================ ST Nucleo F446RE ================ This page discusses issues unique to NuttX configurations for the ST NucleoF446RE boards from ST Micro. See https://www.st.com/en/evaluation-tools/nucleo-f446re.html NucleoF446RE: - Microprocessor: 32-bit ARM Cortex M4 at 180MHz STM32F446RE - Memory: 512 KB Flash and 128 KB SRAM - ADC: 1×12-bit, 2.4 MSPS A/D converter: up to 10 channels - DMA: 16-stream DMA controllers with FIFOs and burst support - Timers: Up to 11 timers: up to six 16-bit, two 32-bit timers, two watchdog timers, and a SysTick timer - GPIO: Up to 81 I/O ports with interrupt capability - I2C: Up to 3 × I2C interfaces - USARTs: Up to 3 USARTs - USARTs: Up to 3 USARTs - SPIs: Up to 4 SPIs (2 I2S) - SDIO interface - USB: USB 2.0 full-speed device/host/OTG controller with on-chip PHY - CRC calculation unit - RTC The NucleoF446RE also has additional DMA and SPI peripheral capabilities. Board features, however, are identical: - Peripherals: 1 led, 1 push button - Debug: Serial wire debug and JTAG interfaces - Expansion I/F Ardino and Morpho Headers Uses a STM32F103 to provide a ST-Link for programming, debug similar to the OpenOcd FTDI function - USB to JTAG front-end. See https://os.mbed.com/platforms/ST-Nucleo-F446RE/ for more information about this board. mbed ==== The Nucleo-F401RE includes boot loader from mbed: https://mbed.org/platforms/ST-Nucleo-F401RE/ https://mbed.org/handbook/Homepage Using the mbed loader: 1. Connect the Nucleo-F4x1RE to the host PC using the USB connector. 2. A new file system will appear called NUCLEO; open it with Windows Explorer (assuming that you are using Windows). 3. Drag and drop nuttx.bin into the MBED window. This will load the nuttx.bin binary into the Nucleo-F4x1RE. The NUCLEO window will close then re-open and the Nucleo-F4x1RE will be running the new code. Hardware ======== .. GPIO ---- SERIAL_TX=PA_2 USER_BUTTON=PC_13 SERIAL_RX=PA_3 LED1 =PA_5 A0=PA_0 USART2RX D0=PA_3 D8 =PA_9 A1=PA_1 USART2TX D1=PA_2 D9 =PC_7 A2=PA_4 D2=PA_10 WIFI_CS=D10=PB_6 SPI_CS A3=PB_0 WIFI_INT=D3=PB_3 D11=PA_7 SPI_MOSI A4=PC_1 SDCS=D4=PB_5 D12=PA_6 SPI_MISO A5=PC_0 WIFI_EN=D5=PB_4 LED1=D13=PA_5 SPI_SCK LED2=D6=PB_10 I2C1_SDA=D14=PB_9 Probe D7=PA_8 I2C1_SCL=D15=PB_8 Probe From: https://mbed.org/platforms/ST-Nucleo-F401RE/ Buttons ------- B1 USER: the user button is connected to the I/O PC13 (pin 2) of the STM32 microcontroller. LEDs ---- The Nucleo F446RE provides a single user LED, LD2. LD2 is the green LED connected to Arduino signal D13 corresponding to MCU I/O PA5 (pin 21) or PB13 (pin 34) depending on the STM32target. - When the I/O is HIGH value, the LED is on. - When the I/O is LOW, the LED is off. These LEDs are 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/sam_leds.c. The LEDs are used to encode OS-related events as follows when the red LED (PE24) is available:: SYMBOL Meaning LD2 ------------------- ----------------------- ----------- 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 No change LED_SIGNAL In a signal handler No change LED_ASSERTION An assertion failed No change LED_PANIC The system has crashed Blinking LED_IDLE MCU is is sleep mode Not used Thus if LD2, NuttX has successfully booted and is, apparently, running