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

如何测量BLE的功耗.pdf

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