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Add support for higher speed ThumbDV (460800 Baud)

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This commit is contained in:
Ed Gonzalez 2015-08-04 15:18:23 -05:00
parent 76cd75b585
commit 5c93764a36
1 changed files with 104 additions and 4 deletions
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108
DSP_API/ThumbDV/thumbDV.c
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@ -288,6 +288,54 @@ static void thumbDV_writeSerial(int serial_fd, const unsigned char * buffer, uin
}
static int _check_serial(int fd )
{
unsigned char reset[5] = { 0x61, 0x00, 0x01, 0x00, 0x33 };
thumbDV_writeSerial(fd, reset, 5);
fd_set fds;
struct timeval timeout;
FD_ZERO(&fds);
FD_SET(fd, &fds);
errno = 0;
timeout.tv_sec = 2;
timeout.tv_usec = 0;
select(fd + 1, &fds, NULL, NULL, &timeout);
if ( FD_ISSET(fd, &fds)) {
int ret = thumbDV_processSerial(fd);
if ( ret != 0 ) {
output("Could not reset serial port FD = %d \n", fd);
return -1;
}
} else {
output("Could not reset serial port FD = %d \n", fd);
return -1;
}
unsigned char get_prodID[5] = {0x61, 0x00, 0x01, 0x00, 0x30 };
thumbDV_writeSerial(fd, get_prodID, 5 );
FD_ZERO(&fds);
FD_SET(fd, &fds);
errno = 0;
timeout.tv_sec = 2;
timeout.tv_usec = 0;
select(fd + 1,&fds,NULL, NULL, &timeout);
if ( FD_ISSET(fd, &fds)) {
int ret = thumbDV_processSerial(fd);
if ( ret != 0 ) {
output("Could not get prodID serial port FD = %d \n", fd);
return -1;
}
} else {
output("Could not prodID serial port FD = %d \n", fd);
return -1;
}
return 0 ;
}
int thumbDV_openSerial(const char * tty_name)
{
struct termios tty;
@ -306,6 +354,49 @@ int thumbDV_openSerial(const char * tty_name)
return -1;
}
cfsetospeed(&tty, B460800);
cfsetispeed(&tty, B460800);
tty.c_cflag = (tty.c_cflag & ~CSIZE) | CS8;
tty.c_iflag &= ~IGNBRK;
tty.c_lflag = 0;
tty.c_oflag = 0;
tty.c_cc[VMIN] = 1;
tty.c_cc[VTIME] = 5;
tty.c_iflag &= ~(IXON | IXOFF | IXANY);
tty.c_cflag |= (CLOCAL | CREAD);
tty.c_cflag &= ~(PARENB | PARODD);
tty.c_cflag &= ~CSTOPB;
tty.c_cflag &= ~CRTSCTS;
if (tcsetattr(fd, TCSANOW, &tty) != 0) {
output("ThumbDV: error %d from tcsetattr\n", errno);
close(fd);
return -1;
}
if ( _check_serial(fd) != 0 ) {
output("Could not detect ThumbDV at 460800 Baud. Trying 230400\n");
close(fd);
} else {
return fd;
}
fd = open(tty_name, O_RDWR | O_NOCTTY | O_SYNC);
if (fd < 0) {
output("ThumbDV: error when opening %s, errno=%d\n", tty_name, errno);
return fd;
}
if (tcgetattr(fd, &tty) != 0) {
output( "ThumbDV: error %d from tcgetattr\n", errno);
return -1;
}
cfsetospeed(&tty, B230400);
cfsetispeed(&tty, B230400);
@ -331,7 +422,11 @@ int thumbDV_openSerial(const char * tty_name)
return -1;
}
output("opened %s - fd = %d\n", tty_name, fd);
if ( _check_serial(fd) != 0 ) {
output("Could not detect THumbDV at 230400 Baud\n");
close(fd);
return -1;
}
return fd;
}
@ -347,7 +442,7 @@ int thumbDV_processSerial(int serial_fd)
len = read(serial_fd, buffer, 1);
if (len != 1) {
output(ANSI_RED "ThumbDV: error when reading from the serial port, len = %d, errno=%d\n" ANSI_WHITE, len, errno);
return 0;
return 1;
}
if (buffer[0U] != AMBE3000_START_BYTE) {
@ -399,7 +494,8 @@ int thumbDV_processSerial(int serial_fd)
} else {
output(ANSI_RED "Unrecognized packet type 0x%02X ", packet_type);
safe_free(desc);
return 1;
}
@ -581,7 +677,11 @@ void thumbDV_init(const char * serial_device_name, int * serial_fd)
do {
*serial_fd = thumbDV_openSerial("/dev/ttyUSB0");
if ( *serial_fd < 0 ) {
if ( *serial_fd < 0 )
*serial_fd = thumbDV_openSerial("/dev/ttyUSB1");
if ( * serial_fd < 0 )
{
output("Could not open serial. Waiting 1 second before trying again.\n");
usleep(1000 * 1000);
}