Imported from GitHub: diva-eng/diva-card · commit 1847dd3 · license MIT

Description

Raspberry Pi 2040 based development board/card

README

Diva Card example firmware (Arduino RP2040)

This folder contains a simple example firmware for the Diva Card RP2040-based board. It demonstrates:

• USB-Serial logging at 115200
• Initializing and toggling the user LED (GPIO9)
• Initializing I2C (Wire) and scanning for the Microchip ATECC608A at address 0x60
• A placeholder pin for WS2812 data (GPIO10).

Build with PlatformIO (recommended for setting custom VID/PID):

1. Install PlatformIO extension for VS Code or use pio CLI.

2. Edit platformio.ini to set your desired USB VID/PID:

   • board_build.usb_vendor_id = 0x1234
   • board_build.usb_product_id = 0xABCD

   Replace the hex values with your vendor/product IDs.

3. Build and upload:

pio run -e raspberrypi_pico -t upload
pio device monitor -e raspberrypi_pico

Notes:

• The board schematic maps I2C0_SDA to GPIO2 and I2C0_SCL to GPIO3 — Wire.begin() uses those defaults.
• The example initializes the I2C bus and then uses Microchip's cryptoauthlib to talk to the ATECC608A. The sketch calls atcab_init, atcab_wakeup, atcab_read_serial_number, and atcab_sleep (the library is fetched by PlatformIO via platformio.ini).
• If you prefer the Arduino IDE / Arduino CLI, building with a custom VID/PID is platform/core dependent; PlatformIO makes it easy via platformio.ini.