Posted on October 24, 2017 at 01:12Hello everybody,
I am new here and i'm just using a STM32F411RE, as a hobby today, but I have encountered a problem with compilation of my binary file. It is just not working and I am trying to figure it out for many days now so I'm hoping that you will give me some advice !
I have the following code, just to light up the led user in order to understand the process of registers, clocks, interrupts etc...
https://os.mbed.com/compiler/&sharpnav:/Essai_Led/stm32;
&sharpinclude 'stm32f4xx.h'
&sharpinclude 'system_stm32f4xx.h'
void SystemInit(void) ; /* Initialization of the system with this file */
int main() {
/* Configuration en sortie push pull de la pin 1 */
RCC->AHB1ENR = RCC->AHB1ENR | 0x00000001 ; /* Autorisation de l'horloge des p�riph�riques */
GPIOA->MODER = GPIOA->MODER | 0x00000400 ; /* mise � 01 des bits en outpout du port LED (1 ici ) */
GPIOA->OTYPER = GPIOA->OTYPER | 0xFFFFFFBF ; /* mise � 0 du bit du registre pour output push pull */
/* Configuration du timer */
RCC->APB1ENR = RCC->APB1ENR | 0x00000001 ; /* Enable clock TIM2 */
TIM2->ARR = 3332 ;
TIM2->PSC = 7199 ;
TIM2->DIER = TIM2->DIER | 0x0001 ; /* Autorisation interruption du timer */
/* Autorisation interruption */
RCC->CIR = RCC->CIR | 0x00000F00 ; /* Autorisation interruption en fonction de l'horloge*/
NVIC->ISER[0] = NVIC->ISER[0] | (1 << 28); /* activation de l'interruption 28 */
NVIC->IP[28] = NVIC->IP[28] | (1 << 4); /* Priorit� (1) */
/* Lancement du timer */
TIM2->CR1 = TIM2->CR1 | 0x0001 ;
/* Debordement Timer */
while(1)
{
}
}
void TIM2_IRQHandler(void){
TIM2->SR = TIM2->SR & 0xFFFE ; /* Remise � 0 du bit UIF */
/* Allumage LED toutes les secondes */
/* Allumage/ETEINT LED */
GPIOA->ODR = GPIOA->ODR ^ (1 << 5);
}
Have you got some remarks about it ? why my code does not work when I flash it in my MCU ?
Thanks a lot,
Charley
#incomplete-code