normally. If LD2 is flashing at approximately 2Hz, then a fatal error has been detected and the system has halted. Serial Consoles =============== USART1 ------ Pins and Connectors:: RXD: PA11 CN10 pin 14 PB7 CN7 pin 21 TXD: PA10 CN9 pin 3, CN10 pin 33 PB6 CN5 pin 3, CN10 pin 17 NOTE: You may need to edit the include/board.h to select different USART1 pin selections. TTL to RS-232 converter connection:: Nucleo CN10 STM32F4x1RE ----------- ------------ Pin 21 PA9 USART1_RX *Warning you make need to reverse RX/TX on Pin 33 PA10 USART1_TX some RS-232 converters Pin 20 GND Pin 8 U5V To configure USART1 as the console:: CONFIG_STM32_USART1=y CONFIG_USART1_SERIALDRIVER=y CONFIG_USART1_SERIAL_CONSOLE=y CONFIG_USART1_RXBUFSIZE=256 CONFIG_USART1_TXBUFSIZE=256 CONFIG_USART1_BAUD=115200 CONFIG_USART1_BITS=8 CONFIG_USART1_PARITY=0 CONFIG_USART1_2STOP=0 USART2 ------ Pins and Connectors:: RXD: PA3 CN9 pin 1 (See SB13, 14, 62, 63). CN10 pin 37 PD6 TXD: PA2 CN9 pin 2(See SB13, 14, 62, 63). CN10 pin 35 PD5 UART2 is the default in all of these configurations. TTL to RS-232 converter connection:: Nucleo CN9 STM32F4x1RE ----------- ------------ Pin 1 PA3 USART2_RX *Warning you make need to reverse RX/TX on Pin 2 PA2 USART2_TX some RS-232 converters Solder Bridges. This configuration requires: - SB62 and SB63 Closed: PA2 and PA3 on STM32 MCU are connected to D1 and D0 (pin 7 and pin 8) on Arduino connector CN9 and ST Morpho connector CN10 as USART signals. Thus SB13 and SB14 should be OFF. - SB13 and SB14 Open: PA2 and PA3 on STM32F103C8T6 (ST-LINK MCU) are disconnected to PA3 and PA2 on STM32 MCU. To configure USART2 as the console:: CONFIG_STM32_USART2=y CONFIG_USART2_SERIALDRIVER=y CONFIG_USART2_SERIAL_CONSOLE=y CONFIG_USART2_RXBUFSIZE=256 CONFIG_USART2_TXBUFSIZE=256 CONFIG_USART2_BAUD=115200 CONFIG_USART2_BITS=8 CONFIG_USART2_PARITY=0 CONFIG_USART2_2STOP=0 USART6 ------ Pins and Connectors:: RXD: PC7 CN5 pin2, CN10 pin 19 PA12 CN10, pin 12 TXD: PC6 CN10, pin 4 PA11 CN10, pin 14 To configure USART6 as the console:: CONFIG_STM32_USART6=y CONFIG_USART6_SERIALDRIVER=y CONFIG_USART6_SERIAL_CONSOLE=y CONFIG_USART6_RXBUFSIZE=256 CONFIG_USART6_TXBUFSIZE=256 CONFIG_USART6_BAUD=115200 CONFIG_USART6_BITS=8 CONFIG_USART6_PARITY=0 CONFIG_USART6_2STOP=0 Virtual COM Port ---------------- Yet another option is to use UART2 and the USB virtual COM port. This option may be more convenient for long term development, but is painful to use during board bring-up. Solder Bridges. This configuration requires: - SB62 and SB63 Open: PA2 and PA3 on STM32 MCU are disconnected to D1 and D0 (pin 7 and pin 8) on Arduino connector CN9 and ST Morpho connector CN10. - SB13 and SB14 Closed: PA2 and PA3 on STM32F103C8T6 (ST-LINK MCU) are connected to PA3 and PA2 on STM32 MCU to have USART communication between them. Thus SB61, SB62 and SB63 should be OFF. Configuring USART2 is the same as given above. Question: What BAUD should be configure to interface with the Virtual COM port? 115200 8N1? Default ------- As shipped, SB62 and SB63 are open and SB13 and SB14 closed, so the virtual COM port is enabled. Shields ======= RS-232 from Cutedigi.com ------------------------ Supports a single RS-232 connected via:: Nucleo CN9 STM32F4x1RE