//Include arduPi library 
#include "arduPi.h" 

char selected_channel[1];
char read_values[4];

int channel_0 = 0; 
int channel_1 = 0; 
int channel_2 = 0; 
int channel_3 = 0; 
int channel_4 = 0; 
int channel_5 = 0; 
int channel_6 = 0; 
int channel_7 = 0; 

float analog_0 = 0.0; 
float analog_1 = 0.0; 
float analog_2 = 0.0; 
float analog_3 = 0.0; 
float analog_4 = 0.0; 
float analog_5 = 0.0; 
float analog_6 = 0.0; 
float analog_7 = 0.0; 

void setup() 
{ 
  Wire.begin(); // join i2C bus (address optional for master) 
} 

void loop() 
{ 
  // channel 0 
  Wire.beginTransmission(8); 
  selected_channel[0] = 0xDC;
  Wire.read_rs(selected_channel, read_values, 2);
  Wire.read_rs(selected_channel, read_values, 2);
  channel_0 = int(read_values[0])*16 + int(read_values[1]>>4); 
  analog_0 = channel_0 * 5.0 / 4095.0;
  printf("Channel 0:\n");
  printf("Digital value = %d / Analog value = %fV\n\n", channel_0, analog_0); 


  // channel 1 
  Wire.beginTransmission(8); 
  selected_channel[0] = 0x9C;
  Wire.read_rs(selected_channel, read_values, 2);
  Wire.read_rs(selected_channel, read_values, 2);
  channel_1 = int(read_values[0])*16 + int(read_values[1]>>4); 
  analog_1 = channel_1 * 5.0 / 4095.0;
  printf("Channel 1:\n");
  printf("Digital value = %d / Analog value = %fV\n\n", channel_1, analog_1); 
  
 
  // channel 2 
  Wire.beginTransmission(8); 
  selected_channel[0] = 0xCC;
  Wire.read_rs(selected_channel, read_values, 2);
  Wire.read_rs(selected_channel, read_values, 2);
  channel_2 = int(read_values[0])*16 + int(read_values[1]>>4); 
  analog_2 = channel_2 * 5.0 / 4095.0;
  printf("Channel 2:\n");
  printf("Digital value = %d / Analog value = %fV\n\n", channel_2, analog_2); 
  
  
  // channel 3 
  Wire.beginTransmission(8); 
  selected_channel[0] = 0x8C;
  Wire.read_rs(selected_channel, read_values, 2);
  Wire.read_rs(selected_channel, read_values, 2);
  channel_3 = int(read_values[0])*16 + int(read_values[1]>>4); 
  analog_3 = channel_3 * 5.0 / 4095.0; 
  printf("Channel 3:\n");
  printf("Digital value = %d / Analog value = %fV\n\n", channel_3, analog_3); 
  
  
  // channel 4 
  Wire.beginTransmission(8); 
  selected_channel[0] = 0xAC;
  Wire.read_rs(selected_channel, read_values, 2);
  Wire.read_rs(selected_channel, read_values, 2);
  channel_4 = int(read_values[0])*16 + int(read_values[1]>>4); 
  analog_4 = channel_4 * 5.0 / 4095.0; 
  printf("Channel 4 (vertical header):\n");
  printf("Digital value = %d / Analog value = %fV\n\n", channel_4, analog_4); 
  
  
  // channel 5 
  Wire.beginTransmission(8); 
  selected_channel[0] = 0xEC;
  Wire.read_rs(selected_channel, read_values, 2);
  Wire.read_rs(selected_channel, read_values, 2);
  channel_5 = int(read_values[0])*16 + int(read_values[1]>>4); 
  analog_5 = channel_5 * 5.0 / 4095.0; 
  printf("Channel 5 (vertical header):\n");
  printf("Digital value = %d / Analog value = %fV\n\n", channel_5, analog_5); 
  
  
  // channel 6 
  Wire.beginTransmission(8); 
  selected_channel[0] = 0xBC;
  Wire.read_rs(selected_channel, read_values, 2);
  Wire.read_rs(selected_channel, read_values, 2);
  channel_6 = int(read_values[0])*16 + int(read_values[1]>>4); 
  analog_6 = channel_6 * 5.0 / 4095.0; 
  printf("Channel 6 (vertical header):\n");
  printf("Digital value = %d / Analog value = %fV\n\n", channel_6, analog_6); 
  
  
  // channel 7 
  Wire.beginTransmission(8); 
  selected_channel[0] = 0xFC;
  Wire.read_rs(selected_channel, read_values, 2);
  Wire.read_rs(selected_channel, read_values, 2);
  channel_7 = int(read_values[0])*16 + int(read_values[1]>>4); 
  analog_7 = channel_7 * 5.0 / 4095.0;
  printf("Channel 7 (vertical header):\n");
  printf("Digital value = %d / Analog value = %fV\n\n", channel_7, analog_7); 
  
  
  printf("***********************************\n"); 



  delay(1000); 

} 


int main (){ 
    setup(); 
    while(1){ 
        loop(); 
    } 
    return (0); 
}
                

/*  
 *  Raspberry Pi to Arduino Shields Connection Bridge
 *  
 *  Copyright (C) Libelium Comunicaciones Distribuidas S.L. 
 *  http://www.libelium.com 
 *  
 *  This program is free software: you can redistribute it and/or modify 
 *  it under the terms of the GNU General Public License as published by 
 *  the Free Software Foundation, either version 3 of the License, or 
 *  (at your option) any later version. 
 *  a
 *  This program is distributed in the hope that it will be useful, 
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License 
 *  along with this program.  If not, see http://www.gnu.org/licenses/. 
 *  
 *  Version:           2.0
 *  Design:            David Gascón 
 *  Implementation:    Jorge Casanova & Luis Martín
 */


//Include arduPi library
#include "arduPi.h"


void setup(){
    Wire.begin();
    Wire.beginTransmission(9);
    Wire.write('o'); //End the current Light script
    Wire.endTransmission();
}

void loop(){
    for (int i=0;i < 5;i++){
        Wire.beginTransmission(9);
        Wire.write('n'); //Change to color
        Wire.write(byte(0xff)); //Red component
        Wire.write(byte(0x00)); //Green component
        Wire.write(byte(0x00)); //Blue component
        Wire.endTransmission();

        delay(500);
        
        Wire.beginTransmission(9);
        Wire.write('n'); //Change to color
        Wire.write(byte(0x00)); //Red component
        Wire.write(byte(0x00)); //Green component
        Wire.write(byte(0xff)); //Blue component
        Wire.endTransmission();
        
        delay(500);
    }
    
    for (int i=0;i < 10;i++){
        Wire.beginTransmission(9);
        Wire.write('c'); //Fade to color
        Wire.write(byte(0xff)); //Red component
        Wire.write(byte(0x00)); //Green component
        Wire.write(byte(0x5a)); //Blue component
        Wire.endTransmission();

        delay(150);
        
        Wire.beginTransmission(9);
        Wire.write('c'); //Fade to color
        Wire.write(byte(0x55)); //Red component
        Wire.write(byte(0x20)); //Green component
        Wire.write(byte(0x5a)); //Blue component
        Wire.endTransmission();

        delay(150);
    }
}

int main (){
    setup();
    while(1){
        loop();
    }
    return (0);
}

/*  
 *  Raspberry Pi to Arduino Shields Connection Bridge
 *  
 *  Copyright (C) Libelium Comunicaciones Distribuidas S.L. 
 *  http://www.libelium.com 
 *  
 *  This program is free software: you can redistribute it and/or modify 
 *  it under the terms of the GNU General Public License as published by 
 *  the Free Software Foundation, either version 3 of the License, or 
 *  (at your option) any later version. 
 *  a
 *  This program is distributed in the hope that it will be useful, 
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of 
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License 
 *  along with this program.  If not, see http://www.gnu.org/licenses/. 
 *  
 *  Version:           2.0
 *  Design:            David Gascón 
 *  Implementation:    Jorge Casanova & Luis Martín
 */

//Include arduPi library
#include "arduPi.h"

int latchPin = 8;
unsigned char char1[]=" Cooking Hacks  ";
unsigned char char2[]="  SPI LCD for   ";
unsigned char char3[]="  Raspberry Pi  ";

void initialise();
void displayString(int X,int Y,unsigned char *ptr,int dat);
void writeCommand(int CMD);
void writeData(int CMD);
void writeByte(int dat);
void clear();

void setup(){
    SPI.begin();
    SPI.setBitOrder(MSBFIRST);
    SPI.setDataMode(SPI_MODE0);
    SPI.setClockDivider(SPI_CLOCK_DIV128);

    initialise();
}

void loop(){
    displayString(0,0,char1,16);
    delay(2000);
    clear();
    displayString(1,0,char2,16);
    displayString(2,0,char3,16);
    delay(2000);
    clear();
}

void initialise(){
    pinMode(latchPin, OUTPUT);     
    digitalWrite(latchPin, LOW);

    delayMicroseconds(80);

    writeCommand(0x30);
    writeCommand(0x0c);
    writeCommand(0x01);
    writeCommand(0x06);
}


void displayString(int X,int Y,unsigned char *ptr,int dat){
    int i;

    switch(X){
        case 0:  Y|=0x80;break;

        case 1:  Y|=0x90;break;

        case 2:  Y|=0x88;break;

        case 3:  Y|=0x98;break;

        default: break;
    }

    writeCommand(Y);

    for(i=0;i < dat;i++){ 
        writeData(ptr[i]);
    }

}

void writeCommand(int CMD){
    int H_data,L_data;
    H_data = CMD;
    H_data &= 0xf0;
    L_data = CMD;
    L_data &= 0x0f;
    L_data <<= 4;
    writeByte(0xf8);
    writeByte(H_data);
    writeByte(L_data);
}

void writeData(int CMD){
    int H_data,L_data;
    H_data = CMD;
    H_data &= 0xf0;
    L_data = CMD;
    L_data &= 0x0f;
    L_data <<= 4;
    writeByte(0xfa);
    writeByte(H_data);
    writeByte(L_data);
}

void writeByte(int dat){
    digitalWrite(latchPin, HIGH);
    delayMicroseconds(80);
    SPI.transfer(dat);
    digitalWrite(latchPin, LOW);
}

void clear(){
    writeCommand(0x30);
    writeCommand(0x01);
}


int main (){
    setup();
    while(1){
        loop();
    }
    return (0);
}