xiao_nrf52: move Wire to NFC pins to unblock BLE pairing#2499
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Strykar wants to merge 1 commit intomeshcore-dev:devfrom
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xiao_nrf52: move Wire to NFC pins to unblock BLE pairing#2499Strykar wants to merge 1 commit intomeshcore-dev:devfrom
Strykar wants to merge 1 commit intomeshcore-dev:devfrom
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PIN_WIRE_SDA=D7/PIN_WIRE_SCL=D6 collide with PIN_SERIAL1_RX/TX defined in variant.h. Muxing Wire on those pads lets the BLE companion advertise briefly then go silent on the Wio-SX1262 for XIAO baseboard. Move Wire to the NFC pads (P0.30/P0.31, Arduino pins 30/31), matching what Meshtastic does for the same baseboard. Co-Authored-By: Claude Opus <noreply@anthropic.com>
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Problem
On
Xiao_nrf52*envs,PIN_WIRE_SDA=D7/PIN_WIRE_SCL=D6collide withPIN_SERIAL1_RX/TXdefined in variants/xiao_nrf52/variant.h:With
Wiremuxed onto the same pads, the BLE companion advertises briefly after boot and then stops. The MeshCore Android app intermittently fails to pair, and Serial output is unreliable.Fix
Move Wire to the NFC pads (P0.30 NFC1, P0.31 NFC2). The Adafruit BSP exposes them as Arduino pins 30/31 and they aren't claimed by another peripheral on this board. Same approach Meshtastic uses for the same baseboard (their
seeed_xiao_nrf52840_kit/variant.h).Diff
+5/-2 in
variants/xiao_nrf52/platformio.ini. No code changes.Tested
dev(currentmeshcore-dev/Adafruit_nRF52_Arduinofork) and onmainwith the stockframework-arduinoadafruitnrf52@1.10700.0— both work