static void
spk_write (const unsigned char *address, unsigned int count)
{
serialWriteData(CB_serialDevice, address, count);
spk_written += count;
}
static void
spk_mute (SpeechSynthesizer *spk)
{
unsigned char *mute_seq = (unsigned char *)MUTE_SEQ;
serialWriteData (MB_serialDevice, mute_seq+1, mute_seq[0]);
}
static int
writeSerialBytes (const unsigned char *buffer, int length, unsigned int *delay) {
int count = serialWriteData(serialDevice, buffer, length);
if (delay && (count != -1)) *delay += (length * 1000 / charactersPerSecond) + 1;
return count;
}
static int
writeSerialBytes (const unsigned char *buffer, int length) {
return serialWriteData(serialDevice, buffer, length);
}
static int
writeSerialBytes (const unsigned char *buffer, size_t size) {
return serialWriteData(serialDevice, buffer, size);
}
static int brl_construct (BrailleDisplay *brl, char **parameters, const char *device) {
short n, success; /* loop counters, flags, etc. */
unsigned char *init_seq = (unsigned char *)"\002\0330"; /* string to send to Braille to initialise: [ESC][0] */
unsigned char *init_ack = (unsigned char *)"\002\033V"; /* string to expect as acknowledgement: [ESC][V]... */
unsigned char c;
if (!isSerialDevice(&device)) {
unsupportedDevice(device);
return 0;
}
brlcols = -1; /* length of braille display (auto-detected) */
prevdata = rawdata = NULL; /* clear pointers */
/* No need to load translation tables, as these are now
* defined in tables.h
*/
/* Now open the Braille display device for random access */
if (!(MB_serialDevice = serialOpenDevice(device))) goto failure;
if (!serialRestartDevice(MB_serialDevice, BAUDRATE)) goto failure;
if (!serialSetFlowControl(MB_serialDevice, SERIAL_FLOW_HARDWARE)) goto failure;
/* MultiBraille initialisation procedure:
* [ESC][V][Braillelength][Software Version][CR]
* I guess, they mean firmware version with software version :*}
* firmware version == [Software Version] / 10.0
*/
success = 0;
if (init_seq[0])
if (serialWriteData (MB_serialDevice, init_seq + 1, init_seq[0]) != init_seq[0])
goto failure;
hasTimedOut (0); /* initialise timeout testing */
n = 0;
do {
approximateDelay (20);
if (serialReadData (MB_serialDevice, &c, 1, 0, 0) == 0)
continue;
if (n < init_ack[0] && c != init_ack[1 + n])
continue;
if (n == init_ack[0]) {
brlcols = c, success = 1;
/* reading version-info */
/* firmware version == [Software Version] / 10.0 */
serialReadData (MB_serialDevice, &c, 1, 0, 0);
logMessage (LOG_INFO, "MultiBraille: Version: %2.1f", c/10.0);
/* read trailing [CR] */
serialReadData (MB_serialDevice, &c, 1, 0, 0);
}
n++;
}
while (!hasTimedOut (ACK_TIMEOUT) && n <= init_ack[0]);
if (success && (brlcols != 25)) {
if ((prevdata = malloc(brl->textColumns * brl->textRows))) {
if ((rawdata = malloc(20 + (brl->textColumns * brl->textRows * 2)))) {
brl->textColumns = brlcols;
brl->textRows = BRLROWS;
brl->statusColumns = 5;
brl->statusRows = 1;
{
static const DotsTable dots = {
0X01, 0X02, 0X04, 0X80, 0X40, 0X20, 0X08, 0X10
};
makeOutputTable(dots);
}
return 1;
} else {
logMallocError();
}
free(prevdata);
} else {
logMallocError();
}
}
failure:
if (MB_serialDevice) {
serialCloseDevice(MB_serialDevice);
MB_serialDevice = NULL;
}
return 0;
}
