Difference between revisions of "AdaFruit Ecosystem"
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# Tap reset button twice to enter UF2 (USB Flasher version 2) bootloader. A new drive shows up on your computer called boardnameBOOT, e.g., TRINKETBOOT | # Tap reset button twice to enter UF2 (USB Flasher version 2) bootloader. A new drive shows up on your computer called boardnameBOOT, e.g., TRINKETBOOT | ||
# Drag uf2 file into there and this will trigger board to reboot | # Drag uf2 file into there and this will trigger board to reboot | ||
| + | |||
| + | === CircuitPython Essentials tutorial === | ||
| + | |||
| + | ==== Analog Out ==== | ||
| + | * [https://learn.adafruit.com/circuitpython-essentials/circuitpython-analog-out link] | ||
| + | |||
| + | """CircuitPython Analog Out example""" | ||
| + | import board | ||
| + | from analogio import AnalogOut | ||
| + | |||
| + | analog_out = AnalogOut(board.A0) | ||
| + | |||
| + | while True: | ||
| + | # Count up from 0 to 65535, with 64 increment | ||
| + | # which ends up corresponding to the DAC's 10-bit range | ||
| + | for i in range(0, 65535, 64): | ||
| + | analog_out.value = i | ||
==Adafruit CircuitPython Library== | ==Adafruit CircuitPython Library== | ||
| Line 36: | Line 53: | ||
** Create a lib folder on your CIRCUITPY drive and copy the files into there manually. | ** Create a lib folder on your CIRCUITPY drive and copy the files into there manually. | ||
| − | == | + | == MicroPython/CircuitPython 3rd party libraries == |
| − | === | + | === ulab === |
| − | + | * ulab is a numpy-like array manipulation library for micropython and CircuitPython | |
| − | * | + | * [https://github.com/v923z/micropython-ulab ulab github] |
| − | + | * [https://micropython-ulab.readthedocs.io/ ulab docs] | |
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| − | * [https://github.com/ | ||
| − | * [https:// | ||
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==Adafruit IO== | ==Adafruit IO== | ||
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==Metro M4 Express== | ==Metro M4 Express== | ||
| + | * Cortex M4 core running at 120 MHz | ||
| + | * Floating point support with Cortex M4 DSP instructions | ||
| + | * 512 KB flash, 192 KB RAM | ||
| + | * 32-bit, 3.3V logic and power | ||
| + | * Dual 1 MSPS DAC (A0 and A1) | ||
| + | * Dual 1 MSPS ADC (8 analog pins) | ||
| + | * 6 x hardware SERCOM (I2C, SPI or UART) | ||
| + | * 22 x PWM outputs | ||
| + | * Stereo I2S input/output with MCK pin | ||
| + | * 10-bit Parallel capture controller (for camera/video in) | ||
| + | * Built in crypto engines with AES (256 bit), true RNG, Pubkey controller | ||
| + | * 64 QFN (Quad-flat no-leads) | ||
| + | |||
===Available UART Combos=== | ===Available UART Combos=== | ||
* [https://learn.adafruit.com/circuitpython-essentials/circuitpython-uart-serial Where's my UART code] | * [https://learn.adafruit.com/circuitpython-essentials/circuitpython-uart-serial Where's my UART code] | ||
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Latest revision as of 04:42, 11 February 2021
Contents
CircuitPython
Docs/Learning Resources
- CircuitPython 101 - Getting Started
- CircuitPython Essentials - After reading through the getting started matrial.
- CircuitPython ReadTheDocs - API. But why does it list core modules like gamepad in the docs but not in the help( "modules" ) list?
General
- ls /dev/tty.*
- screen /dev/tty.blahblah
- /lib is in sys.path by default
- help( "modules" )
- array.array - single types specified by typecode character at runtime
- collections.namedTuple - a fixed sized dict without the
- gc.mem_alloc() shows RAM used, gc.mem_free() shows memory available
- boot.py runs BEFORE USB is setup, outputs to boot_out.txt
- globals() to show what modules are loaded - can't unload modules
Installation
- Download latest version of circuitpython for the given board
- Tap reset button twice to enter UF2 (USB Flasher version 2) bootloader. A new drive shows up on your computer called boardnameBOOT, e.g., TRINKETBOOT
- Drag uf2 file into there and this will trigger board to reboot
CircuitPython Essentials tutorial
Analog Out
"""CircuitPython Analog Out example"""
import board
from analogio import AnalogOut
analog_out = AnalogOut(board.A0)
while True:
# Count up from 0 to 65535, with 64 increment
# which ends up corresponding to the DAC's 10-bit range
for i in range(0, 65535, 64):
analog_out.value = i
Adafruit CircuitPython Library
Bundle
- A bundle of useful CircuitPython libraries ready to use from the filesystem ONLY for use on boards that have extra flash storage.
- Github repo - download the latest. Contains precompiled .mpy files that your copy over to /lib
- Documentation - Includes SD card usage utility, etc
Individual Library Installation
- For smaller boards you must copy the libraries manually
- See CircuitPython Libraries for more info.
- Create a lib folder on your CIRCUITPY drive and copy the files into there manually.
MicroPython/CircuitPython 3rd party libraries
ulab
- ulab is a numpy-like array manipulation library for micropython and CircuitPython
- ulab github
- ulab docs
Adafruit IO
- A data logging service that you can hit from you IoT device
Trinket M0
Specs
- microchip - SAMD21 32-bit Cortex M0+
- CPU speed - 48MHz
- Program memory size - 256KB flash
- RAM - 32KB
- Builtin Green ON LED
- Builtin red LED on pin #13
- Builtin RGB DotStar LED
- 5 GPIO pins
Reference
Downloads
Metro M4 Express
- Cortex M4 core running at 120 MHz
- Floating point support with Cortex M4 DSP instructions
- 512 KB flash, 192 KB RAM
- 32-bit, 3.3V logic and power
- Dual 1 MSPS DAC (A0 and A1)
- Dual 1 MSPS ADC (8 analog pins)
- 6 x hardware SERCOM (I2C, SPI or UART)
- 22 x PWM outputs
- Stereo I2S input/output with MCK pin
- 10-bit Parallel capture controller (for camera/video in)
- Built in crypto engines with AES (256 bit), true RNG, Pubkey controller
- 64 QFN (Quad-flat no-leads)
