stm32F407ZET6开发板用的官方例子串口1乱码？

刚开始的时候，以为是晶振没弄清楚，检查了板子上是H8.000k5，那个官方文件HSE值也是8M没有问题的，，检查MDK的设置，也是8M，，，波特率程序初始化的是115200，调试助手也是115200呢，测试程序的时候单独发送一个字节数据调试助手也是受到不一样的值如0x01);助手收到的是F0或者F8。。。。折磨了很久，求助大神呢
用官方探索者stm32F407ZET6开发板的串口实验也乱码
这是串口相关配置及中断程序
#include "sys.h"
#include "usart.h"
//////////////////////////////////////////////////////////////////////////////////  
//Èç¹ûʹÓÃucos,Ôò°üÀ¨ÏÂÃæµÄÍ·Îļþ¼´¿É.
#if SYSTEM_SUPPORT_OS
#include "includes.h" //ucos ʹÓà  
#endif
//////////////////////////////////////////////////////////////////////////////////  
//±¾³ÌÐòÖ»¹©Ñ§Ï°Ê¹Óã¬Î´¾­×÷ÕßÐí¿É£¬²»µÃÓÃÓÚÆäËüÈκÎÓÃ;
//ALIENTEK STM32F4̽Ë÷Õß¿ª·¢°å
//´®¿Ú1³õʼ»¯   
//ÕýµãÔ­×Ó@ALIENTEK
//¼¼ÊõÂÛ̳:www.openedv.com
//ÐÞ¸ÄÈÕÆÚ:2014/6/10
//°æ±¾£ºV1.5
//°æȨËùÓУ¬µÁ°æ±Ø¾¿¡£
//Copyright(C) ¹ãÖÝÊÐÐÇÒíµç×ӿƼ¼ÓÐÏÞ¹«Ë¾ 2009-2019
//All rights reserved
//********************************************************************************
//V1.3ÐÞ¸Ä˵Ã÷ 
//Ö§³ÖÊÊÓ¦²»Í¬ÆµÂÊϵĴ®¿Ú²¨ÌØÂÊÉèÖÃ.
//¼ÓÈëÁ˶ÔprintfµÄÖ§³Ö
//Ôö¼ÓÁË´®¿Ú½ÓÊÕÃüÁÄÜ.
//ÐÞÕýÁËprintfµÚÒ»¸ö×Ö·û¶ªÊ§µÄbug
//V1.4ÐÞ¸Ä˵Ã÷
//1,Ð޸Ĵ®¿Ú³õʼ»¯IOµÄbug
//2,ÐÞ¸ÄÁËUSART_RX_STA,ʹµÃ´®¿Ú×î´ó½ÓÊÕ×Ö½ÚÊýΪ2µÄ14´Î·½
//3,Ôö¼ÓÁËUSART_REC_LEN,ÓÃÓÚ¶¨Òå´®¿Ú×î´óÔÊÐí½ÓÊÕµÄ×Ö½ÚÊý(²»´óÓÚ2µÄ14´Î·½)
//4,ÐÞ¸ÄÁËEN_USART1_RXµÄʹÄÜ·½Ê½
//V1.5ÐÞ¸Ä˵Ã÷
//1,Ôö¼ÓÁ˶ÔUCOSIIµÄÖ§³Ö
//////////////////////////////////////////////////////////////////////////////////  
 


//////////////////////////////////////////////////////////////////
//¼ÓÈëÒÔÏ´úÂë,Ö§³Öprintfº¯Êý,¶ø²»ÐèҪѡÔñuse MicroLIB  
#if 1
#pragma import(__use_no_semihosting)             
//±ê×¼¿âÐèÒªµÄÖ§³Öº¯Êý                 
struct __FILE 
{ 
int handle; 
}; 


FILE __stdout;       
//¶¨Òå_sys_exit()ÒÔ±ÜÃâʹÓðëÖ÷»úģʽ    
_sys_exit(int x) 
{ 
x = x; 
} 
//Öض¨Òåfputcº¯Êý 
int fputc(int ch, FILE *f)
{
while((USART1->SR&0X40)==0);//Ñ­»··¢ËÍ,Ö±µ½·¢ËÍÍê±Ï   
USART1->DR = (u8) ch;      
return ch;
}
#endif
 
#if EN_USART1_RX   //Èç¹ûʹÄÜÁ˽ÓÊÕ
//´®¿Ú1ÖжϷþÎñ³ÌÐò
//×¢Òâ,¶ÁÈ¡USARTx->SRÄܱÜÃâĪÃûÆäÃîµÄ´íÎó  
u8 USART_RX_BUF[USART_REC_LEN];     //½ÓÊÕ»º³å,×î´óUSART_REC_LEN¸ö×Ö½Ú.
//½ÓÊÕ״̬
//bit15£¬ ½ÓÊÕÍê³É±êÖ¾
//bit14£¬ ½ÓÊÕµ½0x0d
//bit13~0£¬ ½ÓÊÕµ½µÄÓÐЧ×Ö½ÚÊýÄ¿
u16 USART_RX_STA=0;       //½ÓÊÕ״̬±ê¼Ç


//³õʼ»¯IO ´®¿Ú1 
//bound:²¨ÌØÂÊ
void uart_init(u32 bound){
   //GPIO¶Ë¿ÚÉèÖÃ
  GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA,ENABLE); //ʹÄÜGPIOAʱÖÓ
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);//ʹÄÜUSART1ʱÖÓ
 
