Revert "SPI library to new format"

Author: cmaglie

libraries/SPI/arch/avr/SPI.cpp renamed to hardware/arduino/avr/libraries/SPI/SPI.cpp

@@ -9,7 +9,7 @@
  */
 
 #include "pins_arduino.h"
-#include "SPI_Class.h"
+#include "SPI.h"
 
 SPIClass SPI;
 

libraries/SPI/arch/avr/SPI_Class.h renamed to hardware/arduino/avr/libraries/SPI/SPI.h

@@ -8,7 +8,7 @@
  * published by the Free Software Foundation.
  */
 
-#include "SPI_Class.h"
+#include "SPI.h"
 
 SPIClass::SPIClass(Spi *_spi, uint32_t _id, void(*_initCb)(void)) :
 	spi(_spi), id(_id), initCb(_initCb), initialized(false)

libraries/SPI/examples/BarometricPressureSensor/BarometricPressureSensor.ino renamed to hardware/arduino/avr/libraries/SPI/examples/BarometricPressureSensor/BarometricPressureSensor.ino

@@ -1,5 +1,5 @@
 /*
-  SCP1000 Barometric Pressure Sensor Display
+ SCP1000 Barometric Pressure Sensor Display
 
  Shows the output of a Barometric Pressure Sensor on a
  Uses the SPI library. For details on the sensor, see:
@@ -29,8 +29,9 @@
 const int PRESSURE = 0x1F;      //3 most significant bits of pressure
 const int PRESSURE_LSB = 0x20;  //16 least significant bits of pressure
 const int TEMPERATURE = 0x21;   //16 bit temperature reading
-cont byte READ = 0b00000000;     // SCP1000's read command
+const byte READ = 0b11111100;     // SCP1000's read command
 const byte WRITE = 0b00000010;   // SCP1000's write command
+
 // pins used for the connection with the sensor
 // the other you need are controlled by the SPI library):
 const int dataReadyPin = 6;
@@ -87,13 +88,14 @@ void loop() {
 unsigned int readRegister(byte thisRegister, int bytesToRead ) {
   byte inByte = 0;           // incoming byte from the SPI
   unsigned int result = 0;   // result to return
-
+  Serial.print(thisRegister, BIN);
+  Serial.print("\t");
   // SCP1000 expects the register name in the upper 6 bits
   // of the byte. So shift the bits left by two bits:
   thisRegister = thisRegister << 2;
   // now combine the address and the command into one byte
-  dataToSend = thisRegister & READ;
-
+  byte dataToSend = thisRegister & READ;
+  Serial.println(thisRegister, BIN);
   // take the chip select low to select the device:
   digitalWrite(chipSelectPin, LOW);
   // send the device the register you want to read:
@@ -127,7 +129,7 @@ void writeRegister(byte thisRegister, byte thisValue) {
   // of the byte. So shift the bits left by two bits:
   thisRegister = thisRegister << 2;
   // now combine the register address and the command into one byte:
-  dataToSend = thisRegister | WRITE;
+  byte dataToSend = thisRegister | WRITE;
 
   // take the chip select low to select the device:
   digitalWrite(chipSelectPin, LOW);
@@ -139,5 +141,3 @@ void writeRegister(byte thisRegister, byte thisValue) {
   digitalWrite(chipSelectPin, HIGH);
 }
 
-
-

libraries/SPI/examples/DigitalPotControl/DigitalPotControl.ino renamed to hardware/arduino/avr/libraries/SPI/examples/DigitalPotControl/DigitalPotControl.ino

@@ -0,0 +1,71 @@
+/*
+  Digital Pot Control
+
+  This example controls an Analog Devices AD5206 digital potentiometer.
+  The AD5206 has 6 potentiometer channels. Each channel's pins are labeled
+  A - connect this to voltage
+  W - this is the pot's wiper, which changes when you set it
+  B - connect this to ground.
+
+ The AD5206 is SPI-compatible,and to command it, you send two bytes,
+ one with the channel number (0 - 5) and one with the resistance value for the
+ channel (0 - 255).
+
+ The circuit:
+  * All A pins  of AD5206 connected to +5V
+  * All B pins of AD5206 connected to ground
+  * An LED and a 220-ohm resisor in series connected from each W pin to ground
+  * CS - to digital pin 10  (SS pin)
+  * SDI - to digital pin 11 (MOSI pin)
+  * CLK - to digital pin 13 (SCK pin)
+
+ created 10 Aug 2010
+ by Tom Igoe
+
+ Thanks to Heather Dewey-Hagborg for the original tutorial, 2005
+
+*/
+
+
+// inslude the SPI library:
+#include <SPI.h>
+
+
+// set pin 10 as the slave select for the digital pot:
+const int slaveSelectPin = 10;
+
+void setup() {
+  // set the slaveSelectPin as an output:
+  pinMode (slaveSelectPin, OUTPUT);
+  // initialize SPI:
+  SPI.begin();
+}
+
+void loop() {
+  // go through the six channels of the digital pot:
+  for (int channel = 0; channel < 6; channel++) {
+    // change the resistance on this channel from min to max:
+    for (int level = 0; level < 255; level++) {
+      digitalPotWrite(channel, level);
+      delay(10);
+    }
+    // wait a second at the top:
+    delay(100);
+    // change the resistance on this channel from max to min:
+    for (int level = 0; level < 255; level++) {
+      digitalPotWrite(channel, 255 - level);
+      delay(10);
+    }
+  }
+
+}
+
+void digitalPotWrite(int address, int value) {
+  // take the SS pin low to select the chip:
+  digitalWrite(slaveSelectPin, LOW);
+  //  send in the address and value via SPI:
+  SPI.transfer(address);
+  SPI.transfer(value);
+  // take the SS pin high to de-select the chip:
+  digitalWrite(slaveSelectPin, HIGH);
+}