20260324
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166
IAPV1.1/Driver/usart/usart2.c
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166
IAPV1.1/Driver/usart/usart2.c
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#include "usart2.h"
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#include "stdio.h"
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#include "string.h"
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#include "pbdata.h"
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#include "stdarg.h"
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//<2F><><EFBFBD>ڽ<EFBFBD><DABD>ջ<EFBFBD><D5BB><EFBFBD><EFBFBD><EFBFBD>
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u8 USART2_RX_BUF[USART2_MAX_RECV_LEN]; //<2F><><EFBFBD>ջ<EFBFBD><D5BB><EFBFBD>,<2C><><EFBFBD><EFBFBD>USART2_MAX_RECV_LEN<45><4E><EFBFBD>ֽ<EFBFBD>.
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u8 USART2_TX_BUF[USART2_MAX_SEND_LEN]; //<2F><><EFBFBD>ͻ<EFBFBD><CDBB><EFBFBD>,<2C><><EFBFBD><EFBFBD>USART2_MAX_SEND_LEN<45>ֽ<EFBFBD>
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vu16 USART2_RX_STA=0;
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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void USART2_ReceiveBuff_Clear(void)
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{
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USART2_RX_STA=0;
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memset(USART2_RX_BUF,0,USART2_MAX_RECV_LEN);
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}
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//<2F><><EFBFBD><EFBFBD>2<EFBFBD><32><EFBFBD>ú<EFBFBD><C3BA><EFBFBD>
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void USART2_Configuration(u32 baund)
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{
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USART_InitTypeDef USART_InitStructure;
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GPIO_InitTypeDef GPIO_InitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); //ʹ<><CAB9>USART2
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); //GPIOBʱ<42><CAB1>
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//NVIC_Configuration();
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USART_DeInit(USART2); //<2F><>λ<EFBFBD><CEBB><EFBFBD><EFBFBD>1
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//USART2_TX PB.10 PB.11
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_USART2);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_USART2);
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USART_InitStructure.USART_BaudRate = baund;
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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(USART2,&USART_InitStructure);
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USART_Cmd(USART2,ENABLE);
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USART_ITConfig(USART2,USART_IT_RXNE,ENABLE);//<2F><><EFBFBD><EFBFBD>USART2<54>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD>ж<EFBFBD>
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//Usart1 NVIC <20><><EFBFBD><EFBFBD>
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NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;//<2F><><EFBFBD><EFBFBD>3<EFBFBD>ж<EFBFBD>ͨ<EFBFBD><CDA8>
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//<2F><>ռ<EFBFBD><D5BC><EFBFBD>ȼ<EFBFBD>3
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NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; //<2F><><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD>3
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQͨ<51><CDA8>ʹ<EFBFBD><CAB9>
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NVIC_Init(&NVIC_InitStructure); //<2F><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>VIC<49>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD>
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USART_ClearFlag(USART2,USART_FLAG_TC); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɱ<EFBFBD>־λ
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}
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//<2F><><EFBFBD><EFBFBD>2,printf <20><><EFBFBD><EFBFBD>
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//ȷ<><C8B7>һ<EFBFBD>η<EFBFBD><CEB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݲ<EFBFBD><DDB2><EFBFBD><EFBFBD><EFBFBD>USART2_MAX_SEND_LEN<45>ֽ<EFBFBD>
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void u2_printf(char* fmt,...)
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{
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u16 i,j;
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va_list ap;
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USART2_ReceiveBuff_Clear();
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va_start(ap,fmt);
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vsprintf((char*)USART2_TX_BUF,fmt,ap);
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va_end(ap);
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i=strlen((const char*)USART2_TX_BUF); //<2F>˴η<CBB4><CEB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵij<DDB5><C4B3><EFBFBD>
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for(j=0;j<i;j++) //ѭ<><D1AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{
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while(USART_GetFlagStatus(USART2,USART_FLAG_TC)==RESET); //ѭ<><D1AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,ֱ<><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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USART_SendData(USART2,USART2_TX_BUF[j]);
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}
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}
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void timer2_init(void)
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{
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TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
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TIM_TimeBaseStructure.TIM_Period = 999;
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TIM_TimeBaseStructure.TIM_Prescaler = 3199;
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TIM_TimeBaseStructure.TIM_ClockDivision = 1;
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TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
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TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
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/* TIM IT enable */
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TIM_ITConfig(TIM2,TIM_IT_Update, ENABLE);
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TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
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/* TIM2 enable counter */
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TIM_Cmd(TIM2, DISABLE);
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/* Enable the TIM2 Interrupt */
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NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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TIM_Cmd(TIM2, ENABLE); //ʹ<><CAB9>TIMx
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}
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//<2F><><EFBFBD><EFBFBD>TIM2<4D>Ŀ<EFBFBD><C4BF><EFBFBD>
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//sta:0<><30><EFBFBD>ر<EFBFBD>;1,<2C><><EFBFBD><EFBFBD>;
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void TIM2_Set(unsigned char sta)
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{
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if(sta)
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{
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TIM_SetCounter(TIM2,0);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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TIM_Cmd(TIM2, ENABLE); //ʹ<><CAB9>TIMx
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}else TIM_Cmd(TIM2, DISABLE);//<2F>رն<D8B1>ʱ<EFBFBD><CAB1>2
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}
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/**
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* @brief This function handles TIM2 global interrupt request.
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* @param None
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* @retval None
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*/
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void TIM2_IRQHandler(void)
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{
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if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
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{
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TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
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WKUP_PIN_Status=Key_Scan();
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}
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}
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//<2F><><EFBFBD><EFBFBD>2<EFBFBD>жϷ<D0B6><CFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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void USART2_IRQHandler(void)
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{
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u8 res;
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if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)//<2F><><EFBFBD>յ<EFBFBD><D5B5><EFBFBD><EFBFBD><EFBFBD>
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{
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res =USART_ReceiveData(USART2);
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if((USART2_RX_STA&(1<<15))==0)//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><>û<EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD><EFBFBD><EFBFBD>ٽ<EFBFBD><D9BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{
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if(USART2_RX_STA<(USART2_MAX_RECV_LEN-1)) //<2F><><EFBFBD><EFBFBD><EFBFBD>Խ<EFBFBD><D4BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{
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// TIM_SetCounter(TIM2,0);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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// if(USART2_RX_STA==0) //ʹ<>ܶ<EFBFBD>ʱ<EFBFBD><CAB1>7<EFBFBD><37><EFBFBD>ж<EFBFBD>
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// {
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// TIM_Cmd(TIM2,ENABLE);//ʹ<>ܶ<EFBFBD>ʱ<EFBFBD><CAB1>7
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// }
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USART2_RX_BUF[USART2_RX_STA++]=res; //<2F><>¼<EFBFBD><C2BC><EFBFBD>յ<EFBFBD><D5B5><EFBFBD>ֵ
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}else
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{
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USART2_RX_STA|=1<<15; //ǿ<>Ʊ<EFBFBD><C6B1>ǽ<EFBFBD><C7BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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}
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}
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}
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}
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