CFSound-II Digital Audio SystemCopyright©1992-2006 by ACS, Sarasota, Florida 15 ALL RIGHTS RESERVEDRS-232 Serial Port ProtocolSound play-out may also be controlled via commands received via the serial port. The data format is2400 baud, 8 data bits and 1 stop bit. Sounds may be started, queued and stopped using a simple ASCIIprotocol: p <+/-/&/~/!> XX where:Up to 128 sounds may be queued. Sounds that are queued are played in succession in the order thatthey were queued only when no other sound is playing until the queue is exhausted or flushed. Note thatthis can occur at the end of the current background sound file before it repeats. A background or othersound that is playing may be stopped by issuing a p-00 serial command sequence to allowqueued sounds to be heard. The background sound will be resumed when the queue has emptied. = ASCII Start of Header character 01 16 (Ctrl-A)p = ASCII lower case letter p<+/-> = ASCII plus character + to start a sound, minuscharacter - to stop a sound<&/~/!> = ASCII ampersand character & to queue a sound, tildecharacter ~ to flush the queued sounds, exclamationcharacter ! to stop the current playing sound and flushthe queued soundsXX = ASCII two digit hexadecimal number XX 16 of the sound (01,02, . . . , 7E, 7F) = ASCII End of Text character 03 16 (Ctrl-C)
