TLSR8258方案开发之BLE协议接口代码解析

一 前言

  这里的代码是在原厂基础上修改了不少。虽然代码复杂了不少，但是逻辑也清晰了不少。

二  广播协议

  想要熟悉并修改ble的广播协议和内容，请查阅结构体：

static const attribute_t my_Attributes[] 

 比如，假如要上报电压值，可以在里面添加

        {0,ATT_PERMISSIONS_READ,2,sizeof(my_batCharVal),(u8*)(&my_characterUUID), (u8*)(my_batCharVal), 0},                //prop

   该广播信息的填写如下所示：

 

//// Battery attribute values
static const u8 my_batCharVal[5] = {
    CHAR_PROP_READ | CHAR_PROP_NOTIFY,
    U16_LO(BATT_LEVEL_INPUT_DP_H), U16_HI(BATT_LEVEL_INPUT_DP_H),
    U16_LO(CHARACTERISTIC_UUID_BATTERY_LEVEL), U16_HI(CHARACTERISTIC_UUID_BATTERY_LEVEL)
};

三 连接和断开

  连接成功的接口如下所示:

    case APP_BLE_EVENT_CONNECTED:
        b_ble_connected = ON;
        LOG_INFO("Connected!!! ble_state:%d ",b_ble_connected);
        LOG_INFO("e: %d p:%d n: %d", param->e, param->p, param->n);

  断开的接口如下所示：

    case APP_BLE_EVENT_DISCONNECTED:
        b_ble_connected = OFF;
        b_rx_notify_enable = OFF;

        LOG_INFO("DisConnected Reason: 0x%02x ble_state:%d ", param->p,b_ble_connected);
        att_mtu_size = DEFAULT_ATT_MTU_SIZE;

四 数据收发

     数据接收的接口函数：

static int parse_xp_message(XpMessage* message, uint8_t* data, uint16_t len)
{
    uint8_t* p = NULL;
    p = data;
    
    set_xp_header(message, data, &p);
    LOG_DEBUG("%s Info: ble received data:", __func__);

  数据发送的接口函数：

    app_ble_send_data_by_notification(buff, length);

五 软硬件链接：

1 泰凌微TLSR8258 BLE5.0物联网IOT评估开发板产品级源码开放-淘宝网 (taobao.com)