Peek if next byte is available. Returns the next byte available in the receive buffer, without removing it from the buffer.
|port ||port number index: 0=UART1 ... 5=UART6, see FOSSIL_PORT|
- -1 = if no data is available in receive buffer, else next character in the received buffer
- SC2x3 V1.00 - CLIB V1.00
- See also:
- fossil_getbyte_wait() fossil_readblock()