WK2124 SPI扩展4路串口驱动程序

#include "wk2xxx.h" #include "delay.h" #include "usart.h" #include "io.h" #include "ucos_ii.h" //---芯片驱动函数，可以精简 static u8 SpiSendGetByte(char send_data); static void Wk2124SetComSet(u8 port,u8 databit, u8 stopbit, u8 oddeven); static void WK2124_Enable_TXF_Empty_Int(u8 port); static void WK2124_Disable_TXF_Empty_Int(u8 port); static u8 Wk2124ReadReg(u8 port,u8 reg); static void Wk2124Init(u8 port); static void Wk2124SetBaud(u8 port,int baud); static void Wk2124WriteFifo(u8 port,u8 *wbuf,u16 len); static void Wk2124ReadFifo(u8 port,u8 *rbuf,u16 len); static u16 Wk2124SendBuf(u8 port, u8 *sendbuf,u16 len); static void WK2XXX_EXTIX_Init(void); static void WK2XXX_SPI_Init(void); //---串口收发缓存，在头文件修改缓存大小 static unsigned char aux_uart1_rcv[AUX_UART1_RECV_SIZE]; static unsigned char aux_uart2_rcv[AUX_UART2_RECV_SIZE]; static unsigned char aux_uart3_rcv[AUX_UART3_RECV_SIZE]; static unsigned char aux_uart4_rcv[AUX_UART4_RECV_SIZE]; static unsigned char aux_uart1_snd[AUX_UART1_SEND_SIZE]; static unsigned char aux_uart2_snd[AUX_UART2_SEND_SIZE]; static unsigned char aux_uart3_snd[AUX_UART3_SEND_SIZE]; static unsigned char aux_uart4_snd[AUX_UART4_SEND_SIZE]; static unsigned char uart_int_flag = 0;//中断标志位，读取之后清零 usr_uart_t aux_uart[AUX_UART_NUM];//串口收发队列 OS_EVENT *WK0RSem;//任务驱动信号量 /*************************************************************************** Function: uart_buf_init Description: 初始化单个串口接收和发送缓存队列，复位指针 Input: uart - 串口收发数据队列地址 rbuf - 接收数据缓存 rsize - 接收数据缓存大小 sbuf - 发送数据缓存 ssize- 发送数据缓存大小 Return: HRG - 2022/3/10 - V0.1 Others: ***************************************************************************/ static void single_uart_buf_init(usr_uart_t * uart, u8 *rbuf, int rsize, u8 *sbuf, int ssize) { INT8U err; uart->recv.in = 0; uart->recv.out = 0; uart->send.total = 0; uart->recv.total = 0; uart->send.in = 0; uart->send.out = 0; uart->recv.buffer = rbuf; uart->recv.size = rsize; uart->send.buffer = sbuf; uart->send.size = ssize; uart->recv.mut = OSMutexCreate(3, &err); uart->send.mut = OSMutexCreate(4, &err); } /*************************************************************************** Function: usr_uart_buff_init Description: 初始化接收和发送缓存队列 Input: void Return: HRG - 2022/3/10 - V0.1 Others: ***************************************************************************/ static void usr_uart_buff_init(void) { single_uart_buf_init(&aux_uart[AUX_UART1_INDEX], aux_uart1_rcv, AUX_UART1_RECV_SIZE, aux_uart1_snd, AUX_UART1_SEND_SIZE); single_uart_buf_init(&aux_uart[AUX_UART2_INDEX], aux_uart2_rcv, AUX_UART2_RECV_SIZE, aux_uart2_snd, AUX_UART2_SEND_SIZE); single_uart_buf_init(&aux_uart[AUX_UART3_INDEX], aux_uart3_rcv, AUX_UART3_RECV_SIZE, aux_uart3_snd, AUX_UART3_SEND_SIZE); single_uart_buf_init(&aux_uart[AUX_UART4_INDEX], aux_uart4_rcv, AUX_UART2_RECV_SIZE, aux_uart4_snd, AUX_UART4_SEND_SIZE); } /*************************************************************************** Function: EXTI9_5_IRQHandler Description: WK2124接收触发中断函数 Input: void Return: HRG - 2022/3/10 - V0.1 Others: ***************************************************************************/ void EXTI9_5_IRQHandler(void) { OS_CPU_SR cpu_sr=0; OS_ENTER_CRITICAL(); EXTI_ClearITPendingBit(EXTI_Line8);//清除LINE4上的中断标志位 