Hi I'm trying to use the deep sleep of the ESP32 and wake up using an interrupt from a MPU6050 accelerometer. But when I compile the code, I get an error : Arduino : 1.8.2 (Windows 10), Carte : "LOLIN D32, Default, 80MHz, 921600, None" C:\Users\Chuwi\Documents\Arduino\_ESP32\DS_TouchWakeUp_et_Timer\...

Actually, it's 180 lines... /* Based on Neil Kolban example for IDF: https://github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLE%20Tests/SampleWrite.cpp Ported to Arduino ESP32 by Evandro Copercini */ #include <WiFi.h> #include "time.h" #include <BLEDevice.h> #include <BLEUtils.h> #inc...

Hello I'm playing with the Wifi and BLE connexions of the ESP32. I use the BLE libraries from Neil Kolban. I built a sketch that receives data from an Android app I developed using App Inventor and it works. I wanted to add the possibility to connect on my Wifi network to get the current time, using...

Hi I'm trying to run a simple test with the SPI bus, but the program gets stuck at the transmit instruction. I guess I haven't understood al the subtleties of the protocol. Here is my code : /* */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "freertos/FreeRTOS.h" #include "fre...

Hello I tried the to run the ESP32_spiffs_example, and it works fine except for the part dealing with SPIFFS Images I followed the instructions on this site but the chapter Prepare SPIFFS image doesn't work. When I type make clean in the directory components/mkspiffs/include I get an error message, ...

I'm trying to find a ESP32 module such as this (for example) https://images-na.ssl-images-amazon.com/images/I/613Q6IxkivL._SX425_.jpg but equipped with a ESP32‑D2WD, to use internal flash memory. Can anyone tell me where to find it (Aliexpress and Banggood do not seem to have any)? Thanks for your h...

I want to make a reflectometer to test cables. The idea is to inject a pseudo random binary signal into the cable and read the reflected signal. The key point is to be able both to inject and acquire binary samples with the ESP32 at very high speed. In fact doing this at less than 100 MHz is not int...

Thanks for your answers. Actually, seeing that the CPU frequency is 240 MHz, I'm expecting to reach at least 100 Mbit/s. But how? One solution I think of is to use the QuadSPI (if exists) to get 4 bits per clock tick. The SPI frequency is 40MHz so I could potentially reach 160 Mbits/s. The ESP CPU w...

Hello I'm trying to build a system that can output as fast as possible some given bits to an ESP32 digital pin. These bits are pseudo random, they can be generated earlier and stored in a memory (internal or external). The number of bits can range up to several thousands, if necessary it can be a po...

I found a solution that works. I use the TFT_eSPI library for the display and XPT2046_Touchscreenfor the touch. TFT_eSPI defines the pins in a setup file, here is what I used: // For ESP32 Dev board (only tested with ILI9341 display) // The hardware SPI can be mapped to any pins #define TFT_MISO 19 ...