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Bluetooth: Mesh Demo¶

1 功能概述¶

此sample为针对mesh组网的演示项目，可以演示测试的Mesh Feature如下

Friend-LPN
Heartbeat Publish

2 环境要求¶

board: pan108xxb5_evb * 2（A&B），pan1020 Mesh Demo板（用于测试，其他1080板入网PanMesh也可以，记为C板）
uart (option): 显示串口log
测试软件: PanMesh

3 编译和烧录¶

例程位置：zephyr\samples_panchip\bluetooth\mesh_demo

使用 ZAL 工具可以对其进行编译、烧录、打开 VS Code 调试等操作。关于 ZAL 工具的详细介绍请参考：Zephyr APP Launcher 工具介绍。

4 演示说明¶

4.1 测试Friend-LPN流程¶

运行脚本quick_build_samples\bluetooth\mesh_demo_firend.bat，编译后进行烧录至 pan108xxb5_evb A
运行脚本quick_build_samples\bluetooth\mesh_demo_low_power_node.bat，编译后进行烧录至 pan108xxb5_evb B
观察Friend-LPN建立及轮询过程
将code内的netkey&appkey提取到PanMesh（或者将PanMesh中的key更新到代码内），入网其他Mesh板，通过Mesh 网络对LPN进行开关操作，验证Friend-LPN交互流程

friend连接建立log
```
bt_mesh_friend.bt_mesh_friend_poll: Friendship established with 0x0002
```
friend开始轮询log
```
bt_mesh_friend.buf_send_end: Waiting 30000 ms for next poll
```
lpn连接已建立log
```
bt_mesh_lpn.lpn_timeout: state: established
```
lpn轮询周期log
```
bt_mesh_lpn.poll_timeout: Poll Timeout is 26790ms
```
建立连接后，通过PanMesh处理好key信息入网C板，连接C板作为proxy，通过Vendor Message界面发送给LPN一条控制消息如图

0000代表关灯，0100代表开灯

手机端配置界面¶

friend为lpn存储message log

bt_mesh_friend.friend_lpn_enqueue_rx: Queued message for LPN 0x0002, queue_size 1

30s的friend poll到达时，friend为lpn节点发送存储消息，成功开/关灯。

4.2 测试Heartbeat publish流程¶

运行脚本quick_build_samples\bluetooth\mesh_demo.bat，编译后进行烧录至 pan108xxb5_evb A
运行脚本quick_build_samples\bluetooth\mesh_demo_heartbeat_publisher.bat，编译后进行烧录至 pan108xxb5_evb B

观察打印log如下

板A：

Log打印Subscribing to heartbeat messages

不丢包情况下，每4s收取一次heartbeat publish消息

[16:51:20.480]收←◆*** Booting Zephyr OS build zephyr-v2.7.0-220-g27db6b8446e7  ***
Initializing...mesh_adhoc
board_init
Unicast address: 0x0003

[16:51:20.523]收←◆RCL_CTRL = 0x00000000

[16:51:20.648]收←◆Bluetooth initialized
gen_onoff_init
Mesh initialized
Provisioning completed
Configuring...
Configuration complete
Subscribing to heartbeat messages
[00:00:00.001,000] <wrn> bt_hci_core: Failed to set device name (-12)
[00:00:00.176,000] <inf> bt_hci_core: Identity: D4:4B:52:E4:BF:CD (random)
[00:00:00.176,000] <inf> bt_hci_core: HCI: version 5.1 (0x0a) revision 0x0003, manufacturer 0x07d1
[00:00:00.176,000] <inf> bt_hci_core: LMP: version 5.1 (0x0a) subver 0x0000
[00:00:00.177,000] <inf> bt_mesh_main: Primary Element: 0x0003
[00:00:00.177,000] <dbg> bt_mesh_main.bt_mesh_provision: net_idx 0x0000 flags 0x00 iv_index 0x0000

