Amazon FreeRTOS
User Guide

Troubleshooting OTA Updates with the Texas Instruments CC3220SF Launchpad

The CC3220SF Launchpad platform provides a software tamper detection mechanism that uses a security-alert counter that is incremented whenever there is an integrity violation. The device is locked when the security-alert counter reaches a pre-determined threshold (the default is 15) and the host receives the asynchronous event SL_ERROR_DEVICE_LOCKED_SECURITY_ALERT. The locked device will then have limited accessibility. To recover the device, you can reprogram it or use the “restore-to-factory” process to revert to the factory image. You should program the desired behavior by updating the asynchronous event handler in “network_if.c”. For more information, see Texas Instruments SimpleLink CC3120, CC3220 Wi-Fi Internet-on-a-chip Solution Built-In Security Features Application Report.