Issue with flashing CAN Firmware

[AhlawatAnup]

We have created a custom ESC using the STM32 L431 and have successfully flashed the CAN bootloader onto it. However, we are facing issues when flashing the firmware. We don’t have an ST-Link V3 at the moment, so we are using an ST-Link V2, which doesn’t have a CAN bus adapter.

Is there any way to flash the firmware?

** Some important points to note:

• We have successfully tested Serial Wire (DShot 300), with both the bootloader and firmware successfully flashed onto it with motor spinning.
• • PA2 as Signal Pin