2016-03-25 21:21:24 +01:00
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XXX all this needs review and update
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README
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======
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This README discusses issues unique to NuttX configurations for the ST
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STM32L476VG Discovery board from ST Micro. See
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http://www.st.com/stm32l476g-disco
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STM32L476VG:
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Microprocessor: 32-bit ARM Cortex M4 at 80MHz STM32F476VGT6
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Memory: 1024 KB Flash and 96+32 KB SRAM
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ADC: 3x12-bit, 2.4 MSPS A/D converter: up to 24 channels
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DMA: 16-stream DMA controllers with FIFOs and burst support
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Timers: Up to 11 timers: up to eight 16-bit, two 32-bit timers, two
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watchdog timers, and a SysTick timer
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GPIO: Up to 51 I/O ports with interrupt capability
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I2C: Up to 3 x I2C interfaces
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USARTs: Up to 3 USARTs, 2 UARTs, 1 LPUART
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SPIs: Up to 3 SPIs
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SAIs: Up to 2 dual-channel audio interfaces
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CAN interface
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SDIO interface
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QSPI interface
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USB: USB 2.0 full-speed device/host/OTG controller with on-chip PHY
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CRC calculation unit
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RTC
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Board features:
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Peripherals: 2 led, 1 d-pad joystick, 2 x LED, LCD, USC OTG FS, SAI stereo
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Digital Microphone, MEMS Accelerometer, Magnetometer,
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Gyroscope, 128 Mbit QSPI Flash, current ammeter
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Debug: Serial wire debug and JTAG interfaces
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Uses a STM32F103 to provide a ST-Link for programming, debug similar to the
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OpenOcd FTDI function - USB to JTAG front-end.
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See http://mbed.org/platforms/ST-Nucleo-L476RG for more
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information about these boards.
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Contents
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========
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2016-07-08 00:21:11 +02:00
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- mbed
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2016-03-25 21:21:24 +01:00
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- Hardware
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- Button
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- LED
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- USARTs and Serial Consoles
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- LQFP64
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- mbed
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- Shields
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- Configurations
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mbed
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====
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The Nucleo-F401RE includes boot loader from mbed:
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https://mbed.org/platforms/ST-Nucleo-F401RE/
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https://mbed.org/handbook/Homepage
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Using the mbed loader:
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1. Connect the Nucleo-F4x1RE to the host PC using the USB connector.
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2. A new file system will appear called NUCLEO; open it with Windows
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Explorer (assuming that you are using Windows).
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3. Drag and drop nuttx.bin into the MBED window. This will load the
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nuttx.bin binary into the Nucleo-F4x1RE. The NUCLEO window will
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close then re-open and the Nucleo-F4x1RE will be running the new code.
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Hardware
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========
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GPIO
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----
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SERIAL_TX=PA_2 USER_BUTTON=PC_13
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SERIAL_RX=PA_3 LED1 =PA_5
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A0=PA_0 USART2RX D0=PA_3 D8 =PA_9
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A1=PA_1 USART2TX D1=PA_2 D9 =PC_7
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A2=PA_4 D2=PA_10 WIFI_CS=D10=PB_6 SPI_CS
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A3=PB_0 WIFI_INT=D3=PB_3 D11=PA_7 SPI_MOSI
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A4=PC_1 SDCS=D4=PB_5 D12=PA_6 SPI_MISO
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A5=PC_0 WIFI_EN=D5=PB_4 LED1=D13=PA_5 SPI_SCK
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LED2=D6=PB_10 I2C1_SDA=D14=PB_9 Probe
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D7=PA_8 I2C1_SCL=D15=PB_8 Probe
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From: https://mbed.org/platforms/ST-Nucleo-F401RE/
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Buttons
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-------
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B1 USER: the user button is connected to the I/O PC13 (pin 2) of the STM32
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microcontroller.
