// Schedule the transmission of a message on the serial port at a
// given time and priority.
public void send(command_queue cq, ReadOnlySpan <byte> msg, ulong min_clock = 0, ulong req_clock = 0)
{
RawMessage qm = RawMessage.Create(msg);
qm.min_clock = min_clock;
qm.req_clock = req_clock;
send_batch(cq, new Span <RawMessage>(&qm, 1));
}
public void send_batch(command_queue cq, Span <RawMessage> msgs)
{
// Make sure min_clock is set in list and calculate total bytes
int len = 0;
for (int i = 0; i < msgs.Length; i++)
{
ref var msg = ref msgs[i];
if (msg.min_clock + (1L << 31) < msg.req_clock &&
msg.req_clock != BACKGROUND_PRIORITY_CLOCK)
{
msg.min_clock = msg.req_clock - (1L << 31);
}
len += msg.len;
}