/**
* Transmit serial data
* @param address The address to send the data to
* @param length Number of bytes in data to be sent
* @param maxLength Number of bytes allocated for
* the data array.
* @return 0 for success, nonzero for failure.
*/
char SerialTransmit(SerialData * s, byte address, byte length)
{
if (SerialTransferInProgress(s))
{
return -1;
}
if (s->Transmit == NULL)
{
return -2;
}
if (length > SERIAL_TRANSMIT_BUFFER_SIZE)
{
return -3;
}
s->transmit_address = address;
s->transmit_length = length;
s->transmit_data_ptr = s->transmit_data;
s->transmit_escaped_char = 0;
s->transmit_state = PROC_STATE_TRANSMIT_ADDRESS;
s->Transmit(s, START_BYTE);
return 0;
}
bool CommSendPacket(CommInterface * inf, CommPacket * pkt) {
unsigned char length = pkt->length;
if (SerialTransferInProgress(&inf->serData)) {
return false;
}
if (length > SERIAL_TRANSMIT_BUFFER_SIZE) // TODO: Dynamically size SerialProtocol.transmit_data so we don't have this mysterious 20 byte max packet size
length = SERIAL_TRANSMIT_BUFFER_SIZE;
memcpy((void*)inf->serData.transmit_data, (void*)pkt->data, length);
USART_TransmitMode(inf->port, true);
if (SerialTransmit(&inf->serData, pkt->target, length)==0) {
return true;
}
else {
sei();
return false;
}
}
bool CommTransmissionInProgress(CommInterface * inf) {
return SerialTransferInProgress(&inf->serData);
}
