The calculated "open sensor" temperature on the MPP 2420 LC is around -32.5 and not below -50 as required for
to do its magic. Was working with old firmware from 2019. Could not see the difference in the code easily, looks to me more or less identical, hence raising the issue here. I personally solved the problem by entirely disabling the sensor via an mppt_2420_lc.overlay file in the app directory:
/*
* Copyright (c) The Libre Solar Project Contributors
*
* SPDX-License-Identifier: Apache-2.0
*/
/ {
pcb {
version-str = "v0.10";
version-num = <10>;
};
adc-inputs {
// /delete-node/ temp-bat;
};
};
but it would be nicer, if we get back the original automatic detection capability.
The calculated "open sensor" temperature on the MPP 2420 LC is around -32.5 and not below -50 as required for
charge-controller-firmware/app/src/daq.cpp
Line 251 in a56b0d0
to do its magic. Was working with old firmware from 2019. Could not see the difference in the code easily, looks to me more or less identical, hence raising the issue here. I personally solved the problem by entirely disabling the sensor via an
mppt_2420_lc.overlayfile in the app directory:but it would be nicer, if we get back the original automatic detection capability.