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楼主 |
发表于 2019-6-13 10:29:18
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[mw_shl_code=c,true]#include "sys.h"
#include "usart2.h"
#include "stdarg.h"
#include "stdio.h"
#include "string.h"
#include "timer.h"
//////////////////////////////////////////////////////////////////////////////////
//±¾3ìDòÖ»1©Ñ§Ï°ê1óÃ￡¬Î′¾-×÷ÕßDí¿é￡¬2»μÃóÃóúÆäËüèÎoÎóÃí¾
//ALIENTEK Õ½½￠V3&¾«ó￠ STM32¿a·￠°å
//′®¿ú23õê¼»ˉ
//ÕyμãÔ-×ó@ALIENTEK
//¼¼êõÂÛì3:www.openedv.com
//DT¸ÄèÕÆú:2014/5/14
//°æ±¾￡oV1.0
//°æè¨ËùóD￡¬μá°æ±Ø¾¿¡￡
//Copyright(C) 1ãÖYêDDÇòíμç×ó¿Æ¼¼óDÏT1«Ë¾ 2014-2024
//All rights reserved
//********************************************************************************
//DT¸ÄËμÃ÷
//ÎT
//////////////////////////////////////////////////////////////////////////////////
//′®¿ú½óêÕ»o′æÇø
u8 UART5_RX_BUF[UART5_MAX_RECV_LEN]; //½óêÕ»o3å,×î′óUART5_MAX_RECV_LEN¸ö×Ö½ú.
u8 UART5_TX_BUF[UART5_MAX_SEND_LEN];
//í¨1yÅD¶Ï½óêÕá¬Dø2¸ö×Ö·ûÖ®¼äμÄê±¼ä2î2»′óóú10msà′¾ö¶¨êÇ2»êÇò»′Îá¬DøμÄêy¾Y.
//èç1û2¸ö×Ö·û½óêÕ¼ä¸ô3¬1y10ms,ÔòèÏÎa2»êÇ1′Îá¬Døêy¾Y.ò2¾íêÇ3¬1y10msûóD½óêÕμ½
//èÎoÎêy¾Y,Ôò±íê¾′Ë′νóêÕíê±Ï.
//½óêÕμ½μÄêy¾Y×′ì¬
//[15]:0,ûóD½óêÕμ½êy¾Y;1,½óêÕμ½áËò»Åúêy¾Y.
//[14:0]:½óêÕμ½μÄêy¾Y3¤¶è
vu16 UART5_RX_STA=0;
void UART5_IRQHandler(void)
{
u8 res;
if(UART5->SR&(1<<5))//½óêÕμ½êy¾Y
{
res=UART5->DR;
if((UART5_RX_STA&(1<<15))==0)//½óêÕíêμÄò»Åúêy¾Y,»1ûóD±»′|àí,Ôò2»Ôù½óêÕÆäËûêy¾Y
{
if(UART5_RX_STA<UART5_MAX_RECV_LEN) //»1¿éòÔ½óêÕêy¾Y
{
TIM7->CNT=0; //¼ÆêyÆ÷Çå¿Õ
if(UART5_RX_STA==0) //ê1Äü¶¨ê±Æ÷7μÄÖD¶Ï
{
TIM7->CR1|=1<<0; //ê1Äü¶¨ê±Æ÷7
}
UART5_RX_BUF[UART5_RX_STA++]=res; //¼Ç¼½óêÕμ½μÄÖμ
}else
{
UART5_RX_STA|=1<<15; //Ç¿ÖƱê¼Ç½óêÕíê3é
}
}
}
}
// void UART5_IRQHandler(void)
// {
// u8 Res;
//#if SYSTEM_SUPPORT_OS //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
// OSIntEnter();
//#endif
// if(USART_GetITStatus(UART5, USART_IT_RXNE) != RESET) //½óêÕÖD¶Ï(½óêÕμ½μÄêy¾Y±ØDëêÇ0x0d 0x0a½áÎ2)
// {
// Res =USART_ReceiveData(UART5); //¶á衽óêÕμ½μÄêy¾Y
//
// if((UART5_RX_STA&0x8000)==0)//½óêÕÎ′íê3é
// {
// if(UART5_RX_STA&0x4000)//½óêÕμ½áË0x0d
// {
// if(Res!=0x0a)UART5_RX_STA=0;//½óêÕ′íÎó,ÖØD¿aê¼
// else UART5_RX_STA|=0x8000; //½óêÕíê3éáË
// }
// else //»1ûêÕμ½0X0D
// {
// if(Res==0x0d)UART5_RX_STA|=0x4000;
// else
// {
// UART5_RX_BUF[UART5_RX_STA&0X3FFF]=Res ;
// UART5_RX_STA++;
// if(UART5_RX_STA>(UART5_MAX_RECV_LEN-1))UART5_RX_STA=0;//½óêÕêy¾Y′íÎó,ÖØD¿aê¼½óêÕ
// }
// }
// }
// }
//#if SYSTEM_SUPPORT_OS //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
