stm32 printf输出到USART1

/************************头文件*****************************************/

#include"stm32f10x_lib.h" //包含所有的头文件
#include

/*******************************位绑定定义*****************************************/
//#define GPIOA_ODR_A  (GPIOA_BASE+0x0C)
//#define GPIOA_IDR_A  (GPIOA_BASE+0x08)
//#define GPIOB_ODR_A  (GPIOB_BASE+0x0C)
//#define GPIOB_IDR_A  (GPIOB_BASE+0x08)
//#define GPIOC_ODR_A  (GPIOC_BASE+0x0C)
//#define GPIOC_IDR_A  (GPIOC_BASE+0x08)
//#define GPIOD_ODR_A  (GPIOD_BASE+0x0C)
//#define GPIOD_IDR_A  (GPIOD_BASE+0x08)
//#define GPIOE_ODR_A  (GPIOE_BASE+0x0C)
//#define GPIOE_IDR_A  (GPIOE_BASE+0x08)
//
//#define BitBand(Addr,BitNum)    *((volatile unsigned long *)((Addr&0xF0000000)+0x2000000+((Addr&0xfffff)<<5)+(BitNum<<2)))
//
//#define PAout(n)   BitBand(GPIOA_ODR_A,n)
//#define PAin(n)    BitBand(GPIOA_IDR_A,n)
//#define PBout(n)   BitBand(GPIOB_ODR_A,n)
//#define PBin(n)    BitBand(GPIOB_IDR_A,n)
//#define PCout(n)   BitBand(GPIOC_ODR_A,n)
//#define PCin(n)    BitBand(GPIOC_IDR_A,n)
//#define PDout(n)   BitBand(GPIOD_ODR_A,n)
//#define PDin(n)    BitBand(GPIOD_IDR_A,n)
//#define PEout(n)   BitBand(GPIOE_ODR_A,n)
//#define PEin(n)    BitBand(GPIOE_IDR_A,n)

/*******************************************************************************/
/* 函数名  : RCC_Configuration                                                 */
/* 功能    : 初始化外部时钟                                                    */
/* 输入    : None                                                              */
/* 输出    : None                                                              */
/* 返回    : None                                                              */
/********************************************************************************/
void RCC_Configuration(void)
{
//----------使用外部RC晶振-----------
RCC_DeInit(); //初始化为缺省值
RCC_HSEConfig(RCC_HSE_ON); //使能外部的高速时钟 
while(RCC_GetFlagStatus(RCC_FLAG_HSERDY) == RESET); //等待外部高速时钟使能就绪
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable); //使能预取指缓存
FLASH_SetLatency(FLASH_Latency_2); //设置FLASH存储器2延时周期
RCC_HCLKConfig(RCC_SYSCLK_Div1); //AHB时钟等于系统时钟HCLK = SYSCLK
RCC_PCLK2Config(RCC_HCLK_Div1); //高速AHB时钟（PCLK2）PCLK2 =  HCLK
RCC_PCLK1Config(RCC_HCLK_Div2); //低速AHB时钟（PCLK1）PCLK1 = HCLK/2
RCC_PLLConfig(RCC_PLLSource_HSE_Div1,RCC_PLLMul_9); //PLLCLK = 8MHZ * 9 =72MHZ
RCC_PLLCmd(ENABLE); //Enable PLLCLK
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET); //等待 PLLCLK 准备好
    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); //选择 PLL 为系统时钟
while(RCC_GetSYSCLKSource()!=0x08); //等待系统使用PLL为系统时钟
//---------打开相应外设时钟--------------------
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO | RCC_APB2Periph_USART1,  ENABLE );
}

/*******************************************************************************/
/* 函数名  : GPIO_Configuration                                                */
/* 功能    : 初始化GPIO外设                                                    */
/* 输入    : None                                                              */
/* 输出    : None                                                              */
/* 返回    : None                                                              */
/*******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO;

GPIO.GPIO_Pin =GPIO_Pin_9;
GPIO.GPIO_Speed =GPIO_Speed_50MHz;
GPIO.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA,&GPIO); //端口初始化

GPIO.GPIO_Pin =GPIO_Pin_10;

GPIO.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA,&GPIO); //端口初始化
}

/*******************************************************************************/
/* 函数名  : Delay_MS                                                          */
/* 功能    : 软件延时                                                          */
/* 输入    : 1ms                                                               */
/* 输出    : None                                                              */
/* 返回    : None                                                              */
/*******************************************************************************/
 void Delay_MS(u16 dly)
{
u16 i,j;
for(i=0;i for(j=1000;j>0;j--);
}

void USART_Configuration(void) //初始化USART
{ USART_InitTypeDef USART_InitStructure; //声明参数结构
USART_InitStructure.USART_BaudRate =  9600; //速率9600
USART_InitStructure.USART_WordLength =  USART_WordLength_8b; //数据长度
USART_InitStructure.USART_StopBits =   USART_StopBits_1; //停止位
USART_InitStructure.USART_Parity =  USART_Parity_No; //奇偶校验
USART_InitStructure.USART_HardwareFlowControl =  USART_HardwareFlowControl_None; //硬件流
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //发送接收使能
USART_Init(USART1, &USART_InitStructure); //根据USART_InitStruct中指定的参数初始化外设USART1寄存器

USART_Cmd(USART1,ENABLE);//开启USART外设

}
/*******************************************************************************/
/* 函数名  : fputc                                                              */
/* 功能    : 重定向printf输出到USART1                                           */
/* 输入    : int ch 字符  FILE *f 文件指针                                      */
/* 输出    : ch                                                                 */
/* 返回    : ch                                                                 */
/********************************************************************************/

int fputc(int ch,FILE *f)
{
//ch送给USART1
USART_SendData(USART1, ch);
//等待发送完毕
while(USART_GetFlagStatus(USART1, USART_FLAG_TC)==RESET) { }
//返回ch
return(ch);
}
/*******************************************************************************/
/* 函数名  : main                                                              */
/* 功能    : 主函数                                                            */
/* 输入    : None                                                              */
/* 输出    : None                                                              */
/* 返回    : None                                                              */
/*******************************************************************************/
int  main(void)
{

u8 i=58;
RCC_Configuration();
GPIO_Configuration();
USART_Configuration();

while(1)
{
 
    printf(" qq 2519286938");
printf(" i value is   %d",i);
printf(" i value is   %o",i);
printf(" i value is   %d,  %d",i+i,i*i);
printf(" -----------------------------");

}

}