firmware: migrate cargo controller to LilyGO T-Relay S3

2026-06-29 22:57:02 -06:00
parent 406033bec8
commit 4cbd2165b2
10 changed files with 127 additions and 95 deletions
@@ -213,3 +213,13 @@ Rationale:
 - Improves perceived responsiveness without a major communication rewrite.
 - Supports future live gauges better than fixed-interval polling.

+
+
+## LilyGO T-Relay-S3 6-relay migration
+
+- [x] Expand cargo relay model from 2 outputs to 6 outputs.
+- [x] Replace direct GPIO relay writes with LilyGO 74HC595 shift-register writes.
+- [x] Map relay_1 through relay_6 to CH1 through CH6.
+- [x] Move DS18B20 OneWire default from GPIO4 to GPIO14 because GPIO4 is relay nOE.
+- [ ] Bench test relay boot behavior with no vehicle loads connected.
+- [ ] Confirm CH1-CH6 order with a meter or test lamp before wiring vehicle loads.