bool
KRT2Device::PutFrequency(char cmd,
RadioFrequency frequency,
const TCHAR *name,
OperationEnvironment &env)
{
if (frequency.IsDefined()) {
struct {
uint8_t start = STX;
uint8_t command;
uint8_t mhz;
uint8_t khz;
char station[MAX_NAME_LENGTH];
uint8_t checksum;
} msg;
msg.command = cmd;
msg.mhz = frequency.GetKiloHertz() / 1000;
msg.khz = (frequency.GetKiloHertz() % 1000) / 5;
GetStationName(msg.station, name);
msg.checksum = msg.mhz ^ msg.khz;
Send((uint8_t *) &msg, sizeof(msg), env);
return true;
}
return false;
}
bool
KRT2Device::ParseFrame(struct NMEAInfo &info)
{
bool result = false;
switch (input_buffer[1]) {
case 'A': // set volume, squelch, intercom-VOX
if (input_buffer[3] + input_buffer[4] == input_buffer[5]) {
received_squelch = true;
squelch = input_buffer[3];
vox = input_buffer[4];
info.settings.ProvideVolume(input_buffer[2] * 5 - 1, info.clock);
result = true;
}
break;
case 'U': // active frequency changed
case 'R': // standby frequency changed
{
char mhz = input_buffer[2];
char khz = input_buffer[3];
char crc = input_buffer[12];
if ((mhz ^ khz) == crc) {
RadioFrequency rf = DecodeFrequency(mhz, khz);
// TODO: store frequency in info
result = rf.IsDefined();
}
}
break;
case 'C':
// TODO: exchange stored active and passive frequency
default:
// ignore this frame
break;
}
return result;
}
