Flashing the Mini CC3D Atom

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On this board the BOOT0 pin is not exposed on a pad or solder joint, and even tied directly to GND, which makes any effort accessing it essentially impossible. The simplest method for first-time flashing is to use SWD via a ST-Link V2 adapter, which is supported by the GUI. Subsequent flashing (updating) can be performed using a USB-TTL adapter, as described in Updating the Firmware of NT Modules.

First-Time Flashing Using SWD

1. You will need a ST-Link V2 Programmer or similar. Ensure that it is working (drivers installed, etc.).

2. Solder 3 wires into the Mini CC3D and connect to the programmer. The solder pad for the "+" is very to close to the USB metal case. Recommend powering the board through the USB connector.

"0" to "SWDIO"

"K" to "SWCLK"

"-" to "GND"

3. Connect USB to the programmer, if not done, and to the CC3D. The Green LED will light and after booting for several seconds the Blue LED will flash on long and off short. Cycles ~ .75 seconds. This indicates the OP firmware is running. This matters since after the NT firmware loads the on and off times of the Blue LED will be equal.

4. From the STorM32 GUI select the Flash Firmware Tab and set the fields as seen below:

5. Select the Flash Firmware button and a DOS window opens similar to below:

Your Blue LED should now be flashing on and off at the same interval indicating the NT IMU firmware is running.

Updating Firmware

For updating the NT firmware you may again use the just described method of using SWD/ST-Link, but also the "canonical" procedure described in Updating the Firmware of NT Modules.