The software engineering for both CC1310 and CC1311 relies on the TI-RTOS real-time operating system. The TI-RTOS version has been upgraded since CC1311 SDK 5.30 version. Currently, TI-RTOS 7 is used on CC1311 and the original TI-RTOS on CC1310., without a version number.

Compared to TI-RTOS, TI-RTOS 7 introduces the following key upgrades:

• TI-RTOS 7 generates the configuration code through SysConfig
• TI-RTOS 7 improves compilation speed by removing its dependency on the XDSTools tool for compilation
• TI-RTOS 7 consumes less flash and RAM
• TI-RTOS 7 enhances the debug experience by directly entering kernel functions for single-step debugging

More detailed updates can be found at the following links:

[FAQ] Why use TI-RTOS7? - Sub-1 GHz forum - Sub-1 GHz - TI E2E support forums

The biggest difference for users upgrading from CC1310 is that the related configuration of TI-RTOS 7 is generated by SysConfig, replacing the previous cfg configuration file. SysConfig is covered already in section 2.2.1. Detailed TI-RTOS migration steps are also available in the CC1311 SDK:

TI-RTOS to TI-RTOS7 Migration

In addition to this, some RTOS-related APIs have changed in the routine. The CC1311 adds a layer of DPL (Driver Porting Layer) for compatibility with different RTOS operating systems and uses the DPL API in routines instead of the original TI-RTOS API. Thus, you should be aware of the following API changes when porting:

• The Clock Module API, including the Clock_Struct structure and Clock_getTicks() etc., should be replaced with ClockP_Struct and ClockP_getTicks();
• The API in util_timer.c, such as Timer_start(), Timer_stop(), and so on, should be replaced with UtilTimer_start(), UtilTimer_stop(), and so on.

For a detailed description of the DPL API, refer to the Driver Porting Layer section of SimpleLink MCU SDK Driver API Reference document.