Posted on August 19, 2013 at 12:18hello
i'm trying to make the user button working with a simple led program here is the code and please tell me what's the problem (it worked just when i keep pushing user button then make a reset):
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#include ''stm32f4xx.h''
#include ''stm32f4_discovery.c''
#include ''stm32f4xx_gpio.c''
#include ''stm32f4xx_rcc.c''
#include ''stm32f4xx_tim.c''
#include ''misc.c''
#include ''stm32f4xx_syscfg.c''
#include ''stm32f4xx_exti.c''
#include ''wissem.c''
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* GPIOD Periph clock enable */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
/* Configure PD12, PD13, PD14 and PD15 in output pushpull mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13| GPIO_Pin_14| GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
STM_EVAL_PBInit(BUTTON_USER, BUTTON_MODE_EXTI);
while(1){
if(STM_EVAL_PBGetState(BUTTON_USER) == Bit_SET )
{
GPIO_WriteBit(GPIOD,GPIO_Pin_12,1); //ecrire le bit
delay_ms(1000);
GPIO_WriteBit(GPIOD,GPIO_Pin_12,0); //ecrire le bit
delay_ms(1000);
}
STM_EVAL_PBGetState(BUTTON_USER);
}
}
