DAPLink

DAPLink (CMSIS-DAP) porting to Artery AT32F425, WCH CH32V203 and WCH CH32V305.

DAPLink-AT32F425

DAPLink (CMSIS-DAP) based on Artery AT32F425 (support crystal-less USB), supports SWD, JTAG and CDC.

On C/C++ page of Keil Option Window:

• Define DAP_FW_V1: generate CMSIS-DAP V1 firmware, using HID transport protocol.
• Do not define DAP_FW_V1: generate CMSIS-DAP V2 firmware, using WINUSB transfer protocol.

Pin map

FUNC	Pin
SWD_CLK	PA.1
SWD_DIO	PA.0
SWD_RST	PA.4
CDC_TXD	PA.2
CDC_RXD	PA.3
JTAG_TDI	PA.7
JTAG_TDO	PA.6

Sch & PCB: https://oshwhub.com/xivn1987/daplink

DAPLink-CH32V203

DAPLink (CMSIS-DAP) based on WCH CH32V203 (support crystal-less USB), supports SWD, JTAG and CDC.

On Properties for DAPLink -> C/C++ Build -> Settings -> C Compiler -> Preprocessor page:

• Define DAP_FW_V1: generate CMSIS-DAP V1 firmware, using HID transport protocol.
• Do not define DAP_FW_V1: generate CMSIS-DAP V2 firmware, using WINUSB transfer protocol.

Pin map

FUNC	Pin
SWD_CLK	PA.1
SWD_DIO	PA.0
SWD_RST	PA.4
CDC_TXD	PA.2
CDC_RXD	PA.3
JTAG_TDI	PA.7
JTAG_TDO	PA.6

Sch & PCB: https://oshwhub.com/xivn1987/daplink

DAPLink-CH32V305

DAPLink (CMSIS-DAP) based on WCH CH32V305 (High Speed USB with on-chip PHY), supports SWD, JTAG and CDC.

Pin map

FUNC	Pin
SWD_CLK	PB.13
SWD_DIO	PB.12
SWD_RST	PC.8
CDC_TXD	PB.10
CDC_RXD	PB.11
JTAG_TDI	PB.15
JTAG_TDO	PB.14

Sch & PCB: https://oshwhub.com/xivn1987/DAPLink-HS

Speed Test

test command

pyocd erase -t stm32f411ce -f 5mhz --chip
pyocd flash -t stm32f411ce -f 5mhz random_512k.bin

test result

probe	pyocd print
AT32F425 HID	Erased 524288 bytes (8 sectors), programmed 524288 bytes (512 pages), skipped 0 bytes (0 pages) at 17.24 kB/s
AT32F425 WINUSB	Erased 524288 bytes (8 sectors), programmed 524288 bytes (512 pages), skipped 0 bytes (0 pages) at 38.34 kB/s
CH32V203 HID	Erased 524288 bytes (8 sectors), programmed 524288 bytes (512 pages), skipped 0 bytes (0 pages) at 17.26 kB/s
CH32V203 WINUSB	Erased 524288 bytes (8 sectors), programmed 524288 bytes (512 pages), skipped 0 bytes (0 pages) at 38.16 kB/s
CH32V305 HID	Erased 524288 bytes (8 sectors), programmed 524288 bytes (512 pages), skipped 0 bytes (0 pages) at 35.44 kB/s