可连接不可扫描的非定向广播（扩展广播）

# 功能简介

该示例工程的功能就是：以100ms的时间间隔，向外广播设备名为 **“红旭无线”** 的可连接不可扫描的非定向广播，并携带有47字节的自定义字符串信息：`HX_Nonscannable_connectable_ext_adv_demo`：
<img src=https://docdisk.wireless-tech.cn/img/2021/12/07/non_scannable_connectable_undirected_adv_20211207224351558151.png width = "400" height = "" alt="" align=center />

**需要注意的是：** 该类型的广播仅限于**扩展广播**，且在数据通道上通过`AUX_CONNECT_REQ`建立连接，如下图所示：
![](https://docdisk.wireless-tech.cn/img/2021/12/07/non_scannable_connectable_undirected_adv_connection_20211207225155492984.png)

## 如何使用该示例工程
将示例工程中的[non-scannable-connectable-undirected-adv](https://docdisk.wireless-tech.cn/file/2021/12/07/non-scannable-connectable-undirected-adv.zip)文件夹拷贝到您指定的任意目录下，然后直接编译下载，即可实现以100ms的时间间隔，向外广播设备名为**“红旭无线”**的不可连接可扫描的非定向广播，并携带额外的47字节自定义字符串信息。如果编译并下载成功的话，下述的log信息就会通过串口打印出来：
```c
ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd6100,len:0x18f4
load:0x403ce000,len:0xbfc
load:0x403d0000,len:0x2d84
entry 0x403ce000
I (30) boot: ESP-IDF v5.0-dev-79-gbcbef9a8db-dirty 2nd stage bootloader
I (30) boot: compile time 23:55:22
I (30) boot: chip revision: 3
I (34) qio_mode: Enabling default flash chip QIO
I (39) boot.esp32c3: SPI Speed      : 80MHz
I (44) boot.esp32c3: SPI Mode       : QIO
I (49) boot.esp32c3: SPI Flash Size : 4MB
I (53) boot: Enabling RNG early entropy source...
I (59) boot: Partition Table:
I (62) boot: ## Label            Usage          Type ST Offset   Length
I (70) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (77) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (85) boot:  2 factory          factory app      00 00 00010000 00100000
I (92) boot: End of partition table
I (96) esp_image: segment 0: paddr=00010020 vaddr=3c090020 size=1ece8h (126184) map
I (122) esp_image: segment 1: paddr=0002ed10 vaddr=3fc8d600 size=01308h (  4872) load
I (123) esp_image: segment 2: paddr=00030020 vaddr=42000020 size=86d08h (552200) map
I (206) esp_image: segment 3: paddr=000b6d30 vaddr=3fc8e908 size=010fch (  4348) load
I (207) esp_image: segment 4: paddr=000b7e34 vaddr=40380000 size=0d574h ( 54644) load
I (221) esp_image: segment 5: paddr=000c53b0 vaddr=50000000 size=00010h (    16) load
I (225) boot: Loaded app from partition at offset 0x10000
I (226) boot: Disabling RNG early entropy source...
I (243) cpu_start: Pro cpu up.
I (251) cpu_start: Pro cpu start user code
I (251) cpu_start: cpu freq: 160000000
I (251) cpu_start: Application information:
I (254) cpu_start: Project name:     hx_ble_Non-scanable-conntectabl
I (261) cpu_start: App version:      1
I (265) cpu_start: Compile time:     Dec  6 2021 23:54:35
I (272) cpu_start: ELF file SHA256:  9693f46997f80c63...
I (278) cpu_start: ESP-IDF:          v5.0-dev-79-gbcbef9a8db-dirty
I (284) heap_init: Initializing. RAM available for dynamic allocation:
I (292) heap_init: At 3FC93E90 len 0002C170 (176 KiB): DRAM
I (298) heap_init: At 3FCC0000 len 0001F060 (124 KiB): STACK/DRAM
I (305) heap_init: At 50000010 len 00001FF0 (7 KiB): RTCRAM
I (311) spi_flash: detected chip: generic
I (316) spi_flash: flash io: qio
I (320) sleep: Configure to isolate all GPIO pins in sleep state
I (326) sleep: Enable automatic switching of GPIO sleep configuration
I (333) cpu_start: Starting scheduler.
W (342) BTDM_INIT: esp_bt_controller_mem_release not implemented, return OK
I (342) BTDM_INIT: BT controller compile version [3e61eea]
I (352) coexist: coexist rom version 9387209
I (352) phy_init: phy_version 500,985899c,Apr 19 2021,16:05:08
I (472) system_api: Base MAC address is not set
I (472) system_api: read default base MAC address from EFUSE
I (472) BTDM_INIT: Bluetooth MAC: 7c:df:a1:bb:e6:61

I (502) Non-scannable-connectable undirected adv demo: register callback
I (502) Non-scannable-connectable undirected adv demo: configure adv parameters successfully
I (502) Non-scannable-connectable undirected adv demo: configure adv data successfully
I (522) Non-scannable-connectable undirected adv demo: start adverstising successfully
```
## 故障排除

1. 编译失败，则需要查看开发环境是否配置正确或者遗漏了哪个环节，详情请参考[《基于VSCODE的ESP32C3开发环境的搭建》](https://docs.wireless-tech.cn/doc/6/)；
1. 下载失败，则查看下串口号是否配置正确，串口硬件是否工作正常；如果使用的是JTAG接口，则需要查看配置和连线是否正确，更多详情请参考[《基于JTAG对ESP32-C3的调试及下载》](https://docs.wireless-tech.cn/doc/7/)；
1. 调试失败，查看配置和硬件连线是否正确，更多详情请参考[《基于JTAG对ESP32-C3的调试及下载》](https://docs.wireless-tech.cn/doc/7/)；

## 技术支持和反馈

如果上述的[故障排除](#故障排除)仍然无法解决您的问题，则通过下面的方式获取技术支持：
1. [红旭无线论坛](https://bbs.wireless-tech.cn/)，将出现问题的现象详细描述出来，并且附上截图 **(越详细越好)** ，24小时内必有答复；

如果我们的示例工程有Bug或者描述不正确的地方，欢迎指出并通知我们：

1. 邮件，<administrator@wireless-tech.cn>
1. 评论，在该文档下方发布您发现的问题