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[SOLVED] Midi settings missing and no external clock

mongrolmongrol
edited November 2015 in Troubleshooting
Hi all,
I'd like my LXR synced to my Midirex. In the settings menu I"ve set BPM to 0 but then I've noticed I'm missing some settings options, namely the Midi txf and rxf. My settings options goes like this;

bpm, ch, fet, flw, qnt, ss

That's it. I'm missing mrt, txf and rxf.

I assume this is why external sync isn't working.

Comments

  • brendanclarkebrendanclarke
    youre missing more than that. what firmware version is this? sounds like you might be on a very old one.
  • mongrolmongrol
    I was on the firmware linked in the assembly instructions. I've since upgraded to the latest one on github and the Midi and Trigger settings have appeared. I can now get clock over USB but still nothing over the Midi socket.
  • brendanclarkebrendanclarke
    do you get notes or any other data from the midi output? make sure 'txf' is set to 'all', or at least something with 'R' in it.
  • mongrolmongrol
    Done a bunch of testing tonight. Midi-out does indeed work perfectly.

    I've printed out the schematics and tested continuity in all points between the Midi-in jack and the ARM Cortex header. Everything checks out fine. Doing voltage tests when powered up and receiving I get 5 volts between pin 4 and the midi-in on the Cortex header. Interestingly I get a drop down to 0.74 volts after the 220ohm R3 where it hits the 6N138 on pins 2&3. Not sure if this is normal or not.

    I've tried older firmwares, including your own Brendan, but get hit by the OLED display bug so they aren't usable for testing.

    I don't know how I else I can test with a multimeter. I was suspicious of the display being mounted without tape under it but it doesn't appear that anythings shorted out there (I can lever it up a little and slide paper in).
  • mongrolmongrol
    SUCCESS! I've resoldered (reflow?) the joints of the midi-jack from the top underside, the 220 ohm and the diode and its come good!

    Also fixed my dodgy snare LED by doing the same thing. Win! Perfectly functioning LXR.

    :D
  • brendanclarkebrendanclarke
    Glad to hear things are working! Can you clarify - what is the 'oled display bug'? I use an oled display and have never seen a display-specific issue with my firmware. If there is something preventing it from working on certain displays, I'd sure like to know about it!
  • mongrolmongrol
    I was referring to the problem in this thread. I may not have described it correctly but I can't run anything earlier than v37 without getting a corrupted display on boot.
  • brendanclarkebrendanclarke
    edited November 2015
    ah! ok - I just rolled the .37 changes into my firmware mod. Let me know if that works for you!
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