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serial port configuration for example sml_server

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This commit is contained in:
Juri Glass 2011-07-13 16:43:40 +02:00
parent 7de0675bf1
commit 65d5370d12
1 changed files with 42 additions and 8 deletions
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50
examples/sml_server.c
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@ -20,9 +20,48 @@
#include <fcntl.h> #include <fcntl.h>
#include <unistd.h> #include <unistd.h>
#include <errno.h> #include <errno.h>
#include <termios.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sml/sml_file.h> #include <sml/sml_file.h>
#include <sml/sml_transport.h> #include <sml/sml_transport.h>
int serial_port_open(const char* device) {
int bits;
struct termios config;
memset(&config, 0, sizeof(config));
int fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY);
if (fd < 0) {
printf("error: open(%s): %s\n", device, strerror(errno));
return -1;
}
// set RTS
ioctl(fd, TIOCMGET, &bits);
bits |= TIOCM_RTS;
ioctl(fd, TIOCMSET, &bits);
tcgetattr( fd, &config ) ;
// set 8-N-1
config.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP
| INLCR | IGNCR | ICRNL | IXON);
config.c_oflag &= ~OPOST;
config.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
config.c_cflag &= ~(CSIZE | PARENB | PARODD | CSTOPB);
config.c_cflag |= CS8;
// set speed to 9600 baud
cfsetispeed( &config, B9600);
cfsetospeed( &config, B9600);
tcsetattr(fd, TCSANOW, &config);
return fd;
}
void transport_receiver(unsigned char *buffer, size_t buffer_len) { void transport_receiver(unsigned char *buffer, size_t buffer_len) {
// the buffer contains the whole message, with transport escape sequences. // the buffer contains the whole message, with transport escape sequences.
// these escape sequences are stripped here. // these escape sequences are stripped here.
@ -36,15 +75,10 @@ void transport_receiver(unsigned char *buffer, size_t buffer_len) {
} }
int main(int argc, char **argv) { int main(int argc, char **argv) {
char *device = "your device here"; char *device = "/dev/cu.usbserial";
// this depends on your device (serial port, ip)
int fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY);
if (fd < 0) {
printf("error: %s - %s\n", device, strerror(errno));
return -1;
}
int fd = serial_port_open(device);
// this is a blocking call // this is a blocking call
sml_transport_listen(fd, &transport_receiver); sml_transport_listen(fd, &transport_receiver);