unsigned ctl_byte_queue_receive(CTL_BYTE_QUEUE_t *q, unsigned char *b, CTL_TIMEOUT_t t, CTL_TIME_t timeout);
ctl_byte_queue_receive pops the oldest byte in the byte queue pointed to by q into the memory pointed to by b. ctl_byte_queue_receive will block if no bytes are available unless timeoutType is non-zero and the current time reaches the timeout value.
ctl_byte_queue_receive returns zero if a timeout occurs otherwise 1.
ctl_byte_queue_receive must not be called from an interrupt service routine.