Cutedigi ----------- ------------ -------- Pin 1 PA3 USART2_RX RXD Pin 2 PA2 USART2_TX TXD Support for this shield is enabled by selecting USART2 and configuring SB13, 14, 62, and 63 as described above under "Serial Consoles" Itead Joystick Shield --------------------- See http://imall.iteadstudio.com/im120417014.html for more information about this joystick. Itead Joystick Connection:: --------- ----------------- --------------------------------- ARDUINO ITEAD NUCLEO-F4x1 PIN NAME SIGNAL SIGNAL --------- ----------------- --------------------------------- D3 Button E Output PB3 D4 Button D Output PB5 D5 Button C Output PB4 D6 Button B Output PB10 D7 Button A Output PA8 D8 Button F Output PA9 D9 Button G Output PC7 A0 Joystick Y Output PA0 ADC1_0 A1 Joystick X Output PA1 ADC1_1 --------- ----------------- --------------------------------- All buttons are pulled on the shield. A sensed low value indicates when the button is pressed. NOTE: Button F cannot be used with the default USART1 configuration because PA9 is configured for USART1_RX by default. Use select different USART1 pins in the board.h file or select a different USART or select CONFIG_NUCLEO_F401RE_AJOY_MINBUTTONS which will eliminate all but buttons A, B, and C. Itead Joystick Signal interpretation:: --------- ----------------------- --------------------------- BUTTON TYPE NUTTX ALIAS --------- ----------------------- --------------------------- Button A Large button A JUMP/BUTTON 3 Button B Large button B FIRE/BUTTON 2 Button C Joystick select button SELECT/BUTTON 1 Button D Tiny Button D BUTTON 6 Button E Tiny Button E BUTTON 7 Button F Large Button F BUTTON 4 Button G Large Button G BUTTON 5 --------- ----------------------- --------------------------- Itead Joystick configuration settings:: System Type -> STM32 Peripheral Support CONFIG_STM32_ADC1=y : Enable ADC1 driver support Drivers CONFIG_ANALOG=y : Should be automatically selected CONFIG_ADC=y : Should be automatically selected CONFIG_INPUT=y : Select input device support CONFIG_INPUT_AJOYSTICK=y : Select analog joystick support There is nothing in the configuration that currently uses the joystick. For testing, you can add the following configuration options to enable the analog joystick example at apps/examples/ajoystick:: CONFIG_NSH_ARCHINIT=y CONFIG_EXAMPLES_AJOYSTICK=y CONFIG_EXAMPLES_AJOYSTICK_DEVNAME="/dev/ajoy0" STATUS: 2014-12-04: - Without ADC DMA support, it is not possible to sample both X and Y with a single ADC. Right now, only one axis is being converted. - There is conflicts with some of the Arduino data pins and the default USART1 configuration. I am currently running with USART1 but with CONFIG_NUCLEO_F401RE_AJOY_MINBUTTONS to eliminate the conflict. - Current showstopper: I appear to be getting infinite interrupts as soon as joystick button interrupts are enabled. Configurations ============== nsh: ---- Configures the NuttShell (nsh) located at apps/examples/nsh for the Nucleo-F446RE 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. 