static int
brl_construct (BrailleDisplay *brl, char **parameters, const char *device) {
if (!isSerialDevice(&device)) {
unsupportedDevice(device);
return 0;
}
if ((serialDevice = serialOpenDevice(device))) {
if (serialRestartDevice(serialDevice, serialBaud)) {
serialCharactersPerSecond = serialBaud / serialGetCharacterBits(serialDevice);
/* hm, how to switch to 38400 ?
static const unsigned char sequence[] = {ESC, 'V', CR};
writeData(brl, sequence, sizeof(sequence));
serialDiscardInput(serialDevice);
serialSetBaud(serialDevice, 38400);
*/
{
static const DotsTable dots = {
0X01, 0X02, 0X04, 0X80, 0X40, 0X20, 0X08, 0X10
};
makeOutputTable(dots);
}
clearCells(textCells, sizeof(textCells));
clearCells(statusCells, sizeof(statusCells));
resetInputMode();
cursorDots = 0XFF;
cursorOffset = sizeof(textCells) / 2;
brl->textColumns = sizeof(textCells);
brl->textRows = 1;
brl->statusColumns = sizeof(statusCells);
brl->statusRows = 1;
beep(brl);
return 1;
}
serialCloseDevice(serialDevice);
serialDevice = NULL;
}
return 0;
}
static int
brl_readCommand (BrailleDisplay *brl, KeyTableCommandContext context) {
unsigned char byte;
const InputMode *mode;
const InputBinding *binding;
{
int result = serialReadData(serialDevice, &byte, 1, 0, 0);
if (result == 0) {
if (inputMode->temporary)
if (afterTimePeriod(&inputPeriod, NULL))
resetInputMode();
return EOF;
}
if (result == -1) {
logSystemError("read");
return BRL_CMD_RESTARTBRL;
}
}
mode = inputMode;
if (mode->temporary) resetInputMode();
switch (byte) {
case KEY_F1: binding = &mode->keyF1; break;
case KEY_F2: binding = &mode->keyF2; break;
case KEY_LEFT: binding = &mode->keyLeft; break;
case KEY_RIGHT: binding = &mode->keyRight; break;
case KEY_UP: binding = &mode->keyUp; break;
case KEY_DOWN: binding = &mode->keyDown; break;
case KEY_CENTER: binding = &mode->keyCenter; break;
default:
logMessage(LOG_WARNING, "unhandled key: %s -> %02X", mode->name, byte);
beep(brl);
return EOF;
}
switch (binding->type) {
case IBT_unbound:
logMessage(LOG_WARNING, "unbound key: %s -> %02X", mode->name, byte);
beep(brl);
break;
case IBT_command:
return binding->value.command;
case IBT_block:
return binding->value.block + cursorOffset;
case IBT_function:
return binding->value.function(brl);
case IBT_submode: {
setInputMode(binding->value.submode);
break;
}
default:
logMessage(LOG_WARNING, "unhandled input binding type: %02X", binding->type);
break;
}
return BRL_CMD_NOOP;
}
void resetEnvironment() {
resetInputMode();
enableRepeatAndCursor();
resetConsole();
}
