a9e1b9fae5
Tag firmware (esp32/uwb_tag): - SSD1306 128x64 OLED: shows distance, anchor ranges, RSSI bars, link status - ESP-NOW broadcast: sends range/heartbeat/estop packets (20 bytes, peer-to-peer) - Emergency stop: GPIO 0 (BOOT), active LOW, 10Hz TX while held, 3x clear on release - Display updates at 5Hz, ranging still at 20Hz round-robin - Added Adafruit SSD1306 + GFX lib_deps to platformio.ini Anchor firmware (esp32/uwb_anchor): - ESP-NOW receiver: captures tag packets via ISR ring buffer - Forwards to Jetson serial as +ESPNOW: and +ESTOP: lines - E-STOP packets get priority immediate output - Zero impact on existing TWR ranging loop For Makerfabs ESP32 UWB Pro with Display (DW3000 chip).