ble_luxsync.c

/* Copyright (c) 2012 Nordic Semiconductowrite
r. All Rights Reserved.
 *
 * The information contained herein is property of Nordic Semiconductor ASA.
 * Terms and conditions of usage are described in detail in NORDIC
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 *
 * Licensees are granted free, non-transferable use of the information. NO
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
 * the file.
 *
 */

/* Attention! 
*  To maintain compliance with Nordic Semiconductor ASA’s Bluetooth profile 
*  qualification listings, this section of source code must not be modified.
*/

#include "ble_luxsync.h"
#include <string.h>
#include "nordic_common.h"
#include "ble_srv_common.h"
#include "app_util.h"
#include "cy_io.h"
#include "m24m02.h"
#include "nrf_delay.h"

#include "defines.h"

#define MEMORY_LED_PIN_NO               LED_2

#define CHUNKS_PER_TRANSFER (8)
#define ENTRIES_PER_CHUNK	(60)

#define WRITE_LENGTH (7)
#define READ_LENGTH (ENTRIES_PER_CHUNK * WRITE_LENGTH)


//uint16_t read_length1 =0x69;//245;
//uint8_t write_lenth=7;

//uint8_t m_remaining_data=0;
//uint8_t databuffer[110]={0};
bool flag_send_data = false;

extern uint8_t sendDataFlag;
extern uint8_t fetchMoreData;


static luxsync_char_notifications_t   m_luxsync_char_notifications;

/**@brief Function for handling the Connect event.
 *
 * @param[in]   p_luxsync       Battery Service structure.
 * @param[in]   p_ble_evt   Event received from the BLE stack.
 */
static void on_connect(ble_luxsync_t * p_luxsync, ble_evt_t * p_ble_evt)
{
    p_luxsync->conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
}


/**@brief Function for handling the Disconnect event.
 *
 * @param[in]   p_luxsync       Battery Service structure.
 * @param[in]   p_ble_evt   Event received from the BLE stack.
 */
static void on_disconnect(ble_luxsync_t * p_luxsync, ble_evt_t * p_ble_evt)
{
    UNUSED_PARAMETER(p_ble_evt);
    p_luxsync->conn_handle = BLE_CONN_HANDLE_INVALID;
}


/**@brief Function for handling the Write event.
 *
 * @param[in]   p_luxsync       Battery Service structure.
 * @param[in]   p_ble_evt   Event received from the BLE stack.
 */
static void on_write(ble_luxsync_t * p_luxsync, ble_evt_t * p_ble_evt)
{
    ble_gatts_evt_write_t * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
    
    if ((p_evt_write->handle == p_luxsync->LuxSync_ACK_handles.value_handle) &&
        (p_evt_write->len == 1) &&
        (p_luxsync->Luxsync_ack_write_handler != NULL))
    {
        p_luxsync->Luxsync_ack_write_handler(p_luxsync, p_evt_write->data[0]);
    }
		if (p_luxsync->is_notification_supported)
    {
		  if ((p_evt_write->handle == p_luxsync->LuxSync_handles.cccd_handle)&&((p_evt_write->len == 2)))
			{  
				// CCCD written, set flags
				
			  if (ble_srv_is_notification_enabled(p_evt_write->data))
         {
					m_luxsync_char_notifications.lux_sync_notification_st =BLE_LUXSYNC_EVT_NOTIFICATION_ENABLED;
					}
				else 
				{
				 m_luxsync_char_notifications.lux_sync_notification_st =BLE_LUXSYNC_EVT_NOTIFICATION_DISABLED;
				}
									
			}
			else if ((p_evt_write->handle == p_luxsync->LuxSync_ACK_handles.cccd_handle)&&((p_evt_write->len == 2)))
			{  
				// CCCD written, set flags
				
			  if (ble_srv_is_notification_enabled(p_evt_write->data))
         {
					m_luxsync_char_notifications.lux_sync_act_notification_st =BLE_LUXSYNC_EVT_NOTIFICATION_ENABLED;
					}
				else 
				{
				 m_luxsync_char_notifications.lux_sync_act_notification_st = BLE_LUXSYNC_EVT_NOTIFICATION_DISABLED;
				}
			}
				
