Official development framework for ESP32 microcontroller (as opposed to Arduino). Abbreviation for Espressif IoT Development Framework.
Questions tagged [esp-idf]
377 questions
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How to change SPI Flash size in ESP32 in eclipse?
In my eclipse console Auto-detected Flash size: 4MB is showing but in the terminal I (55) boot: SPI Flash Size : 2MB which is giving error because the partition table requires 4MB.
And strangely this was not the problem a week ago, everything was…
lalitahuja
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1 answer
"sprintf" error in esp-idf. gcc version 9.1.0 in msys2
I was using msys2 earlier with gcc 6.4.0 and was working for my project. I upgraded the toolchain and gcc to 9.1.0. Now I am getting this error:
small part of code:
memset(payload, 0, 8192);
sprintf(payload, "GET %s%s HTTP/1.1\r\n",…
Murlidhar Roy
- 29
- 7
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1 answer
msys2 error in installing requirements.txt for ESP-IDF
I am trying to install the requirements.txt using "pip install -r requirements.txt" for ESP-IDF in msys32 but getting this error.
$ pip install -r requirements.txt
failed to create process (C:\msys32\mingw32\bin\python2.exe…
Murlidhar Roy
- 29
- 7
0
votes
1 answer
Error while building aws_iot (thing shadow) example in release/v4.2 SDK
Hey everybody,
In the release/v3.3 there exists an aws_iot example which does not exist in release/v4.2 of esp-idf.
So I copied the aws_iot (thing shadow) example and made desired changes according to my requirement in…
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votes
1 answer
Button counter with interrupt
I want to increment a variable every second when an interrupt is triggered.
Code on esp32, esp-idf.
I have connected a button, when the button is pressed I want to count the number of seconds.
I did this using polling function, but I want to learn…
DDBE
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Maximum tcp client connection number does not increase
A tcp server is established in Esp32(station mode).
I accept the clients with the code below.
int sock = accept(listen_sock, (struct sockaddr *)&source_addr, &addr_len);
if (sock < 0) {
ESP_LOGE(TAG, "Unable to accept connection: errno %d",…
Qwe Qwe
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1 answer
How does ble_gatts_chr_updated in NimBLE get the characteristic's value?
I am writing a BLE peripheral using the NimBLE API in esp-idf. All the code I can find store values of characteristics in variables, not in anything NimBLE can access.
However, there is the function ble_gatts_chr_updated in…
Joonazan
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2 answers
How to fix this Firebase message format sent from ESP32 (Arduino, ESP-IDF - all text, no Firebase library used)
I'm trying to get this code below to work which was working perfectly a year ago the last time I tried it. After running it I receive no notification in my app. Using in Arduino IDE on ESP32 module. No changes were made at all to the sketch that was…
wdbwdb1
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1 answer
espidf COMPONENT_DIR
I'm trying to compile a simple Hello_world example using the Smooth component (https://github.com/PerMalmberg/Smooth), and get error: include could not find load file:
../lib/compiler_options.cmake.
It seems that COMPONENT_DIR is not set, but I'm…
Harrie Thijssen
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1 answer
Unable to build project for ESP32
I am trying to build project esp-obd-emulator I always get the following error, maybe someone can help me with that.
I am using esp-idf to build project.
C:\Users\edvar\Desktop\esp-idf-2\examples\emu>idf.py build
Checking Python…
user2996120
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- 10
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1 answer
C array declaration with inline assembly
I recently came upon this snippet:
extern const uint8_t server_root_cert_pem_start[] asm("_binary_server_root_cert_pem_start");
// ^^^^^^^^^^^^^ what's going on here?
in the esp-idf examples(line 74).…
Lorah Attkins
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2 answers
esp-idf path doesn't override when esp-iot-solution repository is used
I have cloned the esp-idf-solution repository and followed the instructions in readme.md file.
I already have esp-idf repository cloned before and can compile and flash successfully. But when I try to compile the new examples in esp-iot-solution it…
Abishek
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2 answers
What is the least delay "yield" like call?
The getting started examples in Espressif's esp-idf are hello-world and blink. Hello-world outputs prints then calls esp_restart(); - so it is in it's own special infinite loop.
The blink example (with comments removed) has this app_main, which is…
NULL pointer
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how to solve aws connection error for esp32
I am getting the following error while connecting ESP32 with AWS IOT:-
(error attached following)
I went thru many links but was not able to solve the issue.
I have generated valid certificates that are…
Anju
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1 answer
esp32 printf channel through uart (esp-idf)
I try to disable all logs on my program,
I did disable esp logs
but when I use printf in my channel and open make monitor
printf still works.
how and why?
I want to disable it.
daniel
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