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I have written an example usign the libopencm3 library in C++ to read 3 ADC channels on an STM32 Maple Mini (STM32F1) and store it into an array using the DMA.

The whole code is here and the output can be seen on the serial port 1.

I had a little confusion regarding how to flash a firmware into the maple mini board and, more in general, on the STM32 family microcontroller.

Normally I have always used an st-link V2 usb pen for both upload a new firmware and debugging purpose, but a friend ask me "why …