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guowenxue

2018-02-04 785deec23b4cb1e7c4c4d81eb808f195adb1d98a

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/**************************************************************************** 
*   Copyright: (C)2014 Î人ÁèÔÆǶÈëʽʵÑéÊÒ www.emblinux.com 
*      Author: GuoWenxue<guowenxue@gmail.com> QQ: 281143292 
* Description: ·Ü¶·STM32v5¿ª·¢°å´®¿Ú²Ù×÷º¯Êý½Ó¿Ú,printf¹³×Óº¯Êýfputc 
*  
*   ChangeLog: 
*        °æ±¾ºÅ     ÈÕÆÚ       ×÷Õß      ËµÃ÷ 
*        V1.0.0  2014.08.25  GuoWenxue   ·¢²¼¸Ã°æ±¾ 
****************************************************************************/ 
#include "stm32f10x.h" 
#include "stm32f10x_usart.h" 
#include "stm32v5_uart.h" 
#include <stdio.h> 
 
  /* USARTx configured as follow: 
        - BaudRate = 115200 baud   
        - Word Length = 8 Bits 
        - One Stop Bit 
        - No parity 
        - Hardware flow control disabled (RTS and CTS signals) 
        - Receive and transmit enabled 
  */ 
void USART_Config(USART_TypeDef* USARTx) 
{ 
    USART_InitTypeDef USART_InitStructure; 
     
  /* Configure USART1 */     
  USART_InitStructure.USART_BaudRate = 115200;                        //ËÙÂÊ115200bps 
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;        //Êý¾Ýλ8λ 
  USART_InitStructure.USART_StopBits = USART_StopBits_1;            //ֹͣλ1λ 
  USART_InitStructure.USART_Parity = USART_Parity_No;                //ÎÞУÑéλ 
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;   //ÎÞÓ²¼þÁ÷¿Ø 
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;                    //ÊÕ·¢Ä£Ê½ 
  USART_Init(USARTx, &USART_InitStructure);                            //ÅäÖô®¿Ú²ÎÊýº¯Êý 
  
#if 0     
  /* Enable USARTx Receive and Transmit interrupts */ 
  USART_ITConfig(USARTx, USART_IT_RXNE, ENABLE);          //ʹÄܽÓÊÕÖÐ¶Ï 
  USART_ITConfig(USARTx, USART_IT_TXE, ENABLE);                        //ʹÄÜ·¢ËÍ»º³å¿ÕÖжϠ   
#endif 
     
  /* Enable the USARTx */ 
  USART_Cmd(USARTx, ENABLE);     
} 
 
void dbg_setup_uart(void) 
{ 
    GPIO_InitTypeDef   GPIO_InitStructure;     
     
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);  
 
  /* Ä¬Èϸ´Óù¦ÄÜ */     
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;                      //USART1 TX 
    GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;             //¸´ÓÃÍÆÍìÊä³ö 
  GPIO_Init(GPIOA, &GPIO_InitStructure);         
     
  /* ¸´Óù¦ÄܵÄÊäÈëÒý½Å±ØÐëÅäÖÃΪÊäÈëģʽ£¨¸¡¿Õ/ÉÏÀ­/ÏÂÀ­µÄÒ»ÖÖ£©*/ 
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;                  //USART1 RX 
    GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;  //¸´Óø¡¿ÕÊäÈë 
  GPIO_Init(GPIOA, &GPIO_InitStructure);                        
     
  USART_Config(DBG_UART); 
 
  USART_SendData(DBG_UART, '\n');  
  while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);      
} 
 
int fputc(int ch, FILE *f)  
{  
    if('\n' == ch) 
    { 
       USART_SendData(DBG_UART, (uint8_t) '\r');  
     while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)  ;  
    } 
         
  USART_SendData(DBG_UART, (uint8_t) ch);  
  while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);  
     
  return ch;  
}