		}  
		
		    
		}


void ble_luxsync_on_ble_evt(ble_luxsync_t * p_luxsync, ble_evt_t * p_ble_evt)
{
    switch (p_ble_evt->header.evt_id)
    {
        case BLE_GAP_EVT_CONNECTED:
            on_connect(p_luxsync, p_ble_evt);
            break;
            
        case BLE_GAP_EVT_DISCONNECTED:
            on_disconnect(p_luxsync, p_ble_evt);
            break;
            
        case BLE_GATTS_EVT_WRITE:
            on_write(p_luxsync, p_ble_evt);
            break;
				
        case BLE_EVT_TX_COMPLETE:
					sendDataFlag = 1;
					   if(flag_send_data)
						 { 
							 send_data_stream_ble(p_luxsync, fetchMoreData, 0);
							 if ( fetchMoreData ) 
							   fetchMoreData = 0;
						 }
						 
						 
						 
            //heart_rate_meas_send();
            break;    
				
        default:
            // No implementation needed.
            break;
    }
		
	
						 
}


/**@brief Function for adding the Battery Level characteristic.
 *
 * @param[in]   p_luxsync        Battery Service structure.
 * @param[in]   p_luxsync_init   Information needed to initialize the service.
 *
 * @return      NRF_SUCCESS on success, otherwise an error code.
 */
static uint32_t LuxSync_char_add(ble_luxsync_t * p_luxsync, const ble_luxsync_init_t * p_luxsync_init)
{
    ble_gatts_char_md_t char_md;
    ble_gatts_attr_md_t cccd_md;
    ble_gatts_attr_t    attr_char_value;
    ble_uuid_t          ble_uuid;
    ble_gatts_attr_md_t attr_md;
        
    
    // Add LuxSync characteristic
	if(p_luxsync->is_notification_supported)
	{
    memset(&cccd_md, 0, sizeof(cccd_md));
                
    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm);
    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm);
		cccd_md.vloc = BLE_GATTS_VLOC_STACK;
	}  
    memset(&char_md, 0, sizeof(char_md));
    
    char_md.char_props.read   = 1;
    char_md.char_props.notify = (p_luxsync->is_notification_supported)? 1 : 0;;
    char_md.p_char_user_desc  = NULL;
    char_md.p_char_pf         = NULL;
    char_md.p_user_desc_md    = NULL;
    char_md.p_cccd_md         = (p_luxsync->is_notification_supported)? &cccd_md: NULL;
    char_md.p_sccd_md         = NULL;
    
    //Add UUID for the CHAR
		ble_uuid.type = p_luxsync->uuid_type;
    ble_uuid.uuid =LuxSync_UUID_SYNC_CHAR;
		
		memset(&attr_md, 0, sizeof(attr_md));
    
		BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
    BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&attr_md.write_perm);
    attr_md.vloc       = BLE_GATTS_VLOC_STACK;
    attr_md.rd_auth    = 0;
    attr_md.wr_auth    = 0;
    attr_md.vlen       = 0;
    
    memset(&attr_char_value, 0, sizeof(attr_char_value));

    attr_char_value.p_uuid       = &ble_uuid;
    attr_char_value.p_attr_md    = &attr_md;
    attr_char_value.init_len     = sizeof(uint8_t);
    attr_char_value.init_offs    = 0;
    attr_char_value.max_len      = 7;
		attr_char_value.p_value      = NULL;
		
				
    return sd_ble_gatts_characteristic_add(p_luxsync->service_handle, &char_md,
                                               &attr_char_value,
                                               &p_luxsync->LuxSync_handles);
        
