Custom PCB does not work

odavidoff
Posts: 1
Joined: Wed Jun 17, 2020 5:04 pm

Custom PCB does not work

Postby odavidoff » Wed Jun 17, 2020 6:40 pm

Hey folks,

me and my colleague made a PCB using the ESP32-S0WD. We are using a FTDI231XS USB to UART Converter to program the ESP and an additional external Flash (W25Q16JVSNI). Regarding PlatformIO we can upload our Program without any errors and are just using 16.5% of Flash and 4.9% of RAM but the Program is not working at all and not even a Testprogram is printing any Testmessages. Even so same Code is working on the Wroom Dev-Kit.

All we have changed till now is that we have removed C27 cuz we had no propper levels on the Chip_PU.

The Programming Interface shoulda work properly but Iam not sure about our Flash. Even so its constantly transmitting/recieving data and toggling WP, CLK and CS.

Please help me out. TY!
Attachments
Programming Interface.pdf
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ESP32 MainBoard.pdf
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ESP_Sprite
Posts: 3937
Joined: Thu Nov 26, 2015 4:08 am

Re: Custom PCB does not work

Postby ESP_Sprite » Thu Jun 18, 2020 9:20 am

What output *do* you get? Does the situation improve if you manually press the reset button? Also, does flashing an example program (ESP-IDF has examples/getting_started/blink; I'm not sure if you can flash that using platformio) give different results?

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