wrover kit shematic V2 "SD Card"

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rudi ;-)
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Joined: Fri Nov 13, 2015 3:25 pm

wrover kit shematic V2 "SD Card"

Postby rudi ;-) » Sun Mar 26, 2017 9:40 pm

hi guys

after several times doing sd card things i have a time to look up on the shematic detailed and see,
that DATA2 is not pulled up ( NC )
Wrover_sd_Card.png
Wrover_sd_Card.png (81.11 KiB) Viewed 5677 times
i wounder me, is this cause GPIO12 or do we not need to pull up this line.
i remind to me, that ivan talked, we must pulled up all lines ( hope have understand well )
can you do a small state to this please?

thank you
best wishes
rudi ;-)
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ESP_Angus
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Joined: Sun May 08, 2016 4:11 am

Re: wrover kit shematic V2 "SD Card"

Postby ESP_Angus » Mon Mar 27, 2017 12:12 am

Hi Rudi,

IO12 is not pulled up on the board because it needs to be low on reset to enable 3.3V flash voltage. Refer to this note in the sd_card example README:
https://github.com/espressif/esp-idf/bl ... out-gpio12

I found that on my ESP-WROVER-KIT boards, the sd_card example worked without any software or hardware modifications. However you may get different behaviour with a different SD card.

If your card is still not working, check you have connected the SD_IO2 to IO2 jumper as described on page 8 of the ESP-WROVER-KIT getting started guide PDF: http://espressif.com/en/support/download/documents

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rudi ;-)
Posts: 1727
Joined: Fri Nov 13, 2015 3:25 pm

Re: wrover kit shematic V2 "SD Card"

Postby rudi ;-) » Mon Mar 27, 2017 12:21 am

hi Angus

txs for fast reply
I thought this into thoughts, cause gpio12, but was not sure.

yes can confirm, here sd card example works without modifikation on wrover.

thank you!

best wishes
rudi ;-)
-------------------------------------
love it, change it or leave it.
-------------------------------------
問候飛出去的朋友遍全球魯迪

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