| .. _stm32l496g_disco_board: |
| |
| ST STM32L496G Discovery |
| ######################## |
| |
| Overview |
| ******** |
| |
| The STM32L496G Discovery board features an ARM Cortex-M4 based STM32L496AG MCU |
| with a wide range of connectivity support and configurations. Here are |
| some highlights of the STM32L496G Discovery board: |
| |
| |
| - STM32L496AGI6 microcontroller featuring 1 Mbyte of Flash memory and 320 Kbytes of RAM in an UFBGA169 package |
| - 1.54 inch 240 x 240 pixel-TFT color LCD with parallel interface |
| - SAI Audio CODEC, with a stereo headset jack, including analog microphone input |
| - Stereo digital MEMS microphones |
| - microSD card connector (card included) |
| - Camera 8 bit-connector |
| - 8 Mbit-PSRAM |
| - IDD measurement |
| - 64 Mbit-Quad-SPI Flash |
| - USB OTG FS with Micro-AB connector |
| - Two types of extension resources: |
| |
| - STMod+ and PMOD connectors |
| - Compatible Arduino* Uno V3 connectors |
| |
| - On-board ST-LINK/V2-1 debugger/programmer with SWD connector |
| - 5 source options for power supply |
| |
| - ST-LINK/V2-1 USB connector |
| - User USB FS connector |
| - VIN from Arduino connector |
| - 5 V from Arduino connector |
| - USB charger |
| - USB VBUS or external source(3.3V, 5V, 7 - 12V) |
| - Power management access point |
| |
| - 8 LEDs |
| - Reset push button |
| - 4 direction-joystick with selection |
| |
| .. image:: img/en.stm32l496g-disco.jpg |
| :width: 450px |
| :align: center |
| :height: 394px |
| :alt: STM32L496G Discovery |
| |
| More information about the board can be found at the `STM32L496G Discovery website`_. |
| |
| Hardware |
| ******** |
| |
| The STM32L496AG SoC provides the following hardware capabilities: |
| |
| - Ultra-low-power with FlexPowerControl (down to 108 nA Standby mode and 91 |
| |micro| A/MHz run mode) |
| - Core: ARM |reg| 32-bit Cortex |reg| -M4 CPU with FPU, frequency up to 80 MHz, |
| 100DMIPS/1.25DMIPS/MHz (Dhrystone 2.1) |
| - Clock Sources: |
| |
| - 4 to 48 MHz crystal oscillator |
| - 32 kHz crystal oscillator for RTC (LSE) |
| - Internal 16 MHz factory-trimmed RC ( |plusminus| 1%) |
| - Internal low-power 32 kHz RC ( |plusminus| 5%) |
| - Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by |
| LSE (better than |plusminus| 0.25 % accuracy) |
| - Internal 48 MHz with clock recovery |
| - 3 PLLs for system clock, USB, audio, ADC |
| |
| - RTC with HW calendar, alarms and calibration |
| - LCD 8 x 40 or 4 x 44 with step-up converter |
| - Up to 24 capacitive sensing channels: support touchkey, linear and rotary touch sensors |
| - 16x timers: |
| |
| - 2x 16-bit advanced motor-control |
| - 2x 32-bit and 5x 16-bit general purpose |
| - 2x 16-bit basic |
| - 2x low-power 16-bit timers (available in Stop mode) |
| - 2x watchdogs |
| - SysTick timer |
| |
| - Up to 136 fast I/Os, most 5 V-tolerant, up to 14 I/Os with independent supply down to 1.08 V |
| - Memories |
| |
| - Up to 1 MB Flash, 2 banks read-while-write, proprietary code readout protection |
| - 320 KB of SRAM including 64 KB with hardware parity check |
| - External memory interface for static memories supporting SRAM, PSRAM, NOR, and NAND memories |
| - Quad SPI memory interface |
| |
| - 4x digital filters for sigma delta modulator |
| - Rich analog peripherals (independent supply) |
| |
| - 3x 12-bit ADC 5 MSPS, up to 16-bit with hardware oversampling, 200 |
| |micro| A/MSPS |
| - 2x 12-bit DAC, low-power sample and hold |
| - 2x operational amplifiers with built-in PGA |
| - 2x ultra-low-power comparators |
| |
| - 20x communication interfaces |
| |
| - USB OTG 2.0 full-speed, LPM and BCD |
| - 2x SAIs (serial audio interface) |
| - 4x I2C FM+(1 Mbit/s), SMBus/PMBus |
| - 5x USARTs (ISO 7816, LIN, IrDA, modem) |
| - 1x LPUART |
| - 3x SPIs (4x SPIs with the Quad SPI) |
| - 2x CAN (2.0B Active) and SDMMC interface |
| - SWPMI single wire protocol master I/F |
| - IRTIM (Infrared interface) |
| |
| - 14-channel DMA controller |
| - True random number generator |
| - CRC calculation unit, 96-bit unique ID |
| - Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell* |
| |
| |
| More information about STM32L496AG can be found here: |
| - `STM32L496AG on www.st.com`_ |
| - `STM32L496 reference manual`_ |
| |
| Supported Features |
| ================== |
| |
