CH579 CH573 CH582 BLE HID例子开启密码输入（passkey）

// Default MITM mode (TRUE to require passcode or OOB when pairing)  设置开启
#define DEFAULT_MITM_MODE                     TRUE

// Default bonding mode, TRUE to bond
#define DEFAULT_BONDING_MODE                  TRUE

// Default GAP bonding I/O capabilities  启动键盘输入密码功能
#define DEFAULT_IO_CAPABILITIES               GAPBOND_IO_CAP_KEYBOARD_ONLY

  // Setup the GAP Bond Manager  作用代码
  {
    uint32 passkey = DEFAULT_PASSCODE;
    uint8 pairMode = DEFAULT_PAIRING_MODE;
    uint8 mitm = DEFAULT_MITM_MODE;
    uint8 ioCap = DEFAULT_IO_CAPABILITIES;
    uint8 bonding = DEFAULT_BONDING_MODE;
    GAPBondMgr_SetParameter( GAPBOND_PERI_DEFAULT_PASSCODE, sizeof( uint32 ), &passkey );
    GAPBondMgr_SetParameter( GAPBOND_PERI_PAIRING_MODE, sizeof( uint8 ), &pairMode );
    GAPBondMgr_SetParameter( GAPBOND_PERI_MITM_PROTECTION, sizeof( uint8 ), &mitm );
    GAPBondMgr_SetParameter( GAPBOND_PERI_IO_CAPABILITIES, sizeof( uint8 ), &ioCap );
    GAPBondMgr_SetParameter( GAPBOND_PERI_BONDING_ENABLED, sizeof( uint8 ), &bonding );
  }

设备被连接后，进入该回调函数，启动密码输入任务，等待输入密码

/*********************************************************************
 * @fn      hidDevPasscodeCB
 *
 * @brief   Passcode callback.
 *
 * @param   deviceAddr - address of device to pair with, and could be either public or random.
 * @param   connectionHandle - connection handle
 * @param   uiInputs - pairing User Interface Inputs - Ask user to input passcode
 * @param   uiOutputs - pairing User Interface Outputs - Display passcode
 *
 * @return  none
 */
static void hidDevPasscodeCB( uint8 *deviceAddr, uint16 connectionHandle,
                                        uint8 uiInputs, uint8 uiOutputs )
{
  uint32 passkey =0;
  if ( pHidDevCB && pHidDevCB->passcodeCB )
  {
    // execute HID app passcode callback
    (*pHidDevCB->passcodeCB)( deviceAddr, connectionHandle, uiInputs, uiOutputs );
  }
  else
  {
    GAPBondMgr_GetParameter( GAPBOND_PERI_DEFAULT_PASSCODE, &passkey );
    tmos_start_task(hidEmuTaskId,PASSKEY_EVT,400); //启动输入密码的任务
//      GAPBondMgr_PasscodeRsp( connectionHandle, SUCCESS, passkey );
    }
    // Send passcode response

}

密码是在串口中断里面接收的（当然这个只是操作例子，不限制输入方式）
 if ( events & PASSKEY_EVT )
  {
    uint32 passkey =0;
    uint8 i;
    if((Rcvlen==8))
    {
      for(i=2;i<8;i++)  //密码是10进制数输入，需要进制进制转换
      {
        passkey=10*passkey;
        passkey+=(RxBuff[i]-0x30);
        PRINT("  %d",RxBuff[i]);
      }
      PRINT("  %d",passkey);
      Rcvlen =0;
      GAPBondMgr_PasscodeRsp( hidEmuConnHandle, SUCCESS, passkey ); //输入密码
    }
    else {
      tmos_start_task(hidEmuTaskId,PASSKEY_EVT,400);//如果没有接收到密码，重新开启任务
    }

    return ( events ^ PASSKEY_EVT );
  }