<![CDATA[M5Stack Fire Pin Mapping]]>To help other M5Stack Fire players, here I attached the Pin Mapping of Fire.

0_1561272244068_05971879-d34e-40f1-9080-08db542013c2-image.png

So... if you use PSRAM, Port C(UART) will be unavailable. If you need UART anyway, you can map UART to GPIOs of Port B.

s = machine.UART(2, tx=26, rx=36)

GPIO 36 is INPUT ONLY, so rx has to be 36.

refer to: https://blog.csdn.net/zhufu86/article/details/93379087 (Chinese language)

]]>https://community.m5stack.com/topic/1103/m5stack-fire-pin-mappingRSS for NodeWed, 11 Mar 2026 04:02:14 GMTSun, 23 Jun 2019 06:48:36 GMT60