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9 years, 8 months ago.
How fast can this device write to an SD card?
How fast can this device write to an SD card? Or host/shield controls the write speed?
Is it worth buying a fast SD card? I'm considering to capture some short 720p (hopefully 1080p) videos and save them to the SD card.
Thanks.
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1 Answer
9 years, 8 months ago.
Slow.
On most mbeds (maybe all) the SD card is on a serial SPI interface rather than a dedicated 4 bit SD interface. A faster card will help but either way it's going to be slow.
How are you going to get the video into the mbed to start with? That's a lot of data for a low end embedded system to shuffle around.
I'm thinking with OV5642 Camera (http://www.arducam.com/camera-modules/5mp-ov5642/). I want to minimize the costs and skip using another shield. But I'm pretty new in this area so I might be talking nonsense.
posted by 17 Feb 2015