     
}

static uint32_t LuxSync_ACK_add(ble_luxsync_t * p_lbs, const ble_luxsync_init_t * p_lbs_init)
{
    ble_gatts_char_md_t char_md;
    ble_gatts_attr_t    attr_char_value;
    ble_uuid_t          ble_uuid;
    ble_gatts_attr_md_t attr_md;

    memset(&char_md, 0, sizeof(char_md));
    
    char_md.char_props.read   = 1;
    char_md.char_props.write = 1;
	  char_md.char_props.notify = 1;
    char_md.p_char_user_desc  = NULL;
    char_md.p_char_pf         = NULL;
    char_md.p_user_desc_md    = NULL;
    char_md.p_sccd_md         = NULL;
    
    ble_uuid.type = p_lbs->uuid_type;
    ble_uuid.uuid = LuxSync_UUID_SYNC_ACK_CHAR;
    
    memset(&attr_md, 0, sizeof(attr_md));

    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
    BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);
    attr_md.vloc       = BLE_GATTS_VLOC_STACK;
    attr_md.rd_auth    = 0;
    attr_md.wr_auth    = 0;
    attr_md.vlen       = 0;
    
    memset(&attr_char_value, 0, sizeof(attr_char_value));

    attr_char_value.p_uuid       = &ble_uuid;
    attr_char_value.p_attr_md    = &attr_md;
    attr_char_value.init_len     = sizeof(uint8_t);
    attr_char_value.init_offs    = 0;
    attr_char_value.max_len      = sizeof(uint8_t);
    attr_char_value.p_value      = NULL;
    
    return sd_ble_gatts_characteristic_add(p_lbs->service_handle, &char_md,
                                               &attr_char_value,
                                               &p_lbs->LuxSync_ACK_handles);
}


uint32_t ble_luxsync_init(ble_luxsync_t * p_luxsync, const ble_luxsync_init_t * p_luxsync_init)
{
    uint32_t   err_code;
    ble_uuid_t ble_uuid;

    // Initialize service structure
    p_luxsync->evt_handler               = p_luxsync_init->evt_handler;
	  p_luxsync->Luxsync_ack_write_handler    = p_luxsync_init->Luxsync_ack_write_handler;
    p_luxsync->conn_handle               = BLE_CONN_HANDLE_INVALID;
    p_luxsync->is_notification_supported = p_luxsync_init->support_notification;
    
    
    // Add service
    ble_uuid128_t base_uuid = LuxSync_UUID_BASE;
    err_code = sd_ble_uuid_vs_add(&base_uuid, &p_luxsync->uuid_type);
    if (err_code != NRF_SUCCESS)
    {
        return err_code;
    }
		
		ble_uuid.type = p_luxsync->uuid_type;
    ble_uuid.uuid = LuxSync_UUID_SERVICE;
		err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &ble_uuid, &p_luxsync->service_handle);
    if (err_code != NRF_SUCCESS)
    {
        return err_code;
    }
    // Add Lux Sync characteristic
	  err_code = LuxSync_char_add(p_luxsync, p_luxsync_init);
    if (err_code != NRF_SUCCESS)
    {
        return err_code;
    }
		// Add Lux Sync ACK characteristic
	  err_code = LuxSync_ACK_add(p_luxsync, p_luxsync_init);
    if (err_code != NRF_SUCCESS)
    {
        return err_code;
    }
		
      return NRF_SUCCESS;
}


uint32_t ble_luxsync_write_update(ble_luxsync_t * p_luxsync, uint8_t *mem_data,uint8_t buff_length)
{
 
	uint32_t err_code = NRF_SUCCESS;  	    		        
        // Send value if connected and notifying
 if ((p_luxsync->conn_handle != BLE_CONN_HANDLE_INVALID) )
        {
           uint8_t  encoded_buffer[7];
					 uint8_t i;
					
