simpleBLEPeripheral.c 文件分析

这个配置或者说任务, 让这个蓝牙设备成为了一个简单的BLE外设.

这里定义了外设的广播数据, 以及最重要, char被改变之后的回调, 引出后来的coreHandler里面的, ack 以及写e2prom.

/**************************************************************************************************

**************************************************************************************************/

/*********************************************************************
* INCLUDES
*/
#include <stdio.h>
#include "bcomdef.h"
#include "OSAL.h"
#include "OSAL_PwrMgr.h"

#include "OnBoard.h"
#include "hal_adc.h"
#include "hal_led.h"
#include "hal_key.h"
#include "hal_lcd.h"
#include "npi.h"
#include "gatt.h"
#include "GUA_Timer1.h"
#include "hci.h"

#include "gapgattserver.h"
#include "gattservapp.h"
#include "devinfoservice.h"
#include "simpleGATTprofile.h"

#if defined( CC2540_MINIDK )
#include "simplekeys.h"
#endif

#if defined ( PLUS_BROADCASTER )
#include "peripheralBroadcaster.h"
#else
#include "peripheral.h"
#endif

#include "gapbondmgr.h"

#include "simpleBLEPeripheral.h"

#if defined FEATURE_OAD
#include "oad.h"
#include "oad_target.h"
#endif

#include "coreHandler.h"

/*********************************************************************
* MACROS
*/

/*********************************************************************
* CONSTANTS
*/

// How often to perform periodic event
#define SBP_PERIODIC_EVT_PERIOD 5000

//定义广播间隔.
// What is the advertising interval when device is discoverable (units of 625us, 160=100ms)
#define DEFAULT_ADVERTISING_INTERVAL 160

//有限发现模式会限制在开机内30.72s内发现, 之后就无法再被发现了.
// Limited discoverable mode advertises for 30.72s, and then stops

//普通模式没有限制.
// General discoverable mode advertises indefinitely

#if defined ( CC2540_MINIDK )
#define DEFAULT_DISCOVERABLE_MODE GAP_ADTYPE_FLAGS_LIMITED
#else
#define DEFAULT_DISCOVERABLE_MODE GAP_ADTYPE_FLAGS_GENERAL
#endif // defined ( CC2540_MINIDK )

//定义默认连接间隔, 80相当于100ms
// Minimum connection interval (units of 1.25ms, 80=100ms) if automatic parameter update request is enabled
#define DEFAULT_DESIRED_MIN_CONN_INTERVAL 80

//定义默认最大连接间隔,800ms,
// Maximum connection interval (units of 1.25ms, 800=1000ms) if automatic parameter update request is enabled
#define DEFAULT_DESIRED_MAX_CONN_INTERVAL 800

//latency是0
// Slave latency to use if automatic parameter update request is enabled
#define DEFAULT_DESIRED_SLAVE_LATENCY 0

//断线超时时间为1000即10s, 就是收不到连接10s后,就会判断连接已经断开.
// Supervision timeout value (units of 10ms, 1000=10s) if automatic parameter update request is enabled
#define DEFAULT_DESIRED_CONN_TIMEOUT 1000

//是否自动更新配置信息.
// Whether to enable automatic parameter update request when a connection is formed
#define DEFAULT_ENABLE_UPDATE_REQUEST TRUE
// Connection Pause Peripheral time value (in seconds)
#define DEFAULT_CONN_PAUSE_PERIPHERAL 6

//公司识别ID
// Company Identifier: Texas Instruments Inc. (13)
#define TI_COMPANY_ID 0x000D

#define INVALID_CONNHANDLE 0xFFFF

// Length of bd addr as a string
#define B_ADDR_STR_LEN 15

#if defined ( PLUS_BROADCASTER )
#define ADV_IN_CONN_WAIT 500 // delay 500 ms
#endif

/*********************************************************************
* TYPEDEFS
*/

/*********************************************************************
* GLOBAL VARIABLES
*/

/*********************************************************************
* EXTERNAL VARIABLES
*/

/*********************************************************************
* EXTERNAL FUNCTIONS
*/

/*********************************************************************
* LOCAL VARIABLES

本地变量
*/

//这个task的taskID
static uint8 simpleBLEPeripheral_TaskID; // Task ID for internal task/event processing
//GAPROLE中断的一个结构体.
static gaprole_States_t gapProfileState = GAPROLE_INIT;

