SDMMC again
Posted: Sun Oct 06, 2019 2:37 pm
Hi,
I am trying to receive highest reading speed with ESP-WROVER-KIT.
I use micro sd Sundisk ultra, 32GB, cl.10, 533x, 80MB/s both reading and writing.
Result:
11:40:06.425 -> 1048576 bytes read for 693 ms
11:40:08.431 -> 1048576 bytes written for 1989 ms
It looks too slow.
How to increase speed under Arduino IDE?
Thanks!
P.S.
I tried to check this example with new card
Lexar professional UHS-II 1800x 270MB/s
But speed became slower!!!
1048576 bytes read for 1483 ms
1048576 bytes written for 3729 ms
New sd card has been checked by H2testw. Card is working well.
How to understand it?
What to do?
I am trying to receive highest reading speed with ESP-WROVER-KIT.
I use micro sd Sundisk ultra, 32GB, cl.10, 533x, 80MB/s both reading and writing.
Result:
11:40:06.425 -> 1048576 bytes read for 693 ms
11:40:08.431 -> 1048576 bytes written for 1989 ms
It looks too slow.
How to increase speed under Arduino IDE?
Thanks!
P.S.
I tried to check this example with new card
Lexar professional UHS-II 1800x 270MB/s
But speed became slower!!!
1048576 bytes read for 1483 ms
1048576 bytes written for 3729 ms
New sd card has been checked by H2testw. Card is working well.
How to understand it?
What to do?