type-c port stlink

The original STM32 version
uses STM32F103CBT6 to burn firmware, which can be used as a debugger
. CKS32F103CBT6
is a 32-bit microcontroller from Kexin. It can be replaced by pin to pin STM32F103CBT6. The price is half of STM32 (I have tried GD32 but something went wrong. The firmware can be burned in, but Not working)
Price advantage
If you buy it on Taobao, STM32 should cost 6-7 yuan. CKS32 can cost about 3 yuan, and it can be reduced in large quantities. In this way, the overall cost of making a full-featured STLINK original can be controlled at about 8 yuan. jlc is free. Five boards can be used by just pasting them on yourself. It is cheaper than buying stlink without virtual serial port on Taobao. This version does not omit the USB enumeration circuit, resettable fuse and dual diodes, and also uses a more expensive crystal oscillator. If There is still room for extreme savings, and it is estimated that it can reach 7 or even below 7. The interface (SWD) for downloading firmware is reserved on the back of
the firmware download method
. After using other downloaders to download STLinkV2.J28.M18.bin to stlink, use the ST-LinkUpgrade tool to upgrade (STM32CUBEIDE also has its own upgrade method). Finally The implementation is STlink + a virtual serial port + a virtual U disk.
The CKS32 and STM32 registers are exactly the same. You don’t need to change anything, just burn them directly.
After downloading the firmware, you can no longer use SWD to download. If it cannot be used normally, it is most likely a circuit problem.
     It is recommended to check whether the DC bias voltage of the transistor is correct.
You need to use cks32f103cbt6 or stm32f103cbt6, not c8t6.
There
are firmware and download tools in the attachment.