nuttx/Documentation/platforms/arm/rp2040/boards/pimoroni-tiny2040/index.rst

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=================
Pimoroni Tiny2040
=================
The Tiny2040 is a general purpose RP2040 board supplied by Pimoroni.
.. figure:: Tiny2040.png
:align: center
Features
========
* RP2040 microcontroller chip
* Dual-core ARM Cortex M0+ processor, flexible clock running up to 133 MHz
* 264kB of SRAM, and 2MB or 8MB of on-board Flash memory
* Castellated module allows soldering direct to carrier boards
* USB Host and Device support via type C connector
* Low-power sleep and dormant modes
* Drag & drop programming using mass storage over USB
* 12 multi-function GPIO pins
* 2× SPI, 2× I2C, 2× UART, 3× 12-bit ADC, 16× controllable PWM channels
* Accurate clock and timer on-chip
* Temperature sensor
* Accelerated floating point libraries on-chip
* 8 × Programmable IO (PIO) state machines for custom peripheral support
Serial Console
==============
By default a serial console appears on pins 15 (RX GPIO0) and
pin 16 (TX GPIO1). This console runs a 115200-8N1.
The board can be configured to use the USB connection as the serial console.
Buttons and LEDs
================
There is a single onboard RGB LED controlled by pins
GPIO18 (red), GPIO19 (green), and GPIO20 (blue).
The is a User/BOOT button readable as GPIO23. If held down when power
is first applied the RP2040 will boot into program mode and appear to
a computer connected via USB as a storage device. Saving
a .UF2 file to this device will replace the Flash ROM contents
on the RP2040.
Pin Mapping
===========
Pads numbered anticlockwise from USB connector.
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===== ========== ==========
Pad Signal Notes
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===== ========== ==========
1 VBUS Connected to USB +5V
2 Ground
3 3V3 Out to peripherals
4 GPIO29 ADC3
5 GPIO28 ADC2
6 GPIO27 ADC1
7 GPIO26 ADC0
8 Ground
9 GPIO7
10 GPIO6
11 GPIO5
12 GPIO4
13 GPIO3
14 GPIO2
15 GPIO1 Default RX for UART0 serial console
16 GPIO0 Default TX for UART0 serial console
===== ========== ==========
Power Supply
============
The Raspberry Pi Pico can be powered via the USB connector,
or by supplying +5V to pin 1.
The Raspberry Pi Pico chip run on 3.3 volts. This is supplied
by an onboard voltage regulator.
Configurations
==============
composite
---------
NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
CDC/ACM with MSC USB composite driver.
gpio
--------
NuttShell configuration (console enabled in UART0, at 115200 bps) with GPIO examples.
nsh
---
Basic NuttShell configuration (console enabled in UART0, at 115200 bps).
nsh-flash
---------
Basic NuttShell configuration (console enabled in UART0, at 115200 bps
with SMART flash filesystem.
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nshsram
-------
NuttShell configuration (console enabled in UART0, at 115200 bps) with interrupt
vectors in RAM.
smp
---
Basic NuttShell configuration (console enabled in UART0, at 115200 bps) with
both ARM cores enabled.
spisd
-----
NuttShell configuration (console enabled in UART0, at 115200 bps) with SPI configured.
usbmsc
------
NuttShell configuration (console enabled in UART0, at 115200 bps) with support for
usbmsc.
usbnsh
------
Basic NuttShell configuration (console enabled in USB Port, at 115200 bps).
README.txt
==========
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.. include:: README.txt
:literal: