stm32f407 UART5 标准例程

/*************************************************************/ /* this programme for UART3 Communication */ /* Company: New Future */ /* Programmer: windy */ /* phone: 13891912727 weixin same name */ /* Email: cjfwindy@163.com */ /* if you have any question, please tell me */ /* Time: 2021-04-08 13:36 */ /* Copyright(C) 2021 New Future All rights reserved */ /*************************************************************/ #include "global.h" //================================================================================= unsigned char REC5_Data[50],REC5_Count=0,Buffer5[50], Data5Length; TYPE_BYTE_IO _RAMC; char* gpUart5TxAddress; /* uart transmit buffer address */ int gUart5TxCnt; /* uart transmit data number */ //================================================================================= /*----函数：向PC传输一行字符串----*/ void UART5_print(char * head) { BYTE i,j; j = strlen(head); for (i=0; i<j; i++) { UART5_Send(head[i]); } } //----------------------------------------------------------------- void Uart5_BSend(char * head, int nub) { int i; for (i=0; i<nub; i++) { UART5_Send(head[i]); } //UART5_Send(0x0D); //UART5_Send(0x0A); } //----------------------------------------------------------------- /*----函数：向串口发送一个字节的数据----*/ void UART5_Send(BYTE a) { UART5_CheckOERR(); while (!(UART5->SR & USART_SR_TXE)); UART5->DR = a; //NOP(); //while ((UART5->SR & USART_SR_TXE) != 1); //while ((UART5->SR & USART_SR_TC) != 1); while ((UART5->SR & USART_SR_TC) == 0); } //----------------------------------------------------------------- void REC5_SER(void) { if (b5Timeover) { b5Timeover = 0; F_UART5_First = 1; } if (!F_UART5_REC) return; F_UART5_REC = 0; REC5_Count = 0; // HFORWARD 5A A5 06 83 00 00 01 00 F1 if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xF1==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_HFORWARD; } // HBCAKWORD 5A A5 06 83 00 00 01 00 F2 if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xF2==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_HBACKWARD; } // HSTOP 5A A5 06 83 00 00 01 00 F3 if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xF3==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_HSTOP; } // VFORWARD 5A A5 06 83 00 00 01 00 F4 if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xF4==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_VFORWARD; } // VBCAKWORD 5A A5 06 83 00 00 01 00 F5 if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xF5==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_VBACKWARD; } // VSTOP 5A A5 06 83 00 00 01 00 F6 if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xF6==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_VSTOP; } // SAMPLE1 5A A5 06 83 00 00 01 00 F7 if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xF7==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_SAMPLE1; } // SAMPLE2 5A A5 06 83 00 00 01 00 F8 if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xF8==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_SAMPLE2; } // SAMPLE3 5A A5 06 83 00 00 01 00 F9 if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xF9==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_SAMPLE3; } // SAMPLE4 5A A5 06 83 00 00 01 00 FA if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xFA==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_SAMPLE4; } // RETURN 5A A5 06 83 00 00 01 00 FB if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xFB==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_RETURN; } // RETURN 5A A5 06 83 00 00 01 00 FC if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x00==REC5_Data[4]) && (0x00==REC5_Data[5]) && (0x00==REC5_Data[7]) && (0xFC==REC5_Data[8])) { Key_Use = 1; Key_Value = KEY_REMOTE; } // HVELOCITY 5A A5 06 83 03 40 01 00 0C if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x03==REC5_Data[4]) && (0x40==REC5_Data[5])) { Key_Use = 1; Key_Value = KEY_HVELOCITY; HVELOCITYDATA = REC5_Data[7]<<8; HVELOCITYDATA = HVELOCITYDATA + REC5_Data[8]; } // VVELOCITY 5A A5 06 83 03 50 01 00 0C if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x03==REC5_Data[4]) && (0x50==REC5_Data[5])) { Key_Use = 1; Key_Value = KEY_VVELOCITY; VVELOCITYDATA = REC5_Data[7]<<8; VVELOCITYDATA = VVELOCITYDATA + REC5_Data[8]; } // HSTARTER 5A A5 06 83 03 60 01 00 0C if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x03==REC5_Data[4]) && (0x60==REC5_Data[5])) { Key_Use = 1; Key_Value = KEY_HSTARTER; HSARTERDATA = REC5_Data[7]<<8; HSARTERDATA = HSARTERDATA + REC5_Data[8]; } // VSTARTER 5A A5 06 83 03 70 01 00 0C if((0x06==REC5_Data[2]) && ( 0x83==REC5_Data[3]) && (0x03==REC5_Data[4]) && (0x70==REC5_Data[5])) { Key_Use = 1; Key_Value = KEY_VSTARTER; VSARTERDATA = REC5_Data[7]<<8; VSARTERDATA = VSARTERDATA + REC5_Data[8]; } } //----------------------------------------------------------------- void UART5TX_SER(void) { if (0 == gUart5TxCnt) return; if (!(UART5->SR & USART_SR_TC)) return; UART5_CheckOERR(); if( gUart5TxCnt > 0 ) { UART5->DR = *gpUart5TxAddress; gpUart5TxAddress++; gUart5TxCnt--; if (0 == gUart5TxCnt) { while ((UART5->SR & USART_SR_TC) != 1); //PIN_4852RE = 0; // 接收状态 } } } //================================================================================= // 初始化IO 串口1 // pclk2:PCLK2时钟频率(Mhz) // bound:波特率 void uart5_init(u32 pclk1,u32 bound) { float temp; u16 mantissa; u16 fraction; temp = (float)(pclk1*1000000)/(bound*16); // 得到USARTDIV mantissa = temp; // 得到整数部分 fraction = (temp-mantissa)*16; // 得到小数部分 mantissa <<= 4; mantissa += fraction; RCC->AHB1ENR |= 1<<2; // 使能PORTC时钟 RCC->AHB1ENR |= 1<<3; // 使能PORTD时钟 RCC->APB1ENR |= 1<<20; // 使能串口时钟 GPIO_Set(GPIOC,PIN12,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_50M,GPIO_PUPD_PU);//PC12,复用功能,上拉输出 GPIO_Set(GPIOD,PIN2,GPIO_MODE_AF,GPIO_OTYPE_PP,GPIO_SPEED_50M,GPIO_PUPD_PU);//PD2,复用功能,上拉输出 GPIO_AF_Set(GPIOC,12,8); //PC12,AF8 GPIO_AF_Set(GPIOD,2,8); RCC->APB1RSTR |= 1<<20; // 复位串口1 RCC->APB1RSTR &= ~(1<<20); // 停止复位 //波特率设置 UART5->BRR = mantissa; // 波特率设置 UART5->CR1 |= 0X200C; // 1位停止,无校验位. //使