Table of Contents

Example Summary

This example introduce the user to Trigger Mode on CC32xx devices.

Overview

• This example is based on the Provisioning example provided by the CC32xx SDK.

• The purpose of this example is to show the user a method, in which the device can enter LPDS, and be awoken by a packet sent on a specific, pre-determined socket.

Peripherals Exercised

• Board_LED0 - Blinking led Indicates disconnected. Led on indicates connection established
• Board_LED1 - Led on indicates error occurred
• Board_LED2 - Led on indicates error occurred and while blinking, indicates that the board is trying to connect to AP.

Example Usage

• Establish connection between CC32xx device to a specific AP using the Android \ IOS mobile application

• Build the project and flash from the debugger or by using the SimpleLink Uniflash

• Open a serial session (e.g. HyperTerminal,puTTY, etc.) to the appropriate COM port.

  The COM port can be determined via Device Manager in Windows or via ls /dev/tty* in Linux

The connection should have the following settings

    Baud-rate:    115200
    Data bits:       8
    Stop bits:       1
    Parity:       None
    Flow Control: None

• The example starts by showing on the terminal the application name and tries to establish connection with existing profiles

• If a connection is not established during preconfigured time out, provisioning will start, wait for connection to be established and for an IP to be aquired

• After connection is established, Ping is sent once to the gateway specified by the Provisioning stage to verify connection

Once the connection is verified, we can start testing the Trigger Mode functionality

For example: in order to see how the feature works, the user can:

• Ask the Access point to open a TCP connection to the SimpleLink device
• After the TCP connection is established the device will simply enter LPDS mode (NWP is still awake) until new packets are received (e.g each 5 seconds, NWP as wakeup source)
  
• Send X packets each Y seconds to the SimpleLink device from the Access Point
• During the interval, the application processor will sleep and save power

These procedures can be done using iperf or a dedicated script

Application Design Details

• The application is based on the Provisioning application, and as such requires exactly the same from the user.

• The application is designed to enter LPDS once a TCP connection is established, and be awoken when a packet is received (on the TCP port).

Please install the latest CC32xx Service Pack in order to get the most optimization and lowest current consumption.

References

• For more detailed information please refer to the programmer’s user guide and review the Trigger Mode feature (6.7.2)
• For more detailed information please refer to the programmer’s user guide and review the Provisioning chapter 15.
• For more detailed information regarding the provisioning feature, please refer to the provisioning application report
• For further information please refer to the user programmers guide: CC3X20 Programmer’s Guide