Search found 5 matches

by Fundeckhermit
Sun Jul 21, 2024 7:54 pm
Forum: ESP32 Arduino
Topic: How to invoke RUN_USER_CODE from stub loader? (esptool)
Replies: 0
Views: 773

How to invoke RUN_USER_CODE from stub loader? (esptool)

My board has a ESP32-S3 that I want to reset after uploading. Based on the the documentation a stub loaders is send to supplement the bootloader found in ROM. This stub has the option to run user code (effectively a soft-reset). My platformio .ini files looks like this: [env] platform = espressif32 ...
by Fundeckhermit
Wed Apr 06, 2022 1:47 pm
Forum: Hardware
Topic: ESP32-S2 outputs in parallel to increase max current.
Replies: 3
Views: 2332

Re: ESP32-S2 outputs in parallel to increase max current.

And If the load was purely resistive load instead? Would sharing the current break a single pin?
by Fundeckhermit
Wed Apr 06, 2022 7:47 am
Forum: Hardware
Topic: ESP32-S2 outputs in parallel to increase max current.
Replies: 3
Views: 2332

ESP32-S2 outputs in parallel to increase max current.

40mA is the maximum current sourced by a single pin as specified in the datasheet. I have a relay (FH42L-LCSC) that requires 83.3mA (±10%) for about 15ms.

Can I put 5 output pins in parallel to share the load or would one pin fail/break?
by Fundeckhermit
Fri Apr 01, 2022 3:18 pm
Forum: General Discussion
Topic: Initial flash needed for download boot over internal USB?
Replies: 5
Views: 4858

Re: Initial flash needed for download boot over internal USB?

So this would work?

Flashing a binary file with IDF on a new/fresh/empty ESP32-S2 over the internal USB (USB-OTG) peripheral.
by Fundeckhermit
Fri Apr 01, 2022 2:56 pm
Forum: General Discussion
Topic: Initial flash needed for download boot over internal USB?
Replies: 5
Views: 4858

Initial flash needed for download boot over internal USB?

I want to design a minimal PCB around the ESP32-S2-MINI with just: Crystal circuit Boot/Reset button USB connector directly on D+ and D- Voltage regulator Can I use IDF to download a fresh/new/empty ESP32-S2-MINI with just the internal USB? OR do I need JTAG/UART for the initial flashing?