155 lines
2.9 KiB
C
155 lines
2.9 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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//#define DBG 1
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//#include "config.h"
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//#include "input_inf.h"
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#include "serial.h"
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#include "uartinf.h"
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#define Dbg printf
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#define MAX_CMD_SIZE 128
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static int fds[UART_NUM];
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#if 1
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int uart_read(UART_INTF uart_type, char* str)
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{
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int fd = fds[uart_type];
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fd_set read_fds;
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struct timeval TimeoutVal;
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int ret=0;
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FD_ZERO(&read_fds);
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FD_SET(fd, &read_fds);
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TimeoutVal.tv_sec = 1;
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TimeoutVal.tv_usec = 800*1000;
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ret = select(fd+1, &read_fds, NULL, NULL, &TimeoutVal);
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if(ret < 0) {
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perror("[select]");
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} else if (0 == ret) {
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//timeout
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} else {
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if(FD_ISSET(fd, &read_fds)) {
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ret = read(fd, str, MAX_CMD_SIZE);
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//ret = read(fd, str, 4);
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printf("----uart receive %d data\n", ret);
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}else
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ret = 0;
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}
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return ret;
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}
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int uart_get(UART_INTF uart_type, char* str)
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{
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int fd = fds[uart_type];
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fd_set read_fds;
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struct timeval TimeoutVal;
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int ret, retry_cnt = 0, size = 0;
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retry:
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FD_ZERO(&read_fds);
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FD_SET(fd, &read_fds);
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TimeoutVal.tv_sec = 0;
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TimeoutVal.tv_usec = 100*1000;
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ret = select(fd+1, &read_fds, NULL, NULL, &TimeoutVal);
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if(ret < 0) {
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perror("[select]");
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goto exit;
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} else if (0 == ret) {
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retry_cnt++;
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//printf("++\n");
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if(retry_cnt < 5)
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goto retry;
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} else {
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if(FD_ISSET(fd, &read_fds)) {
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ret = read(fd, str+size, MAX_CMD_SIZE);
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size += ret;
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//if(str[size-4] == 'O' && str[size-3] == 'K'){
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if(str[size-1] == '_'){
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str[size] = '\0';
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Dbg("----uart receive %d data: %s\n", size, str);
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return size;
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}else
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goto retry;
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}
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}
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exit:
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return ret;
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}
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/*
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int uart_get(UART_INTF uart_type, char* str)
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{
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int fd = fds[uart_type];
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fd_set read_fds;
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struct timeval TimeoutVal;
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int ret, retry_cnt = 0, size = 0;
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do {
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//ret = read(fd, str+size, MAX_CMD_SIZE);
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ret = read(fd, str+size, 1);
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printf("++\n");
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if(ret>0)
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size += ret;
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if(size>3000)
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return 0;
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if(ret <= 0)
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usleep(20000);
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} while(str[size-1] != '_');
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str[size] = '\0';
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Dbg("----uart receive %d data: %s\n", size, str);
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return size;
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}*/
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#endif
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int uart_write(UART_INTF uart_type, char* str)
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{
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int fd = fds[uart_type];
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int ret;
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printf("len is %d\n",strlen(str));
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//Dbg(("----uart%d write %s\n", uart_type, str));
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ret = write(fd, str, strlen(str));
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return ret;
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}
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int uart_init(UART_INTF uart_type, char *device, int speed, int parity)
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{
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int fd;
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fd = open_dev(device);
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if (fd > 0) {
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set_Speed(fd, speed);
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} else {
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fprintf(stderr, "Error opening %s: %s\n", device, strerror(errno));
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return -1;
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}
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if (set_Parity(fd,8,1,parity) == 0) {
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fprintf(stderr, "Set Parity Error\n");
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close(fd);
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return -1;
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}
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fds[uart_type] = fd;
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return 1;
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}
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void uart_exit(UART_INTF uart_type)
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{
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int fd = fds[uart_type];
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close_dev(fd);
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}
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