SD card on GPIO7..to GPIO11 of ESP-WROOM-32

davdav
Posts: 189
Joined: Thu Nov 17, 2016 2:33 pm

Re: SD card on GPIO7..to GPIO11 of ESP-WROOM-32

Postby davdav » Fri Mar 09, 2018 8:06 am

The last solution is what we are going to do for prodcution. We will expose GPIO0,GPIO2 pasd to ground them when we have to program the firmware.

Just a side question about interna flash and strapping pin. What about MTDI (GPIO12) ? I understand that it selects the voltage of VDD_SDIO. In case it is selected as 1.8V, is internal flash working like 3.3V or performances are reduced? Or the internal flash only works at 3.3V?

Thanks


davdav
Posts: 189
Joined: Thu Nov 17, 2016 2:33 pm

Re: SD card on GPIO7..to GPIO11 of ESP-WROOM-32

Postby davdav » Mon Mar 12, 2018 8:43 am

That's a good point. Thank you

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