Posted on December 26, 2016 at 17:51
hi all.
running the demonstrations project on STM32F4X9-EVAL on the EVAL board works fine.
in my project i need to conserve power so i need to go into stop,ode while system is idle.
stop mode will require GUI_Exit() and GUI_Init() again and again. here is where i run into problem. first init sequnce goes OK, but after applying GUI_Exit() and then GUI_Init() - system runs into hard fault during init.
tried to run the subject project with minor change :
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 180 MHz */
SystemClock_Config();
/* Enable CRC to Unlock GUI */
__HAL_RCC_CRC_CLK_ENABLE();
/* Initialize GUI */
GUI_Init();
HAL_Delay(10);
GUI_Exit();
HAL_Delay(10);
/* Initialize GUI */
GUI_Init(); - HARD FAULT HERE.
.
.
.
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tried the same on STeMwin 'Hello World' project - it runs fine.
trying to figure out what's the differences between those 2 projects and the cause for that problem
P.s : matched clock speed to 168 MHz, at both projects.
examples were taken from CUBE V1.13
Thank You.
#emwin #rtos #freertos #low-power
