2019-07-22 14:31:55 -06:00
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <termios.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <strings.h>
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#include <stdlib.h>
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#define BAUDRATE B921600
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#define MODEMDEVICE "/dev/ttyACM0"
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#define _POSIX_SOURCE 1 /* POSIX compliant source */
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#define FALSE 0
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#define TRUE 1
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volatile int STOP=FALSE;
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int main()
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{
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int fd,c, res;
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struct termios oldtio,newtio;
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char buf[255];
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fd = open(MODEMDEVICE, O_RDWR | O_NOCTTY );
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if (fd <0) {perror(MODEMDEVICE); exit(-1); }
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tcgetattr(fd,&oldtio); /* save current port settings */
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bzero(&newtio, sizeof(newtio));
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newtio.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
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newtio.c_iflag = IGNPAR;
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newtio.c_oflag = 0;
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/* set input mode (non-canonical, no echo,...) */
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newtio.c_lflag = 0;
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newtio.c_cc[VTIME] = 0; /* inter-character timer unused */
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newtio.c_cc[VMIN] = 5; /* blocking read until 5 chars received */
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tcflush(fd, TCIFLUSH);
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tcsetattr(fd,TCSANOW,&newtio);
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for(;;) {
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2019-07-24 05:24:48 -06:00
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res = read(fd, buf, 25);
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2019-07-22 14:31:55 -06:00
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if(res < 0)
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break;
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for(int n=0; n < res; ++n)
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printf("%c", buf[n]);
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2019-07-24 05:24:48 -06:00
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fflush(stdout);
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2019-07-22 14:31:55 -06:00
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}
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tcsetattr(fd,TCSANOW,&oldtio);
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}
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