1.. _96b_aerocore2_board: 2 396Boards Aerocore2 4################## 5 6Overview 7******** 8 9The 96Boards Aerocore2 Mezzanine is based on the STMicroelectronics 10STM32F427VIT6 Cortex-M4 CPU primarily designed for use in drones. 11This board acts as a mezzanine platform for all 96Boards CE compliant 12boards. It can also be used as a standalone board. 13 14 15.. figure:: img/96b_aerocore2.jpg 16 :align: center 17 :alt: 96Boards Aerocore2 18 19 96Boards Aerocore2 20 21Hardware 22******** 23 2496Boards Aerocore2 provides the following hardware components: 25 26- STM32F427VIT6 in LQFP100 package 27- ARM |reg| 32-bit Cortex |reg|-M4 CPU with FPU 28- 168 MHz max CPU frequency 29- VDD from 1.7 V to 3.6 V 30- 2048 KB Flash 31- 256 KB SRAM 32- GPIO with external interrupt capability 33- 12-bit ADC with 16 channels 34- RTC 35- Advanced-control Timers (2) 36- General Purpose Timers (10) 37- Watchdog Timers (2) 38- USART/UART (4) 39- I2C (3) 40- SPI (3) 41- SDIO 42- USB 2.0 OTG FS 43- DMA Controller 44 45More information about STM32F427VIT6 can be found here: 46 - `STM32F427 on www.st.com`_ 47 48Supported Features 49================== 50 51The Zephyr 96b_aerocore2 board configuration supports the following hardware 52features: 53 54+------------+------------+-------------------------------------+ 55| Interface | Controller | Driver/Component | 56+============+============+=====================================+ 57| NVIC | on-chip | nested vector interrupt controller | 58+------------+------------+-------------------------------------+ 59| SYSTICK | on-chip | system clock | 60+------------+------------+-------------------------------------+ 61| UART | on-chip | serial port | 62+------------+------------+-------------------------------------+ 63| GPIO | on-chip | gpio | 64+------------+------------+-------------------------------------+ 65| PINMUX | on-chip | pinmux | 66+------------+------------+-------------------------------------+ 67| FLASH | on-chip | flash | 68+------------+------------+-------------------------------------+ 69| SPI | on-chip | spi | 70+------------+------------+-------------------------------------+ 71| I2C | on-chip | i2c | 72+------------+------------+-------------------------------------+ 73| PWM | on-chip | timers / pwm | 74+------------+------------+-------------------------------------+ 75| USB OTG FS | on-chip | USB device | 76+------------+------------+-------------------------------------+ 77| ADC | on-chip | adc | 78+------------+------------+-------------------------------------+ 79 80More details about the board can be found at `96Boards website`_. 81 82The default configuration can be found in 83:zephyr_file:`boards/96boards/aerocore2/96b_aerocore2_defconfig` 84 85Connections and IOs 86=================== 87 88LED 89--- 90 91- LED1 / User1 LED = PE10 92- LED2 / User2 LED = PE9 93 94External Connectors 95------------------- 96 97Octal PWM Header (J1) 98 99+-------+-------------+-------------------------+-------+-------------+-------+-------------+ 100| PIN # | Signal Name | STM32F427 Functions Pin | PIN # | Signal Name | Pin # | Signal Name | 101+=======+=============+=========================+=======+=============+=======+=============+ 102| 1 | PWM4_CH1 | PD12 | 2 | 5.0v | 3 | GND | 103+-------+-------------+-------------------------+-------+-------------+-------+-------------+ 104| 4 | PWM4_CH2 | PD13 | 5 | 5.0v | 6 | GND | 105+-------+-------------+-------------------------+-------+-------------+-------+-------------+ 106| 7 | PWM4_CH3 | PD14 | 8 | 5.0v | 9 | GND | 107+-------+-------------+-------------------------+-------+-------------+-------+-------------+ 108| 10 | PWM4_CH4 | PD15 | 11 | 5.0v | 12 | GND | 109+-------+-------------+-------------------------+-------+-------------+-------+-------------+ 110| 13 | PWM5_CH1 | PA0 | 14 | 5.0v | 15 | GND | 111+-------+-------------+-------------------------+-------+-------------+-------+-------------+ 112| 16 | PWM5_CH2 | PA1 | 17 | 5.0v | 18 | GND | 113+-------+-------------+-------------------------+-------+-------------+-------+-------------+ 114| 19 | PWM5_CH3 | PA2 | 20 | 5.0v | 21 | GND | 115+-------+-------------+-------------------------+-------+-------------+-------+-------------+ 116| 22 | PWM5_CH4 | PA3 | 23 | 5.0v | 24 | GND | 117+-------+-------------+-------------------------+-------+-------------+-------+-------------+ 118 119 120IO Header J11 121 122+-------+-------------+-------+-------------+ 123| PIN # | Signal Name | PIN # | Signal Name | 124+=======+=============+=======+=============+ 125| 1 | PB9 | 2 | PB8* | 126+-------+-------------+-------+-------------+ 127| 3 | PC9 | 4 | PB0 | 128+-------+-------------+-------+-------------+ 129| 5 | PE5 | 6 | NA | 130+-------+-------------+-------+-------------+ 131| 7 | PE6 | 8 | NA | 132+-------+-------------+-------+-------------+ 133| 9 | PC6 | 10 | NA | 134+-------+-------------+-------+-------------+ 135| 11 | PC7 | 12 | NA | 136+-------+-------------+-------+-------------+ 137| 13 | PC8 | 14 | NA | 138+-------+-------------+-------+-------------+ 139| 15 | PA8 | 16 | GND | 140+-------+-------------+-------+-------------+ 141| 17 | PA9 | 18 | 3v3 | 142+-------+-------------+-------+-------------+ 143| 19 | PA10 | 20 | GND | 144+-------+-------------+-------+-------------+ 145 146* PB8 is connected to a watchdog buzzer, It needs to be pulsed every 10 seconds to keep the buzzer silent. 147 148IO Header J5 149 150+-------+-------------+-------------------------+-------+-------------+-------------------------+ 151| PIN # | Signal Name | STM32F427 Functions Pin | PIN # | Signal Name | STM32F427 Functions Pin | 152+=======+=============+=========================+=======+=============+=========================+ 153| 1 | AGND | AGND | 2 | ADC1_13 | PC3 | 154+-------+-------------+-------------------------+-------+-------------+-------------------------+ 155| 3 | ADC1_12 | PC2 | 4 | ADC1_11 | PC1 | 156+-------+-------------+-------------------------+-------+-------------+-------------------------+ 157| 5 | I2C_SDA | PB11 | 6 | GND | GND | 158+-------+-------------+-------------------------+-------+-------------+-------------------------+ 159| 7 | I2C_SCL | PB10 | 8 | VCC 3v3 | VCC 3v3 | 160+-------+-------------+-------------------------+-------+-------------+-------------------------+ 161| 9 | NC | NC | 10 | NC | NC | 162+-------+-------------+-------------------------+-------+-------------+-------------------------+ 163| 11 | NC | NC | 12 | NC | NC | 164+-------+-------------+-------------------------+-------+-------------+-------------------------+ 165| 13 | UART_TX 7 | PE8 | 14 | GND | GND | 166+-------+-------------+-------------------------+-------+-------------+-------------------------+ 167| 15 | UART_RX 7 | PE7 | 16 | GND | GND | 168+-------+-------------+-------------------------+-------+-------------+-------------------------+ 169| 17 | UART_TX 2 | PD5 | 18 | GND | GND | 170+-------+-------------+-------------------------+-------+-------------+-------------------------+ 171| 19 | UART_TX 2 | PD6 | 20 | GND | GND | 172+-------+-------------+-------------------------+-------+-------------+-------------------------+ 173| 21 | NC | NC | 10 | NC | NC | 174+-------+-------------+-------------------------+-------+-------------+-------------------------+ 175| 23 | NC | NC | 10 | NC | NC | 176+-------+-------------+-------------------------+-------+-------------+-------------------------+ 177| 25 | SPI1_NIRQ | PC5 | 26 | GND | GND | 178+-------+-------------+-------------------------+-------+-------------+-------------------------+ 179| 27 | SPI1_CLK | PA5 | 28 | SPI1_MISO | PA6 | 180+-------+-------------+-------------------------+-------+-------------+-------------------------+ 181| 29 | SPI1_CS0 | PA4 | 30 | SPI1_MOSI | PA7 | 182+-------+-------------+-------------------------+-------+-------------+-------------------------+ 183| 31 | CAN_TX | PD1 | 32 | CANH | NC | 184+-------+-------------+-------------------------+-------+-------------+-------------------------+ 185| 33 | CAN_RX | PD0 | 34 | CANL | NC | 186+-------+-------------+-------------------------+-------+-------------+-------------------------+ 187 188 189GPS connector J15 190 191+-------+-------------+-------------------------+ 192| PIN # | Signal Name | STM32F427 Functions Pin | 193+=======+=============+=========================+ 194| 1 | V_OUT 5v | NC | 195+-------+-------------+-------------------------+ 196| 2 | UART1_TX | PB6 | 197+-------+-------------+-------------------------+ 198| 3 | UART1_RX | PB7 | 199+-------+-------------+-------------------------+ 200| 4 | VCC 3v3 | NC | 201+-------+-------------+-------------------------+ 202| 5 | GND | GND | 203+-------+-------------+-------------------------+ 204 205 206Spektrum connector J3 207 208+-------+-------------+-------------------------+ 209| PIN # | Signal Name | STM32F427 Functions Pin | 210+=======+=============+=========================+ 211| 1 | VCC 3v3 | NC | 212+-------+-------------+-------------------------+ 213| 2 | GND | GND | 214+-------+-------------+-------------------------+ 215| 3 | UART8_RX | PE0 | 216+-------+-------------+-------------------------+ 217 218 219External Clock Sources 220---------------------- 221 222STM32F4 has one external oscillator. The frequency of the clock is 22332.768 kHz. The internal 16MHz clock is used as the main clock. 224 225Serial Port 226----------- 227 22896Boards Aerocore2 board has up to 4 U(S)ARTs. The Zephyr console output is 229assigned to USART7. Default settings are 115200 8N1. 230 231I2C 232--- 233 23496Boards Aerocore2 board has 1 I2C port. The default I2C mapping for Zephyr is: 235 236- I2C1_SCL : PB10 237- I2C1_SDA : PB11 238 239SPI 240--- 241 24296Boards Aerocore2 board has 1 SPI port. The default SPI mapping for Zephyr is: 243 244- SPI1_CS0 : PA4 245- SPI1_SCK : PA5 246- SPI1_MISO : PA6 247- SPI1_MOSI : PA7 248 249USB 250=== 251 25296Boards Aerocore2 board has a USB OTG dual-role device (DRD) controller that 253supports both device and host functions through its mini "OTG" USB connector. 254Only USB device functions are supported in Zephyr at the moment. 255 256Programming and Debugging 257************************* 258 259There are 2 main entry points for flashing STM32F4X SoCs, one using the ROM 260bootloader, and another by using the SWD debug port (which requires additional 261hardware). Flashing using the ROM bootloader requires a special activation 262pattern, which can be triggered by using the BOOT0 pin. The ROM bootloader 263supports flashing via USB (DFU), UART, I2C and SPI. You can read more about 264how to enable and use the ROM bootloader by checking the application 265note `AN2606`_, page 109. 