//GAP: 扫描回应的数据, 最多能有31个byte
// GAP - SCAN RSP data (max size = 31 bytes)
static uint8 scanRspData[] =
{
// complete name

//完整的名称.
0x09,   // length of this data 数据长度.
GAP_ADTYPE_LOCAL_NAME_COMPLETE, //下面定义完整的设备名称.
0x48, //H
0x58, //X
0x53, //S
0x63, //c
0x72, //r
0x65, //e
0x65, //e
0x6E, //n
#if 0
0x53,   // 'S'
0x69,   // 'i'
0x6d,   // 'm'
0x70,   // 'p'
0x6c,   // 'l'
0x65,   // 'e'
0x42,   // 'B'
0x4c,   // 'L'
0x45,   // 'E'
0x50,   // 'P'
0x65,   // 'e'
0x72,   // 'r'
0x69,   // 'i'
0x70,   // 'p'
0x68,   // 'h'
0x65,   // 'e'
0x72,   // 'r'
0x61,   // 'a'
0x6c,   // 'l'
0x6c,   //
#endif
// connection interval range 连接的间隔范围.
0x05,   // length of this data //这段数据的长度.
GAP_ADTYPE_SLAVE_CONN_INTERVAL_RANGE, //连接间隔范围.
LO_UINT16( DEFAULT_DESIRED_MIN_CONN_INTERVAL ),   // 100ms
HI_UINT16( DEFAULT_DESIRED_MIN_CONN_INTERVAL ),
LO_UINT16( DEFAULT_DESIRED_MAX_CONN_INTERVAL ),   // 1s
HI_UINT16( DEFAULT_DESIRED_MAX_CONN_INTERVAL ),

// Tx power level
0x02, // length of this data还是长度
GAP_ADTYPE_POWER_LEVEL,//发射强度级别
0 // 0dBm 最高!
};

//GAP广告数据
// GAP - Advertisement data (max size = 31 bytes, though this is
// best kept short to conserve power while advertisting)
static uint8 advertData[] =
{
// Flags; this sets the device to use limited discoverable 标识: 设置设备是否可以被发现.
// mode (advertises for 30 seconds at a time) instead of general 模式, 是完全被发现模式还是限制级.
// discoverable mode (advertises indefinitely) 发现模式, 广播
0x02, // length of this data
GAP_ADTYPE_FLAGS,
DEFAULT_DISCOVERABLE_MODE | GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED,

// service UUID, to notify central devices what services are included
// in this peripheral
0x03, // length of this data
GAP_ADTYPE_16BIT_MORE, // some of the UUID's, but not all
LO_UINT16( SIMPLEPROFILE_SERV_UUID ),
HI_UINT16( SIMPLEPROFILE_SERV_UUID ),

};

// GAP GATT Attributes
static uint8 attDeviceName[GAP_DEVICE_NAME_LEN] = "MyBLEPeripheralDevice";

//att的设备名.

/*********************************************************************
* LOCAL FUNCTIONS
*/
static void simpleBLEPeripheral_ProcessOSALMsg( osal_event_hdr_t *pMsg );
static void peripheralStateNotificationCB( gaprole_States_t newState );
static void performPeriodicTask( void );
static void simpleProfileChangeCB( uint8 paramID );

#if defined( CC2540_MINIDK )
static void simpleBLEPeripheral_HandleKeys( uint8 shift, uint8 keys );
#endif

#if (defined HAL_LCD) && (HAL_LCD == TRUE)
static char *bdAddr2Str ( uint8 *pAddr );
#endif // (defined HAL_LCD) && (HAL_LCD == TRUE)

/*********************************************************************
* PROFILE CALLBACKS
*/

//GAP角色回调
// GAP Role Callbacks
static gapRolesCBs_t simpleBLEPeripheral_PeripheralCBs =
{
peripheralStateNotificationCB, // Profile State Change Callbacks 当GAP的P的状态如果发现改变时的回调就是这个peripheralStateNotificationCB.
NULL // When a valid RSSI is read from controller (not used by application)
};