| The Zephyr stm32l496g_disco board configuration supports the following hardware features: |
| |
| +-----------+------------+-------------------------------------+ |
| | Interface | Controller | Driver/Component | |
| +===========+============+=====================================+ |
| | NVIC | on-chip | nested vector interrupt controller | |
| +-----------+------------+-------------------------------------+ |
| | UART | on-chip | serial port-polling; | |
| | | | serial port-interrupt | |
| +-----------+------------+-------------------------------------+ |
| | PINMUX | on-chip | pinmux | |
| +-----------+------------+-------------------------------------+ |
| | GPIO | on-chip | gpio | |
| +-----------+------------+-------------------------------------+ |
| | I2C | on-chip | i2c | |
| +-----------+------------+-------------------------------------+ |
| | PWM | on-chip | pwm | |
| +-----------+------------+-------------------------------------+ |
| |
| Other hardware features are not yet supported on this Zephyr port. |
| |
| The default configuration can be found in the defconfig file: |
| |
| ``boards/arm/stm32l496g_disco/stm32l496g_disco_defconfig`` |
| |
| |
| Connections and IOs |
| =================== |
| |
| STM32L496G Discovery Board has 8 GPIO controllers. These controllers are responsible for pin muxing, |
| input/output, pull-up, etc. |
| |
| For mode details please refer to `STM32L496G Discovery board User Manual`_. |
| |
| Default Zephyr Peripheral Mapping: |
| ---------------------------------- |
| |
| - UART_1_TX : PB6 |
| - UART_1_RX : PG10 |
| - UART_2_TX : PA2 |
| - UART_2_RX : PD6 |
| - I2C_1_SCL : PB8 |
| - I2C_1_SDA : PB7 |
| - PWM_2_CH1 : PA0 |
| - LD2 : PB13 |
| |
| System Clock |
| ------------ |
| |
| STM32L496G Discovery System Clock could be driven by internal or external oscillator, |
| as well as main PLL clock. By default System clock is driven by PLL clock at 80MHz, |
| driven by 16MHz high speed internal oscillator. |
| |
| Serial Port |
| ----------- |
| |
| STM32L496G Discovery board has 5 U(S)ARTs. The Zephyr console output is assigned to UART2. |
| Default settings are 115200 8N1. |
| |
| |
| Programming and Debugging |
| ************************* |
| |
| Flashing |
| ======== |
| |
| STM32L496G Discovery board includes an ST-LINK/V2-1 embedded debug tool interface. |
| This interface is not supported by the openocd version 0.9 included by the Zephyr SDK v0.9, |
| use openocd v0.10.0 from the openocd-stm32 project on GitHub to get the minimum set of scripts |
| needed to flash and debug STM32 development boards. |
| |
| .. code-block:: console |
| |
| $ git clone https://github.com/erwango/openocd-stm32.git |
| |
| Then follow instructions in README.md |
| |
| |
| Flashing an application to STM32L496G Discovery |
| ----------------------------------------------- |
| |
| The sample application :ref:`hello_world` is being used in this tutorial: |
| |
| To build the Zephyr kernel and application, enter: |
| |
| .. code-block:: console |
| |
| $ cd <zephyr_root_path> |
| $ source zephyr-env.sh |
| $ cd $ZEPHYR_BASE/samples/hello_world/ |
| $ make BOARD=stm32l496g_disco |
| |
| Connect the STM32L496G Discovery to your host computer using the USB port. |
| Then, enter the following command: |
| |
| .. code-block:: console |
| |
| $ cd <openocd-stm32_path> |
| $ stm32_flsh l4 $ZEPHYR_BASE/samples/hello_world/outdir/stm32l496g_disco/zephyr.bin |
| |
| Run a serial host program to connect with your Discovery board. |
| |
| .. code-block:: console |
| |
| $ minicom -D /dev/ttyACM0 |
| |
| You should see the following message: |
| |
| .. code-block:: console |
| |
| $ Hello World! arm |
| |
| |
| Debugging |
| ========= |
| |
| Access gdb with the following make command: |
| |
| .. code-block:: console |
| |
| $ cd <openocd-stm32_path> |
| $ stm32_dbg l4 $ZEPHYR_BASE/samples/hello_world/outdir/stm32l496g_disco/zephyr.elf |
| |
| .. _STM32L496G Discovery website: |
| http://www.st.com/en/evaluation-tools/32l496gdiscovery.html |
| |
| .. _STM32L496G Discovery board User Manual: |
| http://www.st.com/resource/en/user_manual/dm00353127.pdf |
| |
| .. _STM32L496AG on www.st.com: |
| http://www.st.com/en/microcontrollers/stm32l496ag.html |
| |
| .. _STM32L496 reference manual: |
| http://www.st.com/resource/en/reference_manual/DM00083560.pdf |