boards/segger/trb_stm32f407/doc/index.rst
.. zephyr:board:: segger_trb_stm32f407
Overview
The Cortex-M Trace Reference Board V1.2 (SEGGER-TRB-STM32F407 for short) board is a reference board, based on the ST Microelectronics STM32F407VE ARM Cortex-M4 CPU, to test hardware tracing with the SEGGER Trace-Pro debuggers. It is not meant for general prototype development because it is extremely limited when it comes to IO, and only has 3 LEDs.
Hardware
Information about the board can be found at the SEGGER website_ .
The ST STM32F407VE website_ contains the processor's information
and the datasheet.
.. zephyr:board-supported-hw::
JTAG/SWD debug
+-------+--------------+-------+--------------+ | PIN # | Signal Name | Pin # | Signal Name | +=======+==============+=======+==============+ | 1 | VTref | 2 | SWDIO/TMS | +-------+--------------+-------+--------------+ | 3 | GND | 4 | SWCLK/TCK | +-------+--------------+-------+--------------+ | 5 | GND | 6 | SWO/TDO | +-------+--------------+-------+--------------+ | 7 | --- | 8 | TDI | +-------+--------------+-------+--------------+ | 9 | NC | 10 | nRESET | +-------+--------------+-------+--------------+ | 11 | 5V-Supply | 12 | TRACECLK | +-------+--------------+-------+--------------+ | 13 | 5V-Supply | 14 | TRACEDATA[0] | +-------+--------------+-------+--------------+ | 15 | GND | 16 | TRACEDATA[1] | +-------+--------------+-------+--------------+ | 17 | GND | 18 | TRACEDATA[2] | +-------+--------------+-------+--------------+ | 19 | GND | 20 | TRACEDATA[3] | +-------+--------------+-------+--------------+
SEGGER-STM32F407-TRB has one external oscillator. The frequency of the main clock is 12 MHz. The processor can setup HSE to drive the master clock, which can be set as high as 168 MHz.
Programming and Debugging
.. zephyr:board-supported-runners::
The SEGGER-TRB-STM32F407 board is specially designed to test the SEGGER Trace-Pro debuggers, so this example assumes a J-Trace or J-Link is used.
Connect the J-Trace/J-Link USB dongle to your host computer and to the JTAG port of the SEGGER-TRB-STM32F407 board. Then build and flash an application.
Here is an example for the :zephyr:code-sample:blinky application.
.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: segger_trb_stm32f407 :goals: build flash
After resetting the board, you should see LED0 blink with a 1 second interval.
Here is an example for the :zephyr:code-sample:blinky application.
.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: segger_trb_stm32f407 :maybe-skip-config: :goals: debug
.. _SEGGER website: https://www.segger.com/products/debug-probes/j-trace/accessories/trace-reference-boards/overview/
.. _ST STM32F407VE website: https://www.st.com/en/microcontrollers-microprocessors/stm32f407ve.html