- Thu Mar 09, 2017 1:29 pm
#63502
I am trying to understand how to connect a i2c gesture sensor to a NodeMCU. I have litte experience with arduinos and none using ESP8266.
I have tried it on an arduino and it worked, I then tried to upload to the nodeMCU but without success.
I have tried the blink sketch on the nodemcu and it worked.
I connected SCL from sensor to D02 and SDA from sensor to D03 and connected the interrupt pin from sensor to D0.
This is the sketch:
I have tried it on an arduino and it worked, I then tried to upload to the nodeMCU but without success.
I have tried the blink sketch on the nodemcu and it worked.
I connected SCL from sensor to D02 and SDA from sensor to D03 and connected the interrupt pin from sensor to D0.
This is the sketch:
Code: Select all
Hardware Connections:
IMPORTANT: The APDS-9960 can only accept 3.3V!
Arduino Pin APDS-9960 Board Function
3.3V VCC Power
GND GND Ground
A4 SDA I2C Data
A5 SCL I2C Clock
2 INT Interrupt
Resources:
Include Wire.h and SparkFun_APDS-9960.h
Development environment specifics:
Written in Arduino 1.0.5
Tested with SparkFun Arduino Pro Mini 3.3V
This code is beerware; if you see me (or any other SparkFun
employee) at the local, and you've found our code helpful, please
buy us a round!
Distributed as-is; no warranty is given.
****************************************************************/
#include <Wire.h>
#include <SparkFun_APDS9960.h>
// Pins
#define APDS9960_INT 2 // Needs to be an interrupt pin
// Constants
// Global Variables
SparkFun_APDS9960 apds = SparkFun_APDS9960();
int isr_flag = 0;
void setup() {
// Set interrupt pin as input
pinMode(APDS9960_INT, INPUT);
// Initialize Serial port
Serial.begin(9600);
Serial.println();
Serial.println(F("--------------------------------"));
Serial.println(F("SparkFun APDS-9960 - GestureTest"));
Serial.println(F("--------------------------------"));
// Initialize interrupt service routine
attachInterrupt(0, interruptRoutine, FALLING);
// Initialize APDS-9960 (configure I2C and initial values)
if ( apds.init() ) {
Serial.println(F("APDS-9960 initialization complete"));
} else {
Serial.println(F("Something went wrong during APDS-9960 init!"));
}
// Start running the APDS-9960 gesture sensor engine
if ( apds.enableGestureSensor(true) ) {
Serial.println(F("Gesture sensor is now running"));
} else {
Serial.println(F("Something went wrong during gesture sensor init!"));
}
}
void loop() {
if( isr_flag == 1 ) {
detachInterrupt(0);
handleGesture();
isr_flag = 0;
attachInterrupt(0, interruptRoutine, FALLING);
}
}
void interruptRoutine() {
isr_flag = 1;
}
void handleGesture() {
if ( apds.isGestureAvailable() ) {
switch ( apds.readGesture() ) {
case DIR_UP:
Serial.println("UP");
break;
case DIR_DOWN:
Serial.println("DOWN");
break;
case DIR_LEFT:
Serial.println("LEFT");
break;
case DIR_RIGHT:
Serial.println("RIGHT");
break;
case DIR_NEAR:
Serial.println("NEAR");
break;
case DIR_FAR:
Serial.println("FAR");
break;
default:
Serial.println("NONE");
}
}
}
