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Support SPI FRAM 256 and 512KiB devices.

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Peter Hinch 2020-09-04 18:44:30 +01:00
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fram/FRAM_SPI.md
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@ -64,8 +64,12 @@ at power-up.
2. `bdevice.py` (In root directory) Base class for the device driver. 2. `bdevice.py` (In root directory) Base class for the device driver.
3. `fram_spi_test.py` Test programs for above. Assumes two 512KiB boards with 3. `fram_spi_test.py` Test programs for above. Assumes two 512KiB boards with
CS connected to pins Y4 and Y5 respectively. Adapt for other configurations. CS connected to pins Y4 and Y5 respectively. Adapt for other configurations.
4. `fram_fs_test.py` A torture test for littlefs.
Installation: copy files 1 and 2 (optionally 3) to the target filesystem. Installation: copy files 1 and 2 to the target filesystem. `fram_spi_test.py`
has a function `test()` which provides quick verification of hardware, but
`cspins` and `get_fram` at the start of the file may need adaptation to your
hardware.
# 4. The device driver # 4. The device driver