#ifdef __cplusplus
extern "C"{
#endif
#include <stdio.h>
#include "uart.h"
#ifdef __cplusplus
}
#endif

int serial_init(char * uart_port, int speed)
{
 int fd;
 int SerialSpeed = speed;

 printf("Open [%s] with [%d]\n", uart_port, speed);

 fd = serial_open(uart_port);
 if(fd == -1)
 {
 printf("open fail\n");
 return -1; // 失败
 }
 if (serial_set(fd, SerialSpeed, 0, 8, 1, 'N') != 0)
 {
 return -1;
 }
 return fd;
}

int uart_demo(char * uart_dev_path)
{
 // 打开串口
 unsigned int i;
 char uart_path [32] = "/dev/ttyS6";
 int speed = 115200;
 int uart_fd;

 if(uart_dev_path != NULL)
 {
 uart_fd = serial_init(uart_dev_path, speed);
 } else
 {
 uart_fd = serial_init(uart_path, speed);
 }
 if(uart_fd < 0)
 {
 return -1;
 }

 // 接收uart
 unsigned char recv_buff[256];
 int timeout_s = 0;
 int timeout_us = 3000;
 int len;

 printf("Start Echo.\n");
 while(1)
 {
 len = serial_recv(uart_fd, recv_buff, sizeof(recv_buff), timeout_s, timeout_us);
 if (len <= 0)
 {
 continue;
 }
 // 将收到的数据发送出去
 serial_send(uart_fd, recv_buff, len);
 }

 return 0;
}

/*
int main(int argc, char * argv[])
{
 if(argc != 0)
 {
 return uart_demo(argv[1]);
 }
 return 0;
}
*/