iosetting / stdperiphlib_ch32f1 Goto Github PK

I am not sure if you were able to read the Chinese manual for the CH32F103, but there have been problems that many users of the Bluepill have with getting USB to work. If you could answer some questions for me it would help me investigate this.

1. First, what is the Coreid that the CH32F103 presents when debugging? The STM32F1 is 0x1BA01477, for example.
2. Does the datasheet say that 22 ohm resistors should be in series with the PA11/PA12 USB -/+ pins and that PA12 should be pulled up with a 1k5? The schematic on the evaluation board does not include these. Most Bluepills do include these, and I am wondering if that's part of the problem.
3. Is the USB device on the CH32F103 intended to be register and memory compatible with STM32F103 ? The registers have the same names and bits, but there could be additional initialization required for the CH32F103 that is not required on the STM32F103.
4. Are there any complete code examples of USB for the CH32F103, for example, a USB CDC implementation that you know of?

Thank you!