// OSIntExit();
//#endif
//}
//3õê¼»ˉIO ′®¿ú2
//pclk1 CLK1ê±ÖóÆμÂê(Mhz)
//bound:2¨ìØÂê
void UART5_init(u32 pclk1,u32 bound)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
float temp;
u16 mantissa;
u16 fraction;
temp=(float)(pclk1*1000000)/(bound*16);//μÃμ½USARTDIV
mantissa=temp; //μÃμ½Õûêy2¿·Ö
fraction=(temp-mantissa)*16; //μÃμ½D¡êy2¿·Ö
mantissa<<=4;
mantissa+=fraction;
// RCC->APB2ENR|=1<<2; //ê1ÄüPORTA¿úê±Öó ¸Ä3éê1ÄüDoíC¿úê±Öó¶¼êÇ2
// RCC->APB1ENR|=1<<17; //ê1Äü′®¿ú2ê±Öó ¸Äê1Äü′®¿ú5ê±Öó1
// GPIOA->CRL&=0XFFFF00FF; //PA2\PA3IO×′ì¬éèÖÃ
// GPIOA->CRL|=0X00008B00; //IO×′ì¬éèÖÃ
//
// RCC->APB1RSTR|=1<<17; //¸′λ′®¿ú2
// RCC->APB1RSTR&=~(1<<17); //í￡Ö1¸′λ
// //2¨ìØÂêéèÖÃ
//// UART5->BRR=(pclk1*1000000)/(bound);// 2¨ìØÂêéèÖÃ
// UART5->BRR=mantissa;
// UART5->CR1|=0X200C; //1λí￡Ö1,ÎTD￡Ñéλ.
// //ê1Äü½óêÕÖD¶Ï
// UART5->CR1|=1<<5; //½óêÕ»o3åÇø·Ç¿ÕÖD¶Ïê1Äü
// MY_NVIC_Init(0,1,UART5_IRQn,2);//×é2
// TIM7_Int_Init(99,7199); //10msÖD¶Ï
// TIM7->CR1&=~(1<<0); //1رն¨ê±Æ÷7
// UART5_RX_STA=0; //Çåáã
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOC, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //PD.2 RXD
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //¸′óÃíÆíìêä3ö
GPIO_Init(GPIOD, &GPIO_InitStructure);//3õê¼»ˉGPIOD.2
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; //PC.12
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //¸′óÃíÆíìêä3ö
GPIO_Init(GPIOC, &GPIO_InitStructure);//3õê¼»ˉGPIOC.12
MY_NVIC_Init(0,1,UART5_IRQn,2);//×é2 ÖD¶ÏóÅÏ輶
USART_InitStructure.USART_BaudRate = mantissa;//′®¿ú2¨ìØÂê
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//×Ö3¤Îa8λêy¾Y¸ñê½
USART_InitStructure.USART_StopBits = USART_StopBits_1;//ò»¸öí￡Ö1λ
USART_InitStructure.USART_Parity = USART_Parity_No;//ÎTÆæżD￡Ñéλ
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//ÎTó2¼têy¾Yá÷¿ØÖÆ
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //êÕ·￠Ä￡ê½
USART_Init(UART5, &USART_InitStructure); //3õê¼»ˉ′®¿ú1
USART_ITConfig(UART5, USART_IT_RXNE, ENABLE);//¿aÆô′®¿ú½óêüÖD¶Ï
USART_Cmd(UART5, ENABLE); //ê1Äü′®¿ú1
UART5_RX_STA=0;
// TIM7_Int_Init(99,7199); //10msÖD¶Ï
// TIM7->CR1&=~(1<<0); //1رն¨ê±Æ÷7
// UART5_RX_STA=0; //Çåáã
}
//void uart5_init(u32 bound){
// //GPIO¶Ë¿úéèÖÃ
// GPIO_InitTypeDef GPIO_InitStructure;
// USART_InitTypeDef USART_InitStructure;
// NVIC_InitTypeDef NVIC_InitStructure;
//
//// RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA, ENABLE); //ê1ÄüUSART1￡¬GPIOAê±Öó
////
