DLP-USB1232H and OpenOCD based JTAG adapter
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The DLP Design DLP-USB1232H (datasheet) single channel high-speed USB adapter can be used as a JTAG adapter with OpenOCD support.
Schematics
These sample schematics show how to connect the DLP-USB1232H device pins to a sample JTAG device (an Olimex STM32-H103 eval board in this case).
Documentation: DLP-USB1232H datasheet (pinout is on page 4 and page 7), schematics of the STM32-H103, STM32-H103 JTAG connector pinout.
| Pin type | DLP-USB1232H pin# | STM32-H103 JTAG pin# | Comments |
|---|---|---|---|
| TRST | 17 | 3 | (N)TRST on the STM32-H103 |
| TDI | 16 | 5 | |
| TMS | 5 | 7 | |
| TCK | 18 | 9 | |
| TDO | 2 | 13 | |
| (S)RST | 13 | 15 | |
| GND | Either 1 or 10 | Any GND pin | Any STM32-H103 GND pin on the JTAG connector can be used, e.g. 4, 6, 8, 10, 12, 14, 16, 18, or 20. |
IMPORTANT: You also need to connect/shorten pins 8 and 9 on the DLP-USB1232H module in order to configure it to be powered via USB.
Also, the JTAG target (the STM32-H103 in this example) must be powered (via USB in this case).
Usage
$ openocd -f interface/dlp-usb1232h.cfg -f board/olimex_stm32_h103.cfg
A patch for OpenOCD to add the dlp-usb1232h.cfg file has been submitted.
Resources
The DLP-USB1232H is available from various sources, e.g.: Digikey, Mouser, or Saelig.
The module can also be used as a cheap and simple SPI BIOS chip programmer together with the flashrom utility.
