Multiple Slaves with SPI (MLX90333 Sensors and Arduino Micro)

Projects Networking, Protocols, and Devices
14

Okay this is the code after those changes and I am still seeing all zeros:

#include <SPI.h>
#include <stdint.h>

//*******Arduino MICRO SPI pins********
 
#define SS1 2

byte dataBuffer[8];

void setup() { 
  
  pinMode(SS1, OUTPUT);
  pinMode(SS, OUTPUT);

  digitalWrite(SS1, HIGH);
  digitalWrite(SS, HIGH);
  Serial.begin(9600); 
  SPI.begin;
}

void loop() {

  //Sensor 1
  delay(20); //MLX90333 startup takes 16ms
  SPI.beginTransaction(SPISettings(160000, MSBFIRST, SPI_MODE1)); //320000 is about max
  delay(5);
  int j;
  
  for (j=0; j<10; j++){
    digitalWrite(SS, LOW);
    delay(20);  //Short delay necessary here
    int i;
    for (i=0; i<8; i++){ 
      dataBuffer[i] = SPI.transfer(255);  // Must transfer 1's, 0's don't work
      }
    digitalWrite(SS, HIGH);

    
    SPI.endTransaction();
    Serial.print(dataBuffer[2],8); //Print 3rd byte, MSB for Alpha
    Serial.print(", ");
    Serial.print(dataBuffer[4],8); //Print 5th byte, MSB for Beta
    Serial.print(", ");
    }

  //Sensor 2
  delay(20); //MLX90333 startup takes 16ms
  SPI.beginTransaction(SPISettings(160000, MSBFIRST, SPI_MODE1)); //320000 is about max
  delay(5);

  
  for (j=0; j<10; j++){
    digitalWrite(SS1, LOW);
    delay(20);  //Short delay necessary here
    int i;
    for (i=0; i<8; i++){ 
      dataBuffer[i] = SPI.transfer(255);  // Must transfer 1's, 0's don't work
      }
    digitalWrite(SS1, HIGH);

    
    SPI.endTransaction();
    Serial.print(dataBuffer[2],8); //Print 3rd byte, MSB for Alpha
    Serial.print(", ");
    Serial.print(dataBuffer[4],8); //Print 5th byte, MSB for Beta
    Serial.print(", ");
    }

  }

My MOSI has a very low voltage and not much reaction to applying a field. Also when I look at the clock (SCLK) I see a voltage change when I apply a field to first sensor but not the second sensor.. shouldn't there be no reaction here?