          for (i=0;i<buff_length;i++)
					{
						encoded_buffer[i]=*(mem_data+i);
					}
					  uint16_t               len;
						len = buff_length;//sizeof(mem_data);
					  //err_code =sd_ble_gatts_value_set(p_luxsync->LuxSync_handles.value_handle,0,&len,encoded_buffer);
					  if (err_code != NRF_SUCCESS)
					{
							return err_code;
					}                                                                           
						ble_gatts_hvx_params_t hvx_params;
            memset(&hvx_params, 0, sizeof(hvx_params));
                
            hvx_params.handle   = p_luxsync->LuxSync_handles.value_handle;
            hvx_params.type     = BLE_GATT_HVX_NOTIFICATION;
            //hvx_params.offset   = 0;
            hvx_params.p_len    = &len;
            hvx_params.p_data   = encoded_buffer;
					  err_code = sd_ble_gatts_hvx(p_luxsync->conn_handle, &hvx_params);
         }   
     return err_code;
								

}

uint32_t ble_luxsync_ACK_update(ble_luxsync_t * p_luxsync, uint8_t Lux_Ack)
{
    uint32_t err_code = NRF_SUCCESS;
	  ble_gatts_hvx_params_t hvx_params;
    uint16_t len = sizeof(Lux_Ack);
    
    memset(&hvx_params, 0, sizeof(hvx_params));
    hvx_params.type = BLE_GATT_HVX_NOTIFICATION;
    hvx_params.handle = p_luxsync->LuxSync_ACK_handles.value_handle;
    hvx_params.p_data = &Lux_Ack;
    hvx_params.p_len = &len;
    err_code = sd_ble_gatts_hvx(p_luxsync->conn_handle, &hvx_params);
	  //err_code=NRF_SUCCESS;
    return err_code;
			
		
}
//sync


void send_data_stream(ble_luxsync_t * p_luxsync)
{
	
	
  uint32_t err_code = NRF_SUCCESS;
  ble_luxsync_ACK_update(p_luxsync,0x02);    // •	The device acknowledges by changing it to 0x02 and starts sending data 
	nrf_gpio_pin_clear(MEMORY_LED_PIN_NO);     // to indicate Memory is busy
	
	//code
	nrf_delay_ms(200);
	//uint32_t present_mem_ptr=30;  //eeprom_find_add_pointer();
	//uint32_t i=0;
 
	
	
  
	//(

  print("Starting transmission\r\n");
	flag_send_data=true;
  err_code=send_data_stream_ble(p_luxsync, 1, 1);
	
	
/*	if(!(i2c_eeprom_read(((uint32_t) i),(uint8_t *)&databuffer[0], (uint32_t) read_length1)))
		 {
			 err_code = 0xDB; //Memory not read 
		 }
 if(err_code!=0xDB)  // if EEp rom read 
		 {
			 flag_send_data=true;
			 err_code=send_data_stream_ble(p_luxsync);
	   }
		 

	if (err_code==0xDB)
	{
		ble_luxsync_ACK_update(p_luxsync,0x05); // indicates memory not read
	  nrf_gpio_pin_set(MEMORY_LED_PIN_NO);
	 }
  else if(err_code==BLE_ERROR_NO_TX_BUFFERS){} //do nothing ,wait for intrupt from on_evt
	else 
		{
			ble_luxsync_ACK_update(p_luxsync,0x04);   //•	Once all the data is sent it changes sync ACk to 0x04 indicating end of data stream
			nrf_gpio_pin_set(MEMORY_LED_PIN_NO);
			flag_send_data=false;
		}	
	*/
	
}

/*
	if(!(i2c_eeprom_read(((uint32_t) i),(uint8_t *)&databuffer[0], (uint32_t) read_length1)))
		 {
			 err_code = 0xDB; //Memory not read 
		 }
 if(err_code!=0xDB)  // if EEp rom read 
		 {
			 flag_send_data=true;
			 err_code=send_data_stream_ble(p_luxsync);
	   }
*/		 

uint32_t send_data_stream_ble(ble_luxsync_t * p_luxsync, uint8_t fetchData, uint8_t init)
{
	static uint8_t databuffer[READ_LENGTH+10];
	static uint32_t currentPosition = 0;
	
