USER_ADVERTISE_DATA

嗨Ruchi Patel.

请查看SDK的ble\u app\u barebone示例，它演示了用户广告数据的动态变化。是的，您可以用不同的有效负载发送1个以上的广告包。ble\u app\u barebone示例也演示了该功能。广告字符串应该有一个特定的格式，如。您发布的代码块具有这种格式，因此可以这样做。广告包传输速率可以在的用户无向广告配置结构中定制
用户配置.h文件。广告分组在特定的广告间隔中传输，该广告间隔可以在该结构中改变

谢谢pm_dialog.

你好，鲁奇·帕特尔，

您可以通过更改user\u adv\u conf结构（在user\u config.h中定义）的.intv\u min或.intv\u max成员来配置播发数据包传输速率。这样，您就可以定义播发的最小和最大间隔。关于广告数据，您不仅可以修改生产广告数据。您还可以修改超过1字节的广告数据。SDK的ble\u app\u barebone示例动态更改广告字符串的适当性数据。在特定示例中，property数据的长度为2字节，但其长度可以更改。在广告字符串中，您可以附加特定的数据并从应用程序中更新它们。广告消息在app\u easy\u gap\u undirected\u advertise\u start\u create\u msg（）函数中创建，然后在调用app\u easy\u gap\u undirected\u advertise\u get\u active（）函数时保存在cmd结构中。cmd指针将有一个完整的消息，您可以将它发送到堆栈，其中包括一些默认的adv数据，这些数据取自用户的adv数据，因此您可以做的是，在app\u easy\u gap\u undirected\u ADVERTISE\u get\u active（）返回后，以cmd指针中保存广告数据的数组为目标（cmd->info.host.adv\u数据)你想怎么换就怎么换–您的数据必须符合BLE规范。

谢谢pm_dialog.

你好，鲁奇·帕特尔，

关于NMI_handler是独立于你dual-role application. The NMI_handler will be issued due to the WatchDog timer. Please check where the Watchdog hits into your application. Regarding the switching between broadcasting and observer mode, you shouldn’t do any additional changes. In the case of the broadcasting are you advertising as a non-connectable device? If not, you can use the app_easy_gap_non_connectable_advertise_start API to create the advertising message for non-connectable advertising. Also, I suggest you to use the .app_on_adv_nonconn_complete callback function when the advertising is done since this callback is triggered when advertising as a non-connectable device.

谢谢pm_dialog.

嗨，鲁奇·帕特，

The #define “USER_ADVERTISE_DATA” is appended into the .NVDS_TAG_APP_BLE_ADV_DATA item of nvds_data_storage structure as you said in your post. You can define more than one USER_ADVERTISE_DATA, but only one of that can be appended in that structure due to the unique .NVDS_TAG_APP_BLE_ADV_DATA item. If you want to have more than one advertising data, you are able to do it but with a different way. I suggest you to define the USER_ADVERTISE_DATA as empty, and then append your different advertising data dynamically. When the device starts advertising, the user_app_adv_start() is executed and then the cmd is created by app_easy_gap_undirected_advertise_get_active(). The app_easy_gap_undirected_advertise_get_active() function returns the app_easy_gap_undirected_advertise_start_create_msg() function which creates the advertising message for a connectable undirected event. The advertising message includes the user advertising configurations, the advertising data and other data. The app_easy_gap_adv_read_from_NVDS() function reads USER_ADVERTISE_DATA from the nvds_data_storage structure, so if you have empty the USER_ADVERTISE_DATA define, your advertising data will be empty. By this way, you are able to append your different advertising data depending on your application dynamically by using app_add_ad_struct() in the user_app_adv_start() function.

关于制造商数据，当设备处于Observer模式时，.app_on_adv_report_ind Ind Callback函数（在user_callback_config.h文件中）将执行，因此它不应该为null，您应该定义要触发的函数。收到GAPM_ADV_REPORT_IND时，将执行GAPM_ADV_REPORT_IND_HANDLER（）执行.app_on_adv_report_ind IND回调。此处理程序具有输入参数The GapM_Adv_Report_ind结构，包括Adv_report结构。制造商数据应该是ADV_REPORT调节的数据[ADV_DATA_LEN]项。那么你如何检查没有收到制造商数据，并且所有其他数据都正确收到？

谢谢pm_dialog.

你好，鲁奇·帕特尔，

Depending how you are using the SDK and which example you are using be aware that the SDK will append any extra data that don’t fit in the advertising string in the scan response data, so make sure that the data that you are interested in is in the advertising string and not the scan response data. In the first indication (advertising indication) the advertising data will populate the data member of the adv_report struct, and then in the second indication (scan response indication) the scan response data will populate the struct. In order to catch the scan response data, you should configure your device as GAPM_SCAN_ACTIVE to get a scan response. If you configure your device as GAPM_SCAN_PASSIVE, the observer only receives advertising data and doesn’t send a scan request to receive a scan response, so you will not able to read your scan response data. I’ve also tested this using an observer and the ble_app_barebone, I was able to get the increment in the advertising string or in the scan response data.

谢谢pm_dialog.

你好，鲁奇·帕特尔，

正如我在上一篇文章中所指出的那样，您无法定义多个user_advertise_data，因为#define“user_advertise_data”将附加到.nvds_tag_app_ble_add_data项的nvds_data_storage结构。广告字符串具有31个字节长度，但它们的3个字节是从堆栈中保留的，广告过滤策略和广告数据长度，因此您可以使用最多28bytes。附加到广告字符串中的数据将由USER_APP_ADV_START填充，其中我在上一个帖子中已提及的过程。如果要将自定义数据添加到广告字符串中，则应将它们复制到CMD的正确数组中，该数组是user_app_adv_start（）函数。cmd由app_easy_gap_undircted_advertise_get_active（）创建。在您的应用程序中，您可以将user_advertise_data为空，并将数据复制到广告字符串中。自定义数据应该有效，并且应遵循user_advertise_data的结构，以便正确启动广告。您应该将2字节与长度和标志一起放入数据中，因此最终您能够将高达26字节追加到广告字符串中。在以下代码中，我会向您展示您如何做到这一点。

void user_app_adv_start(void)
{

uint8\u t advdata[28]={0x1B，0xFF，0x31，0x32，0x33，0x34，0x35，0x36，0x37，0x38，0x39，0x31，0x32，0x33，0x34，0x35，0x36，0x37，0x38，0x39，0x31，0x32，0x33，0x34，0x35，0x36，0x37，0x38}；

//安排下一次广告数据更新
app_add_data_update_timer_used = app_easy_timer（app_add_data_update_to，avd_data_update_timer_cb）;

struct gapm_start_advertise_cmd* cmd;
cmd = app_easy_gap_undirected_advertise_get_active();

memcpy(cmd->info.host.adv_data, advdata , 28);

//动态添加特定于制造商的数据
//mnf_data_update();
app_add_ad_struct（cmd，&mnf_data，sizeof（struct mnf_specific_data_ad_structure））；

app_easy_gap_undircated_advertise_start（）;
}

如果将26字节的数据添加到播发字符串中，并希望填充其他数据，则可以将它们附加到扫描响应数据中，但在另一侧，观察者应配置为GAPM\u scan\u ACTIVE，以便发送扫描请求。

谢谢pm_dialog.