//GAP绑定管理回调
// GAP Bond Manager Callbacks
static gapBondCBs_t simpleBLEPeripheral_BondMgrCBs =
{
NULL, // Passcode callback (not used by application)
NULL // Pairing / Bonding state Callback (not used by application)
};

//建议GATT的profile回调
// Simple GATT Profile Callbacks
static simpleProfileCBs_t simpleBLEPeripheral_SimpleProfileCBs =
{
simpleProfileChangeCB // Charactersitic value change callback 这个是GATT的特征值被改变时的回调.
};

/*********************************************************************
* PUBLIC FUNCTIONS
*/
static void NpiSerialCallback( uint8 port, uint8 events );
/*********************************************************************
* @fn      SimpleBLEPeripheral_Init
*
* @brief   Initialization function for the Simple BLE Peripheral App Task.
*          This is called during initialization and should contain
*          any application specific initialization (ie. hardware
*          initialization/setup, table initialization, power up
*          notificaiton ... ).
*
* @param   task_id - the ID assigned by OSAL. This ID should be
*                    used to send messages and set timers.
*
* @return none
*/
void SimpleBLEPeripheral_Init( uint8 task_id )
{
//taskID
simpleBLEPeripheral_TaskID = task_id;

//定时器1初始化
GUA_Timer1_Init();

//NPI中断初始化
NPI_InitTransport(NpiSerialCallback);

//NPI输出
NPI_WriteTransport("SimpleBLETest_Init\r\n", 20);

// Setup the GAP, 设置GAP
VOID GAP_SetParamValue( TGAP_CONN_PAUSE_PERIPHERAL, DEFAULT_CONN_PAUSE_PERIPHERAL );

//设置GAP外设角色
// Setup the GAP Peripheral Role Profile
{
#if defined( CC2540_MINIDK )
// For the CC2540DK-MINI keyfob, device doesn't start advertising until button is pressed

//CC2540K-Mini的硬件, 要按一下按钮, 才开始广告.
      uint8 initial_advertising_enable = FALSE;
    #else
      // For other hardware platforms, device starts advertising upon initialization

//其他硬件一开始就广告.
uint8 initial_advertising_enable = TRUE;
#endif

// By setting this to zero, the device will go into the waiting state after
// being discoverable for 30.72 second, and will not being advertising again
// until the enabler is set back to TRUE

//这里设置为0, 设备将会在30秒之后进入等待模式而不再广播, 直到enabler被设置回TRUE.
uint16 gapRole_AdvertOffTime = 0;

//各种连接参数
    uint8 enable_update_request = DEFAULT_ENABLE_UPDATE_REQUEST;
    uint16 desired_min_interval = DEFAULT_DESIRED_MIN_CONN_INTERVAL;
    uint16 desired_max_interval = DEFAULT_DESIRED_MAX_CONN_INTERVAL;
    uint16 desired_slave_latency = DEFAULT_DESIRED_SLAVE_LATENCY;
    uint16 desired_conn_timeout = DEFAULT_DESIRED_CONN_TIMEOUT;

// Set the GAP Role Parameters

//设置GAP角色参数
GAPRole_SetParameter( GAPROLE_ADVERT_ENABLED, sizeof( uint8 ), &initial_advertising_enable );
GAPRole_SetParameter( GAPROLE_ADVERT_OFF_TIME, sizeof( uint16 ), &gapRole_AdvertOffTime );

GAPRole_SetParameter( GAPROLE_SCAN_RSP_DATA, sizeof ( scanRspData ), scanRspData );
GAPRole_SetParameter( GAPROLE_ADVERT_DATA, sizeof( advertData ), advertData );

GAPRole_SetParameter( GAPROLE_PARAM_UPDATE_ENABLE, sizeof( uint8 ), &enable_update_request );
    GAPRole_SetParameter( GAPROLE_MIN_CONN_INTERVAL, sizeof( uint16 ), &desired_min_interval );
    GAPRole_SetParameter( GAPROLE_MAX_CONN_INTERVAL, sizeof( uint16 ), &desired_max_interval );
    GAPRole_SetParameter( GAPROLE_SLAVE_LATENCY, sizeof( uint16 ), &desired_slave_latency );
    GAPRole_SetParameter( GAPROLE_TIMEOUT_MULTIPLIER, sizeof( uint16 ), &desired_conn_timeout );
}

