SPI question

Gordon,

Thanks for your help.

Here is the code to interface espruino to a max31855 chip. The max31855 is connected to a thermocouple to measure high temperature up to 1300C. Feel free to use it to create a new module for Espruino.

//setup SPI port
SPI1.setup({ miso:B4, sck:B3, baud:1000000 });

function getTemp() {
  //send command to get 32 bit word back from max31855
  var d = SPI1.send("\0\0\0\0",C0); 

  //calculate probe temperature
  eTemp = (d.charCodeAt(0)<<6 | d.charCodeAt(1)>>2)*0.25;

  //check for fault codes
  if (d.charCodeAt(1) & 1)  {
      fault = (d.charCodeAt(3) & 7);

    switch (fault) {
      case 1:
        console.log("No probe detected");
        break;
      case 3:
        console.log("Probe shorted to Ground");
        break;
      case 4:
        console.log("Probe shorted to VCC");
        break;
      default:
        break;


  }
  }

  
  
  else {
  //Print temperature

  console.log("EGT = "+eTemp + " C");
  }
}
  setInterval(getTemp, 250);