diff options
Diffstat (limited to 'docs/esp32')
| -rw-r--r-- | docs/esp32/quickref.rst | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/docs/esp32/quickref.rst b/docs/esp32/quickref.rst index 1529c0ef49..03ca97c7a7 100644 --- a/docs/esp32/quickref.rst +++ b/docs/esp32/quickref.rst @@ -216,9 +216,10 @@ They each have default GPIO assigned to them, however depending on your ESP32 variant and board, these pins may conflict with embedded flash, onboard PSRAM or peripherals. -Any GPIO can be used for hardware UARTs using the GPIO matrix, so to avoid -conflicts simply provide ``tx`` and ``rx`` pins when constructing. The default -pins listed below. +Any GPIO can be used for hardware UARTs using the GPIO matrix, except for +input-only pins 34-39 that can be used as ``rx``. To avoid conflicts simply +provide ``tx`` and ``rx`` pins when constructing. The default pins listed +below. ===== ===== ===== ===== \ UART0 UART1 UART2 |