search

ch32-rs / wlink

An open source WCH-Link library/command line tool written in Rust.
Apache License 2.0
155 stars 25 forks source link

some more protocol decoding #20

Closed usbman01 closed 1 year ago

usbman01 commented 1 year ago

I am working on ARM version of wch-link. It seems when using the WCH-Link utility the same protocol is used So here is the 0x0c cmd. Maybe this can help on the RISC part too.

request: 0x81 0x0C 0x02 Target CPU speed

response: 0x82 0x0C 0x01 OK

Target CPU 0x04 = F103 0x08 = F203

Speed 1..3 means slow medium fast Speed 0 maybe default? OK response = 0x01

andelf commented 1 year ago

Many thanks: I'll add the docs.

https://github.com/ch32-rs/wlink/blob/085b39b8015c5cbbda8cfe197478ab3217e1666d/src/operations.rs#L32-L36

andelf commented 1 year ago

I need a better scheme to document the protocol. @septs Any ideas?

usbman01 commented 1 year ago

some update from the ARM impementation. 0x01..0x03 from the clk speed dropdown speed =0x00 ultrafast (no Pindelay) -> maybe unused estimate 2 MHz speed = 0x01 fast (1 µs Pindelay) about 500kHz speed = 0x02 medium (2 µs Pindelay) about 250KHz speed = 0x03 slow buggy (20 nops delay which is about 0.8 µs @24MHz xtal

andelf commented 1 year ago

close as completed