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Good day Azad, If you have MRS IDE and the WCH example, it should work with using the HSE (external crystal) and define the correct frequency for you crystal like this: in system_ch32v00x.c: #define SYSCLK_FREQ_24MHz_HSE HSE_VALUE in ch32v00x.h: #define HSE_VALUE ((uint32_t)18432000) You can find an example with a blink led at below repo if you need, just configure the library for the WCH board if you have it, by defining EVK_CH32V003_GENERIC in ol_lib.h. github.com/jfsimon1981/orion_nunki_evk I'll try get the clocks covered in future, but that's quite some work, meanwhile this should get to work for you. Regards Jean-François

Thanks Charles, i should re-upload this one sometimes, small export mistake. Will continue with couple projects, presently i make the board setup and ide headers for it, should be neat host for various projects in the future. Regards, Jean-François

Yes but i found an interesting thing too, there's a specific speed ramp and frequency to reach high speed. That's because of some motor construction, the magnetic pulsating torque or other aspects, i'm not too sure why, but only a fast accelerating ramp and special high speed worked. Like it stalls much slower (about 30% slower) if you don't have found the right parameters, funny trick. Jean-François

@@chrysalide_electronics Interesting.

Thanks for the Ref. That's right indeed. Jean-François

Hi Tang, This particular design i made it and had it manufactured from JLCPCB. They have really good services so far. Usually i design boards and have them manufactured by others, until i have equipment to make quick turns of small size surface mount. I still miss a bit of equipment to make them. Regards Jean-François

Hello JBSate, it is MRS MounRiver Studio: www.mounriver.com/ Regards, Jean-François

Hi it's MRS MoutRiver Studio, based on Eclipse and similar to mainstream IDEs used at NXP, STM ... I run the Linux one. It's available i believe for Mac, Windows and Linux, as makefile and MRS projects, although it's easier to just use the MRS project (which is building and flashing right away, with proper link files included to flash proper region). Regards Jean-François

​@@chrysalide_electronics Is there a plugin for VS Code that works with this device?

Hi, good question, i'll investigate further, there seems to be works about this, like this VS's Makefile using the MRS (MounRiver studio) in the background. Link below: github.com/jfsimon1981/CH32V003_Template Regards, Jean-François

Right but if i did too smoothly, it also stalled, so that's strange. I think passed the datasheer performance, there are tricks. It can also resonate at certain frequencies, so it ran above or below them, but stalls at some frequencies. Quite odd, there's a good load of tricks if we look into the details of it. Regards Jean-François

Note on this, there's a frequency related similarly to a sawtooth torque, due to the internal construction, stepper and BCLD motors have an oscillating torque superimposed with the driving torque. That can resonante, it can al help or go against depending on actual speed, because that's phase dependent, hence resonant frequencie, and higher/lower torques at particular frequencies. That's interesting, essentially, when a system becomes quite dynamic (ie high speed, high accelerations, etc ...), fine tuning these parameters (ie finding those speed ranges and perhaps forbid running inside them) is probably required. Regards, Jean-François

Thanks I like build them, i'll do a bit of RISC-V works in the future, the chips are so versatile i think it's gonna be a great fit for the projects we're working on. Regards Jean-François