Issu with TCA9548A I2C multiplexer and ABP2 pressure sensor

Projects Programming
7

Library for TCA is Grove_8Channel_I2C_Hub from seed studio

#include "TCA9548A.h"

#include "SHT85.h"
#include <Wire.h>

#define SHT85_ADDRESS   0x44 //SHT31 I2C Adress

uint8_t id = 0x28; // i2c address for ABBP2 Sensor

#define WIRE Wire

#define SERIAL Serial

TCA9548A<TwoWire> TCA;  //mux adress directly on librarie = 0x70

SHT85 sht;

int channels[8]={TCA_CHANNEL_0,TCA_CHANNEL_1,TCA_CHANNEL_2,TCA_CHANNEL_3,TCA_CHANNEL_4,TCA_CHANNEL_5,TCA_CHANNEL_6,TCA_CHANNEL_7};

float hum1;  //Stores humidity value
float temp1; //Stores temp

double abppress1;  
double abptemp1;  

void setup()
{
  Serial.begin(115200);
  while(!SERIAL){};
  
  TCA.begin(WIRE);
}

void ReadSht (uint8_t Address, float *humidity, float *temperature)
{
  	sht.begin(Address);
    delay(5);
    sht.read();
    delay(5);
    *humidity=sht.getHumidity();
    *temperature=sht.getTemperature();
}

void ReadAbp2 (uint8_t Address, double *pressure, double *temperature)
{
uint8_t data[7]; // holds output data
double press_counts = 0; // digital pressure reading [counts]
double temp_counts = 0; // digital temperature reading [counts]
double outputmax =15099494; //15099494; //16777215 output at maximum pressure [counts]
double outputmin =1677722; //1677722; //0// output at minimum pressure [counts]
double pmax = 60; // maximum value of pressure range [bar, psi, kPa, etc.]
double pmin = 0; // minimum value of pressure range [bar, psi, kPa, etc.]
double percentage = 0; // holds percentage of full scale data
char  printBuffer[200], cBuff[20], percBuff[20], pBuff[20], tBuff[20];
uint8_t cmd[3] = {0xAA, 0x00, 0x00}; // command to be sent
int i = 0;

Wire.beginTransmission(Address);
int stat = Wire.write (cmd, 3); // write command to the sensor
stat |= Wire.endTransmission();
delay(10); //
Wire.requestFrom(Address, 7); // read back Sensor data 7 bytes
 
 for (i = 0; i < 7; i++) {
 data [i] = Wire.read();
 }
 press_counts = data[3] + data[2] * 256 + data[1] * 65536; // calculate digital pressure counts
 temp_counts = data[6] + data[5] * 256 + data[4] * 65536; // calculate digital temperature counts
 *temperature = (temp_counts * 200 / 16777215) - 50; // calculate temperature in deg c
 percentage = (press_counts / 16777215) * 100; // calculate pressure as percentage of full scale
 //calculation of pressure value according to equation 2 of datasheet
 *pressure = (((press_counts - outputmin) * (pmax - pmin)) / (outputmax - outputmin) + pmin)-0.21;
}


void loop()
{
TCA.openChannel(TCA_CHANNEL_0);

ReadAbp2(id,&abppress1,&abptemp1);

Serial.print("Abp2 : ");
Serial.print(abppress1);
Serial.print(";");
Serial.print(abptemp1);
Serial.println("");

TCA.closeChannel(TCA_CHANNEL_0);

TCA.openChannel(TCA_CHANNEL_1);

ReadSht(SHT85_ADDRESS,&hum1,&temp1);
Serial.print("SHT2 : ");
Serial.print(hum1);
Serial.print(";");
Serial.print(temp1);
Serial.println("");
TCA.closeChannel(TCA_CHANNEL_1);
}