My experience with PIC chips has taught me that "not enough power" during the burn/flash/programming time will give significantly inconsistent results. Your problem is sounding more like that since you've basically done it on two IOIOs and not a procedural problem like I faced. At the time of updating the firmware there was insufficient power applied or the IOIO was in H instead of A - these are my theories. I would encourage you to re-update and/or roll back to a prior versionsV0330. fwiw I used a 9V battery and it did not last long powering the IOIO OTG or for that matter any PIC chips from my projects I used prior during the flasing process. I dropped it quickly and found a usb power supply terminated pins on it and connected the IOIO. My plug runs 5V DC @ 2A. Try updating again verifying all power needs. I am going way out on a limb for this IOIO OTG PIC model but I know my other PICs require 12+ Volt minimum to achieve a good flashing, the PC's USB will provide some power, but is likely needing to be supplemented with external. Again stating this from experience and not looking at the IOIO's PIC's specifications/requirements.
On 9/21/2014 2:12 PM, AF wrote:
black7, Both boards are showing inconsistent behaviour. I only managed once to show the app firmware on ioiodude for one of the boards (don't know why it worked that time, the procedure was the same for both boards). Now I can't show it for both boards and one of them sometimes works with my smartphone other times doesn't. The other one doesn't work at all. This makes no sense I know... And about upgrading the firmware with the external power supply: that's what I was trying to say on the first post, it is highly probable that I've done that and also with H position on switch... I can't remember but I think I've done it. At first the COM ports only appeared in H position. And when in A position they appeared as unknown devices. Now after I did all those tries and procedures I managed to make them recognized as COM ports in both H or A positions.
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