Transmits a specified character ahead of any pending data in the output buffer of the specified communications device.
- Parameters
-
Ch | The character to be transmitted. |
- Returns
- If the function succeed the return value is WCL_E_SUCCESS. Otherwise the method returns one of the WCL error codes.
The TransmitCommChar
function is useful for sending an interrupt character (such as a CTRL+C) to a host system.
If the device is not transmitting, TransmitCommChar
cannot be called repeatedly. Once TransmitCommChar
places a character in the output buffer, the character must be transmitted before the function can be called again. If the previous character has not yet been sent, TransmitCommChar
returns an error.