一直有错，麻烦看一下

JRoger · 发表于 2017-10-19 20:00:11

本帖最后由 JRoger 于 2017-10-23 16:24 编辑

#include "sys.h"
#include "usart.h"
//////////////////////////////////////////////////////////////////////////////////
//èç1ûê1óÃucos,Ôò°üà¨ÏÂÃæμÄí·ÎÄ¼t¼′¿é.
#if SYSTEM_SUPPORT_OS
#include "includes.h"                                     //ucos ê1óÃ
#endif
//////////////////////////////////////////////////////////////////////////////////
//±¾3ìDòÖ»1©Ñ§Ï°ê1óÃ￡¬Î′¾-×÷ÕßDí¿é￡¬2»μÃóÃóúÆäËüèÎoÎóÃí¾
//ALIENTEK STM32F4ì½Ë÷Õß¿a·￠°å
//′®¿ú13õê¼»ˉ
//ÕyμãÔ-×ó@ALIENTEK
//¼¼êõÂÛì3:www.openedv.com
//DT¸ÄèÕÆú:2014/6/10
//°æ±¾￡oV1.5
//°æè¨ËùóD￡¬μá°æ±Ø¾¿¡￡
//Copyright(C) 1ãÖYêDDÇòíμç×ó¿Æ¼¼óDÏT1«Ë¾ 2009-2019
//All rights reserved
//********************************************************************************
//V1.3DT¸ÄËμÃ÷
//Ö§3Öêêó|2»í¬ÆμÂêÏÂμÄ′®¿ú2¨ìØÂêéèÖÃ.
//¼óèëáË¶ÔprintfμÄÖ§3Ö
//Ôö¼óáË′®¿ú½óêÕÃüáî1|Äü.
//DTÕyáËprintfμúò»¸ö×Ö·û¶aê§μÄbug
//V1.4DT¸ÄËμÃ÷
//1,DT¸Ä′®¿ú3õê¼»ˉIOμÄbug
//2,DT¸ÄáËUSART_RX_STA,ê1μÃ′®¿ú×î′ó½óêÕ×Ö½úêyÎa2μÄ14′Î·½
//3,Ôö¼óáËUSART_REC_LEN,óÃóú¶¨òå′®¿ú×î′óÔêDí½óêÕμÄ×Ö½úêy(2»′óóú2μÄ14′Î·½)
//4,DT¸ÄáËEN_USART1_RXμÄê1Äü·½ê½
//V1.5DT¸ÄËμÃ÷
//1,Ôö¼óáË¶ÔUCOSIIμÄÖ§3Ö
//////////////////////////////////////////////////////////////////////////////////

//////////////////////////////////////////////////////////////////
//¼óèëòÔÏÂ′úÂë,Ö§3Öprintfoˉêy,¶ø2»DèòaÑ¡Ôñuse MicroLIB
#if 1
#pragma import(__use_no_semihosting)
//±ê×¼¿aDèòaμÄÖ§3Öoˉêy
struct __FILE
{
      int handle;
};

FILE __stdout;
//¶¨òå_sys_exit()òÔ±üÃaê1óÃ°ëÖ÷»úÄ￡ê½
_sys_exit(int x)
{
      x = x;
}
//ÖØ¶¨òåfputcoˉêy
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 //èç1ûê1ÄüáË½óêÕ
//′®¿ú1ÖD¶Ï·tÎñ3ìDò
//×￠òa,¶áè¡USARTx->SRÄü±üÃaÄaÃûÆäÃîμÄ′íÎó
u8 USART_RX_BUF[USART_REC_LEN];    //½óêÕ»o3å,×î′óUSART_REC_LEN¸ö×Ö½ú.
//½óêÕ×′ì¬
//bit15￡¬       ½óêÕíê3é±êÖ¾
//bit14￡¬       ½óêÕμ½0x0d
//bit13~0￡¬       ½óêÕμ½μÄóDD§×Ö½úêyÄ¿
u16 USART_RX_STA=0;    //½óêÕ×′ì¬±ê¼Ç

//3õê¼»ˉIO ′®¿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); //ê1ÄüGPIOAê±Öó
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);//ê1ÄüUSART1ê±Öó

      //′®¿ú1¶Ôó|òy½Å¸′óÃó3éä
      GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_USART1); //GPIOA9¸′óÃÎaUSART1
      GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_USART1); //GPIOA10¸′óÃÎaUSART1

      //USART1¶Ë¿úÅäÖÃ
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10; //GPIOA9óëGPIOA10
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//¸′óÃ1|Äü
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;       //Ëù¶è50MHz
      GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //íÆíì¸′óÃêä3ö
      GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //éÏà-
      GPIO_Init(GPIOA,&GPIO_InitStructure); //3õê¼»ˉPA9￡&#172

A10

//USART1 3õê¼»ˉéèÖÃ
      USART_InitStructure.USART_BaudRate = bound;//2¨ìØÂêéèÖÃ
      USART_InitStructure.USART_WordLength = USART_WordLength_8b;//×Ö3¤Îa8Î»êy¾Y¸ñê½
      USART_InitStructure.USART_StopBits = USART_StopBits_1;//ò»¸öí￡Ö1Î»
      USART_InitStructure.USART_Parity = USART_Parity_No;//ÎTÆæÅ¼D￡ÑéÎ»
      USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//ÎTó2¼têy¾Yá÷¿ØÖÆ
      USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;       //êÕ·￠Ä￡ê½
  USART_Init(USART1, &USART_InitStructure); //3õê¼»ˉ′®¿ú1

  USART_Cmd(USART1, ENABLE);  //ê1Äü′®¿ú1

      //USART_ClearFlag(USART1, USART_FLAG_TC);

#if EN_USART1_RX
      USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//¿aÆôÏà1ØÖD¶Ï

      //Usart1 NVIC ÅäÖÃ
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;//′®¿ú1ÖD¶Ïí¨μà
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//ÇàÕ¼óÅÏè¼¶3
      NVIC_InitStructure.NVIC_IRQChannelSubPriority =3;             //×óóÅÏè¼¶3
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                      //IRQí¨μàê1Äü
      NVIC_Init(&NVIC_InitStructure);       //¸ù¾YÖ¸¶¨μÄ2Îêy3õê¼»ˉVIC¼Ä′æÆ÷¡￠

#endif

}

void USART1_IRQHandler(void)                      //′®¿ú1ÖD¶Ï·tÎñ3ìDò
{
      u8 Res;
#if SYSTEM_SUPPORT_OS                //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
      OSIntEnter();
#endif
      if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)  //½óêÕÖD¶Ï(½óêÕμ½μÄêy¾Y±ØDëêÇ0x0d 0x0a½áÎ2)
      {
            Res =USART_ReceiveData(USART1);//(USART1->DR);       //¶áè¡½óêÕμ½μÄêy¾Y

            if((USART_RX_STA&0x8000)==0)//½óêÕÎ′íê3é
            {
                     if(USART_RX_STA&0x4000)//½óêÕμ½áË0x0d
                     {
                              if(Res!=0x0a)USART_RX_STA=0;//½óêÕ′íÎó,ÖØDÂ¿aê¼
                              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;//½óêÕêy¾Y′íÎó,ÖØDÂ¿aê¼½óêÕ
                              }
                     }
            }
  }
#if SYSTEM_SUPPORT_OS       //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
      OSIntExit();
#endif
}
#endif