看了原子的串口代码，贡献一下我改进后的串口代码，突破64字节限制！

jiki119 · 发表于 2014-1-28 12:59:36

#ifdef EN_USART1_RX   //??????????????
//????1????·??????ò
//×???,????USARTx->SR??±??????????????í?ó
u8 USART_RX_BUF[64];     //????????,×??ó64??×???.
//????×???
//bit7???????ê??±ê??
//bit6????????0x0d
//bit5~0?????????????§×???????
u8   USART_RX_STA=0;       //????×???±ê?? :?????ó???????????¤??????????

u8 USART_RX_0D0A_STA=0;
///????0d,????0A:??????????????±ê????????????64×???????

// ?????????????????§±?????±??¤??????????????????
void USART1_mem_init(void)
{
USART_RX_STA=0;
USART_RX_0D0A_STA=0;
}
void USART1_IRQHandler(void)
{
u8 res;
if(USART1->SR&(1<<5))//??????????:???????????÷
{
  res=USART1->DR;
  if((USART_RX_0D0A_STA&0x80)==0)//???????ê??
  {
   if(USART_RX_0D0A_STA&0x40)//????????0x0d
   {
    if(res!=0x0a)USART_RX_0D0A_STA=0;//?????í?ó,????????
    else USART_RX_0D0A_STA|=0x80; //?????ê????
   }else //????????0X0D
   {
    if(res==0x0d)USART_RX_0D0A_STA|=0x40;
    else
    {
//     USART_RX_BUF[USART_RX_STA&0X3F]=res;
     USART_RX_BUF[USART_RX_STA]=res;//??????????????????????64×???????????256????
     USART_RX_STA++;
     if(USART_RX_STA>252)
       USART_RX_STA=0;//?????????í?ó,????????????
    }
   }
  }
}
}
#endif
//??????IO ????1
//pclk2CLK2?±??????(Mhz)
//bound:?¨????
//CHECK OK
//091209
void uart_init(u32 pclk2,u32 bound)
{
float temp;
u16 mantissa;
u16 fraction;
temp=(float)(pclk2*1000000)/(bound*16);//????USARTDIV
mantissa=temp;     //??????????·?
fraction=(temp-mantissa)*16; //??????????·?
    mantissa<<=4;
mantissa+=fraction;
RCC->APB2ENR|=1<<2;   //????PORTA???±??
RCC->APB2ENR|=1<<14; //?????????±??
GPIOA->CRH&=0XFFFFF00F;
GPIOA->CRH|=0X000008B0;//IO×????è??

RCC->APB2RSTR|=1<<14;   //????????1
RCC->APB2RSTR&=~(1<<14);//????????
//?¨?????è??
  USART1->BRR=mantissa; // ?¨?????è??
USART1->CR1|=0X200C; //1??????,?????é??.
#ifdef EN_USART1_RX    //??????????????
//????????????
USART1->CR1|=1<<8;    //PE????????
USART1->CR1|=1<<5;    //??????????·???????????
MY_NVIC_Init(3,3,USART1_IRQChannel,2);//×é2??×?????????
#endif
//////////////////////////////////////////////////////////
主程序接受测改进代码：
if(USART_RX_0D0A_STA&0x80)
  {
   len=USART_RX_STA;//?????????????????????¤??
   printf("\r\n?ú·???????????(??%d??×???):\r\n",len);
   for(t=0;t<len;t++)
   {
    USART1->DR=USART_RX_BUF[t];
    while((USART1->SR&0X40)==0);//????·????á??
   }
   printf("\n\n");//????????
//   USART_RX_0D0A_STA=0;
   USART1_mem_init();
  }else

