如何测量BLE的功耗(点击率最高的应用报告之一)

Measuring Bluetooth® Low Energy Power Consumption
By Sandeep Kamath & Joakim Lindh

Table of Contents

KEYWORDS .............................................................................................................................. 1
1 INTRODUCTION ............................................................................................................. 1
2 ABBREVIATIONS ........................................................................................................... 2
3 UNDERSTANDING POWER METRICS IN BLUETOOTH LOW ENERGY ................... 3
4 TEST SETUP .................................................................................................................. 4
4.1 SYSTEM OVERVIEW.................................................................................................... 4
4.2 HARDWARE MODIFICATIONS ....................................................................................... 5
4.3 EMBEDDED SOFTWARE MODIFICATIONS ...................................................................... 6
4.3.1 Remove Periodic Event ..................................................................................................... 6
4.3.2 Configure General-Purpose Input / Output (GPIO) Pins ................................................. 6
4.4 CENTRAL DEVICE AND BTOOL SETUP ......................................................................... 7
5 MEASUREMENT AND ANALYSIS ................................................................................ 8
5.1 CAPTURING A WAVEFORM DURING A CONNECTION EVENT ........................................... 8
5.2 DETERMINING VARIANCE IN THE LENGTH OF CONNECTION EVENTS ............................ 12
5.3 PERFORMING MEASUREMENTS FOR CONNECTION EVENTS ........................................ 12
5.4 PERFORMING MEASUREMENTS OF SLEEP CURRENT .................................................. 14
5.5 FORMULAS AND CALCULATIONS ................................................................................ 17
5.6 USING EXCEL SPREADSHEET FOR CALCULATIONS ..................................................... 18
GENERAL INFORMATION ..................................................................................................... 23
5.7 DOCUMENT HISTORY ............................................................................................... 23

谢谢分享！

多谢分享！

最近有个项目用CC2541，刚好需要测功耗，谢谢分享。

Hi Susan

    TI之前说要推出一款Cortex内核的BLE芯片，有消息了吗？期待啊！

Shaokai,

就快了。

现在你可以联系你的代理，签好NDA就可以拿到资料先行开发了。

Hi AZ

    现在还没确定要使用，得先评估呢。

    可否透露一下芯片的型号？.

TX/RX 功耗能到5mA以下吗？

感谢分享，有中文版的就更好了

为什么测量的时候要关闭定时器？

为什么测量的时候要关闭定时器？

正要用呢，谢谢分享。。。

 Hi Shaokai,

         TI新一代BLE,产品2月底正式release了，CC2640产品主页如下：

http://www.ti.com/product/cc2640 

最新测量CC2650的功耗报告已经Ready了。http://www.ti.com/product/CC2640/technicaldocuments

swra478 Measuring Bluetooth Smart Power Consumption

这个图 是不是connected和advertising位置反了