2. By default, this configuration uses the ARM EABI toolchain for Linux. That can easily be reconfigured, of course.:: CONFIG_HOST_LINUX=y : Builds under Linux CONFIG_ARM_TOOLCHAIN_GNU_EABI=y : GNU EABI toolchain for Linux 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 Consoles). I have been using a TTL-to-RS-232 converter connected as shown below:: Nucleo CN10 STM32F446RE ----------- ------------ Pin 21 PA9 USART1_RX *Warning you make need to reverse RX/TX on Pin 33 PA10 USART1_TX some RS-232 converters Pin 20 GND Pin 8 U5V can --- This is basically an nsh configuration (see above) with added support for CAN driver. Both CAN 1 (RX: PB_8, TX: PB_9) and CAN 2 (RX: PB_5, TX: PB_6) are turn on. Functionality of CAN driver can be tested by calling application "can" in NuttShell. This application sends 100 messages over CAN 1. dac --- This is an nsh configuration (see above) with added support for digital analog converter driver. Functionality of DAC driver can be tested by calling application "dac" in NuttShell. GPIO_DAC1_OUT1 pin is set on PA_4. gpio ---- This is an nsh configuration (see above) with added support for GPIO driver and GPIO test application "gpio". Three pins are configured for testing purposes:: PA_7 - GPIO_INPUT PB_6 - GPIO_OUTPUT PC_7 - GPIO_INPUT_INTERRUPT ihm08m1_f32 and ihm08m1_b16 --------------------------- These examples are dedicated for the X-NUCLEO-IHM08M1 expansion board with L6398 gate drivers and discrete transistors. WARNING: L6398 gate drivers require channel 2 negative polarisation and negative sign for the deadtime. Make sure that your gate drivers logic is compatible with this configuration. X-NUCLEO-IHM08M1 must be configured to work with FOC and 3-shunt resistors. See ST documentation for details. Pin configuration for the X-NUCLEO-IHM08M1 (TIM1 configuration):: Board Function Chip Function Chip Pin Number ------------- ---------------- ----------------- Phase U high TIM1_CH1 PA8 Phase U low TIM1_CH1N PA7 Phase V high TIM1_CH2 PA9 Phase V low TIM1_CH2N PB0 Phase W high TIM1_CH3 PA10 Phase W low TIM1_CH3N PB1 Current U ADC1_IN0 PA0 Current V ADC1_IN11 PC1 Current W ADC1_IN10 PC0 Temperature ADC1_IN12 PC2 VBUS ADC1_IN1 PA1 BEMF1 (NU) PC3 BEMF2 (NU) PC4 BEMF3 (NU) PC5 LED GPIO_PB2 PB2 +3V3 (CN7_16) GND (CN7_20) GPIO_BEMF (NU) PC9 ENCO_A/HALL_H1 TIM2_CH1 PA15 ENCO_B/HALL_H2 TIM2_CH2 PB3 ENCO_Z/HALL_H3 TIM2_CH3 PB10 DAC (NU) PA5 GPIO3 (NU) PB13 CPOUT (NU) PA12 BKIN1 (NU) PA6 BKIN2 (NU) PA11 BKIN3 (NU) PB14 POT/DAC DAC1_CH1/ADC1_IN4 PA4 CURR_REF (NU) PB4 DEBUG0 GPIO PB12 DEBUG1 GPIO PB9 DEBUG2 GPIO PC6 DEBUG3 GPIO PB5 DEBUG4 GPIO PC8 Current shunt resistance = 0.01 Current sense gain = -5.18 (inverted current) Vbus sense gain = 9.31k/(9.31k+169k) = 0.0522 Vbus min = 10V Vbus max = 48V Iout max = 15A RMS IPHASE_RATIO = 1/(R_shunt*gain) = -19.3 VBUS_RATIO = 1/VBUS_gain = 19.152 For now only 3-shunt resistors configuration is supported. lcd --- This is basically an nsh configuration (see above) with added support of ILI9225 176x220 TFT display and test framebuffer application. Display connection is set to SPI 3 and pinout is following:: CS D8 RST D6 RS D7 SDA D4 CLK D3 Framebuffer application can be started from terminal by typing "fb". pwm --- This is an nsh configuration (see above) with added capability of pulse width modulation. PWM output is on Timer 3 channel 1, which is pin PA_6 (D12) on Nucleo board. Example program can be stared by "pwm" command.