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Forum Index : Microcontroller and PC projects : Picomite Xmodem Failure
| Author | Message | ||||
| damos Regular Member  Joined: 15/04/2016 Location: AustraliaPosts: 63 |
I bought 10 of these and every one of them is failing using XMODEM: https://core-electronics.com.au/raspberry-pi-pico.html I tried both V5.08.00 and V5.09.00RC5 and they both fail on 4 devices I have tried. In the same order I purchased 5 Webmites and they work perfectly using Webmite firmware. When I install the firmware the BASIC interpreter seems to work fine. I have an 11k BASIC program the responds with: Error: Remote did not respond. On some Picos it tries to send the file but takes a long time then fails. If I try to receive a file (eg jpg) it will sometimes give the same error and sometimes display the XMODEM Send dialog in Tera Term which just hangs there for several minutes before failing. Is anyone else having these problems or do I just have a bad batch? |
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phil99 Guru  Joined: 11/02/2018 Location: AustraliaPosts: 2135 |
It is unlikely to be a hardware problem as you were able to load the firmware and your program, and it runs. I haven't used Xmodem within a program but at the console in both V5.08.00 and V5.09.00RC5 it works fine. Just tried xmodem receive "Auto Tx.bmp" then File -> Transfer -> Xmodem -> Send and it also worked on V5.09.00RC7 The mistake I usually make is having send or receive at both ends. That produces the result you are getting. |
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| damos Regular Member Joined: 15/04/2016 Location: AustraliaPosts: 63 |
Thanks. I was only using it on the console. I have also made that mistake (sometime tragically) when I accidentally selected receive after typing XMODEM RECEIVE only to overwrite the copy of the file. The firmware installs perfectly so I don't think the chips are faulty. At one point I was finding files <2k worked but nothing over. Now everything fails. I suspected faulty flash on the chip but will need to try to create files programmatically to confirm this. I am wondering if there is a timing issue and my chips aren't happy with it. |
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| damos Regular Member Joined: 15/04/2016 Location: AustraliaPosts: 63 |
Ok, I solved my own problem - my final line with "timing" caused me to think maybe others are overclocking. I changed by CPU SPEED to 378000 and it worked perfectly. |
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| okwatts Regular Member Joined: 27/09/2022 Location: CanadaPosts: 59 |
I have had problems in Linux using picocom with the sx addin on later versions of MMBasic but I believe about 5.07.04 it worked but by 5.07.07 it didn't, so something changed in the timing or something else. I haven't tried with win10/Teraterm in a while but I have never had issues with that. MMedit should work as well although I have never really mastered it on Linux. Normally I just either move to my Windows machine and xmmodem in Teraterm or load the programs to an Microsd and use them from there. |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6097 |
You need a line delay in TeraTerm. VK7JH MMedit MMBasic Help |
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