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Faster QSPI Flash Access - Feather M4 Express
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Faster QSPI Flash Access - Feather M4 Express

by ddegonge on Sat Feb 16, 2019 9:45 am

I'm trying to use the Feather M4's built in 2mB flash storage on the qspi bus with my arduino program but I'm getting terrible performance. Using the qspi_flash_test example program, it's taking 2ms to write 512B. This seems way too slow, is there something I'm missing? Can I somehow change the clock divider for better performance? Any help would be appreciated!

ddegonge
 
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Please be positive and constructive with your questions and comments.