I have built a proprietary Netduino2-based PCB, running the STM32F205RGT6 processor.
V4.2 firmware loaded correctly, the board is recognized as Netduino and I was able to load the first test program from Visual Studio.
But now I cannot load any other program anymore, I get the infamous "Unable to communicate with device" message.
The PCB doesn't contain any circuitry to reset the board when Visual Studio starts communicating with the board. Am I missing something?
Does anybody know if there is an additional handshake or reset taking place when uploading programs via USB than just USB communication?