Enable IO20 on ESP32

Some newer ESP32 variants (like ESP32-PICO-V3 and ESP32-PICO-MINI-02) do implement this pin and it can be used as a normal GPIO. Fixes #6016 Fixes #6837 Closes #6918 (cherry picked from commit 6deaefd)
espressif · Aug 31, 2021 · f1a024e · f1a024e
1 parent 1e309a3
commit f1a024e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/components/soc/esp32/gpio_periph.c b/components/soc/esp32/gpio_periph.c
@@ -35,7 +35,7 @@ const uint32_t GPIO_PIN_MUX_REG[GPIO_PIN_COUNT] = {
     IO_MUX_GPIO17_REG,
     IO_MUX_GPIO18_REG,
     IO_MUX_GPIO19_REG,
-    0,
+    IO_MUX_GPIO20_REG, // This corresponding pin is only available on ESP32-PICO-V3 chip package
     IO_MUX_GPIO21_REG,
     IO_MUX_GPIO22_REG,
     IO_MUX_GPIO23_REG,