266 267Flashing 268======== 269 270Installing dfu-util 271------------------- 272 273It is recommended to use at least v0.8 of `dfu-util`_. The package available in 274debian/ubuntu can be quite old, so you might have to build dfu-util from source. 275 276Flashing an Application to 96Boards Aerocore2 277--------------------------------------------- 278 279Connect the micro-USB cable to the USB OTG/STM_CONSOLE Aerocore2 port and to your computer. 280The board should power ON. Force the board into DFU mode by keeping the BOOT0 281switch pressed while pressing and releasing the RST switch. 282 283The BOOT button is located at the back-side of the PCB. 284 285Confirm that the board is in DFU mode: 286 287.. code-block:: console 288 289 $ sudo dfu-util -l 290 dfu-util 0.8 291 Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc. 292 Copyright 2010-2014 Tormod Volden and Stefan Schmidt 293 This program is Free Software and has ABSOLUTELY NO WARRANTY 294 Please report bugs to dfu-util@lists.gnumonks.org 295 Found DFU: [0483:df11] ver=2200, devnum=15, cfg=1, intf=0, alt=3, name="@Device Feature/0xFFFF0000/01*004 e", serial="3574364C3034" 296 Found DFU: [0483:df11] ver=2200, devnum=15, cfg=1, intf=0, alt=2, name="@OTP Memory /0x1FFF7800/01*512 e,01*016 e", serial="3574364C3034" 297 Found DFU: [0483:df11] ver=2200, devnum=15, cfg=1, intf=0, alt=1, name="@Option Bytes /0x1FFFC000/01*016 e", serial="3574364C3034" 298 Found DFU: [0483:df11] ver=2200, devnum=15, cfg=1, intf=0, alt=0, name="@Internal Flash /0x08000000/04*016Kg,01*064Kg,03*128Kg", serial="3574364C3034" 299 Found Runtime: [05ac:8290] ver=0104, devnum=2, cfg=1, intf=5, alt=0, name="UNKNOWN", serial="UNKNOWN" 300 301You should see following confirmation on your Linux host: 302 303.. code-block:: console 304 305 $ dmesg 306 usb 1-2.1: new full-speed USB device number 14 using xhci_hcd 307 usb 1-2.1: New USB device found, idVendor=0483, idProduct=df11 308 usb 1-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 309 usb 1-2.1: Product: STM32 BOOTLOADER 310 usb 1-2.1: Manufacturer: STMicroelectronics 311 usb 1-2.1: SerialNumber: 3574364C3034 312 313Then build and flash an application. Here is an example for the 314:zephyr:code-sample:`hello_world` application. 315 316.. zephyr-app-commands:: 317 :zephyr-app: samples/hello_world 318 :board: 96b_aerocore2 319 :goals: build flash 320 321Connect a USB-TTL dongle to the UART_7 header port and to your computer. 322Run your favorite terminal program to listen for output. 323 324.. code-block:: console 325 326 $ minicom -D <tty_device> -b 115200 327 328Replace :code:`<tty_device>` with the port where the board 96Boards Aerocore2 329can be found. For example, under Linux, :code:`/dev/ttyUSB0`. 330The ``-b`` option sets baud rate ignoring the value from config. 331 332Press the Reset button and you should see the following message in your 333terminal: 334 335.. code-block:: console 336 337 Hello World! arm 338 339.. _96Boards website: 340 https://www.96boards.org/product/aerocore2/ 341 342.. _STM32F427 on www.st.com: 343 https://www.st.com/en/microcontrollers-microprocessors/stm32f427vi.html 344 345.. _dfu-util: 346 http://dfu-util.sourceforge.net/build.html 347 348.. _AN2606: 349 https://www.st.com/content/ccc/resource/technical/document/application_note/b9/9b/16/3a/12/1e/40/0c/CD00167594.pdf/files/CD00167594.pdf/jcr:content/translations/en.CD00167594.pdf 350
