stm32H743IIT6 freeRTOS stop after one time defaultTask ran

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1

Hi stm Community,

I have an issue with freeRTOS when I add DHT22 initial and getdata function to the default task. I tried many options but had no success. I set up freeRTOS v2 in MX and built a second task. add my dht22 library to main.c and initialize it in default task:

void StartDefaultTask(void *argument)
{

/* USER CODE BEGIN 5 */

DWT_Delay_Init();

DHT22_Init(DHT22_GPIO_Port, DHT22_Pin);

/* Infinite loop */

for(;;)

{b++;

DHT22_GetTemp_Humidity(&temperature,&humidity);

HAL_GPIO_TogglePin(LED2_GPIO_Port,LED2_Pin);

osDelay(1000);

}

/* USER CODE END 5 */

}

after I compiled it, I found just one temperature and humidity data and after that MCU not working and LEDs kept ON.

I put global variable b to count how many times the default task ran and it sticks on “1”.

how can I solve this problem?

total heap size: one-time default next time on 65536

task stack size 8192

Screenshot 2024-01-15 062944

2

The first thing to do is see what the processor is doing at this time.

What task is running, and why it isn’t giving up the processor.

3

Ensure that the counter b is volatile. Otherwise it might not work as expected at least with an optimized build.
Since you have a debugger attached just put a breakpoint at e.g. DHT22_Init and step through the code to see what’s going on.