lnDSO: Success with GD32VF103



It works ! The first ~ working frankenstein DSO150 with a GD32VF103 RISCV core.

As usual, the dumber the mistake is, the harder it is to find

In  no special order :

- Arm : The vector table must be 512 bytes aligned

- Riscv : Dont forget to set the capture pin to ADC mode (the arm version does not care for whatever reason)

- When switching the pins from LCD to button, initialize them properly

All these are *DUMB* mistakes, but each time it took me a week to figure out why it didnt work.

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