nrf51822 evaluation kit image from camera to BLE

[Dong Pham]

Hi Im electrical engineer student. I am working on nrf51822 evaluation kit and LinkSprite JPEG Color Camera UART Interface. I tried to control the camera to take picture, store in flash then from flash go straight to BLE. I get stuck at storing image to flash. The library in keil folder doesnt provide that much example. Is there anyone have a direction for me to continue this project? Thank you

[Nguyen Hoan Hoang]

You need to look at the pstorage. How big is the picture ? You only have a few KB in the nRF51 flash avail for storage.

[Clem Taylor]

Many of the jpeg camera modules can buffer the compressed data (some can even store a small ring of compressed frames). So your best bet is to stream the data directly from the uart to the radio and let the camera module act as your buffer.

The on-chip flash really isn't a good choice for writing something like image data. If you really want to write the images to flash first, then use an external SPI flash (something like the Winbond W25Q80BW is US$0.50/Q1 at digikey).