// Set the GAP Characteristics

//设置GAP特征字
GGS_SetParameter( GGS_DEVICE_NAME_ATT, GAP_DEVICE_NAME_LEN, attDeviceName );
// Set advertising interval

//设置广播间隔.
{
uint16 advInt = DEFAULT_ADVERTISING_INTERVAL;

GAP_SetParamValue( TGAP_LIM_DISC_ADV_INT_MIN, advInt );
    GAP_SetParamValue( TGAP_LIM_DISC_ADV_INT_MAX, advInt );
    GAP_SetParamValue( TGAP_GEN_DISC_ADV_INT_MIN, advInt );
    GAP_SetParamValue( TGAP_GEN_DISC_ADV_INT_MAX, advInt );
}

// Setup the GAP Bond Manager

//设置绑定管理器
{
    uint32 passkey = 0; // passkey "000000" key是6个0
    uint8 pairMode = GAPBOND_PAIRING_MODE_WAIT_FOR_REQ;
    uint8 mitm = TRUE;
    uint8 ioCap = GAPBOND_IO_CAP_DISPLAY_ONLY;
    uint8 bonding = TRUE;
    GAPBondMgr_SetParameter( GAPBOND_DEFAULT_PASSCODE, sizeof ( uint32 ), &passkey );
    GAPBondMgr_SetParameter( GAPBOND_PAIRING_MODE, sizeof ( uint8 ), &pairMode );
    GAPBondMgr_SetParameter( GAPBOND_MITM_PROTECTION, sizeof ( uint8 ), &mitm );
    GAPBondMgr_SetParameter( GAPBOND_IO_CAPABILITIES, sizeof ( uint8 ), &ioCap );
    GAPBondMgr_SetParameter( GAPBOND_BONDING_ENABLED, sizeof ( uint8 ), &bonding );
}

// Initialize GATT attributes

//初始化GATT属性
GGS_AddService( GATT_ALL_SERVICES );            // GATT所有服务
GATTServApp_AddService( GATT_ALL_SERVICES );    // GATT attributes
DevInfo_AddService();                           // Device Information Service 设备信息服务也加进去.
SimpleProfile_AddService( GATT_ALL_SERVICES ); // Simple GATT Profile 加上simple GATT 的配置信息.
#if defined FEATURE_OAD
VOID OADTarget_AddService();                    // OAD Profile
#endif

// Setup the SimpleProfile Characteristic Values

//设置特征字, 分别设置特征字的初始值跟类型.
{
    uint8 charValue1 = 1;
    uint8 charValue2 = 2;
    uint8 charValue3 = 3;
    uint8 charValue4 = 4;
    uint8 charValue5[SIMPLEPROFILE_CHAR5_LEN] = { 1, 2, 3, 4, 5 };
    uint8 charValue6[SIMPLEPROFILE_CHAR6_LEN] = { 1, 2, 3, 4, 5 };
    SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR1, sizeof ( uint8 ), &charValue1 );
    SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR2, sizeof ( uint8 ), &charValue2 );
    SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR3, sizeof ( uint8 ), &charValue3 );
    SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR4, sizeof ( uint8 ), &charValue4 );
    SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR5, SIMPLEPROFILE_CHAR5_LEN, charValue5 );
    SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR6, SIMPLEPROFILE_CHAR6_LEN, charValue6 );
}

#if defined( CC2540_MINIDK )

SK_AddService( GATT_ALL_SERVICES ); // Simple Keys Profile

// Register for all key events - This app will handle all key events
RegisterForKeys( simpleBLEPeripheral_TaskID );

// makes sure LEDs are off
HalLedSet( (HAL_LED_1 | HAL_LED_2), HAL_LED_MODE_OFF );

// For keyfob board set GPIO pins into a power-optimized state
// Note that there is still some leakage current from the buzzer,
// accelerometer, LEDs, and buttons on the PCB.

