串口实验超级终端上始终显示不了字符串求指点

tangzhao_01 · 发表于 2013-10-16 19:49:33

#include "stm32f10x.h"

#include "stdio.h"

void RCC_Configuration(void);

void NVIC_Configuration(void);

void GPIO_Configuration(void);

void USART_Configuration(void);

int main(void)

{

unsigned char Buffer[]="work hard";

u16 i;

//SystemInit();

RCC_Configuration();

NVIC_Configuration();

GPIO_Configuration();

USART_Configuration();

printf("\r\n this is a printf demo \r\n");

for(i=0;Buffer!='\0';i++)

{

USART_SendData(USART1,Buffer);

while(USART_GetFlagStatus(USART1, USART_FLAG_TC)==RESET);

}

while(1)

{

}

}

/*******************************************************************************

* Function Name : Delay

* Description : Inserts a delay time.

* Input : nCount: specifies the delay time length.

* Output : None

* Return : None

*******************************************************************************/

void GPIO_Configuration(void)//自己定义的函数

{

GPIO_InitTypeDef GPIO_InitStructure;

GPIO_InitStructure.GPIO_Pin =GPIO_Pin_9;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin =GPIO_Pin_10;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;

// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure);

}

void RCC_Configuration(void)

{

ErrorStatus HSEStartUpStatus;

/* RCC system reset(for debug purpose) */

RCC_DeInit();

/* Enable HSE */

RCC_HSEConfig(RCC_HSE_ON);

/* Wait till HSE is ready */

HSEStartUpStatus = RCC_WaitForHSEStartUp();

if(HSEStartUpStatus == SUCCESS)

{

/* Enable Prefetch Buffer */

FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

/* Flash 2 wait state */

FLASH_SetLatency(FLASH_Latency_2);

/* HCLK = SYSCLK */

RCC_HCLKConfig(RCC_SYSCLK_Div1);



/* PCLK2 = HCLK */

RCC_PCLK2Config(RCC_HCLK_Div1);

/* PCLK1 = HCLK/2 */

RCC_PCLK1Config(RCC_HCLK_Div2);

/* PLLCLK = 8MHz * 9 = 72 MHz */

RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

/* Enable PLL */

RCC_PLLCmd(ENABLE);

/* Wait till PLL is ready */

while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)

{

}

/* Select PLL as system clock source */

RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

/* Wait till PLL is used as system clock source */

while(RCC_GetSYSCLKSource() != 0x08)

{

}

}

RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);

}

void NVIC_Configuration(void)

{

#ifdef VECT_TAB_RAM

/* Set the Vector Table base location at 0x20000000 */

NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);

#else /* VECT_TAB_FLASH */

/* Set the Vector Table base location at 0x08000000 */

NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);

#endif

}

void USART_Configuration(void)

{

USART_InitTypeDef USART_InitStructure;

USART_InitStructure.USART_BaudRate = 115200;

USART_InitStructure.USART_WordLength = USART_WordLength_8b;

USART_InitStructure.USART_StopBits = USART_StopBits_1;//或者设为2位，参看手册

USART_InitStructure.USART_Parity = USART_Parity_No;

USART_InitStructure.USART_HardwareFlowControl =USART_HardwareFlowControl_None;

USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;

// USART_InitStructure.USART_Clock = USART_Clock_Disable;

// USART_InitStructure.USART_CPOL = USART_CPOL_High;

// USART_InitStructure.USART_CPHA = USART_CPHA_1Edge;

// USART_InitStructure.USART_LastBit = USART_LastBit_Enable;

USART_Init(USART1, &USART_InitStructure);

USART_Cmd(USART1, ENABLE);//很容易丢失勿忘

}

int fputc(int ch, FILE *f)

{

/* Write a character to the USART */

USART_SendData(USART1,(u8)ch);

/* Loop until the end of transmission */

while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)

{

}

return ch;

}

用的是3.5的库，感觉程序应该没问题，但是超级终端上显示不了，已经尝试勾选Use MicroLib,依然不行。知道的给指点下吧，纠结好几天了都。