148 lines
4.4 KiB
C
148 lines
4.4 KiB
C
#include "usart1_sdi.h"
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#include "bsp.h"
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//串口1中断服务程序
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//注意,读取USARTx->SR能避免莫名其妙的错误
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char USART1_SDI_RX_BUF[USART1_SDI_REC_LEN]; //接收缓冲,最大USART_REC_LEN个字节.
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char USART1_SDI_TX_BUF[100];
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//接收状态
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//bit15， 接收完成标志
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//bit14， 接收到0x0d
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//bit13~0， 接收到的有效字节数目
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u16 USART_SDI_RX_STA=0; //接收状态标记
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void USART1_SDI_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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Enable_SDI_RS232=0;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); //使能USART1_SDI_SDI
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE); //GPIOA时钟
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//NVIC_Configuration();
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USART_DeInit(USART1); //复位串口1
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//USART1_SDI_SDI_TX PB.6 PB.7
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
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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(GPIOB, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_USART1);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_USART1);
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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_Even; //奇校验，数据位变为7位
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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);//开启USART1_SDI_SDI的接收中断
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//USART1_SDI_SDI NVIC 配置
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NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;//串口3中断通道
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3;//抢占优先级3
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NVIC_InitStructure.NVIC_IRQChannelSubPriority =3; //子优先级3
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
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NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器、
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USART_ClearFlag(USART1,USART_FLAG_TC); //清除发送完成标志位
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}
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void USART1_SDI_CLR_RXBuf(void)
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{
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memset(USART1_SDI_RX_BUF, 0, USART1_SDI_REC_LEN);
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USART_SDI_RX_STA=0;
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}
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void USART1_SDI_SDI_CLR_TXBuf(void)
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{
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memset(USART1_SDI_TX_BUF, 0, 100);
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}
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void u1_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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va_start(ap,fmt);
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vsprintf((char*)USART1_SDI_TX_BUF,fmt,ap);
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va_end(ap);
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i=strlen((const char*)USART1_SDI_TX_BUF); //此次发送数据的长度
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for(j=0;j<i;j++) //循环发送数据
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{
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while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET); //循环发送,直到发送完毕
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USART_SendData(USART1,USART1_SDI_TX_BUF[j]);
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}
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}
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//void timer4_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_TIM4, ENABLE);
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// TIM_TimeBaseStructure.TIM_Period = 99;
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// TIM_TimeBaseStructure.TIM_Prescaler = 3199;//中断时间10ms
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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(TIM4, &TIM_TimeBaseStructure);
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//
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// /* TIM IT enable */
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// TIM_ITConfig(TIM4,TIM_IT_Update, ENABLE);
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// TIM_ClearITPendingBit(TIM4, TIM_IT_Update);
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// /* TIM4 enable counter */
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// TIM_Cmd(TIM4, DISABLE);
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// /* Enable the TIM4 Interrupt */
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//
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// NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn;
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// NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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// NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
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// NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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// NVIC_Init(&NVIC_InitStructure);
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//}
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////设置TIM4的开关
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////sta:0，关闭;1,开启;
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//void TIM4_Set(unsigned char sta)
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//{
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// if(sta)
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// {
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//
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// TIM_SetCounter(TIM4,0);//计数器清空
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// TIM_Cmd(TIM4, ENABLE); //使能TIMx
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// }else TIM_Cmd(TIM4, DISABLE);//关闭定时器2
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//}
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///**
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// * @brief This function handles TIM4 global interrupt request.
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// * @param None
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// * @retval None
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// */
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//void TIM4_IRQHandler(void)
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//{
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// if (TIM_GetITStatus(TIM4, TIM_IT_Update) != RESET)
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// {
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// USART_SDI_RX_STA|=1<<15; //标记接收完成;
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// TIM_ClearITPendingBit(TIM4, TIM_IT_Update);
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// TIM4_Set(0); //关闭TIM4
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//
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// }
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//}
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//串口3,printf 函数
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//确保一次发送数据不超过USART1_MAX_SEND_LEN字节
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