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| #include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <sys/fcntl.h>
#include <unistd.h>
#include "serial_port.h"
void read_Serial_Port(const char* DEVICE_PORT)
{
int file;
struct termios options;
char *message;
unsigned int nCountMax = 60;
unsigned long* pCountRead = 0;
bool b;
file = open(DEVICE_PORT, O_RDONLY | O_NOCTTY | O_NDELAY);
if(file == -1){perror("Unable to open the serial port\n");}
printf("Serial port open successful\n");
tcgetattr(file, &options);
cfsetispeed(&options, B9600);
cfsetospeed(&options, B9600);
options.c_cflag |= (CLOCAL | CREAD);
options.c_cflag |= PARENB; //No parity
options.c_cflag |= PARODD;
options.c_cflag &= ~CSTOPB;
options.c_cflag &= ~CSIZE;
options.c_cflag |= CS8; //8 bits
options.c_iflag |= (INPCK | ISTRIP);
tcsetattr(file, TCSANOW, &options);
fcntl(file, F_SETFL, FNDELAY);
printf("Reading serial port ...\n\n");
b = readMessage(file, message, nCountMax, pCountRead);
if (b == 0){printf("Error while reading serial port\n");}
else printf("Serial port read successful\n");
close(file);
printf("Serial port closed\n");
};
bool readMessage(int file, char *message, unsigned int nCountMax, unsigned long* pCountRead)
{
int nbCharToRead;
char data[] = "";
int i;
if (file != 0)
{
nbCharToRead = 100;
i = 0;
if (nbCharToRead > 30)
{
while (i<nCountMax && data != ".")
{
if (read(file,&data,1) == -1)
{
printf("reception error\n");
return false;
}
else
{
message[i] = *data;
i++;
}
}
}
message[i] = 0;
*pCountRead = (unsigned long) i;
return true;
}
}; |
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