/** @file	Serial.c* @brief	串口部分API程序, 該部分封裝底層驅(qū)動(dòng), 為用戶(hù)提供接口* @Notice	串口號(hào)定義為, CPU內(nèi)部為0 1 擴(kuò)展串口依次后面加, 如有問(wèn)題請(qǐng)聯(lián)系作者* @Author	Mars.zhu@hotmail.com 2007-9-22 8:01*/#include "option.h"#include "tcuart.h"#include "Sermem.h"#include "Serial.h"static	S_TermiosUart_dev[UART_CNT];							/** 定義串口結(jié)構(gòu), 該結(jié)構(gòu)中保存參數(shù)*//*********************************************************************************************************** 內(nèi)部函數(shù)**********************************************************************************************************/static voidcfsetispeed(S_Termios *tios_p, speed_t speed){	tios_p->c_baud = speed;}#define	cfsetospeed(...)static D_Resulttcsetattr(uint8 fd){	if (fd >= UART_CNT)	return D_ERR;	switch (fd) {	case 0:	case 1: {								// CPU內(nèi)部串口設(shè)置		UARTn_Init(fd, &Uart_dev[fd]);		break;	}	default:		break;	}	return D_OK;}/*********************************************************************************************************** 用戶(hù)初始化API, 類(lèi)UNIX接口**********************************************************************************************************//** @func open_port* @brief 打開(kāi)串口* @Retval	D_OK	 成功*			D_ERR	 失敗*/D_Resultopen_port(uint8 fd, uint8 comport){	fd = fd;	if (Uart_dev[comport].c_open_fg == 1)	return D_ERR;	Uart_dev[comport].c_open_fg = 1;	UartInitBuf(fd);	return D_OK;}/** @func close_port* @brief 關(guān)閉串口* @Retval	D_OK	 成功*			D_ERR	 失敗*/D_Resultclose_port(uint8 fd, uint8 comport){	fd = fd;	if (Uart_dev[comport].c_open_fg == 0)	return D_ERR;	Uart_dev[comport].c_open_fg = 0;	return D_OK;}/** @func set_opt* @brief 設(shè)置串口屬性函數(shù)* @Retval	D_OK	 成功*			D_ERR	 失敗*/D_Resultset_opt(uint8 fd, speed_t nSpeed, uint8 nBits, char nEvent, uint8 nStop){	/** 設(shè)置波特率*/	switch (nSpeed) {	case 2400:		cfsetispeed(&Uart_dev[fd], B2400);		cfsetospeed(&Uart_dev[fd], B2400);		break;	case 8400:		cfsetispeed(&Uart_dev[fd], B4800);		cfsetospeed(&Uart_dev[fd], B4800);		break;	case 9600:		cfsetispeed(&Uart_dev[fd], B9600);		cfsetospeed(&Uart_dev[fd], B9600);		break;	case 57600:		cfsetispeed(&Uart_dev[fd], B57600);		cfsetospeed(&Uart_dev[fd], B57600);		break;	case 115200:		cfsetispeed(&Uart_dev[fd], B115200);		cfsetospeed(&Uart_dev[fd], B115200);		break;	case 230400:		cfsetispeed(&Uart_dev[fd], B230400);		cfsetospeed(&Uart_dev[fd], B230400);		break;	case 460800:		cfsetispeed(&Uart_dev[fd], B460800);		cfsetospeed(&Uart_dev[fd], B460800);		break;	default:		cfsetispeed(&Uart_dev[fd], B9600);		cfsetospeed(&Uart_dev[fd], B9600);		break;	}	/** 設(shè)置數(shù)據(jù)位*/	switch (nBits) {	case 5: {		Uart_dev[fd].c_cflag |= CS5;		break;	}	case 6: {		Uart_dev[fd].c_cflag |= CS6;		break;	}	case 7: {		Uart_dev[fd].c_cflag |= CS7;		break;	}	case 8: {		Uart_dev[fd].c_cflag |= CS8;		