| .. _arduino_uno_r4: |
| |
| Arduino UNO R4 |
| ############## |
| |
| Overview |
| ******** |
| |
| The Arduino UNO R4 Minima/WiFi is a development board featuring the Renesas RA4M1 SoC |
| in the Arduino form factor and is compatible with traditional Arduino. |
| |
| Hardware |
| ******** |
| |
| - Renesas RA4MA1 Processor (ARM Cortex-M4 at 48 MHz) |
| - 256 KiB flash memory and 32 KiB of RAM |
| - One user LEDs |
| - One reset button |
| - One WiFi Transceiver (Arduino UNO R4 WiFi only) |
| - One 12x8 LED Matrix (Arduino UNO R4 WiFi only) |
| - Built-in CMSIS-DAP debug adapter (Arduino UNO R4 WiFi only) |
| |
| Supported Features |
| ================== |
| |
| The Arduino UNO R4 Minima/Wifi board configuration supports the following |
| hardware features: |
| |
| +-----------+------------+------------------------------------------+ |
| | Interface | Controller | Driver/Component | |
| +===========+============+==========================================+ |
| | GPIO | on-chip | I/O ports | |
| +-----------+------------+------------------------------------------+ |
| | UART | on-chip | Serial ports | |
| +-----------+------------+------------------------------------------+ |
| |
| Programming and debugging |
| ************************* |
| |
| Debug adapter |
| ============= |
| |
| A debug adapter is required to flash and debug programs. |
| Arduino UNO R4 WiFi has a built-in debug adapter that |
| you can use for flashing and debugging. |
| |
| In the Arduino UNO R4 Minima case, You need to prepare |
| debug adapter separately. A 5V-compatible CMSIS-DAP adapter |
| adapts to this board. |
| |
| |
| Building & Flashing |
| =================== |
| |
| You can build and flash with ``west flash`` command (See |
| :ref:`build_an_application` and |
| :ref:`application_run` for more details). |
| |
| Here is an example for building and flashing the :zephyr:code-sample:`blinky` application. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/basic/blinky |
| :board: arduino_uno_r4_minima |
| :goals: build flash |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/basic/blinky |
| :board: arduino_uno_r4_wifi |
| :goals: build flash |
| |
| Debugging |
| ========= |
| |
| Debugging can be done with ``west debug`` command. |
| The following command is debugging the :zephyr:code-sample:`blinky` application. |
| Also, see the instructions specific to the debug server that you use. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/basic/blinky |
| :board: arduino_uno_r4_minima |
| :maybe-skip-config: |
| :goals: debug |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/basic/blinky |
| :board: arduino_uno_r4_wifi |
| :maybe-skip-config: |
| :goals: debug |
| |
| |
| Using pyOCD |
| ----------- |
| |
| Various debug adapters, including cmsis-dap probes, can debug the Arduino UNO R4 with pyOCD. |
| The default configuration uses the pyOCD for debugging. |
| You must install CMSIS-Pack when flashing or debugging Arduino UNO R4 Minima with pyOCD. |
| If not installed yet, execute the following command to install CMSIS-Pack for Arduino UNO R4. |
| |
| .. code-block:: console |
| |
| pyocd pack install r7fa4m1ab |
| |
| |
| Restoring Arduino Bootloader |
| ============================ |
| |
| If you corrupt the Arduino bootloader, you can restore it with the following command. |
| |
| .. code-block:: console |
| |
| wget https://raw.githubusercontent.com/arduino/ArduinoCore-renesas/main/bootloaders/UNO_R4/dfu_minima.hex |
| pyocd flash -e sector -a 0x0 -t r7fa4m1ab dfu_minima.hex |
| |
| .. code-block:: console |
| |
| wget https://raw.githubusercontent.com/arduino/ArduinoCore-renesas/main/bootloaders/UNO_R4/dfu_wifi.hex |
| pyocd flash -e sector -a 0x0 -t r7fa4m1ab dfu_wifi.hex |