ESP8266-S3
Posted: Mon Dec 13, 2021 10:02 amI cant figure out how to use i2c on this
https://fccid.io/2AKBPESP8266-S3/User-M ... 594791.pdf
this code finds no i2c devices with any value for SDA&SCL
https://fccid.io/2AKBPESP8266-S3/User-M ... 594791.pdf
this code finds no i2c devices with any value for SDA&SCL
Code: Select all
#include <Arduino.h>
#include <Wire.h>
#define DISPLAY_ERROR false
#define LOOP_DELAY 10000
#define USER_PIN true
// Customize I2C bus pins for ESP8266 or ESP32
const int PIN_SCL = 14;
const int PIN_SDA = 12;
String I2Ctest() {
byte error, address;
int nDevices;
String s;
s="Scanning...\n";
nDevices = 0;
for(address = 1; address < 127; address++ ) {
Wire.beginTransmission(address);
error = Wire.endTransmission();
if (error == 0) {
s+="I2C device found at 0x";
if (address<16)
s+="0";
s+=String(address,HEX);
s+="\n";
nDevices++;
} else if ( error > 0 ) {
if ( DISPLAY_ERROR ) {
s+="Unknow error at 0x";
if (address<16)
s+="0";
s+=String(address,HEX);
s+="\n";
}
}
}
if (nDevices == 0)
s+="No I2C devices found\n";
else
s+="done\n";
return s;
}
void setup() {
Serial.begin(115200);
Serial.println("I2C scanner");
#if USER_PIN
Wire.begin(PIN_SDA, PIN_SCL);
#else
Wire.begin();
#endif
}
void loop() {
// put your main code here, to run repeatedly:
Serial.println(I2Ctest());
delay(LOOP_DELAY);
}