Flash read error, 1000 on custom PCB

Kaydrae
Posts: 2
Joined: Sun Apr 18, 2021 9:36 pm

Flash read error, 1000 on custom PCB

Postby Kaydrae » Mon Apr 19, 2021 9:23 pm

Hello,

I have this PCB that I designed around the esp32-wroom-32D and I am using an esp32-wroom-32 programmer to be able to connect it through serial. But when I connect it I get the following error in the serial output:

Code: Select all

rst:0x10 (RTCWDT_RTC_RESET),boot:0x32 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371 
ets Jun  8 2016 00:22:57

I am not sure what the problem is, The board was assembled from jlcpcb, so I soldered nothing on there. I have posted the schematic. Am I missing something? Thanks in advance.
Attachments
Schematic_Rob_Tank_2021-04-19.pdf
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WiFive
Posts: 3529
Joined: Tue Dec 01, 2015 7:35 am

Re: Flash read error, 1000 on custom PCB

Postby WiFive » Tue Apr 20, 2021 5:27 am

boot:0x32
Gpio12 is high which is selecting 1.8v sdio voltage. You need to burn the efuse to lock it to 3.3v

Kaydrae
Posts: 2
Joined: Sun Apr 18, 2021 9:36 pm

Re: Flash read error, 1000 on custom PCB

Postby Kaydrae » Tue Apr 20, 2021 6:40 am

You need to burn the efuse to lock it to 3.3v
How would I do that? Could I also ground gpio12 to fix the problem?



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