/****************************************************************************
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* Copyright: (C)2018 Î人ÁèÔÆÎïÍøÖÇ¿ÆʵÑéÊÒ www.iot-yun.com
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* Author: GuoWenxue<guowenxue@gmail.com> QQ: 281143292
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* Description: ·Ü¶·STM32v5¿ª·¢°å ´®¿Ú²Ù×÷º¯Êý½Ó¿Ú,printf¹³×Óº¯Êýfputc
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*
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* ChangeLog:
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* °æ±¾ºÅ ÈÕÆÚ ×÷Õß ËµÃ÷
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* V1.0.0 2018.05.11 GuoWenxue ·¢²¼¸Ã°æ±¾
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****************************************************************************/
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#include <stdio.h>
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#include "stm32f10x_usart.h"
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#include "stm32v5_usart.h"
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static USART_TypeDef* debug_usart=USART1; /* ĬÈÏʹÓô®¿Ú1×÷Ϊµ÷ÊÔ´®¿Ú */
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/* º¯Êý˵Ã÷: ÅäÖô®¿ÚGPIO¿ÚºÍʱÖÓ£»
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* ²ÎÊý˵Ã÷: whichÖ¸¶¨ÒªÅäÖõĴ®¿Ú,ÆäÖµÓ¦¸ÃΪ USART_PORT1 »ò USART_PORT2
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* ·µ»ØÖµ: ÎÞ
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*/
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void init_usart_gpio(int which)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* ʹÄÜUSART1ËùÓÃGPIO¹Ü½ÅʱÖӺʹ®¿Ú¹¦ÄÜʱÖÓ */
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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if( USART_PORT2 == which )
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RCC_APB2PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
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else
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
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if( USART_PORT2 == which )
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; /* USART2 TXD Á¬ PA2 */
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else
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; /* USART1 TXD Á¬ PA9 */
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GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; /* ¸´ÓÃÍÆÍìÊä³ö */
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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if( USART_PORT2 == which )
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; /* USART2 RXD Á¬ PA3 */
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else
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; /* USART1 RXD Á¬ PA10 */
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GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; /* ¸´Óø¡¿ÕÊäÈë */
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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}
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/* º¯Êý˵Ã÷: ÅäÖô®¿ÚµÄ²¨ÌØÂÊ¡¢Êý¾Ýλ¡¢ÆæżУÑéλ¡¢Í£Ö¹Î»¡¢Á÷¿ØµÈ£»
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* ²ÎÊý˵Ã÷: USARTxÖ¸¶¨ÒªÅäÖõĴ®¿Ú,ÆäÖµÓ¦¸ÃΪ USART1 »ò USART2
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* baudrate: ²¨ÌØÂÊ,ÆäֵΪ: 115200,9600,4800,2400,1200....
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* ·µ»ØÖµ: ÎÞ
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*/
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void config_usart(USART_TypeDef* USARTx, uint32_t baudrate)
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{
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USART_InitTypeDef USART_InitStructure;
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/* Configure USART1 */
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USART_InitStructure.USART_BaudRate = baudrate; //²¨ÌØÂÊ
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USART_InitStructure.USART_WordLength = USART_WordLength_8b; //Êý¾Ýλ8λ
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USART_InitStructure.USART_StopBits = USART_StopBits_1; //ֹͣλ1λ
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USART_InitStructure.USART_Parity = USART_Parity_No; //ÎÞУÑéλ
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; //ÎÞÓ²¼þÁ÷¿Ø
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //ÊÕ·¢Ä£Ê½
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USART_Init(USARTx, &USART_InitStructure); //ÅäÖô®¿Ú²ÎÊýº¯Êý
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#if 0
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/* Enable USARTx Receive and Transmit interrupts */
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USART_ITConfig(USARTx, USART_IT_RXNE, ENABLE); //ʹÄܽÓÊÕÖжÏ
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USART_ITConfig(USARTx, USART_IT_TXE, ENABLE); //ʹÄÜ·¢ËÍ»º³å¿ÕÖжÏ
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#endif
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/* Enable the USARTx */
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USART_Cmd(USARTx, ENABLE);
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}
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/* º¯Êý˵Ã÷: ͨ¹ýÖ¸¶¨´®¿Ú·¢ËÍÒ»¸ö×Ö·û
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* ²ÎÊý˵Ã÷: usartÖ¸¶¨Äĸö´®¿Ú, USART1 »ò USART2
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* ch ÊÇÒª·¢Ë͵Ä×Ö·û
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* ·µ»ØÖµ: ÎÞ
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*/
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__inline void usart_putchar(USART_TypeDef* usart, uint8_t ch)
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{
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USART_SendData(usart, ch);
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while (USART_GetFlagStatus(usart, USART_FLAG_TC) == RESET)
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;
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}
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/* º¯Êý˵Ã÷: ³õʼ»¯µ÷ÊÔ´®¿Ú,²¢Ö¸¶¨ÏàÓ¦µÄ´®¿ÚΪµ÷ÊÔ´®¿Ú
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* ²ÎÊý˵Ã÷: which²ÎÊýÖ¸¶¨Ê¹ÓÃÄĸö´®¿Ú, ÆäÖµÓ¦¸ÃÊÇ USART_PORT1 »ò USART_PORT2
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* ·µ»ØÖµ£º ÎÞ
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*/
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void init_dbg_uart(int which, uint32_t baudrate)
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{
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/* ÉèÖõ÷ÊÔ´®¿Ú */
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debug_usart = USART_PORT2==which ? USART2 : USART1;
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/* ³õʼ»¯ USART1µÄGPIO¿Ú */
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init_usart_gpio(which);
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/* ÅäÖô®¿ÚͨÐŵIJ¨ÌØÂÊ¡¢Êý¾Ýλ¡¢ÆæżУÑéλ¡¢Í£Ö¹Î»µÈ */
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config_usart(debug_usart, baudrate);
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/* Êä³öÒ»¸ö»Ø³µ, secureCRTÈí¼þ²Ù×÷´®¿ÚµÄʱºòÐèÒª */
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usart_putchar(debug_usart, '\n');
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}
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/* º¯Êý˵Ã÷: Íùµ÷ÊÔ´®¿Ú·¢ËÍ×Ö·û´®
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* ²ÎÊý˵Ã÷: str Ö¸ÏòÒª·¢Ë͵Ä×Ö·û´®ÄÚÈÝ
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* ·µ»ØÖµ£º ÎÞ
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*/
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void usart_puts(const char *str)
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{
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if( !str )
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return ;
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for( ; *str!='\0'; str++)
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{
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/* windowsÏ»»ÐзûÊÇ\r\n,Èç¹ûÅöµ½\nÔòÔÚÇ°ÃæÌí¼Ó\r */
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if('\n' == *str)
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{
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usart_putchar(debug_usart, '\r');
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}
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usart_putchar(debug_usart, *str);
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}
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}
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/* º¯Êý˵Ã÷: printfº¯ÊýʵÏֵĹ³×Óº¯Êý
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* ²ÎÊý˵Ã÷: ch: Òª·¢Ë͵Ä×Ö·û FILE *f: δʹÓÃ
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* ·µ»ØÖµ£º ·¢Ë͵Ä×Ö·û
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*/
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int fputc(int ch, FILE *f)
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{
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/* windowsÏ»»ÐзûÊÇ\r\n,Èç¹ûÅöµ½\nÔòÔÚÇ°ÃæÌí¼Ó\r */
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if('\n' == ch)
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{
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usart_putchar(debug_usart, '\r');
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}
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usart_putchar(debug_usart, ch);
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return ch;
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}
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