uart_int_flag = Wk2124ReadReg(WK2XXX_GPORT,WK2XXX_GIFR) & 0xf; OSSemPost(WK0RSem); OS_EXIT_CRITICAL(); } /*************************************************************************** Function: init_wk2124_hard_port Description: 初始化端口和数据队列函数，在初始中调用1次 Input: void Return: HRG - 2022/3/11 - V0.1 Others: ***************************************************************************/ void init_wk2124_hard_port(void) { WK0RSem = OSSemCreate(0); //WK0 WK2XXX_SPI_Init(); usr_uart_buff_init(); } /*************************************************************************** Function: init_aux_uart Description: 初始化串口函数，在初始中调用1次 Input: void Return: HRG - 2022/3/11 - V0.1 Others: ***************************************************************************/ void init_aux_uart(u8 uartport,u32 baud, u8 databit, u8 stopbit, u8 oddeven) { Wk2124Init(uartport+1); Wk2124SetComSet(uartport+1,databit,stopbit,oddeven); Wk2124SetBaud(uartport+1,baud); } /*************************************************************************** Function: os_get_uart_int_flag Description: 获取中断触发的串口标志，因为在中断中已经读取了串口标志，直接让任务方位，省去重复读取，且获取之后立刻清空标志 Input: Return: HRG - 2022/3/10 - V0.1 Others: ***************************************************************************/ unsigned char os_get_uart_int_flag(void) { unsigned char ret = uart_int_flag; uart_int_flag = 0; return ret; } /*************************************************************************** Function: os_aux_uart_recvdata Description: 串口接收数据处理函数，这个函数需要在任务中调用 Input: uartindex - 串口号 timeout_tick - 接收强制超时退出时间,单位系统tick， Return: 读取状态 0-读取完成，1-超时 HRG - 2022/3/10 - V0.1 Others: 这个函数需要联合接收中断，在外部中断中发送信号量，然后再在在任务中调用该函数接收数据 ***************************************************************************/ int os_aux_uart_recvdata(u8 uartindex, int timeout_tick) { INT8U err; int i; u8 tembuf[256]; int intick; int ret = 0; u16 rfcnt = 0; u8 fsr; uartindex = uartindex%AUX_UART_NUM; intick = OSTimeGet(); //OSMutexPend(WK_SPI_mut,1000,&err);//等待互斥解锁,这里设置的是1000个tick，按照5mstick为5s时间 fsr = Wk2124ReadReg(uartindex+1,WK2XXX_FSR); if(fsr & WK2XXX_RDAT) { rfcnt = Wk2124ReadReg(uartindex+1,WK2XXX_RFCNT); if(rfcnt == 0) { rfcnt = 256; } } while(rfcnt) { //这里可以开一个256字节缓存，先读数据，再从缓存中copy到数据接口中，担心这样会造成不必要的浪费，这样的话，互斥等待时间会比较长，依赖spi读取的时间。 OSMutexPend(aux_uart[uartindex].recv.mut,200,&err);//等待接收数据互斥量，防止某些任务中正在使用接收数据的情况 /*Wk2124ReadFifo(uartindex+1,tembuf,rfcnt); for(i=0;i<rfcnt;i++) { aux_uart[uartindex].recv.buffer[aux_uart[uartindex].recv.in%aux_uart[uartindex].recv.size] = tembuf[i]; aux_uart[uartindex].recv.in++; aux_uart[uartindex].recv.total++; } aux_uart[uartindex].recv.in %= aux_uart[uartindex].recv.size;*/ if(rfcnt < (aux_uart[uartindex].recv.size - aux_uart[uartindex].recv.in)) { Wk2124ReadFifo(uartindex+1,&aux_uart[uartindex].recv.buffer[aux_uart[uartindex].recv.in],rfcnt); aux_uart[uartindex].recv.in += rfcnt; aux_uart[uartindex].recv.total += rfcnt; } else { rfcnt = aux_uart[uartindex].recv.size - aux_uart[uartindex].recv.in; Wk2124ReadFifo(uartindex+1, &aux_uart[uartindex].recv.buffer[aux_uart[uartindex].recv.in],rfcnt); aux_uart[uartindex].recv.in += rfcnt; aux_uart[uartindex].recv.total += rfcnt; } aux_uart[uartindex].recv.in %= aux_uart[uart