Note: the ECC608A or ECC608B is compliant with HIP-19. The other chips in this family: ATSHA204A · ATECC108A · ATECC508A are not compliant with HIP-19.
An OTP library for communicating with the Microchip ATECC608A family of crypto-authentication devices.
$ make
You will need an ECC608A attached to an I2C bus on a board that has I2C enabled, and can run Erlang.
For our most common use we wire up an ECC608A to a Raspberry Pi
configured for development and enable I2C using raspi-config.
Also install the Erlang development tools:
$ sudo apt update
$ sudo apt install erlang-nox erlang-dev i2c-tools
Once you've set up your Raspberry Pi and wired up the ECC608A you
should be able to see it using i2cdetect
$ i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
This shows the ECC at address (hex) 60 on bus i2c-1.
For development purposes you can then clone this repository, and start an Erlang shell to communicate with the ecc:
$ git clone http://github.com/helium/ecc508
$ cd ecc508
$ ./rebar3 shell
$ {ok, Pid} = ecc508:start_link().
Then check out the data-sheet linked above and the functions in the eec508 module to see how to access the various functions of the ECC608.
