SWRA478D February   2015  – January 2019 CC1310 , CC1312PSIP , CC1312R , CC1314R10 , CC1352P , CC1352P7 , CC1352R , CC2640 , CC2640R2F , CC2640R2F-Q1 , CC2642R , CC2642R-Q1 , CC2650 , CC2650MODA , CC2652P , CC2652R , CC2652R7 , CC2652RB , CC2652RSIP

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Acronyms
  3. 2Standby
  4. 3Understanding Bluetooth Low Energy Power Metrics
  5. 4SimpleLink Bluetooth Low Energy Wireless MCUs
  6. 5Power Measurement Setup – Preparing the DUT
    1. 5.1 Requirements
    2. 5.2 Embedded Software
    3. 5.3 Hardware
      1. 5.3.1 CC26x2R LaunchPad
    4. 5.4 BTool (Optional)
  7. 6Measuring Power Consumption With a DC Power Analyzer
    1. 6.1 Test Setup
      1. 6.1.1 Analysis Software Setup
    2. 6.2 Measurement Using Scope
    3. 6.3 Analysis
      1. 6.3.1 Advertising Event
      2. 6.3.2 Connection Event
      3. 6.3.3 Power Consumption Calculator
  8. 7EnergyTrace
    1. 7.1 Modifying the rfPacketTX Example
  9. 8References
  10. 9Revision History

1 Introduction

The first part of this application report focuses on Bluetooth Low Energy and shows how a DC Power Analyzer can be used to measure power consumption on a “Peripheral” device. The second half of this application report introduces you to the EnergyTrace technology, an energy-based code analysis tool that measures and displays the application's energy profile. EnergyTrace technology is available as part of TI's Code Composer Studio™ IDE and the required HW is available on all CC13x2/CC26x2 LaunchPad Development kits.

Power consumption measurements are presented and battery life time is calculated for an example application. An accompanying Power Calculation Tool is provided so that you can estimate your battery life based on your own custom usage scenario.

Note that the results presented in this document are intended as guidelines and measurement results presented in this application report may not be up to date with the latest software optimizations. A variety of factors will influence the battery life of a Bluetooth Low Energy product. Measurements should be performed on hardware in a controlled environment and under the target application scenario.

It is assumed the reader of this document has some knowledge of the Bluetooth Low Energy standard, as well as the Texas Instruments SimpleLink™ Bluetooth Low Energy wireless MCUs with the Software Development Kit BLE-Stack. In addition, it is assumed that the reader has some knowledge of basic electrical engineering concepts and understands how to use laboratory test equipment such as an oscilloscope and DC power supply.