| .. _legend: |
| |
| Legend |
| ###### |
| |
| Overview |
| ******** |
| The Legend board family contains three revisions: 25hdd, 25ssd, and 35. |
| |
| The Legend 2.5" HDD board (revision 25hdd) can be found in the Seagate FireCuda |
| Gaming Hard Drive, Gaming Drive for Xbox and Gaming Drive for PlayStation |
| devices. A 2.5" drive and two chips are embedded: an ASMedia ASM1153 USB-to-SATA |
| bridge controller and a STM32F070 MCU. The former is handling the USB to HDD I/Os |
| while the latter is dedicated to the LED effects. The two chips are connected |
| together through I2C. |
| |
| The Legend 2.5" SSD board (revision 25ssd) is found in the Seagate SSD Gaming |
| Drive for Xbox. A Realtek RTS5411S USB hub is embedded and connected to a Phison |
| U17 2.5" SSD, as well as a STM32F070 MCU. |
| |
| The Legend 3.5" board (revision 35) can be found in the Seagate FireCuda Gaming |
| Hub and Gaming Drive Hub for Xbox devices. A Genesys Logic GL3523-S USB hub is |
| connected to an ASMedia ASM1153 USB-to-SATA bridge controller and a STM32F070 |
| MCU. The two chips are connected together using I2C. |
| |
| On all boards, the Zephyr port is running on the STM32F070 MCU. |
| |
| .. image:: img/firecuda_gaming_hard_drive.jpg |
| :align: center |
| :alt: Seagate FireCuda Gaming Hard Drive |
| |
| .. image:: img/firecuda_gaming_hub.jpg |
| :align: center |
| :alt: Seagate FireCuda Gaming Hub |
| |
| Hardware |
| ******** |
| |
| - STM32F070cb MCU: |
| |
| - ARM Cortex-M0+ |
| - 16KB SRAM |
| - 128KB on-chip flash |
| |
| - External devices connected to the STM32F070cb MCU: |
| |
| - ASMedia ASM1153 USB-to-SATA bridge (I2C master on port 1) (HDD only) |
| - 6 (hdd) or 4 (ssd) Everlight B1414 LEDs connected on SPI1 MOSI |
| - 1 white LED (HDD only) |
| - 64KB external SPI flash connected on SPI2 |
| |
| Supported Features |
| ================== |
| |
| All the hardware features available on the Legend boards are supported by |
| Zephyr. |
| |
| +-----------+------------+-------------------------------------+ |
| | Interface | Controller | Driver/Component | |
| +===========+============+=====================================+ |
| | NVIC | on-chip | nested vector interrupt controller | |
| +-----------+------------+-------------------------------------+ |
| | SYSTICK | on-chip | systick | |
| +-----------+------------+-------------------------------------+ |
| | CLOCK | on-chip | clock and reset control | |
| +-----------+------------+-------------------------------------+ |
| | GPIO | on-chip | gpio | |
| +-----------+------------+-------------------------------------+ |
| | I2C | on-chip | i2c master/slave controller | |
| +-----------+------------+-------------------------------------+ |
| | UART | on-chip | serial | |
| +-----------+------------+-------------------------------------+ |
| | SPI flash | on-chip | spi_nor | |
| +-----------+------------+-------------------------------------+ |
| | LED strip | on-chip | ws2812 | |
| +-----------+------------+-------------------------------------+ |
| | USB | on-chip | usb | |
| +-----------+------------+-------------------------------------+ |
| |
| |
| Connections and IOs |
| =================== |
| |
| +---------+-----------------+----------------------------+ |
| | Name | Function | Usage | |
| +=========+=================+============================+ |
| | PB6 | I2C1 | I2C1 SCL (HDD only) | |
| +---------+-----------------+----------------------------+ |
| | PB7 | I2C1 | I2C1 SDA (HDD only) | |
| +---------+-----------------+----------------------------+ |
| | PA10 | UART | USART0 RX | |
| +---------+-----------------+----------------------------+ |
| | PA9 | UART | USART0 TX | |
| +---------+-----------------+----------------------------+ |
| | PB0 | PWM | Activity LED (HDD only) | |
| +---------+-----------------+----------------------------+ |
| | PB12 | SPI2 | SPI2 Enable | |
| +---------+-----------------+----------------------------+ |
| | PB13 | SPI2 | SPI2 Clock | |
| +---------+-----------------+----------------------------+ |
| | PB14 | SPI2 | SPI2 MISO | |
| +---------+-----------------+----------------------------+ |
| | PB15 | SPI2 | SPI2 MOSI | |
| +---------+-----------------+----------------------------+ |
| | PA7 | LED strip | SPI1 MOSI | |
| +---------+-----------------+----------------------------+ |
| | PA12 | USB | USB DM (25ssd and 35 only) | |
| +---------+-----------------+----------------------------+ |
| | PA13 | USB | USB DP (25ssd and 35 only) | |
| +---------+-----------------+----------------------------+ |
| |
| Programming and Debugging |
| ************************* |
| |
| Flashing |
| ======== |
| |
| The STM32F070cb MCU can be flashed by connecting an external debug probe to the |
| SWD port (on-board 4-pin header). In the default OpenOCD configuration, the |
| ST Link interface is selected. You may need to replace it with the interface of |
| your debug probe. |
| |
| Once the debug probe is connected to both the Legend board and your host |
| computer, then you can simply run the ``west flash`` command to write a firmware |
| image into flash. |
| |
| Debugging |
| ========= |
| |
| Please refer to the `Flashing`_ section and run the ``west debug`` command |
| instead of ``west flash``. |
| |
| References |
| ********** |
| |
| - `STM32F070 reference manual`_ |
| |
| .. _STM32F070 reference manual: |
| http://www.st.com/resource/en/reference_manual/dm00031936.pdf |