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- README
- ======
- This README discusses issues unique to NuttX configurations for the
- STMicro STM32F769I-DISCO development board featuring the STM32F769NIH6
- MCU. The STM32F769NIH6 is a 216MHz Cortex-M7 operating with 2048K Flash
- memory and 512Kb SRAM. The board features:
- - On-board ST-LINK/V2 for programming and debugging,
- - Mbed-enabled (mbed.org)
- - 4-inch 800x472 color LCD-TFT with capacitive touch screen
- - SAI audio codec
- - Audio line in and line out jack
- - Two ST MEMS microphones
- - SPDIF RCA input connector
- - Two pushbuttons (user and reset)
- - 512-Mbit Quad-SPI Flash memory
- - 128-Mbit SDRAM
- - Connector for microSD card
- - RF-EEPROM daughterboard connector
- - USB OTG HS with Micro-AB connectors
- - Ethernet connector compliant with IEEE-802.3-2002 and PoE
- Refer to the http://www.st.com website for further information about this
- board (search keyword: stm32f769i-disco)
- Contents
- ========
- - STATUS
- - Development Environment
- - LEDs and Buttons
- - Serial Console
- - Configurations
- STATUS
- ======
- 2017-07: The basic NSH configuration is functional using a serial
- console on USART1, which is connected to the "virtual com port"
- of the ST/LINK USB adapter.
- 2017-07: STM32 F7 Ethernet appears to be functional, but has had
- only light testing.
- Work in progress: Use LCD over DSI interface, rest of board.
- Development Environment
- =======================
- The Development environments for the STM32F769I-DISCO board are identical
- to the environments for other STM32F boards. For full details on the
- environment options and setup, see the README.txt file in the
- config/stm32f769i-disco directory.
- LEDs and Buttons
- ================
- LEDs
- ----
- The STM32F769I-DISCO board has numerous LEDs but only one, LD3 located
- near the reset button, that can be controlled by software.
- LD3 is controlled by PI1 which is also the SPI2_SCK at the Arduino
- interface. One end of LD3 is grounded so a high output on PI1 will
- illuminate the LED.
- This LED is not used by the board port unless CONFIG_ARCH_LEDS is defined.
- In that case, the usage by the board port is defined in include/board.h
- and src/stm32_leds.c. The LEDs are used to encode OS-related events as
- follows:
- SYMBOL Meaning LD3
- ------------------- ----------------------- ------
- LED_STARTED NuttX has been started OFF
- LED_HEAPALLOCATE Heap has been allocated OFF
- LED_IRQSENABLED Interrupts enabled OFF
- LED_STACKCREATED Idle stack created ON
- LED_INIRQ In an interrupt N/C
- LED_SIGNAL In a signal handler N/C
- LED_ASSERTION An assertion failed N/C
- LED_PANIC The system has crashed FLASH
- Thus is LD3 is statically on, NuttX has successfully booted and is,
- apparently, running normally. If LD3 is flashing at approximately
- 2Hz, then a fatal error has been detected and the system has halted.
- Buttons
- -------
- Pushbutton B1, labelled "User", is connected to GPIO PI11. A high
- value will be sensed when the button is depressed.
- Serial Console
- ==============
- Use the serial interface the ST/LINK provides to the USB host.
- Configurations
- ==============
- Common Configuration Information
- --------------------------------
- Each STM32F769I-DISCO configuration is maintained in a sub-directory and
- can be selected as follow:
- tools/configure.sh stm32f769i-disco/<subdir>
- Where <subdir> is one of the sub-directories listed below.
- Configuration Directories
- -------------------------
- nsh:
- ---
- Configures the NuttShell (NSH) located at apps/examples/nsh. The
- Configuration enables the serial interfaces on UART1.
- Otherwise nothing is enabled, so that config is a starting point
- for initial testing.
- Support for builtin applications is enabled, but in the base
- configuration no builtin applications are selected.
- nsh-ehternet:
- ---
- Same as above but a lot more hardware peripherals enabled,
- in particular ethernet, as well as networking stuff.
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