Using spi1 from Linux

I got the spi1 interface, connected to the ICSP header in addition to one of the shield connectors, to work from Linux. I use the attached bash script to configure the gpio pins for this use. This allows the /dev/spidev1.0 device to be used. I also pasted a copy of the script below.

#!/bin/bash -e

# GPIO setup script for SPI1 on Galileo for Linux access

# Mark Rustad, mark.d.rustad@intel.com

gpio_path=/sys/class/gpio

gpio4="out 1"

gpio42="out 0 strong"

gpio43="out 0 strong"

gpio54="out 0 strong"

gpio55="out 0 strong"

gpios="4 42 43 54 55"

setup_gpio() {

  echo "Gpio ${1}: direction: $2, value: $3, drive: $4"

  echo -n $2 > $1/direction

  echo -n $3 > $1/value

  echo -n $4 > $1/drive

}

for i in ${gpios}; do

  gpio=${gpio_path}/gpio${i}

  if [ ! -d ${gpio} ]; then

  echo "Exporting gpio ${i}"

  echo -n ${i} > ${gpio_path}/export

  fi

done

for i in ${gpios}; do

  gpio=${gpio_path}/gpio${i}

  if [ -d ${gpio} ]; then

  gpiovar=gpio${i}

  setup_gpio ${gpio} ${!gpiovar}

  fi

done