README
======
This README discusses issues unique to NuttX configurations for the
STMicro NUCLEO-H743ZI development board featuring the STM32H743ZI
MCU. The STM32H743ZI is a 400MHz Cortex-M7 operation with 2MBytes Flash
memory and 1MByte SRAM. The board features:
- On-board ST-LINK/V2-1 for programming and debugging,
- Mbed-enabled (mbed.org)
- 3 user LEDs
- Two pushbuttons (user and reset)
- 32.768 kHz crystal oscillator
- USB OTG FS with Micro-AB connectors
- Ethernet connector compliant with IEEE-802.3-2002
- Board connectors:
- USB with Micro-AB
- SWD
- Ethernet RJ45
- ST Zio connector including Arduino Uno V3
- ST morpho
Refer to the http://www.st.com website for further information about this
board (search keyword: NUCLEO-H743ZI)
Contents
========
- STATUS
- Serial Console
- Configurations
STATUS
======
2018-06-16: This port is still incomplete! It is lacking the following
at a minimum:
- The RCC register definitions must still be updated per the STM32H7x3
user manual.
- The RCC-based clock configuration logic must be redesigned to support
the STM32H7's RCC.
- There is no U[S]ART support in arch/arm/src/stm32h7. For the most
part the U[S]ART is compatible with the STM32 F7, however, updates
will be required to support: (1) the new STM32 H7 clock prescaler,
and (2) the new STM32 H7 Rx and Tx FIFOs.
- There is a fragmentary NSH here. However, it does not have any serial
console selected and is not expected to be usable.
This logic has set on a branch for some time with little progress. I
have decided to bring it into the master but only with the option to
select the STM32 H7 architecture dependent on CONFIG_EXPERMIMENTAL.
That should eliminate the possibility of anyone accidentally enabling
this know incomplete port.
2018-07-12: After several commits focused primarily on the H7 RCC and
serial driver, Mateusz Szafoni states the basic NSH configuration is
now functional.
Serial Console
==============
Many options are available for a serial console via the Morpho connector.
Here two common serial console options are suggested:
1. Arduino Serial Shield.
If you are using a standard Arduino RS-232 shield with the serial
interface with RX on pin D0 and TX on pin D1 from USART6:
-------- ---------------
STM32H7
ARDUINO FUNCTION GPIO
-- ----- --------- -----
DO RX USART6_RX PG9
D1 TX USART6_TX PG14
-- ----- --------- -----
2. Nucleo Virtual Console.
The virtual console uses Serial Port 3 (USART3) with TX on PD8 and RX on
PD9.
----------------- ---
VCOM Signal Pin
----------------- ---
SERIAL_RX PD9
SERIAL_TX PD8
----------------- ---
These signals are internally connected to the on board ST-Link.
The Nucleo virtual console is the default serial console in all
configurations unless otherwise stated in the description of the
configuration.
Configurations
==============
Information Common to All Configurations
----------------------------------------
Each Nucleo-H743ZI configuration is maintained in a sub-directory and
can be selected as follow:
tools/configure.sh [options] viewtool-stm32f107/<subdir>
Where options should specify the host build platform (-l for Linux, -c for
Cygwin under Windows, etc.). Try 'tools/configure.sh -h' for the complete
list of options.
Before starting the build, make sure that (1) your PATH environment variable
includes the correct path to your toolchain, and (2) you have the correct
toolchain selected in the configuration.
And then build NuttX by simply typing the following. At the conclusion of
the make, the nuttx binary will reside in an ELF file called, simply, nuttx.
make
The <subdir> that is provided above as an argument to the tools/configure.sh
must be is one of the following.
NOTES:
1. These configurations use the mconf-based configuration tool. To
change any of these configurations using that tool, you should:
a. Build and install the kconfig-mconf tool. See nuttx/README.txt
see additional README.txt files in the NuttX tools repository.
b. Execute 'make menuconfig' in nuttx/ in order to start the
reconfiguration process.
2. Unless stated otherwise, all configurations generate console
output on the ST-Link VCOM, USART3.
3. Unless otherwise stated, the configurations are setup for Linux by
default:
Build Setup:
CONFIG_HOST_LINUX=y : Linux host operating system
4. All of these configurations use the general arm-none-eabi toolchain for
Linux That toolchain selection can easily be reconfigured using 'make
menuconfig'.
5. These configurations all assume that you are loading code using
something like the ST-Link v2 JTAG. None of these configurations are
setup to use the DFU bootloader but should be easily reconfigured to
use that bootloader if so desired.
Configuration Sub-directories
-----------------------------
nsh:
This configuration provides a basic NuttShell configuration (NSH)
for the Nucleo-H743ZI. The default console is the VCOM on USART3.
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