I need a serial input on RX (pin 37) and output to TX (pin 36) just like "INPUT" and "PRINT" works on the USB port 0. I have tried the below code but it just falls thru with out any string or characters being received. The input to serinp$ could come at any time.
command$ = "" ' null command variable
serinit 1,9600,8,1,0 ' Init port
.
.
command$ = serinp$(1,20,13,1) ' Input string with max characters = 20, stop on CR, ?
error = serout(1,command$)
.
.
Now test for valid command. ' It never gets a valid command or any character, just falls thru the serinp$.
end
Is there something wrong with what I'm expecting from the code or how it is being used? I believe that signals are being sent into the hardware pin 36.
Phil
Problem with serinp$
Re: Problem with serinp$
Hi
You seem to have an awfully short time set for the 'timeout' parameter. The syntax is <instring>=SERINP$(<port #>,<numchars>,<endchar>,<timeout>) and a value of 50000 for timeout will have the function pause for a second waiting for the character. Try using command$ = serinp$(1,20,13,1000000) and see if you have the desired behavior.
Since you say that the input may come at any time, you would normally use a smaller value for 'timeout' and then the function will return the characters allready in the buffer. You would then need to process the buffer to detect the 'CR'.
Daniel
You seem to have an awfully short time set for the 'timeout' parameter. The syntax is <instring>=SERINP$(<port #>,<numchars>,<endchar>,<timeout>) and a value of 50000 for timeout will have the function pause for a second waiting for the character. Try using command$ = serinp$(1,20,13,1000000) and see if you have the desired behavior.
Since you say that the input may come at any time, you would normally use a smaller value for 'timeout' and then the function will return the characters allready in the buffer. You would then need to process the buffer to detect the 'CR'.
Daniel