[16:51:28.517]收←◆heartbeat
board_heartbeat,hops = 1, feat = 1

[16:51:32.653]收←◆heartbeat
board_heartbeat,hops = 1, feat = 1

[16:51:40.930]收←◆heartbeat
board_heartbeat,hops = 1, feat = 1

[16:51:45.153]收←◆heartbeat
board_heartbeat,hops = 1, feat = 1

板B：

Log打印Publishing heartbeat messages

*** Booting Zephyr OS build zephyr-v2.7.0-220-g27db6b8446e7  ***
Initializing...mesh_adhoc
board_init
Unicast address: 0x000f
RCL_CTRL = 0x00000000
Bluetooth initialized
gen_onoff_init
Mesh initialized
Provisioning completed
Configuring...
Publishing heartbeat messages
Configuration complete
[00:00:00.001,000] <wrn> bt_hci_core: Failed to set device name (-12)
[00:00:00.175,000] <inf> bt_hci_core: Identity: FD:2D:D9:E3:14:04 (random)
[00:00:00.175,000] <inf> bt_hci_core: HCI: version 5.1 (0x0a) revision 0x0003, manufacturer 0x07d1
[00:00:00.175,000] <inf> bt_hci_core: LMP: version 5.1 (0x0a) subver 0x0000
[00:00:00.176,000] <inf> bt_mesh_main: Primary Element: 0x000f
[00:00:00.176,000] <dbg> bt_mesh_main.bt_mesh_provision: net_idx 0x0000 flags 0x00 iv_index 0x0000

5 开发说明¶

5.1 KCONFIG宏说明¶

flash相关，不需要存储flash相关功能

# CONFIG_BT_SETTINGS=y
# CONFIG_FLASH=y
# CONFIG_FLASH_PAGE_LAYOUT=y
# CONFIG_FLASH_MAP=y
# CONFIG_NVS=y
# CONFIG_SETTINGS=y
# CONFIG_BT_MESH_RPL_STORE_TIMEOUT=600

调试LOG宏，基础宏打开，由CONFIG_BT_PAN_MESH_NODE_TYPE选择friend/lpn相关打印

CONFIG_BT_DEBUG_LOG=y
CONFIG_BT_MESH_DEBUG=y

由于此demo可以展示配置不同node功能，由zephyr\samples_panchip\bluetooth\mesh_demo\proj.conj 内的宏进行修改选择,以下四个宏四选一进行编译

CONFIG_BT_PAN_MESH_NODE_TYPE_NORMAL=y
CONFIG_BT_PAN_MESH_NODE_TYPE_FRIEND=y
CONFIG_BT_PAN_MESH_NODE_TYPE_LPN=y
CONFIG_BT_PAN_MESH_NODE_TYPE_HB_PUB=y

5.2 MAIN函数说明¶

main函数包括3部分

flash相关的配置擦除, 包括函数ps_settings_init，short_time_multireset_bt_mesh_unprovisioning
bt_enable() 初始化蓝牙
bt_ready() 初始化MESH

蓝牙回调接口

static void connected(struct bt_conn *conn, uint8_t err)
{
	if (err) {
		printk("Connection failed (err 0x%02x)\n", err);
	} else {
		printk("Connected\n");
	}
}

static void disconnected(struct bt_conn *conn, uint8_t reason)
{
	printk("Disconnected (reason 0x%02x)\n", reason);
}

BT_CONN_CB_DEFINE(conn_callbacks) = {
	.connected = connected,
	.disconnected = disconnected,
};

5.3 ble_mesh说明¶

ble/mesh相关操作:

此mesh_demosample没有进行provisioner入网，通过err = bt_mesh_provision(net_key, net_idx, flags, iv_index, addr,dev_key);进行自入网，通过static void configure(void)绑定相关config信息，为了减少gatt对扫描的干扰
struct bt_mesh_model root_models[] 配置mesh model
实现heartbeat的publish绑定和onoff model的灯控演示

6 RAM/Flash资源使用情况¶

Memory region         Used Size  Region Size  %age Used
FLASH:      100868 B       256 KB     38.48%
SRAM:       31676 B        50 KB     61.87%