1. ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
  2. ZBI Commands
  3. DATAREADY
  • ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
DATAREADY

DATAREADY

This function is used to determine if there is data received on a specified port.
Format
DATAREADY (A)
Parameters
A = the port to check
Returns
1 if there is data, 0 if there is no data.
Example
This is an example of how to check if there is a data on a port:
10 PRINT DATAREADY(0) 
RUN
The result, assuming no data is waiting, is:
0
Comments
If this command follows the
INPUT
 command, it may return 1 if the line received was ended with a CRLF. In this case,
INBYTE
 can be used to take the LF out of the buffer.