jiki119 · 发表于 2014-1-28 13:00:13

自己顶一下：怎么不认识中文！

jiki119 · 发表于 2014-1-28 13:02:15

试试发帖。重发一下：
////test.c

#include "sys.h"
#include "usart.h"
#include "delay.h"
#include "led.h"
#include "key.h"
//Mini STM32??·?°?·????ú??3
//???????é
//?????×?@ALIENTEK
//????????:www.openedv.com
int main(void)
{
u8 t;
u8 len;
u16 times=0;
Stm32_Clock_Init(9); //?????±???è??
delay_init(72);      //???±??????
uart_init(72,9600); //????????????9600
LED_Init();    //????????LED??????????????
while(1)
{
  if(USART_RX_0D0A_STA&0x80)
  {
   len=USART_RX_STA;//?????????????????????¤??
   printf("\r\n?ú·???????????(??%d??×???):\r\n",len);
   for(t=0;t<len;t++)
   {
    USART1->DR=USART_RX_BUF[t];
    while((USART1->SR&0X40)==0);//????·????á??
   }
   printf("\n\n");//????????
//   USART_RX_0D0A_STA=0;
   USART1_mem_init();
  }else
  {
   times++;
   if(times%5000==0)
   { times=0;

    printf("???°?á??:\r\n\r\n\r\n");
    printf("\r\nMiniSTM32??·?°? ???????é\r\n");
    printf("??????????,???????ü?á??\r\n");
   }
//   if(times%200==0)printf("??????????,???????ü?á??\r\n");
   if(times%30==0)LED0=!LED0;//????LED,?á??????????????.
   delay_ms(10);
  }
}
}

///////////////////

#ifdef EN_USART1_RX   //??????????????
//????1????·??????ò
//×???,????USARTx->SR??±??????????????í?ó
u8 USART_RX_BUF[64];     //????????,×??ó64??×???.
//????×???
//bit7???????ê??±ê??
//bit6????????0x0d
//bit5~0?????????????§×???????
u8   USART_RX_STA=0;       //????×???±ê?? :?????ó???????????¤??????????

u8 USART_RX_0D0A_STA=0;
///????0d,????0A:??????????????±ê????????????64×???????

// ?????????????????§±?????±??¤??????????????????
void USART1_mem_init(void)
{
USART_RX_STA=0;
USART_RX_0D0A_STA=0;
}
void USART1_IRQHandler(void)
{
u8 res;
if(USART1->SR&(1<<5))//??????????:???????????÷
{
  res=USART1->DR;
  if((USART_RX_0D0A_STA&0x80)==0)//???????ê??
  {
   if(USART_RX_0D0A_STA&0x40)//????????0x0d
   {
    if(res!=0x0a)USART_RX_0D0A_STA=0;//?????í?ó,????????
    else USART_RX_0D0A_STA|=0x80; //?????ê????
   }else //????????0X0D
   {
    if(res==0x0d)USART_RX_0D0A_STA|=0x40;
    else
    {
//     USART_RX_BUF[USART_RX_STA&0X3F]=res;
     USART_RX_BUF[USART_RX_STA]=res;//??????????????????????64×???????????256????
     USART_RX_STA++;
     if(USART_RX_STA>252)
       USART_RX_STA=0;//?????????í?ó,????????????
    }
   }
  }
}
}
#endif
//??????IO ????1
//pclk2CLK2?±??????(Mhz)
//bound:?¨????
//CHECK OK
//091209
void uart_init(u32 pclk2,u32 bound)
{
float temp;
u16 mantissa;
u16 fraction;
temp=(float)(pclk2*1000000)/(bound*16);//????USARTDIV
mantissa=temp;     //??????????·?
fraction=(temp-mantissa)*16; //??????????·?
    mantissa<<=4;
mantissa+=fraction;
RCC->APB2ENR|=1<<2;   //????PORTA???±??
RCC->APB2ENR|=1<<14; //?????????±??
GPIOA->CRH&=0XFFFFF00F;
GPIOA->CRH|=0X000008B0;//IO×????è??

RCC->APB2RSTR|=1<<14;   //????????1
RCC->APB2RSTR&=~(1<<14);//????????
//?¨?????è??
  USART1->BRR=mantissa; // ?¨?????è??
USART1->CR1|=0X200C; //1??????,?????é??.
#ifdef EN_USART1_RX    //??????????????
//????????????
USART1->CR1|=1<<8;    //PE????????
USART1->CR1|=1<<5;    //??????????·???????????
MY_NVIC_Init(3,3,USART1_IRQChannel,2);//×é2??×?????????
#endif
}