SPRUI18C—June 2016 Power Manager API 9
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www.ti.com Power Manager API
1.3.2 Runtime Configuration
For each target, one of the configuration elements of the Power configuration structure (that is,
PowerCC3200_ConfigV1, PowerCC26XX_Config, or PowerMSP432V1_Config) is the "enablePolicy"
flag. This Boolean determines whether the configured Power policy function is called on each pass
through the Idle loop. This flag is typically set to "false" in the TI-RTOS examples. This allows the
application to be initially run in a debugger without possible side-effects due to transitions into a low-
power state. This is especially critical for CC3200 devices, because sleep transitions usually cause a
debugger detach.
The Power_enablePolicy() API allows the application to explicitly enable the policy at runtime, overriding
the setting in the static configuration structure. This allows a common board file to be used for several
applications, because individual applications can individually enable the Power policy when appropriate.
The Power_disablePolicy() API allows the application to explicitly disable the policy at runtime.
1.3.3 Include Files
To use the Power API, the application should include both the
Power.h
header file and the appropriate
device-specific Power header file. It can then call Power_enablePolicy() in main() or somewhere else in
the program. For example, use these statements for CC13xx/CC26xx:
#include <ti/drivers/Power.h>
#include <ti/drivers/power/PowerCC26XX.h>
...
Power_enablePolicy();
The device-specific header file should be included as shown above, because applications typically use
device-specific resource IDs, events, and sleep states.
1.3.4 API Functions
For API details, see the Doxygen-generated documentation. In the top-level installation directory for TI-
RTOS, open the Release Notes and follow the links to Documentation and then Documentation
Overview. In the Documentation Overview, open the TI-RTOS Drivers Runtime APIs (doxygen) link.
Select the Power.h link in the "Driver Interfaces" column, along with the device-family specific
implementation, for example
PowerCC3200.h
.
Note: If your code was developed using a version prior to TI-RTOS 2.15 for CC26xx, note that
some changes have been made to the Power APIs. See the TI-RTOS Migration 2.15
wiki page for details.
The following are the Power manager APIs.
•
Power_enablePolicy() enables the configured power policy function to run on each pass through
the OS Idle loop. See Section 1.3.2 and Section 3.2.
•
Power_disablePolicy() disables the configured power policy function at runtime.
•
Power_setPolicy() chooses a different power policy at runtime.
•
Power_getConstraintMask() gets a bitmask that identifies the current set of declared constraints.
See Section 3.4 and Section 4.2.3.
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