//´®¿Ú1¶ÔÓ¦Òý½Å¸´ÓÃÓ³Éä
GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1); //GPIOA9¸´ÓÃΪUSART1
GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1); //GPIOA10¸´ÓÃΪUSART1

//USART1¶Ë¿ÚÅäÖÃ
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10; //GPIOA9ÓëGPIOA10
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//¸´Óù¦ÄÜ
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //ËÙ¶È50MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //ÍÆÍ츴ÓÃÊä³ö
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //ÉÏÀ­
GPIO_Init(GPIOA,&GPIO_InitStructure); //³õʼ»¯PA9£¬PA10


   //USART1 ³õʼ»¯ÉèÖÃ
USART_InitStructure.USART_BaudRate = bound;//²¨ÌØÂÊÉèÖÃ
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//×Ö³¤Îª8λÊý¾Ý¸ñʽ
USART_InitStructure.USART_StopBits = USART_StopBits_1;//Ò»¸öֹͣλ
USART_InitStructure.USART_Parity = USART_Parity_No;//ÎÞÆæżУÑéλ
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//ÎÞÓ²¼þÊý¾ÝÁ÷¿ØÖÆ
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //ÊÕ·¢Ä£Ê½
  USART_Init(USART1, &USART_InitStructure); //³õʼ»¯´®¿Ú1

  USART_Cmd(USART1, ENABLE);  //ʹÄÜ´®¿Ú1 

//USART_ClearFlag(USART1, USART_FLAG_TC);

#if EN_USART1_RX
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//¿ªÆôÏà¹ØÖжÏ


//Usart1 NVIC ÅäÖÃ
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;//´®¿Ú1ÖжÏͨµÀ
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//ÇÀÕ¼ÓÅÏȼ¶3
NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; //×ÓÓÅÏȼ¶3
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQͨµÀʹÄÜ
NVIC_Init(&NVIC_InitStructure); //¸ù¾ÝÖ¸¶¨µÄ²ÎÊý³õʼ»¯VIC¼Ä´æÆ÷¡¢


#endif

}




void USART1_IRQHandler(void)                 //´®¿Ú1ÖжϷþÎñ³ÌÐò
{
u8 Res;
#if SYSTEM_SUPPORT_OS //Èç¹ûSYSTEM_SUPPORT_OSΪÕ棬ÔòÐèÒªÖ§³ÖOS.
OSIntEnter();    
#endif
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)  //½ÓÊÕÖжÏ(½ÓÊÕµ½µÄÊý¾Ý±ØÐëÊÇ0x0d 0x0a½áβ)
{
Res =USART_ReceiveData(USART1);//(USART1->DR); //¶ÁÈ¡½ÓÊÕµ½µÄÊý¾Ý

if((USART_RX_STA&0x8000)==0)//½ÓÊÕδÍê³É
{
if(USART_RX_STA&0x4000)//½ÓÊÕµ½ÁË0x0d
{
if(Res!=0x0a)USART_RX_STA=0;//½ÓÊÕ´íÎó,ÖØпªÊ¼
else USART_RX_STA|=0x8000; //½ÓÊÕÍê³ÉÁË 
}
else //»¹Ã»ÊÕµ½0X0D
{
if(Res==0x0d)USART_RX_STA|=0x4000;
else
{
USART_RX_BUF[USART_RX_STA&0X3FFF]=Res ;
USART_RX_STA++;
if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0;//½ÓÊÕÊý¾Ý´íÎó,ÖØпªÊ¼½ÓÊÕ  
}  
}
}    
  } 
#if SYSTEM_SUPPORT_OS //Èç¹ûSYSTEM_SUPPORT_OSΪÕ棬ÔòÐèÒªÖ§³ÖOS.
OSIntExit();    
#endif
} 
#endif


这是主函数


int main(void)
{ 
 
u8 t;
u8 len;
u16 times=0;  
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//ÉèÖÃϵͳÖжÏÓÅÏȼ¶·Ö×é2
delay_init(168); //ÑÓʱ³õʼ»¯ 
uart_init(115200); //´®¿Ú³õʼ»¯²¨ÌØÂÊΪ115200
LED_Init();   //³õʼ»¯ÓëLEDÁ¬½ÓµÄÓ²¼þ½Ó¿Ú  
while(1)
{
if(USART_RX_STA&0x8000)
{   
len=USART_RX_STA&0x3fff;//µÃµ½´Ë´Î½ÓÊÕµ½µÄÊý¾Ý³¤¶È
printf("\r\nÄú·¢Ë͵ÄÏûϢΪ:\r\n");
for(t=0;t {
USART_SendData(USART1, USART_RX_BUF[t]);         //Ïò´®¿Ú1·¢ËÍÊý¾Ý
while(USART_GetFlagStatus(USART1,USART_FLAG_TC)!=SET);//µÈ´ý·¢ËͽáÊø
}
printf("\r\n\r\n");//²åÈë»»ÐÐ
USART_RX_STA=0;
}else
{
times++;
if(times%5000==0)
{
printf("\r\nALIENTEK ̽Ë÷ÕßSTM32F407¿ª·¢°å ´®¿ÚʵÑé\r\n");
printf("ÕýµãÔ­×Ó@ALIENTEK\r\n\r\n\r\n");
}
if(times%200==0)printf("ÇëÊäÈëÊý¾Ý,ÒԻسµ¼ü½áÊø\r\n");  
if(times%30==0)LED0=!LED0;//ÉÁ˸LED,ÌáʾϵͳÕýÔÚÔËÐÐ.
delay_ms(10);   
}
}
}