战舰版的UART2发送数据有错!请大家帮忙看一下!谢谢!

lgh050706 · 发表于 2013-1-15 10:33:24

#include"stm32f10x_map.h"
#include"stm32f10x_nvic.h"
#define BITBAND(addr, bitnum) ((addr & 0xF0000000)+0x2000000+((addr &0xFFFFF)<<5)+(bitnum<<2))
#define MEM_ADDR(addr) *((volatile unsigned long *)(addr))
#define BIT_ADDR(addr, bitnum)   MEM_ADDR(BITBAND(addr, bitnum))
//IO口地址映射
#define GPIOA_ODR_Addr    (GPIOA_BASE+12) //0x4001080C
#define GPIOB_ODR_Addr    (GPIOB_BASE+12) //0x40010C0C
#define GPIOC_ODR_Addr    (GPIOC_BASE+12) //0x4001100C
#define GPIOD_ODR_Addr    (GPIOD_BASE+12) //0x4001140C
#define GPIOE_ODR_Addr    (GPIOE_BASE+12) //0x4001180C
#define GPIOF_ODR_Addr    (GPIOF_BASE+12) //0x40011A0C
#define GPIOG_ODR_Addr    (GPIOG_BASE+12) //0x40011E0C

#define GPIOA_IDR_Addr    (GPIOA_BASE+8) //0x40010808
#define GPIOB_IDR_Addr    (GPIOB_BASE+8) //0x40010C08
#define GPIOC_IDR_Addr    (GPIOC_BASE+8) //0x40011008
#define GPIOD_IDR_Addr    (GPIOD_BASE+8) //0x40011408
#define GPIOE_IDR_Addr    (GPIOE_BASE+8) //0x40011808
#define GPIOF_IDR_Addr    (GPIOF_BASE+8) //0x40011A08
#define GPIOG_IDR_Addr    (GPIOG_BASE+8) //0x40011E08
#define PAout(n)   BIT_ADDR(GPIOA_ODR_Addr,n) //输出
#define PAin(n)    BIT_ADDR(GPIOA_IDR_Addr,n) //输入

#define PBout(n) BIT_ADDR(GPIOB_ODR_Addr,n) //输出
#define PBin(n) BIT_ADDR(GPIOB_IDR_Addr,n) //输入

#define PCout(n) BIT_ADDR(GPIOC_ODR_Addr,n) //输出
#define PCin(n) BIT_ADDR(GPIOC_IDR_Addr,n) //输入

#define PDout(n) BIT_ADDR(GPIOD_ODR_Addr,n) //输出
#define PDin(n) BIT_ADDR(GPIOD_IDR_Addr,n) //输入

#define PEout(n) BIT_ADDR(GPIOE_ODR_Addr,n) //输出
#define PEin(n) BIT_ADDR(GPIOE_IDR_Addr,n) //输入

#define PFout(n) BIT_ADDR(GPIOF_ODR_Addr,n) //输出
#define PFin(n) BIT_ADDR(GPIOF_IDR_Addr,n) //输入

#define PGout(n) BIT_ADDR(GPIOG_ODR_Addr,n) //输出
#define PGin(n) BIT_ADDR(GPIOG_IDR_Addr,n) //输入

#define led1 PEout(5)
#define led0 PBout(5)
void delay(void)
{
unsigned int dlytime;
unsigned int j;
for(dlytime=0;dlytime<300;dlytime++)
{
  j++;
  if(j==10)
  j=0;
}
}
int main(void)
{
//时钟初始化
////////////////////系统时钟/////////////
//PLLXTRPE=0不分频
   RCC->CR|=(1<<16);// 开启外部时钟
     while(!(RCC->CR>>17));//等待外部时钟就绪
FLASH->ACR|=0x32;   //FLASH 2个延时周期,这些位表示SYSCLK(系统时钟)周期与闪存访问时间的比例,我试过如果不等待会造成复位
RCC->CFGR|=(1<<16);//PLLSRC=1
RCC->CFGR|=(0x07<<18);//PLLMUL 9倍频 72M
RCC->CFGR|=(0x02<<0);
//AHB不进行预分频
RCC->CFGR|=(0x04<<11);//ABP2为2分频   36M
RCC->CR|=(1<<24); //开启PLL
while(!((RCC->CR)>>25));//等待PLL锁定

   ////////////////////端口时钟////////////////
    RCC->APB1ENR|=(1<<17);//开启UART2时钟
    RCC->APB2ENR|=(1<<2);//开启PA时钟
    RCC->APB2ENR|=(1<<3);//开启PB时钟
    RCC->APB2ENR|=(1<<6);//开启PE时钟
   ////////////////////端口初始化////////////////////////

GPIOA->CRL&=0XFFFF00FF;//清零重新配置
GPIOA->CRL|=0X00008B00;//串口2配置RXD:设为输入,开启输入或输出上拉, TXD:复用推挽输出,最大的频率为50M
GPIOB->CRL&=0XFF0FFFFF;//清零重新配置
GPIOB->CRL|=0X00300000;//PB.5 LED0 推挽输出
GPIOE->CRL&=0XFF0FFFFF;//清零重新配置
GPIOE->CRL|=0X00300000;//PE.5 LED1推挽输出
////////////////////UART2初始化///////////////////////////
    RCC->APB1RSTR|=1<<17;   //复位串口2
RCC->APB1RSTR&=~(1<<17);//停止复位
USART2->BRR=(234<<4)|6;//波特率为 36M 9600
USART2->CR1|=(1<<13);//使能UART2功能
USART2->CR1|=(1<<3);//发送使能
  while(1)
  {
   led0=!led0;
   led1=!led1;