/* 
 * File:   biscuit_central.c
 * Author: Red Bear Labs
 * modified by Brandon and Nick
 * Comments: Sets up opcodes to be sent out to HCI Bluetooth module
 * 
 * Revision history: Last Updated 12/13/15
 *                  Changed to C file and updated dependecies
 *                  modified write byte and enable notification function to 
 *                      allow different connection handlers a.k.a. target devices
 */
#include "typedef.h"
#include "central.h"
#include "ble_hci.h"
#include <string.h>

// Discovey mode (limited, general, all)
#define DEFAULT_DISCOVERY_MODE                DEVDISC_MODE_ALL

// TRUE to use active scan
#define DEFAULT_DISCOVERY_ACTIVE_SCAN         1

// TRUE to use white list during discovery
#define DEFAULT_DISCOVERY_WHITE_LIST          0

// TRUE to use high scan duty cycle when creating link
#define DEFAULT_LINK_HIGH_DUTY_CYCLE          0

// TRUE to use white list when creating link
#define DEFAULT_LINK_WHITE_LIST               0

void biscuit_central_init()
{
  GAPCentralRole_StartDevice();
}

void biscuit_central_start_discovery()
{
  GAPCentralRole_StartDiscovery( DEFAULT_DISCOVERY_MODE,
                                 DEFAULT_DISCOVERY_ACTIVE_SCAN,
                                 DEFAULT_DISCOVERY_WHITE_LIST );
}
                               
void biscuit_central_connect(uint8 *address)
{
  GAPCentralRole_EstablishLink( DEFAULT_LINK_HIGH_DUTY_CYCLE,
                                DEFAULT_LINK_WHITE_LIST,
                                0, address );
}


//modified to write to different handles
void biscuit_central_write_bytes(uint16 connHandle, uint8 *buf, uint8 len)
{
  attWriteReq_t writeReq;
  
  writeReq.handle = 0x0016;
  writeReq.len = len;
  memcpy(writeReq.value, buf, len);

  GATT_WriteCharValue( connHandle, &writeReq, 0 );
}

//modified to write to different handles
void biscuit_central_enable_notification(uint16 connHandle)
{
  attWriteReq_t writeReq;
  
  writeReq.handle = 0x0013;
  writeReq.len = 2;
  writeReq.value[0] = 0x01;
  writeReq.value[1] = 0x00;

  GATT_WriteCharValue( connHandle, &writeReq, 0 );
}

void biscuit_central_disconnect(uint16 connHandle) {
    GAP_TerminateLinkReq( connHandle, 0xFFFE );
}