hardware: retire dashboard uart and assign oled pins

2026-06-08 09:03:24 -06:00
parent 46d52052e3
commit 75c1d4d909
10 changed files with 165 additions and 10 deletions
@@ -129,3 +129,20 @@ Update this document when any of these change:
 - Hardware assumptions, wiring, power, relay, CAN, or dashboard target.
 - Validation commands, dependencies, or current test status.
 - Important decisions that a future assistant should not rediscover from scratch.
+
+
+## Current communications and GPIO decision
+
+Active dashboard communication is WiFi/HTTP using `/api/v1`.
+
+The old Pico/dashboard UART path is retired from active hardware use. USB Serial remains available for development, debug, and manual configuration from a computer.
+
+Current Cargo ESP32 GPIO plan:
+
+- GPIO 16: Relay 1 trigger output
+- GPIO 17: Relay 2 trigger output
+- GPIO 4: DS18B20 OneWire temperature bus
+- GPIO 34: Ignition sense input
+- GPIO 21: SSD1306 OLED I2C SDA
+- GPIO 22: SSD1306 OLED I2C SCL
+- GPIO 25: OLED setup/status button