Re: [M100] RS232 IO BASIC question
You can have the COM port open for both input and output at the same time. I did a TPDD-ish experiment a while ago and wrote some BASIC programs to work with it. Example: https://github.com/rlauzon54/rdos/blob/master/Clients/RLIST.BA -- Weblog: http://ronsapartment.blogspot.com/ TRS-80 Pocket Computer 2 - TRS-80 Pocket Computer 4 - TRS-80 Model 100/102 - Tandy 1100FD - Tandy 1400LT - Commodore 64 - TRS-80 Model 4P RC2014 (Mini and Pro) - Altair-Duino with TI Silent 700 - VT320 terminal/Raspberry Pi 0 Some people like to work on old cars. But old computers are cheaper and don't require a big garage. Aug 5, 2020, 09:57 by biggran...@tds.net: > > 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++1050HELLO REDDIT" > 70 PRINT #1, "LB++0900/U/BiggRanger" > 80 PRINT #1, "LB++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 > > > > >
Re: [M100] RS232 IO BASIC question
Thank you very much! It's working now, I can ask for a status and receive the reply! Darren Clark On 8/5/20 10:36 AM, Ron Lauzon wrote: You can have the COM port open for both input and output at the same time. I did a TPDD-ish experiment a while ago and wrote some BASIC programs to work with it. Example: https://github.com/rlauzon54/rdos/blob/master/Clients/RLIST.BA -- Weblog: http://ronsapartment.blogspot.com/ TRS-80 Pocket Computer 2 - TRS-80 Pocket Computer 4 - TRS-80 Model 100/102 - Tandy 1100FD - Tandy 1400LT - Commodore 64 - TRS-80 Model 4P RC2014 (Mini and Pro) - Altair-Duino with TI Silent 700 - VT320 terminal/Raspberry Pi 0 Some people like to work on old cars. But old computers are cheaper and don't require a big garage. Aug 5, 2020, 09:57 by biggran...@tds.net: 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++1050HELLO REDDIT" 70 PRINT #1, "LB++0900/U/BiggRanger" 80 PRINT #1, "LB++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
[M100] RS232 IO BASIC question
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++1050HELLO REDDIT" 70 PRINT #1, "LB++0900/U/BiggRanger" 80 PRINT #1, "LB++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
