Synopsis #

Header: fxcg/serial.h
Syscall index: 0x1BBC
Function signature: int Serial_WriteSingle(unsigned char x)

Sends a single byte through the 3-pin serial port, by putting it in the transmit buffer.

Parameters #

• x - byte to transmit.

Returns #

• 0 if successful,
• 2 if no space is available in the serial transmit buffer (which has a size of 256 bytes),
• 3 if the serial channel is not open.