CH32F103 based DSO150 (FNIRSI clone)

 So i finally bought one to make sure lnDSO150 does run on it.

First feedback :

- As expected the main diff is the chip is a CH32F103 instead of a STM32F103. I added support for the CH32F103 on the blackmagic probe, so it should not be an issue to reprogram it.

- The main board seems almost identical to the original one. R12 and R13 are missing which might indicate the buttons are not wired the exact same way, which would explain the problem report about pressing "OK" not working.

- Some components are missing , mostly the trigger comparator stuff which is a leftover of older software.

- The analog board is similar but more compact and using 100% SMD components.


The FNIRSI software is not bad, looks pretty, very close to the original one in look & feel.

But it feels a bit slow, we'll see how lnDSO150 performs on the CH32F103

More on that soon.


Edit :

Indeed, the "OK" and "Trigger" button are connected to PA11 / PA12 instead of PB6/PB7


Edit 2:

There is also a small difference in the AC/DC/GND switch detection.


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