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Metro M4 Airlift Shield support #3172

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Merged
merged 2 commits into from
Dec 2, 2025
Merged

Metro M4 Airlift Shield support #3172

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79258d6
added metro m4 pins to passthrough
mikeysklar Nov 26, 2025
1dbf7c3
added UF2 image for M4+Airlift-Shield Passthru
mikeysklar Nov 26, 2025
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Binary file added Adafruit_ESP32_Arduino_Demos/SerialESPPassthrough/Metro M4 Airlift Shield Passthru.UF2
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8 changes: 8 additions & 0 deletions Adafruit_ESP32_Arduino_Demos/SerialESPPassthrough/SerialESPPassthrough.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -67,6 +67,14 @@ unsigned long baud = 115200;
#define SPIWIFI_ACK 7 // a.k.a BUSY or READY pin
#define ESP32_GPIO0 -1
#define NEOPIXEL_PIN 8
#elif defined(ADAFRUIT_METRO_M4_EXPRESS) || defined(ARDUINO_SAMD_METRO_M4)
#define SerialESP32 Serial1
#define SPIWIFI SPI
#define SPIWIFI_SS 10 // AirLift CS
#define ESP32_RESETN 5 // AirLift RESET
#define SPIWIFI_ACK 7 // AirLift BUSY / READY
#define ESP32_GPIO0 6 // AirLift GPIO0 (boot)
#define NEOPIXEL_PIN 40 // Metro M4 onboard NeoPixel
#elif !defined(SPIWIFI_SS) // if the wifi definition isnt in the board variant
// Don't change the names of these #define's! they match the variant ones
#define SerialESP32 Serial1
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