digiSpark

• • All pins can be used as Digital I/O

  • Pin 0 → I2C SDA, PWM (LED on Model B)

  • Pin 1 → PWM (LED on Model A)

  • Pin 2 → I2C SCK, Analog In

  • Pin 3 → Analog In (also used for USB+ when USB is in use)

  • Pin 4 → PWM, Analog (also used for USB- when USB is in use)

  • Pin 5 → Analog In

• Sometimes P5 will be configured as RESET. To fix this follow this guide to refuse RESET as IO

  • http://thetoivonen.blogspot.com/2015/12/fixing-pin-p5-or-6-on-digispark-clones.html

  • Which boils down to:

    • • sudo avrdude -P usb -c usbasp -p attiny85 -n

      • sudo avrdude -P usb -c usbasp -p attiny85 -U hfuse:w:0x5F:m

Install:

• • Using arduino IDE (or arduino-cli) on a PC, you should use the boardmanager

    • http://digistump.com/package_digistump_index.json

  • Install

    • apt-get install lib32stdc++6

• Make a fix for platform.txt

## Create hex

recipe.objcopy.hex.pattern="{compiler.path}{compiler.elf2hex.cmd}" {compiler.elf2hex.flags} "{build.path}/{build.project_name}.elf" " {build.path}/{build.project_name}.hex"

+ ## Save hex

+ recipe.output.tmp_file={build.project_name}.hex

+ recipe.output.save_file={build.path}/{build.project_name}.{build.variant}.hex

+

## Compute size

recipe.size.pattern="{compiler.path}{compiler.size.cmd}" -A "{build.path}/{build.project_name}.elf"

recipe.size.regex=^(?:\.text|\.data|\.bootloader)\s+([0-9]+).*

• Add udev rule (in file '/etc/udev/rules.d/49-micronucleus.rules') and restart with sudo udevadm control --reload-rules

# UDEV Rules for Micronucleus boards including the Digispark.

# This file must be placed at:

#

# /etc/udev/rules.d/49-micronucleus.rules (preferred location)

# or

# /lib/udev/rules.d/49-micronucleus.rules (req'd on some broken systems)

#

# After this file is copied, physically unplug and reconnect the board.

#

SUBSYSTEMS=="usb", ATTRS{idVendor}=="16d0", ATTRS{idProduct}=="0753", MODE:="0666"

KERNEL=="ttyACM*", ATTRS{idVendor}=="16d0", ATTRS{idProduct}=="0753", MODE:="0666", ENV{ID_MM_DEVICE_IGNORE}="1"

#

# If you share your linux system with other users, or just don't like the

# idea of write permission for everybody, you can replace MODE:="0666" with

# OWNER:="yourusername" to create the device owned by you, or with

# GROUP:="somegroupname" and mange access using standard unix groups.

Using:

arduino-cli compile -b digistump:avr:digispark-tiny ~/Arduino/MyScript

arduino-cli upload -p zzz -b digistump:avr:digispark-tiny ~/Arduino/MyScript