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how fast to read a byte from SD card

Topic last updated 13 Aug 2010, by Thomas Hamilton. 1 reply
Zhe Hu
11 Aug 2010

I'd like to store 1G-size binary file on the SD card, which can be read by MBED one byte at a time and streamed out. (like the mp3 player idea)

 

I'm wondering how fast (less than 10-micro-second?) for MBED to read a byte (and write to DIO). pseudo-code:

 

a = fgetc(fp);

output(a);

 

Thomas Hamilton
13 Aug 2010

yes, my implementation can definitely beat that time.