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circuitpython/ports/stm32/boards/OLIMEX_H407/README.md
Chris Fiege 6e39f2cc1e stm32/boards: Add OLIMEX H407 board definition. 
This change adds the OLIMEX H407 support to the STM32 port.  The H407
(https://www.olimex.com/Products/ARM/ST/STM32-H407/) is simliar to the
already existing E407
(https://www.olimex.com/Products/ARM/ST/STM32-E407) but does not support
Ethernet and has a full-size USB-A port instead of a Mini-USB socket.

Both boards use the STM32F407ZGT6 CPU.

This port is basically a copy of the E407 but with changed pinmux:
* Removed Ethernet pin definition
* Removed UART1 (pins are used for other functions)
* Removed UART3 flow control pins (pins are used for other functions)
* Removed SD-Card detect pin (since it is not connected on the H407)

A REPL on UART3 is connected to the U3BOOT-header, a 3-pin header with RX,
TX and GND that is intended for the serial terminal.

Tested:
* Micro-SD Card is detected when inserted on RESET
* REPL on UART3 works
* Serial port on the mini USB socket

Signed-off-by: Chris Fiege <cfi@pengutronix.de>
2021-09-19 16:58:58 +10:00

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OLIMEX H407 board

This board definition supports the OLIMEX H407 board: https://www.olimex.com/Products/ARM/ST/STM32-H407/

A REPL is available at the U3BOOT connector with 115200 baud and on the micro USB socket.

What works

  • REPL
  • UART
  • SD-Card
  • Timer
  • GPIOs
  • USB device on the mini USB socket