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LEDs
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----
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The Nucleo F401RE and Nucleo F411RE provide a single user LED, LD2. LD2
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is the green LED connected to Arduino signal D13 corresponding to MCU I/O
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PA5 (pin 21) or PB13 (pin 34) depending on the STM32target.
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- When the I/O is HIGH value, the LED is on.
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- When the I/O is LOW, the LED is off.
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These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
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defined. In that case, the usage by the board port is defined in
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include/board.h and src/sam_leds.c. The LEDs are used to encode OS-related
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events as follows when the red LED (PE24) is available:
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SYMBOL Meaning LD2
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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 No change
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LED_SIGNAL In a signal handler No change
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LED_ASSERTION An assertion failed No change
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LED_PANIC The system has crashed Blinking
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LED_IDLE MCU is is sleep mode Not used
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Thus if LD2, NuttX has successfully booted and is, apparently, running
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normally. If LD2 is flashing at approximately 2Hz, then a fatal error
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has been detected and the system has halted.
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Serial Consoles
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===============
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USART1
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------
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Pins and Connectors:
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RXD: PA11 CN10 pin 14
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PB7 CN7 pin 21
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TXD: PA10 CN9 pin 3, CN10 pin 33
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PB6 CN5 pin 3, CN10 pin 17
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NOTE: You may need to edit the include/board.h to select different USART1
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pin selections.
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TTL to RS-232 converter connection:
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Nucleo CN10 STM32F4x1RE
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----------- ------------
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Pin 21 PA9 USART1_RX *Warning you make need to reverse RX/TX on
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Pin 33 PA10 USART1_TX some RS-232 converters
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Pin 20 GND
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Pin 8 U5V
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To configure USART1 as the console:
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CONFIG_STM32_USART1=y
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CONFIG_USART1_SERIALDRIVER=y
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2016-03-25 21:21:24 +01:00
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CONFIG_USART1_SERIAL_CONSOLE=y
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CONFIG_USART1_RXBUFSIZE=256
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CONFIG_USART1_TXBUFSIZE=256
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CONFIG_USART1_BAUD=115200
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CONFIG_USART1_BITS=8
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CONFIG_USART1_PARITY=0
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CONFIG_USART1_2STOP=0
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USART2
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-----
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Pins and Connectors:
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RXD: PA3 CN9 pin 1 (See SB13, 14, 62, 63). CN10 pin 37
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PD6
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TXD: PA2 CN9 pin 2(See SB13, 14, 62, 63). CN10 pin 35
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PD5
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UART2 is the default in all of these configurations.
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TTL to RS-232 converter connection:
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Nucleo CN9 STM32F4x1RE
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----------- ------------
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Pin 1 PA3 USART2_RX *Warning you make need to reverse RX/TX on
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Pin 2 PA2 USART2_TX some RS-232 converters
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Solder Bridges. This configuration requires:
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- SB62 and SB63 Closed: PA2 and PA3 on STM32 MCU are connected to D1 and D0
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(pin 7 and pin 8) on Arduino connector CN9 and ST Morpho connector CN10
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as USART signals. Thus SB13 and SB14 should be OFF.
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- SB13 and SB14 Open: PA2 and PA3 on STM32F103C8T6 (ST-LINK MCU) are
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disconnected to PA3 and PA2 on STM32 MCU.
