Hi,
In the KL46 source code you can find an example which uses the SPI module with the DMA feature. There you can find drivers for the SPI module
KL46 Source Code:
FRDM-KL46Z: Freescale Freedom Development Platform for Kinetis KL3x and KL4x MCUs
If you do not want to download the complete package in the attachments you can find the source code of this project.
Hope this helps,
Regards,
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