Uploading Sketch

Method 1: Upload via USB

WIP depending on STM32 core

Method 2: Upload via Serial

Notes:

• Requires USB to Serial adaptor
• Board can be powered externally (12/24V etc.) or from USB-UART adaptor

Arduino IDE setup:

1. Set Upload Method to Serial (Tools > Upload Method > Serial)
2. Connect USB-UART adaptor and identify+select the COM port it presents as (Tools > Port > COMX)

Hardware setup:

1. Connect USB-UART adaptor to pins on EXP3 header as shown.
2. Ensure board is powered, either via USB-UART adaptor, USB, or external power.

Upload process:

1. Press and hold RUMBA32 BOOT button.
2. Press and release RUMBA32 RESET button.
3. Release RUMBA32 BOOT button.
4. RUMBA32 is now in hardware bootloader mode and will accept firmware upload via USART1 on EXP3 header.
5. Press "Upload" in Arduino IDE. If correctly configured and connected, the upload should be successful: