Search found 154 matches

by boarchuz
Fri Jan 10, 2020 3:23 pm
Forum: General Discussion
Topic: Need Review of custom PCB design
Replies: 7
Views: 395

Re: Need Review of custom PCB design

I'd suggest having another go at those power traces. Consider width, and more optimal routing.

Do you need that bottom-layer trace on 3V3 TP?

Check the vias for the exposed pad. Are they GND?
by boarchuz
Fri Jan 10, 2020 10:55 am
Forum: General Discussion
Topic: Trouble Waking from Ligh Sleep using ULP
Replies: 3
Views: 164

Re: Trouble Waking from Ligh Sleep using ULP

Light sleep behaviour is very different to deep sleep. Execution will continue from where it had a nap, rather than a 'reset' as with deep sleep. Try this: for(;;) { printf("Entering light sleep...\n"); vTaskDelay(500 / portTICK_PERIOD_MS); esp_light_sleep_start(); printf("Woke from light sleep!\n")...
by boarchuz
Fri Jan 10, 2020 7:22 am
Forum: ESP32 IDF
Topic: ESP32 define custom esp_err_t errors and best practice
Replies: 3
Views: 189

Re: ESP32 define custom esp_err_t errors and best practice

I had the exact same query as fiveowle5. If you can use only the existing built-in esp_err_t error values, return esp_err_t. BTW, if there is some reasonably generic error that you think we've missed out, feel free to make a feature request to add it. https://docs.espressif.com/projects/esp-idf/en/l...
by boarchuz
Tue Jan 07, 2020 9:40 am
Forum: Hardware
Topic: Touch GPIO of ESP32 as soil moisture sensor
Replies: 6
Views: 235

Re: Touch GPIO of ESP32 as soil moisture sensor

Zeni241 wrote:
Tue Jan 07, 2020 8:10 am
captouch channel.
Touch pin, touch pad. Don't overthink it.
ESP_Sprite wrote:
Tue Jan 07, 2020 8:37 am
your electrodes probably will erode away
Isn't that only a concern for resistive moisture sensors? A benefit of capacitive is that he can insulate the entire probe.
by boarchuz
Sat Jan 04, 2020 11:04 am
Forum: IDEs for ESP-IDF
Topic: Official Visual Studio Code Extension for ESP-IDF Projects
Replies: 9
Views: 1039

Re: Official Visual Studio Code Extension for ESP-IDF Projects

Yep, official support for VS Code is very exciting. Special mention for the setup wizard - fantastic. But there are still red squiggles for all the #includes. Did you follow the setup guide here?: https://github.com/espressif/vscode-esp-idf-extension/blob/master/docs/C_CPP_CONFIGURATION.md You might...
by boarchuz
Tue Dec 31, 2019 1:05 pm
Forum: Showcase
Topic: HULP - ULP Helper
Replies: 1
Views: 342

HULP - ULP Helper

https://github.com/boarchuz/HULP HULP contains a bunch of useful macros and a few functions to more easily program the ULP coprocessor (using legacy macros). ulp_var_t to easily share data between the SoC and ULP: RTC_DATA_ATTR ulp_var_t ulp_myvariable; //ULP I_GET(R0, R2, ulp_myvariable), I_ADDI(R0...
by boarchuz
Tue Dec 31, 2019 11:04 am
Forum: ESP32 Arduino
Topic: Count 2µs pulses with ULP
Replies: 1
Views: 236

Re: Count 2µs pulses with ULP

So I understand correctly, the signal is normally high (idle) and is then low for >=2 uS? How frequent is this low pulse? It will be tight, but might be possible. ULP instructions take 4-12 cycles total, at 8 MHz, which works out to 0.5-1.5uS, so you don't have any time to spare. You'll have to stri...
by boarchuz
Tue Dec 31, 2019 10:18 am
Forum: Hardware
Topic: Esp32-PICO-D4 Antenna Matching circuit
Replies: 2
Views: 216

Re: Esp32-PICO-D4 Antenna Matching circuit

There's no "correct", a matching network needs to be tuned for each particular PCB design and so will vary between them. The first schematic has a placeholder (don't pay too much attention to the values or symbols, they will share the same footprint and so any of those positions may be populated wit...
by boarchuz
Tue Dec 31, 2019 12:45 am
Forum: IDEs for ESP-IDF
Topic: Official Visual Studio Code Extension for ESP-IDF Projects
Replies: 9
Views: 1039

Re: Official Visual Studio Code Extension for ESP-IDF Projects

Do you know when it will be available on the marketplace?
by boarchuz
Fri Dec 13, 2019 4:02 pm
Forum: General Discussion
Topic: ESP32 interface with I/O Expander
Replies: 4
Views: 394

Re: ESP32 interface with I/O Expander

john_peter wrote:
Fri Dec 13, 2019 3:46 pm
The direction of port PA00 configured as output and then set to low voltage level
Other way around. Prepare the level, then enable output.

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