186 lines
4.2 KiB
ReStructuredText
186 lines
4.2 KiB
ReStructuredText
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Adafruit KB2040 Key Boar
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========================
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The KB2040 Key Boar is a general purpose RP2040 board supplied by
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Adafruit.
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.. figure:: KB2040.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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* 18 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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* On-board STEMMA QT connector for quick I2C connection.
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Serial Console
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==============
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By default a serial console appears on pins 1 (TX GPIO0) and pin 2
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(RX 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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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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A ws2812 (NeoPixel) smart RGB LED controlled by GPIO17.
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Pin Mapping
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===========
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===== ========== ==========
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Pin Signal Notes
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===== ========== ==========
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1 D+ Alternate USB data connection.
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2 GPIO0 Default TX for UART0 serial console
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3 GPIO1 Default RX for UART1 serial console
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4 Ground
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5 Ground
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6 GPIO2
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7 GPIO3
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8 GPIO4
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9 GPIO5
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10 GPIO6
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11 GPIO7
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12 GPIO8
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13 GPIO9
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14 GPIO10
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15 GPIO19
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16 GPIO20
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17 GPIO18
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18 GPIO26 ADC0
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19 GPIO27 ADC1
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20 GPIO28 ADC2
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21 GPIO29 ADC3
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22 Ground
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23 Raw Connected to USB +5V line
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24 D- Alternate USB data connection.
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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 GPI12 (I2C1 SDA) and GPI13 (I2C1 SDA).
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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 23.
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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.
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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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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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