ESP_PROG auto program doesn't work

bonmotwang
Posts: 33
Joined: Fri Apr 12, 2019 4:25 pm
Location: Canada

ESP_PROG auto program doesn't work

Postby bonmotwang » Thu Jul 25, 2019 8:42 pm

I am using ESP_PROG to program the ESP32 module by manually pressing RST and BOOT buttons.
It works no problem.
But the auto program feature doesn't work.
I checked with scope. the signal timing seems to be correct.
Not sure where I did wrong.
The computer is running windows 7.

bonmotwang
Posts: 33
Joined: Fri Apr 12, 2019 4:25 pm
Location: Canada

Re: ESP_PROG auto program doesn't work

Postby bonmotwang » Thu Jul 25, 2019 9:05 pm

The problem seems to be the GPIO0 signal.
During the "Connecting ....._______" time, if I hold down the boot button, it will start programming.

But the target does go into the bootloader mode because my application isn't running anymore during the "connecting ....."

I really want to make the auto programming working.
Thanks
Paul

bonmotwang
Posts: 33
Joined: Fri Apr 12, 2019 4:25 pm
Location: Canada

Re: ESP_PROG auto program doesn't work

Postby bonmotwang » Mon Jul 29, 2019 10:38 pm

Sometimes it will flash the module automatically without me pressing the boot button, which is what I expected.
So is there some minor timing off in idf.py program?

Is there anyone using ESP-PROG board to program their ESP32 module?

Thanks

Paul

mikemoy
Posts: 372
Joined: Fri Jan 12, 2018 9:10 pm

Re: ESP_PROG auto program doesn't work

Postby mikemoy » Wed Jul 31, 2019 10:51 pm

Woks fine for me. Though you show know with many of the knock offs that are out there. This is a somewhat common issue.
I have found that adding a 0.1uf on GPIO0 line to gnd resolves this problem.

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