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In Non-OS mode, the call to cc_idle_task_pm should be made directly to get into the LPDS mode (after initialization and setting wake up source). In OS mode, the idle hook of the OS would invoke cc_idle_task_pm, to enter into LPDS.
1. You will be able to reuse the PM framework files (cc3200-sdk\middleware\framework\pm) and also the supporting reference implementation for the platform (cc3200-sdk\middleware\soc).
2. The drivers use the OS services but not the HAL. So you will need to make a choice here. Anyways you will need to do a reinitialzation of the hardware in the lp3p0_restore_soc_data function.
3. You may be able to reuse the cc3200-sdk\example\idle_profile\lp3p0_plat_ops.c.
4. The file cc3200-sdk\example\idle_profile\lp3p0_board.c will need modifications to not register the drivers.
This is just a direction. Please try to follow the idle_profile working to make more informed changes.
With this as reference, you may also try to rewrite the LPDS entry-exit sequence.
