# 请问AB BLE Gateway V4 需要如何设置才能发送TLM帧？

**URL:** <https://bbs.aprbrother.com/t/ab-ble-gateway-v4-tlm/1518>\
**Category:** BLE Gateway\
**Created:** [June 14, 2019, 2:40am UTC](https://bbs.aprbrother.com/t/ab-ble-gateway-v4-tlm/1518 "2019-06-14T02:40:42Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![laokamo](https://bbs.aprbrother.com/letter_avatar_proxy/v4/letter/l/bbce88/32.png) [@laokamo](https://bbs.aprbrother.com/u/laokamo)\
**Post date:** [June 14, 2019, 2:40am UTC](https://bbs.aprbrother.com/t/ab-ble-gateway-v4-tlm/1518/1 "2019-06-14T02:40:42Z")

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#### 配置如下

![image](https://bbs1.aprbrother.com/uploads/default/original/1X/dbbc7a94e77e77b8a6e401938eb0dbf4cd35403a.png)

我的需求是获取信标的电量数据

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<div class="post-metadata">

**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\
**Post date:** [June 14, 2019, 2:50am UTC](https://bbs.aprbrother.com/t/ab-ble-gateway-v4-tlm/1518/2 "2019-06-14T02:50:32Z")

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Gateway现在不支持只发送TLM帧，你可以为`Allow All Advertising Data`，并在服务器端自己解析过滤TLM帧数据。TLM帧的数据特征很明显，应该比较容易做到

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<div class="post-metadata">

**Author:** ![laokamo](https://bbs.aprbrother.com/letter_avatar_proxy/v4/letter/l/bbce88/32.png) [@laokamo](https://bbs.aprbrother.com/u/laokamo)\
**Post date:** [June 14, 2019, 2:56am UTC](https://bbs.aprbrother.com/t/ab-ble-gateway-v4-tlm/1518/3 "2019-06-14T02:56:53Z")

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请问一下 可以详细的提供TLM帧数据特征吗？是包含在解包数据里吗？  
以下格式中？

- v - firmware version
- mid - message ID
- time - 启动时长，以秒计算
- ip - gateway的IP
- mac - gateway的mac address
- devices - 一个由BLE广播包组成的数组, 这些广播包都是gateway收集到的

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<div class="post-metadata">

**Author:** ![aprilpea](https://bbs.aprbrother.com/user_avatar/bbs.aprbrother.com/aprilpea/32/9_2.png) [@aprilpea](https://bbs.aprbrother.com/u/aprilpea)\
**Post date:** [June 14, 2019, 3:02am UTC](https://bbs.aprbrother.com/t/ab-ble-gateway-v4-tlm/1518/4 "2019-06-14T03:02:53Z")

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你可以在`devices`数组里获得网关收集到的广播数据，然后进一步分析其中是不是包含TLM广播

- 这里是[TLM的广播数据的前缀部分](https://github.com/google/eddystone/blob/master/protocol-specification.md)，其中`byte offset 7`的length=0x11
- 这里是[TLM广播内容的后半部分](https://github.com/google/eddystone/blob/master/eddystone-tlm/tlm-plain.md)
- TLM广播的长度是固定的，前缀也是固定的，因此你可以以广播长度和前缀为特征值进行过滤

希望以上内容有帮助

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<div class="post-metadata">

**Author:** ![laokamo](https://bbs.aprbrother.com/letter_avatar_proxy/v4/letter/l/bbce88/32.png) [@laokamo](https://bbs.aprbrother.com/u/laokamo)\
**Post date:** [June 14, 2019, 6:52am UTC](https://bbs.aprbrother.com/t/ab-ble-gateway-v4-tlm/1518/5 "2019-06-14T06:52:06Z")

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![image](https://bbs1.aprbrother.com/uploads/default/original/1X/6dfc22cafbc838f4b500a73a679cfe467cba91be.png)

 ![image](https://bbs1.aprbrother.com/uploads/default/original/1X/7151fc5ac8e3f83c94a13016b33752b9aa11f6bf.png)

你好 请问一下 按照[TLM的广播数据的前缀部分](https://github.com/google/eddystone/blob/master/protocol-specification.md)，其中 `byte offset 7` 的length=0x11 这个方法来找 没找到TLM类型的数据 不知道是不是我方法不正确 日志采集了2分钟 应该包含TLM的数据吧