nrf51822 --- 1拖8实验（2）

1.目的

   学习nrf51822一个主从一体，并且连接8个从机，手机连接S130设备，控制其他8个设备。

2.分析  

   学习nrf51822主机和从机通信，

3.平台：

协议栈版本：SDK10.0.0

编译软件：keil 5.12

硬件平台：nrf51822最小系统

例子：SDK 10.0.0\examples\ble_peripheral\ble_app_uart\pca10028\s110\arm4 从机例子

          SDK10.0\examples\ble_central_and_peripheral\experimental\ble_app_hrs_rscs_relay\pca10028\s130\arm4 做主机

4步骤.

  首先把主从一体的设备里面的，hrs和rscs服务屏蔽掉。把串口服务移植进去。把ble_nus.c假如工程

 

并假如对应的路径 和 头文件

在main文件添加如下代码：

static ble_nus_t                        m_nus;                                      /**< Structure to identify the Nordic UART Service. */static uint16_t                         m_conn_handle = BLE_CONN_HANDLE_INVALID;    /**< Handle of the current connection. */

/**@snippet [Handling the data received over BLE] */static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length){//if(p_data[0] == 0x55)//{//Syn_gap_params_init();//}  uint8_t data_array;if(p_data[1]) {if(m_conn_handle_nus_c[1] != BLE_CONN_HANDLE_INVALID){data_array = 1 ;ble_nus_c_string_send(&m_ble_nus_c[1], &data_array, 1);}else{data_array = 0 ;ble_nus_c_string_send(&m_ble_nus_c[1], &data_array, 1);} }}

把原来的servce 变为如下

/**@brief Function for initializing services that will be used by the application. */static void services_init(void){    uint32_t       err_code;    ble_nus_init_t nus_init;        memset(&nus_init, 0, sizeof(nus_init));    nus_init.data_handler = nus_data_handler;        err_code = ble_nus_init(&m_nus, &nus_init);    APP_ERROR_CHECK(err_code);}

再把变为如下ble_evt_dispatch()函数功能变为如下：

static void ble_evt_dispatch(ble_evt_t * p_ble_evt){    uint16_t conn_handle;    uint16_t role;    /** The Connection state module has to be fed BLE events in order to function correctly     * Remember to call ble_conn_state_on_ble_evt before calling any ble_conns_state_* functions. */    ble_conn_state_on_ble_evt(p_ble_evt);    pm_ble_evt_handler(p_ble_evt);    // The connection handle should really be retrievable for any event type.    conn_handle = p_ble_evt->evt.gap_evt.conn_handle;    role        = ble_conn_state_role(conn_handle);    // Based on the role this device plays in the connection, dispatch to the right applications.    if (role == BLE_GAP_ROLE_PERIPH)    {        // Manages peripheral LEDs.        on_ble_peripheral_evt(p_ble_evt);        ble_advertising_on_ble_evt(p_ble_evt);        ble_conn_params_on_ble_evt(p_ble_evt);        // Dispatch to peripheral applications.  ble_nus_on_ble_evt (&m_nus, p_ble_evt);//        ble_hrs_on_ble_evt (&m_hrs, p_ble_evt);//        ble_rscs_on_ble_evt(&m_rscs, p_ble_evt);    }    else if ((role == BLE_GAP_ROLE_CENTRAL) || (p_ble_evt->header.evt_id == BLE_GAP_EVT_ADV_REPORT))    {        /** on_ble_central_evt will update the connection handles, so we want to execute it         * after dispatching to the central applications upon disconnection. */        if (p_ble_evt->header.evt_id != BLE_GAP_EVT_DISCONNECTED)        {            on_ble_central_evt(p_ble_evt);        }//        if (conn_handle == m_conn_handle_hrs_c)//        {//            ble_hrs_c_on_ble_evt(&m_ble_hrs_c, p_ble_evt);//            ble_db_discovery_on_ble_evt(&m_ble_db_discovery_hrs, p_ble_evt);//        }//        else if (conn_handle == m_conn_handle_rscs_c)//        {//            ble_rscs_c_on_ble_evt(&m_ble_rsc_c, p_ble_evt);//            ble_db_discovery_on_ble_evt(&m_ble_db_discovery_rsc, p_ble_evt);//        }for(uint8_t i = 0;i<8;i++){ if (conn_handle == m_conn_handle_nus_c[i])           {            ble_nus_c_on_ble_evt(&m_ble_nus_c[i], p_ble_evt);            ble_db_discovery_on_ble_evt(&m_ble_db_discovery_nus[i], p_ble_evt);          }}        // If the peer disconnected, we update the connection handles last.        if (p_ble_evt->header.evt_id == BLE_GAP_EVT_DISCONNECTED)        {            on_ble_central_evt(p_ble_evt);        }    }}

OK，到这里把串口服务移植到了进去 把hrs和rscs给移掉了 。。。。。

用lightblue 连接，现在显示的是串口的服务了。。。。