	static uint32_t stopPosition = 0;
	static uint32_t remainingData = 0;
	static uint16_t read_length;
	uint32_t err_code = NRF_SUCCESS;
	static uint32_t endOfChunk = 0;
	static int x = 0;
		
	
	if ( init ) 
	{
		currentPosition = 0;
		stopPosition = eeprom_find_add_pointer();
		remainingData = 0;
	}
	
	if ( fetchData )
	{
		print("Getting more data\r\n");
		endOfChunk = currentPosition + READ_LENGTH * CHUNKS_PER_TRANSFER; 
	}
	
	if ( currentPosition < endOfChunk )
		fetchData = 1;
	
	do {
		
		if ( remainingData <= 0 && fetchData )
		{
			
			if ( (stopPosition - currentPosition) < READ_LENGTH )
				read_length = stopPosition - currentPosition;
			else
				read_length = READ_LENGTH;
			
			if ( !(i2c_eeprom_read(currentPosition,databuffer, read_length)) )
				 {
					 err_code = 0xDB; //Memory not read 
				 }
			else
				 {
					 print("*[%d]", currentPosition);
					 remainingData = read_length;
					 currentPosition += read_length;
				 }
			}	
		
			
		
print(".");		
		while(remainingData > 0 ) //< read_length)
		{

			err_code=ble_luxsync_write_update(p_luxsync,databuffer+(read_length-remainingData),WRITE_LENGTH);
			if ( err_code== NRF_SUCCESS||
					 err_code==BLE_ERROR_GATTS_SYS_ATTR_MISSING||
					 err_code==NRF_ERROR_INVALID_STATE) 
					{
					// Ignore error.
		//			m_remaining_data =(m_remaining_data+write_lenth);
						remainingData -= WRITE_LENGTH;
					}
					else if (err_code==BLE_ERROR_NO_TX_BUFFERS )
					{
						//print(".[%d]", remainingData);
					 break;
					}
					else 
					{
//					APP_ERROR_HANDLER(err_code);
														
					}	
		}
print("/");
		
		print("%d %d %d\r\n", currentPosition, endOfChunk, stopPosition);
	} while( currentPosition < endOfChunk && currentPosition < stopPosition && err_code != BLE_ERROR_NO_TX_BUFFERS );
print("E");

	
//		nrf_gpio_pin_set(MEMORY_LED_PIN_NO); /// debug
		
	//if (m_remaining_data>=read_length1)
	if ( currentPosition >= stopPosition ) 
	{
//		nrf_delay_ms(50);
		err_code = ble_luxsync_ACK_update(p_luxsync,0x04);   //•	Once all the data is sent it changes sync ACk to 0x04 indicating end of data stream
		
		if ( err_code== NRF_SUCCESS||
					 err_code==BLE_ERROR_GATTS_SYS_ATTR_MISSING||
					 err_code==NRF_ERROR_INVALID_STATE) 
					{
					// Ignore error.
						nrf_gpio_pin_set(MEMORY_LED_PIN_NO);
						flag_send_data=false;
						
						print("DONE transmitting\r\n");
						
						//timers_start();				
					}
/*					else if (err_code==BLE_ERROR_NO_TX_BUFFERS )
					{
		//			 break;
					}
					else 
					{
					APP_ERROR_HANDLER(err_code);
					}	 */
		
	}
 return err_code;
}


void upload_done(ble_luxsync_t * p_luxsync)
{ 
  ble_luxsync_ACK_update(p_luxsync,0x09);
	//lux_timers_stop();
	nrf_gpio_pin_clear(MEMORY_LED_PIN_NO);     // to indicate Memory is busy
	//code to erase memory
	i2c_eeprom_erase();
	//timers_start();
	eeprom_updateadd_pointer((uint32_t)0x00);
	nrf_gpio_pin_set(MEMORY_LED_PIN_NO);
	NVIC_SystemReset(); // reset device as the connection usually fails during erase. 
}