davidbue
commented
4 years ago Greetings from Denmark,
I have just started my journey into the diyBMS V4 and while I am waiting for my pcbs to arrive I thought that I might as well take a shot at setting up the code on a Wemos D1 mini 4MB that I had laying about.
Initially I was stuck in the boot loop but the above fixed the issue for me. Now a new issue has come up. I can setup the SSID, and upon rebooting the Wemos seem to disappear completely. It does not join my home wifi, nor does it broadcast its own.
When trying to debug I cannot get the serial communication up running, so for good measure I completely erased the flash of the wemos and uploaded the code again. Now it boots up, broadcasting its own SSID, yet still I get no output at all on the serial port. I assume it has never done so.
Any proposals on how I get output on Serial1 to function? Else it's nearly impossible for me to debug any further and provide you guys with my findings.
Cheers, David
stuartpittaway
If you have an ESP8266 with only 4MB flash memory the controller will enter a loop when configuring the wifi setup - it appears like the password isn't stored (its not!) so the controller attempts to go into a setup loop.
The recommended ESP8266 is the D1 Mini Pro - this has 16MB Flash by default.
buy from here https://amzn.to/2OF7Mzn
To make DIYBMS work on 4MB flash - change the option in platformio.ini
to
Note that future versions of the controller code may require larger flash sizes to store other information, historic logging etc.