pez732 p.s. I always have to use three jumper cables from pins P8_45 and P8_46 to 3.3V (P9_03 and P9_04) and P8_44 to GND (P9_01) to boot Bela. Otherwise, it doesn't boot without them.
Quoting from here, with regard to what to do after you managed to boot with the three wires:
- If you have a Bela image on the eMMC and you want to keep using it in its current state: /opt/Bela/bela_bootloader.sh. This should restore functionality of the image on the eMMC, but if there is an SD card inserted, it will boot from the SD card.
- if you have a beagleboard.org image on the eMMC, or if you want to update the Bela image on the eMMC with the one that is on the SD card, then run /opt/Bela/bela_flash_emmc.sh. Note: this will delete the content of the eMMC, possibly causing data loss.
pez732 I don't need to use the bela cape for this project, but that makes me sceptical of whether the Bela and CTAG can work together from the same power
They surely do require a bit more current when used together, but the extra amount should be small enough (< 50mA I think), that I don't expect it to make a significant difference for many power supplies, and it never happened to me that this would cause trouble.
pez732 However, when I put the CTAG on there is no audio coming out.
What do you mean here? Is there no audio coming out from the CTAG cape nor from the Bela cape? Do you get any error on screen? Does the LED labelled USR3 on the BeagleBone (next to the ethernet connector) blink at regular intervals? Just to clarify, it is expected that you will not get audio in/out from the Bela cape when a CTAG is installed. See here for more details.