16bit SPI transfer

Projects Programming
1

The code is below, I have highbyte and lowbytes set by switches. highbyte=00000000, lowbyte=00010000

    int sendcheck = digitalRead(sendbutton);
    if (sendcheck == HIGH) {
      highbyte = PINL;
      lowbyte = PINC;
      digitalWrite(SS, LOW);
      SPI.transfer(highbyte);
      SPI.transfer(lowbyte);
      digitalWrite(SS, HIGH);

here is the result of the code

How do I get rid of the high between the transfering the bytes?

2

What is MOSI doing then? You have data and control with SPI.

3

The picture is MOSI.

4

Is there a SCK pulse associated with the High on the data line?
If not, don't do anything. The receiving device certainly won't.

5

@ crossroads, there is not a clock pulse, so the chip will skip that data.

Here is a picture with the clock pulses. I think the Phase is wrong. I need CPOL=0 CPHA=1 which is datamode 1.
My chip locks the bit in on the high to low transition. Did I screw up the SPI setup?
here is my SPI code in the Void setup

//SPI
  SPI.begin();
  pinMode (SS, OUTPUT);
  digitalWrite(SS, HIGH);
  SPI.setBitOrder(MSBFIRST);
  SPI.setDataMode(1);

6

SPI mode, I've only ever used the standard mode. Not sure what the command is to change it.
Check here

Description
Sets the SPI data mode: that is, clock polarity and phase. See the Wikipedia article on SPI for details.

Syntax
SPI.setDataMode(mode)

Parameters
mode: SPI_MODE0, SPI_MODE1, SPI_MODE2, or SPI_MODE3