static int
writeSerialBraille (BrailleDisplay *brl, const unsigned char *cells, unsigned char count, unsigned char start) {
unsigned char buffer[2 + count];
unsigned char size = 0;
buffer[size++] = start;
buffer[size++] = count;
memcpy(&buffer[size], cells, count);
size += count;
return writeSerialPacket(brl, 0X42, buffer, size);
}
static int
getSerialDisplayCurrent (BrailleDisplay *brl, unsigned char *current) {
const unsigned int code = 0X43;
if (writeSerialPacket(brl, code, NULL, 0)) {
unsigned char buffer[2];
if (nextSerialPacket(brl, code, buffer, sizeof(buffer), 1)) {
*current = buffer[1];
return 1;
}
}
return 0;
}
static int
getSerialDisplayVoltage (BrailleDisplay *brl, unsigned char *voltage) {
const unsigned char code = 0X47;
if (writeSerialPacket(brl, code, NULL, 0)) {
unsigned char buffer[2];
if (nextSerialPacket(brl, code, buffer, sizeof(buffer), 1)) {
*voltage = buffer[1];
return 1;
}
}
return 0;
}
static int
logSerialFirmwareVersion (BrailleDisplay *brl) {
unsigned char device;
for (device=0; device<ARRAY_COUNT(serialDeviceNames); ++device) {
const unsigned char code = 0X46;
unsigned char buffer[5];
if (!writeSerialPacket(brl, code, &device, 1)) return 0;
if (!nextSerialPacket(brl, code, buffer, sizeof(buffer), 1)) return 0;
logMessage(LOG_INFO, "%s Firmware Version: %c.%c.%c",
serialDeviceNames[buffer[1]],
buffer[2], buffer[3], buffer[4]);
}
return 1;
}
static int
logSerialSerialNumber (BrailleDisplay *brl) {
unsigned char device;
for (device=0; device<ARRAY_COUNT(serialDeviceNames); ++device) {
const unsigned char code = 0X53;
unsigned char buffer[10];
if (!writeSerialPacket(brl, code, &device, 1)) return 0;
if (!nextSerialPacket(brl, code, buffer, sizeof(buffer), 1)) return 0;
logMessage(LOG_INFO, "%s Serial Number: %02X%02X%02X%02X%02X%02X%02X%02X",
serialDeviceNames[buffer[1]],
buffer[2], buffer[3], buffer[4], buffer[5],
buffer[6], buffer[7], buffer[8], buffer[9]);
}
return 1;
}
void testUsingDeviceFile(const char* deviceFile) {
printf("Testing communications using device-file %s\n", deviceFile);
int fd = configuredDescriptor(deviceFile);
FRGarminPacketRef requestInfo = FRGarminPacketCreateFromData(Pid_Product_Rqst, NULL, 0);
writeSerialPacket(fd, requestInfo, 1);
FRGarminPacketRef ackPacket = readSerialPacket(fd);
printf("Response packet: %s\n", ackPacket->typeID == FR_ACK ? "Acknowledged." : "NotACK!");
FRGarminPacketDestroy(ackPacket);
FRGarminPacketRef infoPacket = readSerialPacket(fd);
printf("Received %i bytes in infoPacket\n", (int)infoPacket->dataSize);
printf("Device ID: %s\n", infoPacket->data+4);
FRGarminPacketDestroy(ackPacket);
finishDescriptor(fd);
}
static int
soundSerialBeep (BrailleDisplay *brl, unsigned char duration) {
return writeSerialPacket(brl, 0X41, &duration, 1);
}
static int
setSerialDisplayState (BrailleDisplay *brl, unsigned char state) {
return writeSerialPacket(brl, 0X44, &state, 1);
}
static int
setSerialDisplayVoltage (BrailleDisplay *brl, unsigned char voltage) {
return writeSerialPacket(brl, 0X56, &voltage, 1);
}
