Search found 181 matches

by username
Wed Feb 19, 2020 8:25 pm
Forum: IDEs for ESP-IDF
Topic: VSC Extension Prerequisites
Replies: 1
Views: 2424

VSC Extension Prerequisites

Just curious why the "Prerequisites" section says: https://github.com/espressif/vscode-esp-idf-extension#prerequisites Annotation 2020-02-19 142029.jpg The ESP-IDF Tools Installer does all of this automatically, which is far better than installing things one by one. Why not just recommend the Instal...
by username
Mon Feb 17, 2020 4:13 am
Forum: ESP32 IDF
Topic: Thread Priority C++
Replies: 2
Views: 396

Re: Thread Priority C++

My guess is that you did not allocate enough for that thread.
try
xTaskCreate(start_HelloWorld, "HelloWorld", 2048, NULL, 5, &taskHandle);
by username
Mon Feb 17, 2020 3:31 am
Forum: General Discussion
Topic: Running a MCP23017 on 5V
Replies: 3
Views: 645

Re: Running a MCP23017 on 5V

That AC diagram your referring to is to show what the pin with those loads will meet for the timing specifications.
Yes, you can power the MCP23017 from 5V. The only thing you need to do is run your 2 pullup resistors to +3.3v and not +5v
by username
Sun Feb 16, 2020 4:21 pm
Forum: ESP32 IDF
Topic: Missing IDF version in boot log
Replies: 5
Views: 1041

Re: Missing IDF version in boot log

I noticed the same thing. v3.3.1 showed it.
by username
Wed Feb 12, 2020 6:34 am
Forum: ESP32 IDF
Topic: ESP-IDF V4 on PlatformIO
Replies: 4
Views: 749

Re: ESP-IDF V4 on PlatformIO

I'll take this up over on that forum. Susan I wish you well there. They are not to helpful with staying on the bleeding edge with ESP. Heck they still have no way to make changes to menuconfig. Without that I don't see why anyone would bother using platformIO for ESP. Its a critical piece to have I...
by username
Wed Feb 12, 2020 6:15 am
Forum: ESP32 IDF
Topic: ESP-IDF V4.0 has been released Documentation
Replies: 3
Views: 940

ESP-IDF V4.0 has been released Documentation

In the "ESP-IDF V4.0 has been release" post, the document link is bad.
viewtopic.php?f=13&t=14215
by username
Thu Feb 06, 2020 4:59 pm
Forum: ESP32 IDF
Topic: Using all three UARTS for module communication
Replies: 5
Views: 789

Re: Using all three UARTS for module communication

Are you using an ESP32 Module of some sort? If so, it already has a USB - Serial interface connected to UART0. So you will not be able to use UART0 RX line unless you cut the RX trace from it to the ESP32 module.
by username
Mon Feb 03, 2020 3:24 am
Forum: Hardware
Topic: ESP32 + Common anode optocouplers
Replies: 1
Views: 339

Re: ESP32 + Common anode optocouplers

a typical GPIO LOW output is not GROUND. Well..... not technically. But we call it that because a typical low state is 0.2-0.7mv. So other hardware will recognize it as GND or low signal. The ESP32 data sheet states that the max sink current (Low State) is 28ma, and source (High State) is 20ma. Her...
by username
Sun Feb 02, 2020 7:05 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM does not boot with DS18B20 on GPIO14
Replies: 4
Views: 951

Re: ESP32-CAM does not boot with DS18B20 on GPIO14

Are you using the SD card with your application ?
IO14 is the HS2_CLK signal for the SD Card socket.
by username
Sat Feb 01, 2020 9:23 pm
Forum: ESP32 Arduino
Topic: WiFi getting slow if using SPI on other core
Replies: 3
Views: 973

Re: WiFi getting slow if using SPI on other core

The SPI reading happens in an ISR I would strongly recommend that you do NOT do anything like that in a ISR. SPI, depending on what method you use also uses interrupts. Maybe something along the lines of using xQueueSendFromISR() might be fast enough for you. Not sure... If not then I would set a v...

Go to advanced search