littleWire.h

#ifndef LITTLEWIRE_H
#define LITTLEWIRE_H

/*
  Cross platform computer interface library for Little Wire project

  http://littlewire.github.io

  Copyright (C) <2013> ihsan Kehribar <ihsan@kehribar.me>
  Copyright (C) <2013> Omer Kilic <omerkilic@gmail.com>

  Permission is hereby granted, free of charge, to any person obtaining a copy of
  this software and associated documentation files (the "Software"), to deal in
  the Software without restriction, including without limitation the rights to
  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  of the Software, and to permit persons to whom the Software is furnished to do
  so, subject to the following conditions:

  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
*/

#if defined(LINUX)
   #include <usb.h>                             // this is libusb, see http://libusb.sourceforge.net/
#else
   #include <lusb0_usb.h>               // this is libusb, see http://libusb.sourceforge.net/
#endif
#include "opendevice.h"                 // common code moved to separate module
#include "littleWire_util.h"
#include <stdio.h>

#define VENDOR_ID 0x1781
#define PRODUCT_ID 0x0c9f
#define USB_TIMEOUT 5000
#define RX_BUFFER_SIZE 64

#define INPUT 1
#define OUTPUT 0

#define ENABLE 1
#define DISABLE 0

#define HIGH 1
#define LOW      0

#define AUTO_CS 1
#define MANUAL_CS 0

// Voltage ref definition
#define VREF_VCC 0
#define VREF_1100mV 1
#define VREF_2560mV 2 

// I2C definition
#define END_WITH_STOP 1
#define NO_STOP 0
#define READ 1
#define WRITE 0

// General Purpose Pins
#define PIN1 1
#define PIN2 2
#define PIN3 5
#define PIN4 0

// ADC Channels
#define ADC_PIN3 0
#define ADC_PIN2 1
#define ADC_TEMP_SENS 2

// PWM Pins
#define PWM1 PIN4
#define PWM2 PIN1

// Aliases
#define ADC0 ADC_PIN3
#define ADC1 ADC_PIN2
#define ADC2 ADC_TEMP_SENS
#define PWMA PWM1
#define PWMB PWM2

// 'AVR ISP' Pins
#define SCK_PIN PIN2
#define MISO_PIN PIN1
#define MOSI_PIN PIN4
#define RESET_PIN PIN3

unsigned char rxBuffer[RX_BUFFER_SIZE]; /* This has to be unsigned for the data's sake */
unsigned char ROM_NO[8];
int lwStatus;

typedef usb_dev_handle littleWire;

typedef struct lwCollection
{
  struct usb_device* lw_device;
  int serialNumber;  
}lwCollection;

lwCollection lwResults[16];

int lw_totalDevices;

int littlewire_search();

littleWire* littlewire_connect_byID(int desiredID);

littleWire* littlewire_connect_bySerialNum(int mySerial);

littleWire* littleWire_connect();

unsigned char readFirmwareVersion(littleWire* lwHandle);

void changeSerialNumber(littleWire* lwHandle,int serialNumber);

int customMessage(littleWire* lwHandle,unsigned char* receiveBuffer,unsigned char command,unsigned char d1,unsigned char d2, unsigned char d3, unsigned char d4);

int littleWire_error ();

char *littleWire_errorName ();

void digitalWrite(littleWire* lwHandle, unsigned char pin, unsigned char state);

void pinMode(littleWire* lwHandle, unsigned char pin, unsigned char mode);

unsigned char digitalRead(littleWire* lwHandle, unsigned char pin);

void internalPullup(littleWire* lwHandle, unsigned char pin, unsigned char state);

void analog_init(littleWire* lwHandle, unsigned char voltageRef);

unsigned int analogRead(littleWire* lwHandle, unsigned char channel);

void pwm_init(littleWire* lwHandle);

void pwm_stop(littleWire* lwHandle);

void pwm_updateCompare(littleWire* lwHandle, unsigned char channelA, unsigned char channelB);

void pwm_updatePrescaler(littleWire* lwHandle, unsigned int value);

void spi_init(littleWire* lwHandle);

void spi_sendMessage(littleWire* lwHandle, unsigned char * sendBuffer, unsigned char * inputBuffer, unsigned char length ,unsigned char mode);

unsigned char debugSpi(littleWire* lwHandle, unsigned char message);

void spi_updateDelay(littleWire* lwHandle, unsigned int duration);

void i2c_init(littleWire* lwHandle);

unsigned char i2c_start(littleWire* lwHandle, unsigned char address7bit, unsigned char direction);

void i2c_write(littleWire* lwHandle, unsigned char* sendBuffer, unsigned char length, unsigned char endWithStop);

void i2c_read(littleWire* lwHandle, unsigned char* readBuffer, unsigned char length, unsigned char endWithStop);

void i2c_updateDelay(littleWire* lwHandle, unsigned int duration);

void onewire_sendBit(littleWire* lwHandle, unsigned char bitValue);

void onewire_writeByte(littleWire* lwHandle, unsigned char messageToSend);

unsigned char onewire_readByte(littleWire* lwHandle);

unsigned char onewire_readBit(littleWire* lwHandle);

unsigned char onewire_resetPulse(littleWire* lwHandle);

int onewire_firstAddress(littleWire* lwHandle);

int onewire_nextAddress(littleWire* lwHandle);

void softPWM_state(littleWire* lwHandle,unsigned char state);

void softPWM_write(littleWire* lwHandle,unsigned char ch1,unsigned char ch2,unsigned char ch3);

void ws2812_write(littleWire* lwHandle, unsigned char pin,unsigned char r,unsigned char g,unsigned char b);

void ws2812_flush(littleWire* lwHandle, unsigned char pin);

void ws2812_preload(littleWire* lwHandle, unsigned char r,unsigned char g,unsigned char b);

#endif