I've got a custom RP2040 board, schematic attached.
It seems to run into an issue where, when powered by a battery, the processor enters some form of locked error state and the rp2040 does not communicate over USB or any other method. This happens at inconsistent times sometimes after just 10 minutes or so of running. When this happens, the reset button on RUN will not reset the chip, only fully removing power from all sources.
I can't figure out why it does this, but I was able to reproduce what seems like the same issue by popping the lithium cell in and out while it was feeding a repeated output over USB.
The ADP2108 is rated for 600mA and should not be anywhere near its limit, so I'm suspecting the MCP73831 battery charger.
I'm aware that it should not be supplying both battery charge and power to the system, this will be fixed in the next iteration. I don't see how this could cause such an issue though.
I'm a little bit lost on why this would be happening, so I'm turning to the internet for help. Any ideas would certainly be appreciated.
It seems to run into an issue where, when powered by a battery, the processor enters some form of locked error state and the rp2040 does not communicate over USB or any other method. This happens at inconsistent times sometimes after just 10 minutes or so of running. When this happens, the reset button on RUN will not reset the chip, only fully removing power from all sources.
I can't figure out why it does this, but I was able to reproduce what seems like the same issue by popping the lithium cell in and out while it was feeding a repeated output over USB.
The ADP2108 is rated for 600mA and should not be anywhere near its limit, so I'm suspecting the MCP73831 battery charger.
I'm aware that it should not be supplying both battery charge and power to the system, this will be fixed in the next iteration. I don't see how this could cause such an issue though.
I'm a little bit lost on why this would be happening, so I'm turning to the internet for help. Any ideas would certainly be appreciated.
Statistics: Posted by struts — Tue Jul 16, 2024 3:21 pm