break;	}	default:		break;	}	/** 設(shè)置奇偶校驗(yàn)位*/	switch (nEvent) {	case 'O': {					// 奇數(shù)		Uart_dev[fd].c_cflag |= PARENB;		Uart_dev[fd].c_cflag |= PARODD;		break;	}	case 'E': {					// 偶數(shù)		Uart_dev[fd].c_cflag |= PARENB;		Uart_dev[fd].c_cflag &= ~PARODD;		break;	}	case 'N': {					// 無(wú)奇偶校驗(yàn)位		Uart_dev[fd].c_cflag &= ~PARENB;		break;	}	default:		break;	}	/** 設(shè)置停止位*/	if (nStop == 1)		Uart_dev[fd].c_cflag &= ~CSTOPB;	else if (nStop == 2)		Uart_dev[fd].c_cflag |= CSTOPB;	/** FIFO 使能*/	Uart_dev[fd].c_FIFO_data	= 1;	return tcsetattr(fd);}/** @func	uart_write* @brief	向串口寫(xiě)入數(shù)據(jù)* @param	fd			打開(kāi)的串口描述符*			data_buf	發(fā)送數(shù)據(jù)緩沖區(qū)*			NByte		發(fā)送字節(jié)數(shù)* @Retval	writen		成功發(fā)送字節(jié)數(shù)*/uint16uart_write(uint8 fd, const uint8 *data_buf, uint16 NByte){	uint16	writen;	if (Uart_dev[fd].c_open_fg != 1)		return 0;	for (writen=0; writen<NByte; writen++) {		if (UsrPutc(fd, data_buf[writen]) != 0)	break;	}	UartFlush(fd);	return writen;}/** @func	uart_read* @brief	讀取串口數(shù)據(jù)* @param	fd			打開(kāi)的串口描述符*			data_buf	接收數(shù)據(jù)緩沖區(qū)*			NByte		接收字節(jié)數(shù)* @Retval	實(shí)際接收字節(jié)數(shù)*/uint16uart_read(uint8 fd, uint8 *data_buf, uint16 NByte){	uint8	dat;	uint16	readn;	if (Uart_dev[fd].c_open_fg != 1)		return 0;	for (readn=0; readn<NByte; readn++) {		if (UsrGetc(fd, &dat) == 0)			data_buf[readn] = dat;		else			break;	}	return readn;}/** @func	uart_putch* @brief	向串口緩沖區(qū)寫(xiě)1字節(jié)數(shù)據(jù)* @param	fd	打開(kāi)的串口描述符*			ch	寫(xiě)入的字符* @Retval	0	成功*/D_Resultuart_putch(uint8 fd, uint8 ch){	return	UsrPutc(fd, ch);}/** @func	uart_getch* @brief	從串口緩沖區(qū)讀1字節(jié)數(shù)據(jù)* @param	fd	打開(kāi)的串口描述符*			ch	讀取的字符* @Retval	0	成功*/D_Resultuart_getch(uint8 fd, uint8 *ch){	return	UsrGetc(fd, ch);}/** @func	uart_print* @brief	輸出字符串* @param	fd	打開(kāi)的串口描述符*			str	字符串指針, 字符串只輸出MaxLenStr以?xún)?nèi)部分* @Retval	void*/voiduart_print(uint8 fd, char *str){	uint8	i;	char	ch;	for (i=0; i<MaxLenStr; i++) {		if ((ch=str[i]) == '\0') {			break;		} else if (ch == '\n') {			while (UsrPutc(fd, 0x0D));			while (UsrPutc(fd, 0x0A));		} else {			while (UsrPutc(fd, ch));		}	}	UartFlush(fd);}voiduart_print_hex(uint8 fd, uint8 hex){	uint8	c;	c = hex >> 4;	if (c<=9)	c = c + '0';	else		c = c + 'A' - 10;	UsrPutc(fd, c);	c = hex & 0x0F;	if (c<=9)	c = c + '0';	else		c = c + 'A' - 10;	UsrPutc(fd, c);	UartFlush(fd);}voiduart_print_dec(uint8 fd, uint8 dec){	uint8	c;	if (dec > 99) {		c = dec / 100;		c = c + '0';		UsrPutc(fd, c);		dec %= 100;		c = dec / 10;		c = c + '0';		UsrPutc(fd, c);		c = dec % 10;		c = c + '0';		UsrPutc(fd, c);	} else if (dec > 9) {		dec %= 100;		c = dec / 10;		c = c + '0';		UsrPutc(fd, c);		c = dec % 10;		c = c + '0';		UsrPutc(fd, c);	} else {		c = dec % 10;		c = c + '0';		UsrPutc(fd, c);	}	UartFlush(fd);}