P0SEL = 0; // Configure Port 0 as GPIO
P1SEL = 0; // Configure Port 1 as GPIO
P2SEL = 0; // Configure Port 2 as GPIO

P0DIR = 0xFC; // Port 0 pins P0.0 and P0.1 as input (buttons),
// all others (P0.2-P0.7) as output
P1DIR = 0xFF; // All port 1 pins (P1.0-P1.7) as output
P2DIR = 0x1F; // All port 1 pins (P2.0-P2.4) as output

P0 = 0x03; // All pins on port 0 to low except for P0.0 and P0.1 (buttons)
P1 = 0; // All pins on port 1 to low
P2 = 0; // All pins on port 2 to low

#endif // #if defined( CC2540_MINIDK )

#if (defined HAL_LCD) && (HAL_LCD == TRUE)

#if defined FEATURE_OAD
#if defined (HAL_IMAGE_A)
HalLcdWriteStringValue( "BLE Peri-A", OAD_VER_NUM( _imgHdr.ver ), 16, HAL_LCD_LINE_1 );
#else
HalLcdWriteStringValue( "BLE Peri-B", OAD_VER_NUM( _imgHdr.ver ), 16, HAL_LCD_LINE_1 );
#endif // HAL_IMAGE_A
#else
HalLcdWriteString( "BLE Peripheral", HAL_LCD_LINE_1 );
#endif // FEATURE_OAD

#endif // (defined HAL_LCD) && (HAL_LCD == TRUE)

// Register callback with SimpleGATTprofile

//注册simpleGATTprofile的回调.
VOID SimpleProfile_RegisterAppCBs( &simpleBLEPeripheral_SimpleProfileCBs );

// Enable clock divide on halt
// This reduces active current while radio is active and CC254x MCU
// is halted

//估计是在无任务的状态下节能.
HCI_EXT_ClkDivOnHaltCmd( HCI_EXT_ENABLE_CLK_DIVIDE_ON_HALT );

#if defined ( DC_DC_P0_7 )

// Enable stack to toggle bypass control on TPS62730 (DC/DC converter)
HCI_EXT_MapPmIoPortCmd( HCI_EXT_PM_IO_PORT_P0, HCI_EXT_PM_IO_PORT_PIN7 );

#endif // defined ( DC_DC_P0_7 )

// Setup a delayed profile startup

//设置一个profile启动后的跟随的事件.
osal_set_event( simpleBLEPeripheral_TaskID, SBP_START_DEVICE_EVT );

}

/*********************************************************************
* @fn      SimpleBLEPeripheral_ProcessEvent
*
* @brief   Simple BLE Peripheral Application Task event processor. This function
*          is called to process all events for the task. Events
*          include timers, messages and any other user defined events.
*
* @param   task_id - The OSAL assigned task ID.
* @param   events - events to process. This is a bit map and can
*                   contain more than one event.
*
* @return events not processed
*/

//事件处理函数.
uint16 SimpleBLEPeripheral_ProcessEvent( uint8 task_id, uint16 events )
{

VOID task_id; // OSAL required parameter that isn't used in this function OSAL层面需要参数, 但是这个函数暂时不用.

//如果事件是系统消息.
if ( events & SYS_EVENT_MSG )
{
uint8 *pMsg;

if ( (pMsg = osal_msg_receive( simpleBLEPeripheral_TaskID )) != NULL )
{

//就运行这个消息处理的函数.
simpleBLEPeripheral_ProcessOSALMsg( (osal_event_hdr_t *)pMsg );

// Release the OSAL message
VOID osal_msg_deallocate( pMsg );
}

// return unprocessed events
return (events ^ SYS_EVENT_MSG);
}

//如果是系统启动的消息.
if ( events & SBP_START_DEVICE_EVT )
{
// Start the Device

//就启动设备
    VOID GAPRole_StartDevice( &simpleBLEPeripheral_PeripheralCBs );
    //启动绑定管理器
    // Start Bond Manager
    VOID GAPBondMgr_Register( &simpleBLEPeripheral_BondMgrCBs );
    //设置定时器
    // Set timer for first periodic event
    osal_start_timerEx( simpleBLEPeripheral_TaskID, SBP_PERIODIC_EVT, SBP_PERIODIC_EVT_PERIOD );

return ( events ^ SBP_START_DEVICE_EVT );
}

//如果事件是周期事件
if ( events & SBP_PERIODIC_EVT )
{
// Restart timer

//重启定时器.
    if ( SBP_PERIODIC_EVT_PERIOD )
    {
      osal_start_timerEx( simpleBLEPeripheral_TaskID, SBP_PERIODIC_EVT, SBP_PERIODIC_EVT_PERIOD );
    }

