Hi, I have written this code.Stm32F107
#include <stdio.h> #include <string.h> #include "stm32f10x_gpio.h" #include "stm32f10x_rcc.h" #include "stm32f10x_tim.h" void delay(void){ int i,j; for(i=0;i<10000;i++) for(j=0;j<250;j++); } int main(void){ GPIO_InitTypeDef GPStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE); GPStructure.GPIO_Mode=GPIO_Mode_Out_PP; GPStructure.GPIO_Pin=GPIO_Pin_3; GPStructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_Init(GPIOA,&GPStructure); while(1){ GPIO_SetBits(GPIOA,GPIO_Pin_3); delay();delay();delay();delay();delay();delay(); GPIO_ResetBits(GPIOA,GPIO_Pin_3); delay();delay(); } }
I expect output voltage greater than 2.82 for output voltage level and 0 for low level but I get 1.3 for high output voltage level!!!!! However it works fine for other ports (PB , ...)