Other Arduino Codes and Videos by Robojax
This is the Arduino code for using two more m= VL6180X proximity sensors with 20cm range. Sensor explaiend in this video, wiring shown for 1 sensor and for 2 or more sensor. Adafruit Library is used. Code updated to be used easity with for real application for 1 sensor or 2 or more sensors.
Using single VL6080X Distance Proximity Sensor code is here
/*
* Arduino code
Using two or more VL6180X 20cm Time-of-Flight proximity sensor with Arduino
View code for using single VL6180X sensors: https://robojax.com/learn/arduino/?vid=robojax_VL6180X_laser
* Original code and library by https://github.com/adafruit/Adafruit_VL6180X
*
* Written/updated by Ahmad Shamshiri for Robojax Robojax.com
* on Mar 12, 2021 in Ajax, Ontario, Canada
Watch the video instruction for this sketch: https://youtu.be/_H9D0czQpSI
If you found this tutorial helpful, please support me so I can continue creating
content like this. You can support me on Patreon http://robojax.com/L/?id=63
or make donation using PayPal http://robojax.com/L/?id=64
*
* Code is available at http://robojax.com/learn/arduino
* This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.*
* This code has been download from Robojax.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <Adafruit_VL6180X.h>
// address we will assign if dual sensor is present
#define LOX1_ADDRESS 0x30
#define LOX2_ADDRESS 0x31
// set the pins to shutdown
#define SHT_LOX1 7
#define SHT_LOX2 6
// Optional define GPIO pins to check to see if complete
#define GPIO_LOX1 4
#define GPIO_LOX2 3
#define TIMING_PIN 13
// objects for the VL6180X
Adafruit_VL6180X lox1 = Adafruit_VL6180X();
Adafruit_VL6180X lox2 = Adafruit_VL6180X();
// Setup mode for doing reads
typedef enum {RUN_MODE_DEFAULT, RUN_MODE_TIMED, RUN_MODE_ASYNC, RUN_MODE_GPIO, RUN_MODE_CONT} runmode_t;
runmode_t run_mode = RUN_MODE_DEFAULT;
uint8_t show_command_list = 1;
//==========================================================================
// Define some globals used in the continuous range mode
// Note: going to start table drive this part, may back up and do the rest later
Adafruit_VL6180X *sensors[] = {&lox1, &lox2};
const uint8_t COUNT_SENSORS = sizeof(sensors) / sizeof(sensors[0]);
const int sensor_gpios[COUNT_SENSORS] = {GPIO_LOX1, GPIO_LOX2}; // if any are < 0 will poll instead
uint8_t tempRange;
uint8_t sensor_ranges[COUNT_SENSORS];
uint8_t sensor_status[COUNT_SENSORS];
// Could do with uint8_t for 8 sensors, but just in case...
const uint16_t ALL_SENSORS_PENDING = ((1 << COUNT_SENSORS) - 1);
uint16_t sensors_pending = ALL_SENSORS_PENDING;
uint32_t sensor_last_cycle_time;
/*
Reset all sensors by setting all of their XSHUT pins low for delay(10), then set all XSHUT high to bring out of reset
Keep sensor #1 awake by keeping XSHUT pin high
Put all other sensors into shutdown by pulling XSHUT pins low
Initialize sensor #1 with lox.begin(new_i2c_address) Pick any number but 0x29 and it must be under 0x7F. Going with 0x30 to 0x3F is probably OK.
Keep sensor #1 awake, and now bring sensor #2 out of reset by setting its XSHUT pin high.
Initialize sensor #2 with lox.begin(new_i2c_address) Pick any number but 0x29 and whatever you set the first sensor to
*/
void setID() {
// all reset
digitalWrite(SHT_LOX1, LOW);
digitalWrite(SHT_LOX2, LOW);
delay(10);
// all unreset
digitalWrite(SHT_LOX1, HIGH);
digitalWrite(SHT_LOX2, HIGH);
delay(10);
// activating LOX1 and reseting LOX2
digitalWrite(SHT_LOX1, HIGH);
digitalWrite(SHT_LOX2, LOW);
// initing LOX1
if (!lox1.begin()) {
Serial.println(F("Failed to boot first VL6180X"));
while (1);
}
lox1.setAddress(LOX1_ADDRESS);
delay(10);
// activating LOX2
digitalWrite(SHT_LOX2, HIGH);
delay(10);
//initing LOX2
if (!lox2.begin()) {
Serial.println(F("Failed to boot second VL6180X"));
while (1);
}
lox2.setAddress(LOX2_ADDRESS);
delay(10);
}
void readSensor(Adafruit_VL6180X &vl) {
float lux = vl.readLux(VL6180X_ALS_GAIN_5);
uint8_t range = vl.readRange();
uint8_t status = vl.readRangeStatus();
if (status == VL6180X_ERROR_NONE) {
tempRange = range;//save it for the moment
}
// Some error occurred, print it out!
if ((status >= VL6180X_ERROR_SYSERR_1) && (status <= VL6180X_ERROR_SYSERR_5)) {
Serial.print("(System error)");
}
else if (status == VL6180X_ERROR_ECEFAIL) {
Serial.print("(ECE failure)");
}
else if (status == VL6180X_ERROR_NOCONVERGE) {
Serial.print("(No convergence)");
}
else if (status == VL6180X_ERROR_RANGEIGNORE) {
Serial.print("(Ignoring range)");
}
else if (status == VL6180X_ERROR_SNR) {
Serial.print("Signal/Noise error");
}
else if (status == VL6180X_ERROR_RAWUFLOW) {
Serial.print("Raw reading underflow");
}
else if (status == VL6180X_ERROR_RAWOFLOW) {
Serial.print("Raw reading overflow");
}
else if (status == VL6180X_ERROR_RANGEUFLOW) {
Serial.print("Range reading underflow");
}
else if (status == VL6180X_ERROR_RANGEOFLOW) {
Serial.print("Range reading overflow");
}
}
void read_sensors() {
readSensor(lox1);
sensor_ranges[0]=tempRange;//save it now
readSensor(lox2);
sensor_ranges[1]=tempRange; //save it now
Serial.println();
}
//===============================================================
// Setup
//===============================================================
void setup() {
Serial.begin(115200);
// wait until serial port opens for native USB devices
while (! Serial) {
delay(1);
}
pinMode(SHT_LOX1, OUTPUT);
pinMode(SHT_LOX2, OUTPUT);
// Enable timing pin so easy to see when pass starts and ends
pinMode(TIMING_PIN, OUTPUT);
#ifdef GPIO_LOX1
// If we defined GPIO pins, enable them as PULL UP
pinMode(GPIO_LOX1, INPUT_PULLUP);
pinMode(GPIO_LOX2, INPUT_PULLUP);
#endif
Serial.println("Shutdown pins inited...");
digitalWrite(SHT_LOX1, LOW);
digitalWrite(SHT_LOX2, LOW);
digitalWrite(TIMING_PIN, LOW);
Serial.println("All in reset mode...(pins are low)");
Serial.println("Starting...");
setID();
}
//===============================================================
// Loop
//===============================================================
void loop() {
read_sensors();
for(int i=0; i<COUNT_SENSORS; i++)
{
Serial.print("Sensor ");
Serial.print(i);
Serial.print(" :");
Serial.print(sensor_ranges[i]);
Serial.print("mm");
Serial.println();
}
// if(sensor_ranges[1] >=76)
// {
// //do something here
// }
delay(100);
}
If you found this tutorial helpful, please support me so I can continue creating content like this. support me via PayPal 