SPI Not Working

[canooski 0]

I have a Dig Pot the TPL0501 by Texas Instruments that I am trying to control with a micro controller. 

 

Link Here:

 

http://www.ti.com/lit/ds/slis136a/slis136a.pdf

 

I have been able to successfully control this with my CC3200 and the output signals look like Photo 1 attatched.

 

I have since decided I want to do this with my MSP432 but I am not able to get it to work. The same code should work for each I assume.

 

The output signals I am getting for the MSP432 are shown in photo 2.

 

I have tried changing the mode but nothing seems to help. Any ideas?

 

 

My code is listed below:

 

#include <SPI.h>

 

const int SS = 18;

uint8_t value = 150;

void setup()

{

 

  pinMode(SS, OUTPUT);

  SPI.begin();

  digitalWrite(SS, HIGH);

  SPI.setBitOrder(MSBFIRST);

  SPI.setDataMode(SPI_MODE3);

  SPI.setClockDivider(SPI_CLOCK_DIV32);

 

}

 

void loop()

{

  digitalPotWrite(value);

  delay(100);

  

}

 

 

int digitalPotWrite(int x)

{

digitalWrite(SS, LOW);

SPI.transfer(x);

digitalWrite(SS, HIGH);

}