How To: Prevent duplicate coding
Posted: Thu May 14, 2020 7:15 amI am rather new in programming and wonder how to compact the code I wrote for using a flexible number of CJMCU-8110 connected to my NodeMCU. In the attached test code below I have 2 connected, but in the near future I want to expand to 3 or 4 and would like to drive that by a variable (f.i. int SensorNumber = 2) instead of duplicating the code for each sensor like I did in the example.
Who can guide me to a solution?
Who can guide me to a solution?
Code: Select all
#include <Arduino.h>
#include <Wire.h> // I2C library
#include "ccs811.h" // CCS811 library
#include "ClosedCube_HDC1080.h"
CCS811 ccs811_1;
CCS811 ccs811_2;
ClosedCube_HDC1080 HDC1080_1;
ClosedCube_HDC1080 HDC1080_2;
int SDApin;
int SCLpin = D1;
HDC1080_SerialNumber sernum;
char format[12];
bool vBootphase = true;
uint16_t eco2, etvoc, errstat, raw;
void setup() {Serial.begin(115200); while(!Serial){;}}
void loop()
{
if (vBootphase == true)
{
// Channel 1: Setup
SDApin = D2;
Wire.begin(SDApin, SCLpin);
delay(500);
// ** CCS811 **
Serial.println("");
Serial.println("*** CCS1 ***");
Serial.print("CCS :");
ccs811_1.set_i2cdelay(50);
ccs811_1.begin();
delay(500);
ccs811_1.start(CCS811_MODE_1SEC);
delay(1000);
Serial.print("setup: hardware version: "); Serial.println(ccs811_1.hardware_version(),HEX);
Serial.print("setup: bootloader version: "); Serial.println(ccs811_1.bootloader_version(),HEX);
Serial.print("setup: application version: "); Serial.println(ccs811_1.application_version(),HEX);
// HDC1080
HDC1080_1.begin(0x40);
Serial.print("Manufacturer ID=0x");
Serial.println(HDC1080_1.readManufacturerId(), HEX); // 0x5449 ID of Texas Instruments
Serial.print("Device ID=0x");
Serial.println(HDC1080_1.readDeviceId(), HEX); // 0x1050 ID of the device
Serial.print("Device Serial Number=");
sernum = HDC1080_1.readSerialNumber();
sprintf(format, "%02X-%04X-%04X", sernum.serialFirst, sernum.serialMid, sernum.serialLast);
Serial.println(format);
// Channel 2: Setup
SDApin = D6;
Wire.begin(SDApin, SCLpin);
delay(500);
// ** CCS811 **
Serial.println("*** CCS2 ***");
// Print CCS811 versions
Serial.print("CCS2 :");
ccs811_2.set_i2cdelay(50);
ccs811_2.begin();
delay(500);
ccs811_2.start(CCS811_MODE_1SEC);
delay(1000);
Serial.print("setup: hardware version: "); Serial.println(ccs811_2.hardware_version(),HEX);
Serial.print("setup: bootloader version: "); Serial.println(ccs811_2.bootloader_version(),HEX);
Serial.print("setup: application version: "); Serial.println(ccs811_2.application_version(),HEX);
// HDC1080
HDC1080_2.begin(0x40);
Serial.print("Manufacturer ID=0x");
Serial.println(HDC1080_2.readManufacturerId(), HEX); // 0x5449 ID of Texas Instruments
Serial.print("Device ID=0x");
Serial.println(HDC1080_2.readDeviceId(), HEX); // 0x1050 ID of the device
Serial.print("Device Serial Number=");
sernum = HDC1080_2.readSerialNumber();
sprintf(format, "%02X-%04X-%04X", sernum.serialFirst, sernum.serialMid, sernum.serialLast);
Serial.println(format);
vBootphase = false;
}
else
{
// Channel 1
SDApin = D2;
Wire.begin(SDApin, SCLpin);
delay(500);
// ** CCS811 **
Serial.print("\nSensor connected on: ");
Serial.print("SDA - ");Serial.print(SDApin); Serial.print(" | SCL - ");Serial.print(SCLpin);
Serial.print("\n");
ccs811_1.read(&eco2,&etvoc,&errstat,&raw);
delay(500);
Serial.print("ErrStat: ");Serial.print(errstat);Serial.print(" | ");Serial.println(ccs811_1.errstat_str(errstat));
if(!errstat==CCS811_ERRSTAT_OK)
{
Serial.print("CCS811-1: ");
Serial.println("Failed to read from sensor");
ccs811_1.begin();
delay(500);
ccs811_1.start(CCS811_MODE_1SEC);
}
else
{
Serial.print("CCS811-1: ");
Serial.print("eco2="); Serial.print(eco2); Serial.print(" ppm | ");
Serial.print("etvoc="); Serial.print(etvoc); Serial.print(" ppb");
Serial.print("\n");
}
// ** HDC1080 **
Serial.print("T="); Serial.print(HDC1080_1.readTemperature()); Serial.print("C");
Serial.print(", RH="); Serial.print(HDC1080_1.readHumidity()); Serial.println("%");
// Channel 2
SDApin = D6;
Wire.begin(SDApin, SCLpin);
delay(500);
// ** CCS811 **
Serial.print("Sensor connected on: ");
Serial.print("SDA - ");Serial.print(SDApin); Serial.print(" | SCL - ");Serial.print(SCLpin);
Serial.print("\n");
ccs811_2.read(&eco2,&etvoc,&errstat,&raw);
delay(500);
Serial.print("ErrStat: ");Serial.print(errstat);Serial.print(" | ");Serial.println(ccs811_2.errstat_str(errstat));
if(errstat!=CCS811_ERRSTAT_OK)
{
Serial.print("CCS811-2: ");
Serial.println("Failed to read from sensor");
ccs811_1.begin();
delay(500);
ccs811_2.start(CCS811_MODE_1SEC);
}
else
{
Serial.print("CCS811-2: ");
Serial.print("eco2="); Serial.print(eco2); Serial.print(" ppm | ");
Serial.print("etvoc="); Serial.print(etvoc); Serial.print(" ppb");
Serial.print("\n");
}
// ** HDC1080 **
Serial.print("T="); Serial.print(HDC1080_1.readTemperature()); Serial.print("C");
Serial.print(", RH="); Serial.print(HDC1080_1.readHumidity()); Serial.println("%");
delay(10000);
}
}