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TombrownBottom · 2024-05-23

Hi,I have defined a function, that when called, from the main.c while loop works fine. When the same function is called from an interrupt it fails to work.In debug mode I can see that the interrupt function (void HAL_GPIO_EXTI_Callback(uint16_t GPIO_...

TombrownBottom · 2024-05-17

Here is the method defined in the .h file: void ILI9341_DrawText(const char* str, const uint8_t font[], uint16_t X, uint16_t Y, uint16_t color, uint16_t bgcolor); the method defined in the .c file: void ILI9341_DrawText(const char* str, const uint8_...

TombrownBottom · 2024-05-23

Here is my code: The interrupt:void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)// interrupt routine works!{if(GPIO_Pin == GPIO_PIN_0){update();}else if (GPIO_Pin == GPIO_PIN_7){interrupt2 = true;} else{__NOP();}} The update function:void update(void){i...

TombrownBottom · 2024-05-23

The alternative to set a boolean and test for it in the main loop works. Thanks.In the interest of minimising code and making it more "readable" im still interested to find out why my first approach does not work.

TombrownBottom · 2024-05-23

Thanks for your help.See Pic.When you say set the interrupt priorities of DMA higher than the EXTI do you mean as defined in the picture above?I have changed the value in the priority field from low to very high. This has not resolved the issue.

TombrownBottom · 2024-05-23

sorry I forgot to add, Im using an STM32F373 MCU.

TombrownBottom · 2024-05-17

Ok, I have worked it out myself. For the benefit of others.......I have added:char text[10];// create a string to hold the int value after conversion to string itoa(number, text, 10);//function to convert the int into a string (3rd argument 10 = base...

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A function fails when called from an interrupt

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