2022-07-01 22:23:35 +02:00
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Adafruit Feather RP2040
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=======================
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The Feather RP2040 is a general purpose RP2040 board supplied by
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Adafruit.
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.. figure:: Feather.png
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:align: center
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Features
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========
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* RP2040 microcontroller chip
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* Dual-core ARM Cortex M0+ processor, flexible clock running up to 133 MHz
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* 264kB of SRAM, and 8MB of on-board Flash memory
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* Castellated module allows soldering direct to carrier boards
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* USB Host and Device support via type C connector.
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* Low-power sleep and dormant modes
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* Drag & drop programming using mass storage over USB
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* 26 multi-function GPIO pins
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* 2× SPI, 2× I2C, 2× UART, 3× 12-bit ADC, 16× controllable PWM channels
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* Accurate clock and timer on-chip
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* Temperature sensor
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* Accelerated floating point libraries on-chip
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* 8 × Programmable IO (PIO) state machines for custom peripheral support
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* LiPoly Battery connector
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Serial Console
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==============
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By default a serial console appears on pins 14 (RX GPIO0) and pin 15
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(TX GPIO1). This console runs a 115200-8N1.
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The board can be configured to use the USB connection as the serial console.
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Buttons and LEDs
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================
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User LED controlled by GPIO13.
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A ws2812 (NeoPixel) smart RGB LED controlled by GPIO16.
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An LED (CHG LED) that indicates the charging status of
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connected LiPo cell.
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There is a BOOT button which if held down when power is first
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applied or the RESET button is pressed will cause the RP2040 to
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boot into program mode and appear as a storage device to
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a USB connecte . Saving a .UF2 file to this device will
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replace the Flash ROM contents on the RP2040.
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A RESET button that allows rebooting the board without disconnecting
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the power.
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Pin Mapping
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===========
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2022-07-22 03:04:05 +02:00
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Pads numbered anticlockwise from USB connector.
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2022-07-01 22:23:35 +02:00
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===== ========== ==========
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2022-07-22 03:04:05 +02:00
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Pad Signal Notes
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2022-07-01 22:23:35 +02:00
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===== ========== ==========
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1 Reset Pull to ground to reset the RP2040 processor.
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2 3.3V Power out to peripherals.
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3 3.3V Power out to peripherals.
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4 Ground
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5 GPIO26 ADC0
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6 GPIO27 ADC1
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7 GPIO28 ADC2
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8 GPIO29 ADC3
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9 GPIO24
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10 GPIO25
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11 GPIO18
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12 GPIO19
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13 GPIO20
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14 GPIO1 Default RX for UART1 serial console
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15 GPIO0 Default TX for UART0 serial console
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16 GPIO6
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17 GPIO2
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18 GPIO3
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19 GPIO7
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20 GPIO8
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21 GPIO9
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22 GPIO10
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23 GPIO11
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24 GPIO12
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25 GPIO13
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26 VBUS Connected to USB +5V
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27 EN Pull to ground to turn off 3.3V regulator.
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28 VBAT Connected to LiPo battery 3.3V.
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===== ========== ==========
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The board has a STEMMA QT connector that is also connected to
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pins GPIO2 (I2C1 SDA) and GPIO3 (I2C1 SDA).
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The board has a two pin JST PH socket that accepts a single 3.3V
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LiPo cell. The cell connected to this port can be charged by
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connecting the board to a USB power supply.
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There are solder pads on the board that allow the addition of
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a 10-pin serial debug (SWD) connector.
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Power Supply
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============
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The Raspberry Pi Pico can be powered via the USB connector,
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or by supplying +5V to pin 39. The board had a diode that prevents
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power from pin 39 from flowing back to the USB socket, although
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the socket can be power via pin 30.
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The Raspberry Pi Pico chip run on 3.3 volts. This is supplied
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by an onboard voltage regulator. This regulator can be disabled
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by pulling pin 37 to ground.
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The regulator can run in two modes. By default the regulator runs
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in PFM mode which provides the best efficiency, but may be
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switched to PWM mode for improved ripple by outputting a one
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on GPIO23.
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Configurations
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==============
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audiopack
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---------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with
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support for NSPlayer audio player.
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composite
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---------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
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CDC/ACM with MSC USB composite driver.
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displaypack
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-----------
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NuttShell configuration (console enabled in USB Port, at 115200 bps) supporting
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ST7789 video display.
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enc28j60
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--------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
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NC28J60.
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lcd1602
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-------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
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LCD1602.
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nsh
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---
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Basic NuttShell configuration (console enabled in UART0, at 115200 bps).
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2022-09-05 20:34:58 +02:00
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nsh-flash
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---------
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Basic NuttShell configuration (console enabled in UART0, at 115200 bps
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with SMART flash filesystem.
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2022-07-01 22:23:35 +02:00
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nshsram
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-------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with interrupt
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vectors in RAM.
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smp
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---
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Basic NuttShell configuration (console enabled in UART0, at 115200 bps) with
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both ARM cores enabled.
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spisd
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-----
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NuttShell configuration (console enabled in UART0, at 115200 bps) with SPI configured.
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ssd1306
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-------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
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ssd1306.
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st7735
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------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
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st7735.
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usbmsc
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------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
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usbmsc.
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usbnsh
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------
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Basic NuttShell configuration (console enabled in USB Port, at 115200 bps).
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waveshare-lcd-1.14
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------------------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
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st7789.
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waveshare-lcd-1.3
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-----------------
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NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
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usbmsc.
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