UhClem
Senior Member

I never found that sort of data very useful. I prefer graphs. For my testing I wrote the current value from a hardware timer into the write buffer before issuing the write command. Then read the data back and...

Maximum write speed requires writing data in RU (Recording Unit) sized blocks which are over 128KB for big SD cards. But not to worry, it has been a while but I recall looking at the code for one library (I forget...