//// //USART1_TX GPIOA.9
//// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //PA.9
//// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //¸′óÃíÆíìêä3ö
//// GPIO_Init(GPIOA, &GPIO_InitStructure);//3õê¼»ˉGPIOA.9
////
//// //USART1_RX GPIOA.103õê¼»ˉ
//// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;//PA10
//// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//¸¡¿Õêäèë
//// GPIO_Init(GPIOA, &GPIO_InitStructure);//3õê¼»ˉGPIOA.10
// RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOC, ENABLE);
// RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5,ENABLE);
//
// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //PD.2 RXD
// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //¸′óÃíÆíìêä3ö
// GPIO_Init(GPIOD, &GPIO_InitStructure);//3õê¼»ˉGPIOD.2
//
// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; //PC.12
// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //¸′óÃíÆíìêä3ö
// GPIO_Init(GPIOC, &GPIO_InitStructure);//3õê¼»ˉGPIOC.12
//
// //Usart1 NVIC ÅäÖÃ
// NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
// NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//ÇàÕ¼óÅÏ輶3
// NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //×óóÅÏ輶3
// NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQí¨μàê1Äü
// NVIC_Init(&NVIC_InitStructure); //¸ù¾YÖ¸¶¨μÄ2Îêy3õê¼»ˉVIC¼Ä′æÆ÷
//
// //USART 3õê¼»ˉéèÖÃ
// USART_InitStructure.USART_BaudRate = bound;//′®¿ú2¨ìØÂê
// USART_InitStructure.USART_WordLength = USART_WordLength_8b;//×Ö3¤Îa8λêy¾Y¸ñê½
// USART_InitStructure.USART_StopBits = USART_StopBits_1;//ò»¸öí￡Ö1λ
// USART_InitStructure.USART_Parity = USART_Parity_No;//ÎTÆæżD￡Ñéλ
// 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_ITConfig(USART1, USART_IT_RXNE, ENABLE);//¿aÆô′®¿ú½óêüÖD¶Ï
//// USART_Cmd(USART1, ENABLE); //ê1Äü′®¿ú1
// USART_Init(UART5, &USART_InitStructure); //3õê¼»ˉ′®¿ú1
// USART_ITConfig(UART5, USART_IT_RXNE, ENABLE);//¿aÆô′®¿ú½óêüÖD¶Ï
// USART_Cmd(UART5, ENABLE);
//}
//′®¿ú2,printf oˉêy
//è·±￡ò»′η￠Ëíêy¾Y2»3¬1yUART5_MAX_SEND_LEN×Ö½ú
void u2_printf(char* fmt,...)
{
u16 i,j;
va_list ap;
va_start(ap,fmt);
vsprintf((char*)UART5_TX_BUF,fmt,ap);
va_end(ap);
i=strlen((const char*)UART5_TX_BUF); //′Ë′η￠Ëíêy¾YμÄ3¤¶è
for(j=0;j<i;j++) //Ñ-»··￠Ëíêy¾Y
{
while((UART5->SR&0X40)==0); //Ñ-»··￠Ëí,Ö±μ½·￠Ëííê±Ï
UART5->DR=UART5_TX_BUF[j];
}
}
[/mw_shl_code] |
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发表于 2019-6-13 10:28:36
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