Hello,
I know that the issue was questioned several times, but either the solution doesn't solve my problem; either there was no solution at all...
I am desperatly trying to connect an ADS1115 on an ESP32 (WROOM).
I stay put at the I2C scanning step : no device is found.
I am using : the latest esp32 by espressif systems card softwares, and the basic Wire library included. (I tested serveral ADS1115 libraries, but it is not probably the cause.)
I have tried several versions of the software, custom Wire library.
I have also tried to change the usual pins on the ESP32 . (GPIO 21: SDA; GPIO 22 : SCL)
Of course, I have changed boards and ADS1115.
I put pull up resistors, without any additionnal success.
This is really frustrating; it seems like everbody can do it ... except me.
Do you have any clue ? Thanks !
My latest tests are based on this sketch
#include <Wire.h>
void setup() {
Wire.begin();
Serial.begin(115200);
Serial.println("\nI2C Scanner");
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for(address = 1; address < 127; address++ ) {
Wire.beginTransmission(address);
error = Wire.endTransmission();
if (error == 0) {
Serial.print("I2C device found at address 0x");
if (address<16) {
Serial.print("0");
}
Serial.println(address,HEX);
nDevices++;
}
else if (error==4) {
Serial.print("Unknown error at address 0x");
if (address<16) {
Serial.print("0");
}
Serial.println(address,HEX);
}
}
if (nDevices == 0) {
Serial.println("No I2C devices found\n");
}
else {
Serial.println("done\n");
}
delay(5000);
Serial.print("i2c devices found:");
Serial.println(nDevices);
}
void loop() {
}
