RE: Example of nRF52832 EasyDMA

snowuyl — Mon, 19 Sep 2022 10:41:31 GMT

Thanks for your reply!

RE: Example of nRF52832 EasyDMA

Jørgen Holmefjord — Mon, 19 Sep 2022 10:30:39 GMT

Hi,

EasyDMA is used by default when the HW peripherals in the chip that supports EasyDMA is used (e.g SPIM, SPIS, TWIM, UARTE, SAADC, RADIO, etc - see full list in "EasyDMA MAXCNT bit length" in table on nRF52 Series).

EasyDMA can't be used for direct access of external devices like NOR flash, but it is possible to configure one of the supported peripheral, for instance SPIM if your NOR flash supports SPI, to do a predefined transfer of data to/from RAM on the nRF52832. The transfer can be started either from code, or from another peripheral using a PPI signal.

Best regards,
Jørgen