG550_out+7 , " mbar Cr. Ar", 13);
sprintf (PCG550_out_tmp, "%.2E", pressure);
PCG550_out_tmp[6]=PCG550_out_tmp[7];
memcpy (PCG550_out , PCG550_out_tmp, 7);
}else
{//cap
memcpy (PCG550_out+7 , " mbar Cap. Ar", 13);
sprintf (PCG550_out_tmp, "%.2E", pressure);
PCG550_out_tmp[6]=PCG550_out_tmp[7];
memcpy (PCG550_out , PCG550_out_tmp, 7);
}
last_adc=PCG550_adc;
counter=0;
}
HAL_ADC_Start_DMA(&hadc, (uint32_t *)&PCG550_adc, 1);//stars new ADC redout
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)//interrupt starts after certain am. of bits had been acquired
{
static uint8_t flag=0;//used to find valid data frame
if(BPG400_arr[8]==(0xFF&(BPG400_arr[1]+BPG400_arr[2]+BPG400_arr[3]+BPG400_arr[4]+BPG400_arr[5]+BPG400_arr[6]+BPG400_arr[7])))//checksum
{
BPG400_no_sig=0;//resets no signal flag to prevent displaying NO SIGNAL
char BPG400_val_tmp[10];//temporarly stores printf string to get change exponent presision from 3 digits to 2
double pressure = pow(10,((double)((BPG400_arr[4]<<8)+BPG400_arr[5])/(double)4000-12.5));//calculate pressure from input data
if((pressure>0.01)&&(pressure<1))//correction factors for Ar
pressure *=1.7;
else if(pressure<0.001)
pressure *=0.8;
sprintf (BPG400_val_tmp, "%.2E",pressure);//converts pressure to scientific notation
BPG400_val_tmp[6]=BPG400_val_tmp[7];
memcpy (BPG400_out , BPG400_val_tmp, 7);
memcpy (BPG400_out+7 , " mbar", 5);
switch (BPG400_arr[2]&0b11)
{
case 0b00:
memcpy (BPG400_out+12 , " -", 2);
break;
case 0b01:
memcpy (BPG400_out+12 , " e", 2);
break;
case 0b10:
memcpy (BPG400_out+12 , " E", 2);
break;
case 0b11:
memcpy (BPG400_out+12 , " D", 2);
break;
}
switch (BPG400_arr[3]&0b1111)
{
case 0b0000:
memcpy (BPG400_out+14 , " ok Ar", 6);
break;
case 0b0101:
memcpy (BPG400_out, "Pirani adj. poorly ", 20);
break;
case 0b1000:
memcpy (BPG400_out, "BA error ", 20);
break;
case 0b1001:
memcpy (BPG400_out, "Pirani error ", 20);
break;
}
HAL_UART_Receive_IT(&huart1, BPG400_arr, 9);//starts next 9 bit data acquisition
}else
{
if (!flag)//if we start data acquisition in the middle of a frame, try probing 8 bits to shift data frame to correct stating point
{
HAL_UART_Receive_IT(&huart1, BPG400_arr, 8);
flag=1;
}else
{
HAL_UART_Receive_IT(&huart1, BPG400_arr, 9);
flag=0;
}
}
}
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_ADC_Init();
MX_USART1_UART_Init();
MX_I2C1_Init();
MX_TIM1_Init();
/* Initialize interrupts */
MX_NVIC_Init();
/* USER CODE BEGIN 2 */
HAL_UART_Receive_IT(&huart1, BPG400_arr, 9);//trigger interrupt after 9 bits
HAL_TIM_Base_Start_IT(&htim1);//start interrupt for PCG
HAL_ADC_Start_DMA(&hadc, (uint32_t *)&PCG550_adc, 1);//starts ADC DMA
disp_init();//initialize display
disp_setpos(1,0);//set dips. cursor to top left
memcpy(PCG550_out,"PCG550 no signal ",20);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
disp_home();//updating display every 100ms
disp_puts(BPG400_out);
disp_setpos(1,0);
disp_puts(PCG550_out);
HAL_Delay(100);
}
/* USER CODE END 3 */
}
/** System Clock Configuration
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInit;
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_HSI14;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSI14State = RCC_HSI14_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.HSI14CalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
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_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_I2C1;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_HSI;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
/**Configure the Systick interrupt time
*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/**Configure the Systick
*/
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/** NVIC Configuration
*/
static void MX_NVIC_Init(void)
{
/* USART1_IRQn interrupt configuration */
HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(USART1_IRQn);
/* DMA1_Channel1_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
/* TIM1_BRK_UP_TRG_COM_IRQn interrupt configuration */
HAL_NVIC_SetPriority(TIM1_BRK_UP_TRG_COM_IRQn, 1, 0);
HAL_NVIC_EnableIRQ(TIM1_BRK_UP_TRG_COM_IRQn);
}
/* ADC init function */
static void MX_ADC_Init(void)
{
ADC_ChannelConfTypeDef sConfig;
/**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)
*/
hadc.Instance = ADC1;
hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
hadc.Init.Resolution = ADC_RESOLUTION_12B;
hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
hadc.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
hadc.Init.LowPowerAutoWait = DISABLE;
hadc.Init.LowPowerAutoPowerOff = DISABLE;
hadc.Init.ContinuousConvMode = DISABLE;
hadc.Init.DiscontinuousConvMode = DISABLE;
hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
hadc.Init.DMAContinuousRequests = DISABLE;
hadc.Init.Overrun = ADC_OVR_DATA_PRESERVED;
if (HAL_ADC_Init(&hadc) != HAL_OK)
{
Error_Handler();
}
/**Configure for the selected ADC regular channel to be converted.
*/
sConfig.Channel = ADC_CHANNEL_0;
sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
{
Error_Handler();
}
}
/* I2C1 init function */
static void MX_I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.Timing = 0x2000090E;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
/**Configure Analogue filter
*/
if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
{
Error_Handler();
}
}
/* TIM1 init function */
static void MX_TIM1_Init(void)
{
TIM_ClockConfigTypeDef sClockSourceConfig;
TIM_MasterConfigTypeDef sMasterConfig;
htim1.Instance = TIM1;
htim1.Init.Prescaler = 0;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 32000;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim1.Init.RepetitionCounter = 0;
htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
}
/* USART1 init function */
static void MX_USART1_UART_Init(void)
{
huart1.Instance = USART1;
huart1.Init.BaudRate = 9600;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
}
/**
* Enable DMA controller clock
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA1_CLK_ENABLE();
}
/** Configure pins as
* Analog
* Input
* Output
* EVENT_OUT
* EXTI
*/
static void MX_GPIO_Init(void)
{
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler */
/* User can add his own implementation to report the HAL error return state */
while(1)
{
}
/* USER CODE END Error_Handler */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
答案 0 :(得分：0)
在HAL_UART_RxCpltCallback中，您正在调用HAL_UART_Receive_IT，通过该HAL_UART_RxCpltCallback创建recursion，直到堆栈溢出。
请注意，HAL_UART_IRQHandler -> UART_Receive_IT -> HAL_UART_RxCpltCallback正在中断线程中运行，不建议使用sprintf和其他慢速操作。
调用图如下：
Branches