CH59x porting

[pwilkowski]

I was wondering how hard it would be to port this core (which i love for ESP32 and nrf52840) to risc-v CH592X (and possibly other mcus from WCH)

there is already a minimal HAL made for those MCUs https://github.com/cnlohr/ch32fun

which does include ISLER https://github.com/cnlohr/ch32fun/blob/master/extralibs/iSLER.h
Industry Standard Low Energy Radio (iSLER) RX/TX for ch32fun

[h2zero]

Could be possible, though I don't think there are any drivers for NimBLE.

[pwilkowski]

It would probably mean making another platform like yours which is https://github.com/h2zero/platform-n-able

I really like your core/platform/framework for nrf52840 as its literally the most stable BLE I've tried.

What is needed for nimble to work? There is already CH59x port for freertos so i would assume it would be close to implementation you already have with the exception of lowest level calls going to isler instead of what is currently used.

[h2zero]

Thanks :), another platform wouldn't be needed, could just add the support to that one. The nimble host would need an interface to iSLER, which could be done, may have a few complications though.

[pwilkowski]

Is there anything i could do to make it happen? For the longest time ive been searching for cheap, standard ble/usb microcontroller that doesn't consume tons of power and has support. While ESP32 (even C3) is great it just too power hungry. NRF52840 is too complex for most of my projects. CH592F seems perfect IF i could get nimble run on it.

WeAct CH592F board is like 3$ on aliexpress. and chip itself cost like 0.9$ or less in bulk.

[h2zero]

I share your thoughts, need something cheaper than nordic and low power, I was hoping the H2 might fit the bill but it's power consumption is still too high.

I'll have a look at these, would need to tool up and test what's already available.

[pwilkowski]

If you are looking for something even cheaper, CH570 is like 0.27$ and CH572 is 0.44$ altho they do look kinda limited, not sure if its possible to get nimble running on them, altho iSLER seems to support them

EDIT. apparently 570 doesnt have BLE but 572 does