This application note describes the setup and procedures to measure power consumption on a CC2541 device operating as a GAP Peripheral in a BLE connection.
This document provides a guide for measuring power consumption and estimating battery life for devices running the Bluetooth Low Energy (BLE) stack on the Texas Instruments CC2541 microcontroller. It details the necessary hardware modifications, such as adding a shunt resistor and removing specific capacitors, to ensure accurate current measurements using an oscilloscope. The guide also outlines required software modifications to the SimpleBLEPeripheral project to minimize unnecessary power draw during testing.
You must solder a wire to ground at pin 1 of the DEBUG connector, solder a 10 Ω resistor in line with VDD, and remove the 47uF capacitor (C7) from the board.
You must comment out the line of source code that starts the periodic event timer in the SimpleBLEPeripheral_ProcessEvent function.
The recommended heat source temperature for removing the chip is 290 °C.