size_t device::receive_data(std::vector<unsigned char>& data_buf,
int device_number,
int channel )
{
talk( device_number );
data_talk( channel );
size_t received = 0;
try
{
received = receive_from_bus(data_buf);
}
catch (raspbiec_error &e)
{
untalk();
throw;
}
untalk();
return received;
}
uint8 IEC::OutATN(uint8 byte)
{
received_cmd = sec_addr = 0; // Command is sent with secondary address
switch (byte & 0xf0) {
case ATN_LISTEN:
listening = true;
return listen(byte & 0x0f);
case ATN_UNLISTEN:
listening = false;
return unlisten();
case ATN_TALK:
listening = false;
return talk(byte & 0x0f);
case ATN_UNTALK:
listening = false;
return untalk();
}
return ST_TIMEOUT;
}
