My application needs to store data on sd card regularly before transmitting. I am facing some problems in one of the 6 devices that i am running continuously. Sd card gets corrupt and when i check the sd card by connecting it to pc ,it shows storage unallocated in gparted with no partion table. Then...

I had similar issues, with mine, but it was with D12 on a DevKitC, with the same error. When I connected something to it, it never booted and flashed. Removing the connection made it flash and boot, and when I reconnected it during runtime, the functionality of the pin actually worked. Another thin...

Agreed. The reason it may work for you now is that you may have flashed the program with the flash in DIO mode now. Be aware that connecting something to GPIO9 can still mess with your hardware as the HD pin of the flash will be pulled to undefined levels, and the chip will not like this. Also be a...

martinayotte wrote:GPIO9 is connected to internal Flash, therefore it can be used for something else ...

OLD ESP32 is working as GPIO9 used as RX but new ones are not.
Is the internal flash connection are changed now? if yes then how is it possible as we have not changed any menuconfig configurations.

I am using ESP32 since 8 months and for the first time I am facing this issue. When the GPIO9 is pulled down, the code can not be uploaded. and if the GPIO9 is not connected with anything and upload the code, the code runs fine and in between I pulled down the GPIO9, the code still runs fine but onc...

I am using 5 secs as the scan duration by calling esp_ble_gap_start_scanning(duration). When there is no wifi ap ....a task tries to connect at regular intervals waiting for ap availability. there are also some other tasks like ble scanning tasks ,ble result parsing task and writing data to sd card ...

we didn't find any solution too.
Now,we changed our pcb design and switched to 1 line SD mode that works without any problem.

@i_am_mrp hey i am having the same problem using uSdcard with spi in esp32. After getting timeout errors sometimes it get fixed automatically or sometimes i have to put re-initialization code for sd card there to fix which does not solves the problem in first try. It takes multiple mounting and de-m...