//执行周期应用任务.
// Perform periodic application task
performPeriodicTask();

return (events ^ SBP_PERIODIC_EVT);
}

#if defined ( PLUS_BROADCASTER )
if ( events & SBP_ADV_IN_CONNECTION_EVT )
{
    uint8 turnOnAdv = TRUE;
    // Turn on advertising while in a connection
    GAPRole_SetParameter( GAPROLE_ADVERT_ENABLED, sizeof( uint8 ), &turnOnAdv );

return (events ^ SBP_ADV_IN_CONNECTION_EVT);
}
#endif // PLUS_BROADCASTER

// Discard unknown events
return 0;
}

//task之间会传递消息, 如何处理这个消息, 就是下面的函数, 例子就是使用minidk, 按下按钮之后, 就会去开启/停止广告.

//使用的函数是: simpleBLEPeripheral_HandleKeys
/*********************************************************************
* @fn      simpleBLEPeripheral_ProcessOSALMsg
*
* @brief   Process an incoming task message.
*
* @param   pMsg - message to process
*
* @return none
*/
static void simpleBLEPeripheral_ProcessOSALMsg( osal_event_hdr_t *pMsg )
{
switch ( pMsg->event )
{
#if defined( CC2540_MINIDK )
    case KEY_CHANGE:
      simpleBLEPeripheral_HandleKeys( ((keyChange_t *)pMsg)->state, ((keyChange_t *)pMsg)->keys );
      break;
#endif // #if defined( CC2540_MINIDK )

default:
// do nothing
break;
}
}

//定义这个事件处理函数.
#if defined( CC2540_MINIDK )
/*********************************************************************
* @fn      simpleBLEPeripheral_HandleKeys
*
* @brief   Handles all key events for this device.
*
* @param   shift - true if in shift/alt.
* @param   keys - bit field for key events. Valid entries:
*                 HAL_KEY_SW_2
*                 HAL_KEY_SW_1
*
* @return none
*/
static void simpleBLEPeripheral_HandleKeys( uint8 shift, uint8 keys )
{
uint8 SK_Keys = 0;

VOID shift; // Intentionally unreferenced parameter

if ( keys & HAL_KEY_SW_1 )
{
SK_Keys |= SK_KEY_LEFT;
}

if ( keys & HAL_KEY_SW_2 )
{

SK_Keys |= SK_KEY_RIGHT;

// if device is not in a connection, pressing the right key should toggle
    // advertising on and off
    if( gapProfileState != GAPROLE_CONNECTED )
    {
      uint8 current_adv_enabled_status;
      uint8 new_adv_enabled_status;

//Find the current GAP advertisement status
GAPRole_GetParameter( GAPROLE_ADVERT_ENABLED, &current_adv_enabled_status );

if( current_adv_enabled_status == FALSE )
      {
        new_adv_enabled_status = TRUE;
      }
      else
      {
        new_adv_enabled_status = FALSE;
      }

//change the GAP advertisement status to opposite of current status
GAPRole_SetParameter( GAPROLE_ADVERT_ENABLED, sizeof( uint8 ), &new_adv_enabled_status );
}

}

// Set the value of the keys state to the Simple Keys Profile;
// This will send out a notification of the keys state if enabled
SK_SetParameter( SK_KEY_ATTR, sizeof ( uint8 ), &SK_Keys );
}
#endif // #if defined( CC2540_MINIDK )

//外设状态改变的通知回调.
/*********************************************************************
* @fn      peripheralStateNotificationCB
*
* @brief   Notification from the profile of a state change.
*
* @param   newState - new state
*
* @return none
*/
static void peripheralStateNotificationCB( gaprole_States_t newState )
{
switch ( newState )
{

//如果是启动
    case GAPROLE_STARTED:
      {
        uint8 ownAddress[B_ADDR_LEN];
        uint8 systemId[DEVINFO_SYSTEM_ID_LEN];

