[FAQ] CC1352P: TI 15.4 Stack-Power Measurement

Power measurement & estimation for TI15.4 stack

In order to estimate the power consumption of your device Texas Instruments provides the TI-15.4-Stack Battery Life Calculator, which also provides an easy way to optimize the battery lifetime of your device.

After doing the optimizing one can also measure the power consumption with our out of the box examples and the Energy Trace- feature we provide with our Launchpads, to get a rough overview on the power consumption of your device, at the beginning of your development process.

To use our out of the box example for power measurement there are few steps to do:

• Get the sensor and collector example running on your Launchpads as described in the Simple-Link academy
• Open Terminal program to see whether network is formed and sensor data is updated within your expected interval on the collectors’ GUI display
• Disable the Common User Interface by defining: #define CUI_DISABLE within the c or as predefined symbol within the sensor project properties:
  • Alt+Enter  -- Build-- Arm Compiler--predefined Symbols

This disables the UART, which is used to display the connectivity information. Disabling this interface reduces the power consumption as it avoids the device to enter Standby () mode.

• Build Sensor project and flash it to your Launchpad
• Remove the USB-cable
• Remove all Jumpers (including LED-jumpers) except (XDS110 Power, 3V3 and RXD(UART) as described in chapter 7 of our Application Note: Measuring CC13xx and CC26xx current consumption (Rev. D).

The jumper settings are shown in the picture below:

• Connect the USB-cable
• Use the Serial terminal with your Collector to ensure connection is available
• Start the EnergyTrace by clicking on the EnergyTrace symbol

Some measurements we did are shown in the he table below:

Frequency: 868 MHz, 0db TX-power, 50kbps/2-GFS

These measurements can give a valuable indication on the power consumption of our Sensor/Collector example.