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標(biāo)題: Symbol Putchar multiply defined 重復(fù)定義問題，大佬幫忙看下 [打印本頁]

作者: 121312 時間: 2019-9-29 09:14
標(biāo)題: Symbol Putchar multiply defined 重復(fù)定義問題，大佬幫忙看下
USART.c文件
#include "stm32f10x_rcc.h"
#include "stm32f10x_gpio.h"
#include "stm32f10x_usart.h"
#include "stm32f10x_crc.h"
#include "system_stm32f10x.h"
#include "stdio.h"
#include "USART.h"

void RCC_Configuration(void)
{
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOB,ENABLE);
}

void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
}
void USART_Configuration(void)
{
USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = 9600;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//8 bit
USART_InitStructure.USART_StopBits = USART_StopBits_1;    //1 stop  bit
USART_InitStructure.USART_Parity = USART_Parity_No;    //No parity check
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; ///Innumerable data flow control
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1,&USART_InitStructure);
USART_Cmd(USART1,ENABLE);
}
void delay_ms(u16 time)
{
  u16 i=0;
  while(time--)
  {
i=12000;
while(i--);
  }
}
int Putchar(int c)
{
if (c == '\n'){putchar('\r');}
USART_SendData(USART1,c);

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