| .. zephyr:code-sample:: spi-nor |
| :name: JEDEC SPI-NOR flash |
| :relevant-api: flash_interface |
| |
| Use the flash API to interact with an SPI NOR serial flash memory device. |
| |
| Overview |
| ******** |
| |
| This sample demonstrates using the :ref:`flash API <flash_api>` on a SPI NOR serial flash |
| memory device. While trivial it is an example of direct access and |
| allows confirmation that the flash is working and that automatic power |
| savings is correctly implemented. |
| |
| Building and Running |
| ******************** |
| |
| The application will build only for a target that has a :ref:`devicetree <dt-guide>` |
| ``spi-flash0`` alias that refers to an entry with one of the following bindings as a compatible: |
| |
| * :dtcompatible:`jedec,spi-nor`, |
| * :dtcompatible:`st,stm32-qspi-nor`, |
| * :dtcompatible:`st,stm32-ospi-nor`, |
| * :dtcompatible:`nordic,qspi-nor`. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/drivers/spi_flash |
| :board: nrf52840dk/nrf52840 |
| :goals: build flash |
| :compact: |
| |
| Sample Output |
| ============= |
| |
| .. code-block:: console |
| |
| *** Booting Zephyr OS build zephyr-v2.3.0-2142-gca01d2e1d748 *** |
| |
| JEDEC QSPI-NOR SPI flash testing |
| ========================== |
| |
| Test 1: Flash erase |
| Flash erase succeeded! |
| |
| Test 2: Flash write |
| Attempting to write 4 bytes |
| Data read matches data written. Good! |
