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| WiFi AP disappears after a while https://www.8devices.com/community/viewtopic.php?f=13&t=974 |
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| Author: | 0x4C4A [ 07 Nov 2016, 11:17 ] |
| Post subject: | WiFi AP disappears after a while |
| Author: | gedass [ 07 Nov 2016, 11:24 ] |
| Post subject: | Re: WiFi AP disappears after a while |
Hi, do you use original firmware dedicated to Carambola2 ? |
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| Author: | 0x4C4A [ 07 Nov 2016, 14:55 ] |
| Post subject: | Re: WiFi AP disappears after a while |
Yes, with some customizations - I've added an I2C RTC, EEPROM and 2 SPI devices to the board file, but that's pretty much it. Maybe you could point me to some specific logs I should check or debug programs to run? I don't expect anyone to debug this for me, just point me to the best places and methods to debug this kind of glitch. |
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| Author: | gedass [ 07 Nov 2016, 15:02 ] |
| Post subject: | Re: WiFi AP disappears after a while |
Try to post your issue here: https://github.com/8devices/carambola2/issues or try different firmware image (version) from: http://pkg.8devices.com/?dir=carambola2/ It seems to me like your rf local oscilator in wrong position and RF calibrating partition distorted. |
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| Author: | 0x4C4A [ 07 Nov 2016, 15:18 ] |
| Post subject: | Re: WiFi AP disappears after a while |
The RF calibration partition isn't overwritten by a FW update, right? So if it's broken, this wouldn't get fixed by a simple reflash to a stock firmware? I had a few experiments where I flashed the firmware while an SD card was attached to the device and due to faulty settings in the board file, the firmware got corrupted while being copied. I suspect that the SD card fiasco might've corrupted the RF calibration too. Would dumping it help to check it's validity? Is there any non-optimal-but-working RF cal. image available? Thanks a bunch for the pointers! |
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| Author: | gedass [ 07 Nov 2016, 15:27 ] |
| Post subject: | Re: WiFi AP disappears after a while |
| Author: | gedass [ 08 Nov 2016, 07:18 ] |
| Post subject: | Re: WiFi AP disappears after a while |
Try to change WiFi channel. |
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| Author: | 0x4C4A [ 15 Nov 2016, 10:02 ] |
| Post subject: | Re: WiFi AP disappears after a while |
Changed channel from 11 to 1 and now it seems to stay up. Additionally, other correctly flashed modules seem to not have the same behaviour. It seems that truly a borked calibration partition was to blame. I'll be sure to post again if something breaks again though. |
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