Arduino MKR-WIFI-1010 Playground

Table of Contents

• Pre-commit hooks
• Requirements
• Flashing and Running
• Arduino burning bootloader

Pre-commit hooks

sudo apt install pre-commit

After cloning this repository for the first time, change into it and execute

pre-commit install

Pre-commit hooks are then executed on each commit according to the .pre-commit-config.yaml. You can force an offline run by calling

pre-commit run --all-files

Requirements

Install the toolchain:

rustup target add thumbv6m-none-eabi

Install probe-rs:

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/probe-rs/probe-rs/releases/latest/download/probe-rs-tools-installer.sh | sh

Install bossac, the Flash programmer for Atmel SAM devices:

sudo apt install bossa-cli

Flashing and Running

The setup uses probe-rs, so you can just call cargo run, or use just:

just run blinky_basic

Arduino burning bootloader

These builds overwrite the Arduino bootloader on the MKR WiFi 1010. In theory, flashing the application to 0x2000 (and potentially adjusting the interrupt vector table offset register accordingly) should do the trick; in practice, this always locked up the core for me.

To restore the bootloader, I used a cheap DAP-LINK probe with pin soldered to the SWD pad on the bottom of the board and have the Arduino IDE believe it talks to a Atmel SAM-ICE. Here's the output of that:

Open On-Chip Debugger 0.10.0+dev-gf0767a31 (2018-06-11-13:40)
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
debug_level: 0
0
none separate
adapter speed: 400 kHz
cortex_m reset_config sysresetreq
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x000002f8 msp: 0x20007fd0
target halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x000000b0 msp: 0x20008000
** Programming Started **
auto erase enabled
wrote 8192 bytes from file /home/markus/.arduino15/packages/arduino/hardware/samd/1.8.14/bootloaders/mkrwifi1010/samd21_sam_ba_arduino_mkrwifi1010.bin in 2.584113s (3.096 KiB/s)
** Programming Finished **
** Verify Started **
verified 7984 bytes in 0.788973s (9.882 KiB/s)
** Verified OK **
** Resetting Target **
shutdown command invoked