53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
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#include "printf.h"
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int fputc(int ch,FILE *p) //<2F><><EFBFBD><EFBFBD>Ĭ<EFBFBD>ϵģ<CFB5><C4A3><EFBFBD>ʹ<EFBFBD><CAB9>printf<74><66><EFBFBD><EFBFBD>ʱ<EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD>
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{
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USART_SendData(USART1,(u8)ch);
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while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
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return ch;
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}
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/*******************************************************************************
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> : printf_init
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* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> : IO<EFBFBD>˿ڼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD>ʱ<EFBFBD>ӳ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> : <EFBFBD><EFBFBD>
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*******************************************************************************/
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void printf_init() //printf<74><66>ʼ<EFBFBD><CABC>
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{
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GPIO_InitTypeDef GPIO_InitStructure; //<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ṹ<EFBFBD><E1B9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>GPIO
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NVIC_InitTypeDef NVIC_InitStructure; //<2F>жϽṹ<CFBD>嶨<EFBFBD><E5B6A8>
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USART_InitTypeDef USART_InitStructure; //<2F><><EFBFBD>ڽṹ<DABD>嶨<EFBFBD><E5B6A8>
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1|RCC_APB2Periph_AFIO,ENABLE);
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GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;//TX
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GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
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GPIO_Init(GPIOA,&GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;//RX
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GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
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GPIO_Init(GPIOA,&GPIO_InitStructure);
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
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NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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USART_InitStructure.USART_BaudRate=9600; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ9600
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USART_InitStructure.USART_WordLength=USART_WordLength_8b;
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USART_InitStructure.USART_StopBits=USART_StopBits_1;
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USART_InitStructure.USART_Parity=USART_Parity_No;
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USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
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USART_InitStructure.USART_Mode=USART_Mode_Rx|USART_Mode_Tx;
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USART_Init(USART1,&USART_InitStructure);
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USART_Cmd(USART1, ENABLE);
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USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//ʹ<>ܻ<EFBFBD><DCBB><EFBFBD>ʧ<EFBFBD><CAA7>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>USART<52>ж<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>
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USART_ClearFlag(USART1,USART_FLAG_TC);//<2F><><EFBFBD><EFBFBD>USARTx<54>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>־λ
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}
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