Tableaux correspondance bornes Arduino
Posté : 12 nov. 2021, 16:06
Trois tableaux très pratique.
. .
. .
. .
Pour ne pas se perdre.
. .
. .
. .
Pour ne pas se perdre.
Le forum des passionnés de trains miniature, de petites autos etc etc
https://forum-passionnement.fr/phpbb/
Code : Tout sélectionner
#include <Arduino.h>
#include <Wire.h>
#define DISPLAY_ERROR false
#define LOOP_DELAY 10000
#define USER_PIN false
// Personnaliser les broches du bus I2C pour ESP8266 ou ESP32
// Customize I2C bus pins for ESP8266 or ESP32
const int PIN_SCL = D1;
const int PIN_SDA = D2;
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);
}
Code : Tout sélectionner
// --------------------------------------
// i2c_scanner
//
// Version 1
// This program (or code that looks like it)
// can be found in many places.
// For example on the Arduino.cc forum.
// The original author is not know.
// Version 2, Juni 2012, Using Arduino 1.0.1
// Adapted to be as simple as possible by Arduino.cc user Krodal
// Version 3, Feb 26 2013
// V3 by louarnold
// Version 4, March 3, 2013, Using Arduino 1.0.3
// by Arduino.cc user Krodal.
// Changes by louarnold removed.
// Scanning addresses changed from 0...127 to 1...119,
// according to the i2c scanner by Nick Gammon
// https://www.gammon.com.au/forum/?id=10896
// Version 5, March 28, 2013
// As version 4, but address scans now to 127.
// A sensor seems to use address 120.
// Version 6, November 27, 2015.
// Added waiting for the Leonardo serial communication.
//
//
// This sketch tests the standard 7-bit addresses
// Devices with higher bit address might not be seen properly.
//
#include <Wire.h>
void setup()
{
Wire.begin();
Serial.begin(9600);
while (!Serial); // Leonardo: wait for serial monitor
Serial.println("\nI2C Scanner");
}
void loop()
{
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for(address = 1; address < 127; address++ )
{
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the 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.print(address,HEX);
Serial.println(" !");
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); // wait 5 seconds for next scan
}