| .. zephyr:board:: adafruit_kb2040 |
| |
| Overview |
| ******** |
| |
| The Adafruit KB2040 is a small, low-cost, versatile board from |
| Adafruit. It is equipped with an RP2040 SoC, an on-board RGB Neopixel, |
| a USB connector, and a STEMMA QT connector. The USB bootloader allows |
| it to be flashed without any adapter, in a drag-and-drop manner. |
| |
| Hardware |
| ******** |
| - Dual core Arm Cortex-M0+ processor running up to 133MHz |
| - 264KB on-chip SRAM |
| - 8MB on-board QSPI flash with XIP capabilities |
| - 18 GPIO pins |
| - 4 Analog inputs |
| - 1 UART peripherals |
| - 1 SPI controllers |
| - 2 I2C controllers (one via STEMMA QT connector) |
| - 16 PWM channels |
| - USB 1.1 controller (host/device) |
| - 8 Programmable I/O (PIO) for custom peripherals |
| - On-board RGB LED |
| - 1 Watchdog timer peripheral |
| |
| Supported Features |
| ================== |
| |
| .. zephyr:board-supported-hw:: |
| |
| Pin Mapping |
| =========== |
| |
| The peripherals of the RP2040 SoC can be routed to various pins on the board. |
| The configuration of these routes can be modified through DTS. Please refer to |
| the datasheet to see the possible routings for each peripheral. |
| |
| Default Zephyr Peripheral Mapping: |
| ---------------------------------- |
| |
| .. rst-class:: rst-columns |
| |
| - UART0_TX : P0 |
| - UART0_RX : P1 |
| - I2C1_SDA : P2 |
| - I2C1_SCL : P3 |
| - SPI0_RX : P20 |
| - SPI0_SCK : P18 |
| - SPI0_TX : P19 |
| |
| Programming and Debugging |
| ************************* |
| |
| .. zephyr:board-supported-runners:: |
| |
| Flashing |
| ======== |
| |
| Using UF2 |
| --------- |
| |
| Since it doesn't expose the SWD pins, you must flash the Adafruit KB2040 with |
| a UF2 file. By default, building an app for this board will generate a |
| :file:`build/zephyr/zephyr.uf2` file. If the KB2040 is powered on with the ``BOOTSEL`` |
| button pressed, it will appear on the host as a mass storage device. The |
| UF2 file should be drag-and-dropped to the device, which will flash the KB2040. |
| |
| .. target-notes:: |
| |
| .. _Getting Started with Raspberry Pi Pico: |
| https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf |
| |
| .. _Primary Guide\: Adafruit KB2040: |
| https://learn.adafruit.com/adafruit-kb2040 |