GAPRole_GetParameter(GAPROLE_BD_ADDR, ownAddress);

// use 6 bytes of device address for 8 bytes of system ID value
        systemId[0] = ownAddress[0];
        systemId[1] = ownAddress[1];
        systemId[2] = ownAddress[2];

// set middle bytes to zero
systemId[4] = 0x00;
systemId[3] = 0x00;

// shift three bytes up
        systemId[7] = ownAddress[5];
        systemId[6] = ownAddress[4];
        systemId[5] = ownAddress[3];

DevInfo_SetParameter(DEVINFO_SYSTEM_ID, DEVINFO_SYSTEM_ID_LEN, systemId);

#if (defined HAL_LCD) && (HAL_LCD == TRUE)
          // Display device address
          HalLcdWriteString( bdAddr2Str( ownAddress ), HAL_LCD_LINE_2 );
          HalLcdWriteString( "Initialized", HAL_LCD_LINE_3 );
        #endif // (defined HAL_LCD) && (HAL_LCD == TRUE)
      }
      break;

case GAPROLE_ADVERTISING:
      {
        #if (defined HAL_LCD) && (HAL_LCD == TRUE)
          HalLcdWriteString( "Advertising", HAL_LCD_LINE_3 );
        #endif // (defined HAL_LCD) && (HAL_LCD == TRUE)

        NPI_WriteTransport("ADVERTISING \r\n", 20);
      }
      break;

case GAPROLE_CONNECTED:
      {
        #if (defined HAL_LCD) && (HAL_LCD == TRUE)
          HalLcdWriteString( "Connected", HAL_LCD_LINE_3 );
        #endif // (defined HAL_LCD) && (HAL_LCD == TRUE)
        NPI_WriteTransport("CONNECTED \r\n", 20);
      }
      break;

case GAPROLE_WAITING:
      {
        #if (defined HAL_LCD) && (HAL_LCD == TRUE)
          HalLcdWriteString( "Disconnected", HAL_LCD_LINE_3 );
        #endif // (defined HAL_LCD) && (HAL_LCD == TRUE)
           NPI_WriteTransport("WAITING \r\n", 20);
      }
      break;

case GAPROLE_WAITING_AFTER_TIMEOUT:
      {
        #if (defined HAL_LCD) && (HAL_LCD == TRUE)
          HalLcdWriteString( "Timed Out", HAL_LCD_LINE_3 );
        #endif // (defined HAL_LCD) && (HAL_LCD == TRUE)
          NPI_WriteTransport("WAITING_AFTER_TIMEOUT \r\n", 20);
      }
      break;

case GAPROLE_ERROR:
      {
        #if (defined HAL_LCD) && (HAL_LCD == TRUE)
          HalLcdWriteString( "Error", HAL_LCD_LINE_3 );
        #endif // (defined HAL_LCD) && (HAL_LCD == TRUE)
      }
      break;

default:
      {
        #if (defined HAL_LCD) && (HAL_LCD == TRUE)
          HalLcdWriteString( "", HAL_LCD_LINE_3 );
        #endif // (defined HAL_LCD) && (HAL_LCD == TRUE)
           NPI_WriteTransport("default \r\n", 20);
      }
      break;

}

gapProfileState = newState;

#if !defined( CC2540_MINIDK )
VOID gapProfileState; // added to prevent compiler warning with
// "CC2540 Slave" configurations
#endif

}

/*********************************************************************
* @fn      performPeriodicTask
*
* @brief   Perform a periodic application task. This function gets
*          called every five seconds as a result of the SBP_PERIODIC_EVT
*          OSAL event. In this example, the value of the third
*          characteristic in the SimpleGATTProfile service is retrieved
*          from the profile, and then copied into the value of the
*          the fourth characteristic.
*
* @param   none
*
* @return none
*/
static void performPeriodicTask( void )
{
    uint8 valueToCopy;
    uint8 stat;
    uint8 char6_value[SIMPLEPROFILE_CHAR6_LEN]={0};

    SimpleProfile_GetParameter( SIMPLEPROFILE_CHAR6, char6_value);                             //读取char6的值
    SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR6, SIMPLEPROFILE_CHAR6_LEN, char6_value);      //notify char6的值给主机

