SPIS maxcount

RE: SPIS maxcount

bido1234 — Fri, 08 Apr 2022 12:30:21 GMT

thank you for the suggestion ill take a look at it

RE: SPIS maxcount

Vidar Berg — Fri, 08 Apr 2022 11:17:15 GMT

Hello,

In that case, maybe you can find this example helpful: https://github.com/NordicPlayground/nrf52-ble-image-transfer-demo. It's using SPIM (not SPIS unfortunately) to get data from a camera sensor.

RE: SPIS maxcount

bido1234 — Thu, 07 Apr 2022 14:05:22 GMT

Hello Vidar,

Firstly thanks for the fast response its really appreciated. Im trying to interface with a camera using spi .. the camera sends a frame every transaction. The frame is 320*320 pixels.so im trying to receive all the pixels during this transaction.

RE: SPIS maxcount

Vidar Berg — Thu, 07 Apr 2022 13:49:22 GMT

Hello,

The DMA pointer is limited to 16 bits like you said so you can't set up any larger buffers than that. But is there really a requirement to perform everything in such a big transaction? 100K is almost half of the available RAM on this device.

Bes regards,

Vidar