1.. zephyr:board:: google_dragonclaw
2
3Overview
4********
5
6Dragonclaw is a board created by Google for fingerprint-related functionality
7development. See the `Dragonclaw Schematics`_ for board schematics, layout and
8BOM.
9
10Board has connectors for fingerprint sensors. Console is exposed over μServo
11connector. MCU can be flashed using μServo or SWD.
12
13Hardware
14********
15
16- STM32F412CGU6 UFQFPN48 package
17
18Peripherial Mapping
19===================
20
21- USART_1 TX/RX : PA9/PA10
22- USART_2 TX/RX : PA2/PA3
23- SPI_1 CS/CLK/MISO/MOSI : PA4/PA5/PA6/PA7
24- SPI_2 CS/CLK/MISO/MOSI : PB12/PB13/PB14/PB15
25
26Programming and Debugging
27*************************
28
29Build application as usual for the ``dragonclaw`` board, and flash
30using μServo or an external J-Link connected to J4. If μServo is used, please
31follow the `Chromium EC Flashing Documentation`_.
32
33Debugging
34=========
35
36Use SWD with a J-Link or ST-Link. Remember that SW2 must be set to CORESIGHT.
37
38References
39**********
40
41.. target-notes::
42
43.. _Dragonclaw Schematics:
44   https://www.chromium.org/chromium-os/dragonclaw/dragonclaw_v0.2.html
45
46.. _Chromium EC Flashing Documentation:
47   https://chromium.googlesource.com/chromiumos/platform/ec#Flashing-via-the-servo-debug-board
48