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