serialCount

inp = serialCount ( [ integer OutBuffer =0 ] )

Use this function to get the number of characters waiting in the currently open serial port.

Parameters

OutBuffer

A boolean integer specifying whether the input or output buffer should be checked. Must be one of the following values:

FALSE=0 – returns the number of characters waiting in the receive buffer.

TRUE=0 – returns the number of characters waiting in the transmit buffer.

Default value: FALSE

Return value

The number of characters waiting in the specified buffer.

Error flags

ERR_OK

The flag set if successful.

ERR_FAILED

The flag set if failed.

ERR_NOTFOUND

No open port found.

Remark

To open and configure a serial port, use serialOpen.

Example

This set of statements counts characters in s a serial port until its receive buffer contains 5 characters, reads a string from the port and prints it in the terminal window:

serialOpen (1,"19200,N,8,1")

Do

val=serialCount()

Loop While val<5

Print serialRead()

serialClose()