This is your basic "Hello World" program for the 1Bitsy setup to work with Drone OS

It sets up the system clock to run at 168 MHz.

This example uses drone-os v0.12.1

1Bitsy notes

• STM32F415RGT6
• HSI - 16 MHz
• HSE - 25 MHz
• LSE - 32.768 kHz
• 512K Flash
• 128K RAM
• has a LED connected to PA8 (active low)

Modifications

• Drone.toml changed gdb-client to be arm-none-eabi-gdb, since I haven't found gdb-multiarch for MacOS.
• Drone.toml changed serial-endpoint and gdb-endpoint to match the USB names that my Black Magic Probe shows up as under MacOS.

To build - assuming other setup has been done as per the Drone Book

git clone https://github.com/dhylands/drone-bitsy-blinky.git bitsy-blinky
cd bitsy-blinky
just build