TX MIC app - no audio

[aneitzel]

Describe the bug.

I used hackrf + portapack (MIC app) in the past for test transmissions which worked fine. Have Portapack with internal battery. Since i played around with mayhem v2.0 i now noticed, that there is no audio anymore then TX via MIC app. All other apps like soundboard etc. works fine. Also all other SDR stuff in HackRF mode.

Then i open MIC app and talk into connected MIC , the audio level vumeter -in the left part- is not moving at all

It definitively worked in the past / the only thing i remember was palcing around with latest mayhem, and nightly builds.
I also tested to flash back to a old version, no differenies... now back at latest nightly 24521.

Any idea what to check? My MICs i connected working on other devices (this was my 1. assumption).

Reproduction

switch on
open TX mic app (FMn, Frequency for example PMR K1, low pwr)
connect mic to headphone jack
activate "hear mic" > no VU meter activity at all
Also during TX, no audio via mic / HF signal unmodulated in test receiver

TX via soundboard app, audio is fine.

Expected behavior

level VU meter activity / audio from mic expected during TX

Environment/versions

No response

Anything else?

No response

[gullradriel]

If going back isn't fixing it, there is a good chance your jack is fucked up. Maybe some dirts inside or faulty solder/contact.
You can try following the factory reset procedure, but I don't think it's going to work.

[gullradriel]

Any news ?

[aneitzel]

Hi, i flashed around and also tried flash mayhem firmware new via DFU. Iam quite sure that this problem occured since flashing around for testing between hackRF original and portpack mayhem. Iam now at latest MAYHEM and everything works as normal, expect MIC TX.

What i not tested is deinstall the portapack from hackRF and flash it alone, but i assume that makes no difference at all?
Have no clue how to bring MIC TX back to live.

btw: i tested the socket and it has audio OUT to attached headphones as normal (in MIC TX app activate "RX audio")
Iam out of options actually. Is there something besides then BIN firmware with CPLD? Can i check CPLD version of my device?

[gullradriel]

You can check and flash using the hacked cpld command line tool.
There is a section in the wiki:
https://github.com/portapack-mayhem/mayhem-firmware/wiki/Updating-the-Xilinx-CPLD-on-hackrf-board

[gullradriel]

By the way you should read the Mic App wiki if not done, as it's talking about Mic settings.
https://github.com/portapack-mayhem/mayhem-firmware/wiki/Microphone-Transceiver