CC3200 TI RTOS LPDS模式

如何让CC3200正确进入LPDS模式：

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.

至于在代码里如何实现LPDS，你可以参考如下链接，但是是基于TI-RTOS的。

https://e2e.ti.com/support/embedded/tirtos/f/355/p/574775/2119936#pi317008filter=all&pi317008scroll=false

idle_profile例程是使用了RTOS的，如果你要改为nonos模式，可以参考如下步骤：

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.

对于CC3200，其包括两种LPDS模式，即MCU LPDS+NWP Idle Connected以及MCU LPDS + NWP LPDS模式；

1.MCU LPDS+NWP Idle Connected

这种模式下，电流消耗为0.695mA，该模式下APPs-MCU处于LowPowerDeepSleep模式下，而设备仍然连接着AP。此时唤醒源可以为waketimer，GPIO和network activity。

2. MCU LPDS + NWP LPDS

这种模式下，电流消耗为0.25mA，该模式下 APPs MCU enters LPDS and the networking engine is not started (NWP LPDS is the default).

LPDS模式下有6个GPIO可以唤醒：

Low Power Deep Sleep(LPDS)
RAM retention – RAM is retained by default, but the application user can decide whether and which blocks to retain when the MCU enter LPDS.
CPU context retention – No (if required, context need to be saved and restored in SW)
Peripheral context retention – No (Peripherals need to be reconfigured after exiting from LPDS)
Wake source – GPIO (2,4,11,13,17,24 – only one), LPDS Wake timer and Network wakeup

参考：C:\ti\CC3200SDK_1.3.0\cc3200-sdk\docs目录下CC3200-Power_Management_Framework.pdf

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