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To configure USART2 as the console:
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CONFIG_STM32_USART2=y
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CONFIG_USART2_SERIALDRIVER=y
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2016-03-25 21:21:24 +01:00
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CONFIG_USART2_SERIAL_CONSOLE=y
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CONFIG_USART2_RXBUFSIZE=256
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CONFIG_USART2_TXBUFSIZE=256
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CONFIG_USART2_BAUD=115200
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CONFIG_USART2_BITS=8
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CONFIG_USART2_PARITY=0
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CONFIG_USART2_2STOP=0
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USART6
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------
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Pins and Connectors:
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RXD: PC7 CN5 pin2, CN10 pin 19
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PA12 CN10, pin 12
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TXD: PC6 CN10, pin 4
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PA11 CN10, pin 14
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To configure USART6 as the console:
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CONFIG_STM32_USART6=y
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CONFIG_USART6_SERIALDRIVER=y
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2016-03-25 21:21:24 +01:00
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CONFIG_USART6_SERIAL_CONSOLE=y
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CONFIG_USART6_RXBUFSIZE=256
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CONFIG_USART6_TXBUFSIZE=256
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CONFIG_USART6_BAUD=115200
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CONFIG_USART6_BITS=8
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CONFIG_USART6_PARITY=0
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CONFIG_USART6_2STOP=0
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Virtual COM Port
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----------------
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Yet another option is to use UART2 and the USB virtual COM port. This
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option may be more convenient for long term development, but is painful
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to use during board bring-up.
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Solder Bridges. This configuration requires:
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- SB62 and SB63 Open: PA2 and PA3 on STM32 MCU are disconnected to D1
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and D0 (pin 7 and pin 8) on Arduino connector CN9 and ST Morpho
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connector CN10.
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- SB13 and SB14 Closed: PA2 and PA3 on STM32F103C8T6 (ST-LINK MCU) are
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connected to PA3 and PA2 on STM32 MCU to have USART communication
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between them. Thus SB61, SB62 and SB63 should be OFF.
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Configuring USART2 is the same as given above.
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Question: What BAUD should be configure to interface with the Virtual
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COM port? 115200 8N1?
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Default
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-------
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As shipped, SB62 and SB63 are open and SB13 and SB14 closed, so the
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virtual COM port is enabled.
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Shields
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=======
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RS-232 from Cutedigi.com
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------------------------
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Supports a single RS-232 connected via
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Nucleo CN9 STM32F4x1RE Cutedigi
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----------- ------------ --------
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Pin 1 PA3 USART2_RX RXD
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Pin 2 PA2 USART2_TX TXD
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Support for this shield is enabled by selecting USART2 and configuring
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SB13, 14, 62, and 63 as described above under "Serial Consoles"
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Itead Joystick Shield
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---------------------
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See http://imall.iteadstudio.com/im120417014.html for more information
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about this joystick.
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Itead Joystick Connection:
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--------- ----------------- ---------------------------------
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ARDUINO ITEAD NUCLEO-F4x1
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PIN NAME SIGNAL SIGNAL
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--------- ----------------- ---------------------------------
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D3 Button E Output PB3
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D4 Button D Output PB5
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D5 Button C Output PB4
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D6 Button B Output PB10
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D7 Button A Output PA8
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D8 Button F Output PA9
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D9 Button G Output PC7
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A0 Joystick Y Output PA0 ADC1_0
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A1 Joystick X Output PA1 ADC1_1
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--------- ----------------- ---------------------------------
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All buttons are pulled on the shield. A sensed low value indicates
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when the button is pressed.
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NOTE: Button F cannot be used with the default USART1 configuration
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because PA9 is configured for USART1_RX by default. Use select
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different USART1 pins in the board.h file or select a different
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USART or select CONFIG_NUCLEO_F401RE_AJOY_MINBUTTONS which will
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eliminate all but buttons A, B, and C.
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Itead Joystick Signal interpretation:
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--------- ----------------------- ---------------------------
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BUTTON TYPE NUTTX ALIAS
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--------- ----------------------- ---------------------------
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Button A Large button A JUMP/BUTTON 3
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Button B Large button B FIRE/BUTTON 2
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Button C Joystick select button SELECT/BUTTON 1
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Button D Tiny Button D BUTTON 6
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Button E Tiny Button E BUTTON 7
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Button F Large Button F BUTTON 4
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Button G Large Button G BUTTON 5
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--------- ----------------------- ---------------------------
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Itead Joystick configuration settings:
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System Type -> STM32 Peripheral Support
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CONFIG_STM32_ADC1=y : Enable ADC1 driver support
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Drivers
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CONFIG_ANALOG=y : Should be automatically selected
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CONFIG_ADC=y : Should be automatically selected
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CONFIG_INPUT=y : Select input device support
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CONFIG_AJOYSTICK=y : Select analog joystick support
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There is nothing in the configuration that currently uses the joystick.
