exxos's Atari, Amiga & retro forum

8 Bit Dreams wrote: 31 Jan 2020 12:38 Seems i got it wrong, was under impression Amiga crashes if You go lower than 140Kbps...

I think other way round.
Stm32 SPI and I2S speed is tied up with arm clock.
The slowest which you can set up is fPCLK/256 (clock is 32 or 72 Mhz?)
It seems that Amiga doesn't handle this speeds at all.

Therefore there is need of doing custom communication. Simply by setting value on GPIO pin and wait (delay).

arkadiusz.makarenko wrote: 30 Jan 2020 23:25

terriblefire wrote: 30 Jan 2020 22:37

I may have a shakey TF330 rev 1 kicking about that you could have .

Could I borrow it, until I will build my own TF330?

If you need a TF330 then I can send you one to help with the dev of the Riser, so if you need it contact me

I have realised that I have enough spares to build TF328.
It should do the job for now.

arkadiusz.makarenko wrote: 31 Jan 2020 22:09 I have realised that I have enough spares to build TF328.
It should do the job for now.

Well if you need anything component wise ,get in touch as I have parts for the TF330 and the TF328

@terriblefire
Do you have cpld firmware available somewhere?

supaduper wrote: 31 Jan 2020 22:12

arkadiusz.makarenko wrote: 31 Jan 2020 22:09 I have realised that I have enough spares to build TF328.
It should do the job for now.

Well if you need anything component wise ,get in touch as I have parts for the TF330 and the TF328

Thank you.

arkadiusz.makarenko wrote: 31 Jan 2020 22:13 @terriblefire
Do you have cpld firmware available somewhere?

The github repo will be out of date, the most up to date version is on my main PC. Unfortunately i"m in the Netherlands right now.

I managed to confirm basic elements of my build:
1. Video out - crisp!
2. I can connect to stm32
3. I can see cpld

I don't have 100k resistor yet. I had to miss it on order.

I had to trim video connector and battery holder to fit them on the board. This battery holder is massive and raised to the same height like connector. I might have bought wrong one.

I had issues with USB, before I realised that I ordered 22nF instead of 22pF capacitors for oscillator circuit, which is required for USB to work, as on internal default clock there is 16MHz only.

Now I can see that APPLICATION_START and APPLICATION_DISCONNECT are being generated on connecting/disconnecting devices but I always get HID_UNKNOWN.
There is still something not 100% right, but ... small steps in the right direction.

Damn.
I have killed either stm32 or st-link.
I cannot connect to it any more.


EDIT: No, I managed to connect under reset. I am a moron.