Hello Everybody,
I have a quick question about serial IO. I have a serial plotter
connected to my 200 and have been sending commands to it, but I haven't
been able to read responses back. I posed it here (only sending
commands):
https://pay.reddit.com/r/retrobattlestations/comments/i3ol8w/we_dont_get_enough_working_pen_plotters_here_so/
if you want to see it working.
This is the code for sending commands to the plotter:
5 F$ = "COM:88N1ENN"
10 OPEN F$ FOR OUTPUT AS 1
20 PRINT #1, "IN"
30 PRINT #1, "SV1"
40 PRINT #1, "EC"
50 PRINT #1, "AS4"
60 PRINT #1, "LB+0000+1050HELLO REDDIT"
70 PRINT #1, "LB+0000+0900/U/BiggRanger"
80 PRINT #1, "LB+0000+0750/August4,2020/"
I want to read responses back, I've tried closing the port and then
opening as "FOR INPUT", but that isn't working. I think it may be
clearing the input buffer when opening the port.
I want to create a subroutine the sends a command to check the status of
the plotter, receive the string back and parse it to see if the plotter
is busy and keep looping until it's not busy, or there is an error. I
just can't figuer out sending and receiving over serial with the 200.
Darren Clark