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For testing, you can add the following configuration options to enable the
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analog joystick example at apps/examples/ajoystick:
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CONFIG_NSH_ARCHINIT=y
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CONFIG_EXAMPLES_AJOYSTICK=y
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CONFIG_EXAMPLES_AJOYSTICK_DEVNAME="/dev/ajoy0"
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CONFIG_EXAMPLES_AJOYSTICK_SIGNO=13
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|
STATUS:
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2014-12-04:
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- Without ADC DMA support, it is not possible to sample both X and Y
|
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|
with a single ADC. Right now, only one axis is being converted.
|
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|
|
- There is conflicts with some of the Arduino data pins and the
|
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|
|
default USART1 configuration. I am currently running with USART1
|
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|
but with CONFIG_NUCLEO_F401RE_AJOY_MINBUTTONS to eliminate the
|
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|
|
conflict.
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- Current showstopper: I appear to be getting infinite interrupts as
|
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|
soon as joystick button interrupts are enabled.
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|
|
Configurations
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|
|
==============
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2017-08-17 17:15:12 +02:00
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|
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knsh:
|
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|
|
----
|
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This is identical to the nsh configuration below except that (1) NuttX
|
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|
|
is built as a PROTECTED mode, monolithic module and the user applications
|
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|
|
are built separately and, as a consequence, (2) some features that are
|
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|
|
only availabled in the FLAT build are disabled.
|
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It is recommends to use a special make command; not just 'make' but make
|
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|
|
with the following two arguments:
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make pass1 pass2
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In the normal case (just 'make'), make will attempt to build both user-
|
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|
|
and kernel-mode blobs more or less interleaved. That actual works!
|
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|
|
However, for me it is very confusing so I prefer the above make command:
|
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|
|
Make the user-space binaries first (pass1), then make the kernel-space
|
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|
|
binaries (pass2)
|
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|
NOTES:
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|
|
1. At the end of the build, there will be several files in the top-level
|
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|
|
NuttX build directory:
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|
|
PASS1:
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|
|
nuttx_user.elf - The pass1 user-space ELF file
|
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|
|
nuttx_user.hex - The pass1 Intel HEX format file (selected in defconfig)
|
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|
|
User.map - Symbols in the user-space ELF file
|
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|
|
PASS2:
|
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|
|
nuttx - The pass2 kernel-space ELF file
|
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|
|
nuttx.hex - The pass2 Intel HEX file (selected in defconfig)
|
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|
|
System.map - Symbols in the kernel-space ELF file
|
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|
|
The J-Link programmer will except files in .hex, .mot, .srec, and .bin
|
|
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|
|
formats.
|
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|
|
2. Combining .hex files. If you plan to use the .hex files with your
|
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|
|
|
debugger or FLASH utility, then you may need to combine the two hex
|
|
|
|
|
files into a single .hex file. Here is how you can do that.
|
|
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|
|
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|
|
a. The 'tail' of the nuttx.hex file should look something like this
|
|
|
|
|
(with my comments added):
|
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|
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|
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|
|
|
|
$ tail nuttx.hex
|
|
|
|
|
# 00, data records
|
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|
|
...
|
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|
|
:10 9DC0 00 01000000000800006400020100001F0004
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|
|
:10 9DD0 00 3B005A0078009700B500D400F300110151
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|
|
:08 9DE0 00 30014E016D0100008D
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|
|
# 05, Start Linear Address Record
|
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|
|
:04 0000 05 0800 0419 D2
|
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|
|
# 01, End Of File record
|
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|
|
:00 0000 01 FF
|
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|
|
|
|
|
|
|
Use an editor such as vi to remove the 05 and 01 records.
