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WIP to change setportspeed into serial usb connectivity testing utility.

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This commit is contained in:
Wouter R 2013-08-23 16:24:36 +02:00
parent f7dc891c97
commit 57c342ff60
1 changed files with 81 additions and 65 deletions
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146
src/util/setportspeed/setportspeed.c
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@ -1,4 +1,6 @@
/*
* USB serial connectivity tester
*
* based on: http://lists.uclibc.org/pipermail/uclibc/2008-January/039683.html
* see: http://marc.info/?l=linux-serial&m=120661887111805&w=2
*/
@ -10,88 +12,102 @@
#include <string.h>
#include <unistd.h>
//these includes are for ioctl() and cfmakeraw() but disabled to avoid conflicts with asm/* includes
//#include <sys/ioctl.h>
//#include <termios.h>
#include <linux/serial.h>
#include <linux/termios.h>
#include <asm/ioctls.h>
#include <asm/termios.h>
static int serial_fd;
static char* serial_dev;
static int baud_rate;
typedef enum SET_SPEED_RESULT {
SSR_OK = 0, SSR_IO_GET, SSR_IO_SET, SSR_IO_MGET, SSR_IO_MSET1, SSR_IO_MSET2
} SET_SPEED_RESULT;
/* based on setSerialSpeed in UltiFi */
static int setPortSpeed(int fd, int speed) {
int rv;
struct termios2 options;
int modemBits;
if (ioctl(fd, TCGETS2, &options) < 0) return SSR_IO_GET;
cfmakeraw(&options);
// Enable the receiver
options.c_cflag |= CREAD;
// Clear handshake, parity, stopbits and size
options.c_cflag &= ~CLOCAL;
options.c_cflag &= ~CRTSCTS;
options.c_cflag &= ~PARENB;
options.c_cflag &= ~CSTOPB;
options.c_cflag &= ~CSIZE;
//set speed
options.c_ospeed = options.c_ispeed = speed;
options.c_cflag &= ~CBAUD;
options.c_cflag |= BOTHER;
options.c_cflag |= CS8;
options.c_cflag |= CLOCAL;
if (ioctl(fd, TCSETS2, &options) < 0) return SSR_IO_SET;
//toggle DTR
if (ioctl(fd, TIOCMGET, &modemBits) < 0) return SSR_IO_MGET);
modemBits |= TIOCM_DTR;
if (ioctl(fd, TIOCMSET, &modemBits) < 0) return SSR_IO_MSET1);
usleep(100 * 1000);
modemBits &=~TIOCM_DTR;
if (ioctl(fd, TIOCMSET, &modemBits) < 0) return SSR_IO_MSET2);
return SSR_OK;
}
int main(int argc, char** argv) {
struct termios2 options2;
int modemBits;
int serialfd = -1;
int ultiFiEnabled = 0;
int r;
const char* portname = NULL;
int baudrate = -1;
SET_SPEED_RESULT spdResult;
if (argc < 3) {
fprintf(stderr, "%s: please supply a port name followed by the port speed, optionally followed by '-ultifi'\n", argv[0]);
if (argc < 2) {
fprintf(stderr, "%s: please supply a port name, optionally followed by the port speed\n", argv[0]);
exit(1);
}
portname = argv[1];
baudrate = strtol(argv[2], NULL, 10);
serial_dev = argv[1];
if (argc >= 4 && strcmp(argv[3], "-ultifi") == 0) {
ultiFiEnabled = 1;
printf("%s: UltiFi-like bits will be set\n", argv[0]);
if (argc >= 3) {
baud_rate = strtol(argv[2], NULL, 10);
} else {
baud_rate = 115200;
}
serialfd = open(portname, O_RDWR);
if (serialfd == -1) {
serial_fd = open(serial_dev, O_RDWR);
if (serial_fd == -1) {
fprintf(stderr, "%s: could not open port %s (%s)\n", argv[0], portname, strerror(errno));
exit(2);
}
r = ioctl(serialfd, TCGETS2, &options2);
printf("using port %s with speed %i\n", serial_dev, baud_rate);
if (r == -1) {
fprintf(stderr, "%s: ioctl error on port %s (%s)\n", argv[0], portname, strerror(errno));
close(serialfd);
spdResult = setPortSpeed(baud_rate);
switch (spdResult) {
case SSR_OK:
printf("port opened ok\n");
break;
case SSR_IO_GET: fprintf(stderr, "ioctl error in setPortSpeed() on TCGETS2 (%s)\n", strerror(errno));
case SSR_IO_SET: fprintf(stderr, "ioctl error in setPortSpeed() on TCSETS2 (%s)\n", strerror(errno));
case SSR_IO_MGET: fprintf(stderr, "ioctl error in setPortSpeed() on TIOCMGET (%s)\n", strerror(errno));
case SSR_IO_MSET1: fprintf(stderr, "ioctl error in setPortSpeed() on TIOCMSET1 (%s)\n", strerror(errno));
case SSR_IO_MSET2: fprintf(stderr, "ioctl error in setPortSpeed() on TIOCMSET2 (%s)\n", strerror(errno));
exit(1);
break;
}
/***** START from UltiFi *****/
if (ultiFiEnabled == 1) {
//tcgetattr(fd, &options); //done using ioctl() above
cfmakeraw(&options2);
//TODO: rename this program to something like 'usb_serial_tester' (also change in Makefile etc.)
//TODO: make existing code above compile and behave as intended
//TODO: (maybe): add timing messages to detect how long everything takes and when (if) things get stuck
//TODO: periodically send message and check if it is returned (by tiny program on arduino which echoes everything back)
// Enable the receiver
options2.c_cflag |= CREAD;
// Clear handshake, parity, stopbits and size
options2.c_cflag &= ~CLOCAL;
options2.c_cflag &= ~CRTSCTS;
options2.c_cflag &= ~PARENB;
options2.c_cflag &= ~CSTOPB;
options2.c_cflag &= ~CSIZE;
options2.c_cflag |= CS8;
options2.c_cflag |= CLOCAL;
}
/***** END from UltiFi *****/
options2.c_ospeed = options2.c_ispeed = baudrate;
options2.c_cflag &= ~CBAUD;
options2.c_cflag |= BOTHER;
r = ioctl(serialfd, TCSETS2, &options2);
if (r == -1) {
fprintf(stderr, "%s: ioctl error on port %s (%s)\n", argv[0], portname, strerror(errno));
close(serialfd);
}
/***** START from UltiFi *****/
if (ultiFiEnabled == 1) {
ioctl(serialfd, TIOCMGET, &modemBits);
modemBits |= TIOCM_DTR;
ioctl(serialfd, TIOCMSET, &modemBits);
usleep(100 * 1000);
modemBits &= ~TIOCM_DTR;
ioctl(serialfd, TIOCMSET, &modemBits);
}
/***** END from UltiFi *****/
close(serialfd);
close(serial_fd);
exit(0);
}