wch experiments

WCH-Link

https://www.wch.cn/products/WCH-Link.html

wmesg -w

[ 1223.228032] usb 1-9.2: new full-speed USB device number 14 using xhci_hcd
[ 1223.333465] usb 1-9.2: New USB device found, idVendor=1a86, idProduct=8010, bcdDevice= 2.07
[ 1223.333497] usb 1-9.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1223.333509] usb 1-9.2: Product: WCH-Link
[ 1223.333517] usb 1-9.2: Manufacturer: wch.cn
[ 1223.333524] usb 1-9.2: SerialNumber: 0001A0000000
[ 1223.355473] cdc_acm 1-9.2:1.1: ttyACM0: USB ACM device

udev

sudo cp 49-wch-link.rules /etc/udev/rules.d/
sudo udevadm control --reload-rules && sudo udevadm trigger

Programmer

https://github.com/ch32-rs/wlink

cargo install --git https://github.com/ch32-rs/wlink

~/.cargo/bin/wlink status

CH32Vx03C-R0-1v0 Board

MCU: CH32V203C8T6

https://github.com/openwch/ch32v20x

WCH-Link	EVB	MCU
3V3	P2.4	3V3
GND	P2.6	GND
SWDIO	P2.8	PA13
SWCLK	P2.10	PA14
RST	P2.12	NRST

• https://github.com/openwch/ch32v20x
• ch32v20x.h

CH32V003F4P6-R0-1v1 Board

MCU: CH32V003F4P6

WCH-Link	EVB	MCU
3V3	P2.2	3V3
GND	P2.4	GND
SWDIO	P2.6	PD1

CH32V307EVB-R1 Board

MCU: CH32V307VCT6

Schematic: https://github.com/openwch/ch32v307/blob/main/EVT/PUB/CH32V30xSCH.pdf

P6: USB HS connector

• PB6: D-
• PB7: D+

Connect tor Goryn

port	f1	f2	305	J3	J4	W
PD2		SD_CMD	26		36
PC12	SPI3MOSI	SD_CK	25		40
PC11	SPI3MISO1	SD_D3	24		41
PC10	SPI3SCK1	SD_D2	23		42
PA14	SWCLK		22	27
PA13	SWDIO		19	29
PC9		SD_D1	18		47
PC8		SD_D0	17		48
PB15	SPI2MOSI		16		13
PB14	SPI2MISO		15		11
PB13	SPI2SCK		14		9
PB12	SPI2NSS		13		15
PB11			12		3
PB10			11		1
PA7	SPI1MOSI		10		31
PA6	SPI1MISO		9		29
PA5	SPI1SCK		8	38
PA4	SPI1NSS		7	36
PC3			5	37
PC2			4	35
NRST			3
PD1			2		38
PD0			1		39

Connect to FT2232H

port	f1	WCH-J3	color	FTD-J1	port
GND		25	blue	6
PA14	SWCLK	27	orng	7	ADBUS0
PA13	SWDIO	29	red	12	ADBUS3

CH32V317W-EVT-R0 Board

https://www.wch-ic.com/downloads/CH32V307DS0_PDF.html

References

• https://github.com/cnlohr/ch32v003fun
• https://github.com/tvlad1234/linux-ch32v003