STM32 STemWin and Interrupt Problem

[ilmete27]

Posted on April 10, 2015 at 16:52

 I'm using STM32F407ZGT6 with SSD1963 LCD controller and 800x480 TFT panel. I'm not using OS. It's working with STemWin. 

 But when I used any interrupt, code execution stops at somewhere in emWin. 

 I moved WM_Exec() (GUI refresh function) to a timer interrupt routine and I disabled the interrupt before and enabled 

 the interrupt after emWin functions.

 The code is working in this form.

 

 //Main loop

while(1)

{

_Disable_Timer_Interrupt

GUI_EndDialog(hWin, 0); //Delete GUI DIALOG

_Enable_Timer_Interrupt

HAL_Delay(500);

_Disable_Timer_Interrupt

hWin = CreateFramewin(); //Draw GUI DIALOG

_Enable_Timer_Interrupt

HAL_Delay(500);

}

 //Timer Interrupt Routine

 void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)

{

if(htim->Instance == TIM13)

{

HAL_GPIO_TogglePin(GPIOF, GPIO_PIN_8);

WM_Exec();

}

}

 I added EXTI and the code didn't work again. enable-disable interrupt before-after didn't work in this time.

 I added FREETOS and problem didn't change. 

 When I used any interrupt, code execution stops at somewhere in emWin. 

 Does anyone have any idea about this?

#stm32 #stemwin-and-interrupt

[ilmete27]

Posted on April 10, 2015 at 23:35

I solved the problem. Problem caused by GUI_Delay() function.

I replaced GUI_X_GetTime(void) and GUI_X_Delay(int ms) functions in GUI_X.c with HAL tick timer functions.

Old form;

GUI_TIMER_TIME GUI_X_GetTime(void) { return OS_TimeMS; }

void GUI_X_Delay(int ms) { 

 int tEnd = OS_TimeMS + ms;

while ((tEnd - OS_TimeMS) > 0);

}

The new form;

GUI_TIMER_TIME GUI_X_GetTime(void) { return HAL_GetTick();}

void GUI_X_Delay(int ms) { HAL_Delay(ms);}

Now I'm using Interrupts.