|
|
|
|
|
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|
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|
|
b. The 'head' of the nuttx_user.hex file should look something like
|
|
|
|
|
this (again with my comments added):
|
|
|
|
|
|
|
|
|
|
$ head nuttx_user.hex
|
|
|
|
|
# 04, Extended Linear Address Record
|
|
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|
|
:02 0000 04 0801 F1
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|
|
# 00, data records
|
|
|
|
|
:10 8000 00 BD89 01084C800108C8110208D01102087E
|
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|
|
:10 8010 00 0010 00201C1000201C1000203C16002026
|
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|
|
:10 8020 00 4D80 01085D80010869800108ED83010829
|
|
|
|
|
...
|
|
|
|
|
|
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|
|
Nothing needs to be done here. The nuttx_user.hex file should
|
|
|
|
|
be fine.
|
|
|
|
|
|
|
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|
|
c. Combine the edited nuttx.hex and un-edited nuttx_user.hex
|
|
|
|
|
file to produce a single combined hex file:
|
|
|
|
|
|
|
|
|
|
$ cat nuttx.hex nuttx_user.hex >combined.hex
|
|
|
|
|
|
|
|
|
|
Then use the combined.hex file with the to write the FLASH image.
|
|
|
|
|
If you do this a lot, you will probably want to invest a little time
|
|
|
|
|
to develop a tool to automate these steps.
|
|
|
|
|
|
2016-07-08 00:21:11 +02:00
|
|
|
nsh:
|
|
|
|
|
---
|
2016-03-25 21:21:24 +01:00
|
|
|
Configures the NuttShell (nsh) located at apps/examples/nsh for the
|
|
|
|
|
Nucleo-F401RE board. The Configuration enables the serial interfaces
|
|
|
|
|
on UART2. Support for builtin applications is enabled, but in the base
|
|
|
|
|
configuration no builtin applications are selected (see NOTES below).
|
|
|
|
|
|
|
|
|
|
NOTES:
|
|
|
|
|
|
|
|
|
|
1. This configuration uses the mconf-based configuration tool. To
|
|
|
|
|
change this configuration 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.
|
|
|
|
|
|
2016-07-08 00:21:11 +02:00
|
|
|
2. By default, this configuration uses the Generic ARM EABI toolchain
|
2016-03-25 21:21:24 +01:00
|
|
|
for Linux. That can easily be reconfigured, of course.
|
|
|
|
|
|
2016-07-08 00:21:11 +02:00
|
|
|
CONFIG_HOST_LINUX=y : Builds under Linux
|
|
|
|
|
CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIL=y : Generic EABI toolchain for Linux
|
2016-03-25 21:21:24 +01:00
|
|
|
|
|
|
|
|
3. Although the default console is USART2 (which would correspond to
|
|
|
|
|
the Virtual COM port) I have done all testing with the console
|
|
|
|
|
device configured for USART1 (see instruction above under "Serial
|
2016-07-08 00:21:11 +02:00
|
|
|
Consoles). I have been using a TTL-to-RS-232 converter.
