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pulkin / micropython

MicroPython implementation on Ai-Thinker GPRS module A9 (RDA8955)
https://micropython.org
MIT License
103 stars 30 forks source link

No response from REPL prompt over serial after 10-20 secs #100

Closed midasgossye closed 3 years ago

midasgossye commented 3 years ago

Hi,

I managed to update the firmware on the A9G board to he micropython port. After connecting a USB<->serial adapter on TX/RX1 I get the micropython prompt as expected. I am able to type in commands and get responses for 10-20 secs, but then it hangs and doesn't respond at all until I repower the board. No errors are thrown in the serial terminal before it becomes unresponsive.

One additional note: this doesn't seem to happen when the SIM card is not inserted.

Any help or thoughts on how to solve this problem would be very welcome, since I was really enjoying the micropython port on the A9G before this issue started to happen when I updated the firmware to the latest version on this github repo...

midasgossye commented 3 years ago

These are the events that the coolwatcher debug program shows when this happens, not sure if this is helpful but I'll include it below:

Detected event: 0xca1bc2c0.
Detected event: 0x9999a244.
Detected event: 0x77770006.
Detected event: 0xffffff03.
Detected event: 0xb0070000.
Detected event: 0x6c67f234.
Detected event: 0x89000000.
Detected event: 0x99009000.
Detected event: 0x89110001.
Detected event: 0x89110005.
Detected event: 0x8911116b.
Detected event: 0x89019000.
Detected event: 0x89110009.
Detected event: 0x8811556b.
Detected event: 0x89110005.
Detected event: 0x89111139.
Detected event: 0x89019000.
Detected event: 0x89110006.
Detected event: 0x89112239.
Detected event: 0x89300100.
Detected event: 0x8930064d.
Detected event: 0x89300568.
Detected event: 0x89300668.
Detected event: 0x89300542.
Detected event: 0x89300642.
Detected event: 0x89300557.
Detected event: 0x89300657.
Detected event: 0x89300544.
Detected event: 0x89300553.
Detected event: 0x89300507.
Detected event: 0x89300550.
Detected event: 0x89300548.
Detected event: 0x8930056b.
Detected event: 0x89300563.
Detected event: 0x8930053b.
Detected event: 0x89300594.
Detected event: 0x89300994.
Detected event: 0x89300597.
Detected event: 0x2244420b.
Detected event: 0x22446804.
Detected event: 0x23000042.
Detected event: 0x23000068.
Detected event: 0x22445c00.
Detected event: 0x22445d40.
Detected event: 0x23000061.
Detected event: 0x2300005d.
Detected event: 0x2300003b.
Detected event: 0x23000063.
Detected event: 0x2300008e.
Detected event: 0x23000062.
Detected event: 0x2300003f.
Detected event: 0x22445f09.
Detected event: 0x2300005f.
Detected event: 0x55000019.
Detected event: 0x1204aaaa.
Detected event: 0x00000001.
bokolob commented 3 years ago

Hi. check that power button is pulled correctly. I don’t remember exactly up or down, in any case it shuts down in short time without

midasgossye commented 3 years ago

Thanks for your suggestion. I added some extra capacitors to the power input (see this issue) and reflashed the firmware, and that seemed to do the trick. I'll defintely also check the power button pin to get it to run stabily.