    // Call to retrieve the value of the third characteristic in the profile
    stat = SimpleProfile_GetParameter( SIMPLEPROFILE_CHAR3, &valueToCopy);

    if( stat == SUCCESS )
    {
      /*
       * Call to set that value of the fourth characteristic in the profile. Note
       * that if notifications of the fourth characteristic have been enabled by
       * a GATT client device, then a notification will be sent every time this
       * function is called.
       */
      SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR4, sizeof(uint8), &valueToCopy);
    }
}

//如果主机写了特征字, 就执行这个回调.
/*********************************************************************
* @fn      simpleProfileChangeCB
*
* @brief   Callback from SimpleBLEProfile indicating a value change
*
* @param   paramID - parameter ID of the value that was changed.
*
* @return none
*/
static void simpleProfileChangeCB( uint8 paramID )
{
uint8 newValue;
//uint8 Char6_Value[SIMPLEPROFILE_CHAR6_LEN];

switch( paramID )
{
case SIMPLEPROFILE_CHAR1:
SimpleProfile_GetParameter( SIMPLEPROFILE_CHAR1, &newValue );

#if (defined HAL_LCD) && (HAL_LCD == TRUE)
        HalLcdWriteStringValue( "Char 1:", (uint16)(newValue), 10, HAL_LCD_LINE_3 );
      #endif // (defined HAL_LCD) && (HAL_LCD == TRUE)

          NPI_PrintValue("Char 1 = ",(uint16)(newValue), 16);
          NPI_PrintString("\r\n");

      break;

case SIMPLEPROFILE_CHAR3:
SimpleProfile_GetParameter( SIMPLEPROFILE_CHAR3, &newValue );

#if (defined HAL_LCD) && (HAL_LCD == TRUE)
HalLcdWriteStringValue( "Char 3:", (uint16)(newValue), 10, HAL_LCD_LINE_3 );
#endif // (defined HAL_LCD) && (HAL_LCD == TRUE)

break;

//如果是char6被改变了, 就执行coreHandler里面的ackByPackageID
    case SIMPLEPROFILE_CHAR6:
      //SimpleProfile_GetParameter( SIMPLEPROFILE_CHAR6, &Char6_Value );

      #if (defined HAL_LCD) && (HAL_LCD == TRUE)
        HalLcdWriteStringValue( "Char 6:", (uint16)(Char6_Value), 20, HAL_LCD_LINE_3 );
      #endif // (defined HAL_LCD) && (HAL_LCD == TRUE)

      //NPI_WriteTransport(Char6_Value, 20);

      ackByPackageID();

      break;

default:
// should not reach here!
break;
}
}

#if (defined HAL_LCD) && (HAL_LCD == TRUE)
/*********************************************************************
* @fn      bdAddr2Str
*
* @brief   Convert Bluetooth address to string. Only needed when
*          LCD display is used.
*
* @return none
*/
char *bdAddr2Str( uint8 *pAddr )
{
uint8       i;
char        hex[] = "0123456789ABCDEF";
static char str[B_ADDR_STR_LEN];
char        *pStr = str;

*pStr++ = '0';
*pStr++ = 'x';

// Start from end of addr
pAddr += B_ADDR_LEN;

for ( i = B_ADDR_LEN; i > 0; i-- )
{
*pStr++ = hex[*--pAddr >> 4];
*pStr++ = hex[*pAddr & 0x0F];
}

*pStr = 0;

return str;
}
#endif // (defined HAL_LCD) && (HAL_LCD == TRUE)

static void NpiSerialCallback( uint8 port, uint8 events )
{
(void)port;

if (events & (HAL_UART_RX_TIMEOUT | HAL_UART_RX_FULL))
{
uint8 numBytes = 0;

numBytes = NPI_RxBufLen();

        if(numBytes == 0)
        {
            return;
        }
        else
        {

            uint8 *buffer = osal_mem_alloc(numBytes);
            if(buffer)
            {

                NPI_ReadTransport(buffer,numBytes);

NPI_WriteTransport(buffer, numBytes);

osal_mem_free(buffer);
            }
        }
    }
}

/*********************************************************************
*********************************************************************/

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simpleBLEPeripheral.c 文件分析

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