But the
ESP32-C3 is a computer... All asic miners have one to run the mining software (aka "control" board), they are ARM based, but i assume sooner or later they will switch to RISC-V like you did. China is particularly strongly interested in moving out from arm into risc-v.
So technically you just need to plug the Compac F to one of those SoC solutions via USB and port/compile cgminer to the appropriate architecture or replace it with your own mining software.
I'm curious about the availability of BM1397 at this point, shouldn't you aim for later chips now?
The distinction is that the ESP32 doesn't run Linux. Because of that it can be significantly lower performance, and cheaper. All the while still being a very decent miner for ~6 ASICs
Cgminer is really setup to run on a desktop OS (like Linux, macOS or Windows), and will not easily port to bare metal or an RTOS on the ESP32.
IMO BM1397 is still in the sweet spot of price, performance and efficiency (for people who aren't Bitmain). For example the BM1397 has a higher hashrate per chip
and is cheaper in small-ish quantities than the BM1398 (S19) and BM1362 (S19J Pro)