|
|
|
|
|
|
|
|
|
|
4. This example has been used to verify the OTGFS functionality. USB is
|
|
|
|
|
not enabled in the default configuration but can be enabled with the
|
|
|
|
|
following settings:
|
|
|
|
|
|
|
|
|
|
CONFIG_STM32L4_OTGFS=y
|
|
|
|
|
|
|
|
|
|
CONFIG_USBDEV=y
|
|
|
|
|
CONFIG_USBDEV_SELFPOWERED=y
|
|
|
|
|
|
|
|
|
|
These will enable the USB CDC/ACM serial device
|
|
|
|
|
|
|
|
|
|
CONFIG_CDCACM=y
|
|
|
|
|
CONFIG_CDCACM_EP0MAXPACKET=64
|
|
|
|
|
CONFIG_CDCACM_EPINTIN=1
|
|
|
|
|
CONFIG_CDCACM_EPINTIN_FSSIZE=64
|
|
|
|
|
CONFIG_CDCACM_EPINTIN_HSSIZE=64
|
|
|
|
|
CONFIG_CDCACM_EPBULKOUT=3
|
|
|
|
|
CONFIG_CDCACM_EPBULKOUT_FSSIZE=64
|
|
|
|
|
CONFIG_CDCACM_EPBULKOUT_HSSIZE=512
|
|
|
|
|
CONFIG_CDCACM_EPBULKIN=2
|
|
|
|
|
CONFIG_CDCACM_EPBULKIN_FSSIZE=64
|
|
|
|
|
CONFIG_CDCACM_EPBULKIN_HSSIZE=512
|
|
|
|
|
CONFIG_CDCACM_NRDREQS=4
|
|
|
|
|
CONFIG_CDCACM_NWRREQS=4
|
|
|
|
|
CONFIG_CDCACM_BULKIN_REQLEN=96
|
|
|
|
|
CONFIG_CDCACM_RXBUFSIZE=257
|
|
|
|
|
CONFIG_CDCACM_TXBUFSIZE=193
|
|
|
|
|
CONFIG_CDCACM_VENDORID=0x0525
|
|
|
|
|
CONFIG_CDCACM_PRODUCTID=0xa4a7
|
|
|
|
|
CONFIG_CDCACM_VENDORSTR="NuttX"
|
|
|
|
|
CONFIG_CDCACM_PRODUCTSTR="CDC/ACM Serial"
|
|
|
|
|
|
|
|
|
|
CONFIG_SERIAL_REMOVABLE=y
|
|
|
|
|
|
|
|
|
|
These will enable the USB serial example at apps/examples/usbserial
|
|
|
|
|
|
|
|
|
|
CONFIG_BOARDCTL_USBDEVCTRL=y
|
|
|
|
|
|
|
|
|
|
CONFIG_EXAMPLES_USBSERIAL=y
|
|
|
|
|
CONFIG_EXAMPLES_USBSERIAL_BUFSIZE=512
|
|
|
|
|
CONFIG_EXAMPLES_USBSERIAL_TRACEINIT=y
|
|
|
|
|
CONFIG_EXAMPLES_USBSERIAL_TRACECLASS=y
|
|
|
|
|
CONFIG_EXAMPLES_USBSERIAL_TRACETRANSFERS=y
|
|
|
|
|
CONFIG_EXAMPLES_USBSERIAL_TRACECONTROLLER=y
|
|
|
|
|
CONFIG_EXAMPLES_USBSERIAL_TRACEINTERRUPTS=y
|
|
|
|
|
|
|
|
|
|
Optional USB debug features:
|
|
|
|
|
|
|
|
|
|
CONFIG_DEBUG_FEATURES=y
|
|
|
|
|
CONFIG_DEBUG_USB=y
|
|
|
|
|
CONFIG_ARCH_USBDUMP=y
|
|
|
|
|
CONFIG_USBDEV_TRACE=y
|
|
|
|
|
CONFIG_USBDEV_TRACE_NRECORDS=128
|
|
|
|
|
CONFIG_USBDEV_TRACE_STRINGS=y
|
|
|
|
|
CONFIG_USBDEV_TRACE_INITIALIDSET=y
|
|
|
|
|
|
|
|
|
|
CONFIG_NSH_USBDEV_TRACE=y
|
|
|
|
|
CONFIG_NSH_USBDEV_TRACEINIT=y
|
|
|
|
|
CONFIG_NSH_USBDEV_TRACECLASS=y
|
|
|
|
|
CONFIG_NSH_USBDEV_TRACETRANSFERS=y
|
|
|
|
|
CONFIG_NSH_USBDEV_TRACECONTROLLER=y
|
|
|
|
|
CONFIG_NSH_USBDEV_TRACEINTERRUPTS=y
|
