194 lines
6.3 KiB
C
194 lines
6.3 KiB
C
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/**************************************************************************************************
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Filename: OSAL_pwrmgr.c
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Revised: $Date: 2008-10-07 14:47:15 -0700 (Tue, 07 Oct 2008) $
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Revision: $Revision: 18212 $
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Description: This file contains the OSAL Power Management API.
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Copyright 2004-2007 Texas Instruments Incorporated. All rights reserved.
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IMPORTANT: Your use of this Software is limited to those specific rights
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granted under the terms of a software license agreement between the user
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who downloaded the software, his/her employer (which must be your employer)
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and Texas Instruments Incorporated (the "License"). You may not use this
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Software unless you agree to abide by the terms of the License. The License
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limits your use, and you acknowledge, that the Software may not be modified,
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copied or distributed unless embedded on a Texas Instruments microcontroller
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or used solely and exclusively in conjunction with a Texas Instruments radio
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frequency transceiver, which is integrated into your product. Other than for
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the foregoing purpose, you may not use, reproduce, copy, prepare derivative
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works of, modify, distribute, perform, display or sell this Software and/or
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its documentation for any purpose.
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YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
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PROVIDED <EFBFBD>AS IS<EFBFBD> WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
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INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
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NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
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TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
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NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
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LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
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INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
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OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
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OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
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(INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
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Should you have any questions regarding your right to use this Software,
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contact Texas Instruments Incorporated at www.TI.com.
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**************************************************************************************************/
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/*********************************************************************
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* INCLUDES
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*/
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#include "comdef.h"
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#include "OnBoard.h"
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#include "OSAL.h"
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#include "OSAL_Tasks.h"
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#include "OSAL_Timers.h"
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#include "OSAL_PwrMgr.h"
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/*********************************************************************
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* MACROS
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*/
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/*********************************************************************
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* CONSTANTS
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*/
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/*********************************************************************
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* TYPEDEFS
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*/
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/*********************************************************************
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* GLOBAL VARIABLES
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*/
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/* This global variable stores the power management attributes.
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*/
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pwrmgr_attribute_t pwrmgr_attribute;
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/*********************************************************************
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* EXTERNAL VARIABLES
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*/
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/*********************************************************************
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* EXTERNAL FUNCTIONS
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*/
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/*********************************************************************
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* LOCAL VARIABLES
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*/
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/*********************************************************************
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* LOCAL FUNCTION PROTOTYPES
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*/
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/*********************************************************************
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* FUNCTIONS
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*********************************************************************/
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/*********************************************************************
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* @fn osal_pwrmgr_init
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*
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* @brief Initialize the power management system.
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*
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* @param none.
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*
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* @return none.
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*/
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void osal_pwrmgr_init( void )
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{
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pwrmgr_attribute.pwrmgr_device = PWRMGR_ALWAYS_ON; // Default to no power conservation.
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pwrmgr_attribute.pwrmgr_task_state = 0; // Cleared. All set to conserve
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}
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/*********************************************************************
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* @fn osal_pwrmgr_device
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*
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* @brief Sets the device power characteristic.
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*
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* @param pwrmgr_device - type of power devices. With PWRMGR_ALWAYS_ON
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* selection, there is no power savings and the device is most
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* likely on mains power. The PWRMGR_BATTERY selection allows the
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* HAL sleep manager to enter sleep.
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*
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* @return none
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*/
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void osal_pwrmgr_device( uint8 pwrmgr_device )
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{
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pwrmgr_attribute.pwrmgr_device = pwrmgr_device;
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}
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/*********************************************************************
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* @fn osal_pwrmgr_task_state
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*
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* @brief This function is called by each task to state whether or
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* not this task wants to conserve power.
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*
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* @param task_id - calling task ID.
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* state - whether the calling task wants to
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* conserve power or not.
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*
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* @return SUCCESS if task complete
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*/
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uint8 osal_pwrmgr_task_state( uint8 task_id, uint8 state )
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{
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if ( task_id >= tasksCnt )
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return ( INVALID_TASK );
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if ( state == PWRMGR_CONSERVE )
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{
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// Clear the task state flag
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pwrmgr_attribute.pwrmgr_task_state &= ~(1 << task_id );
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}
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else
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{
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// Set the task state flag
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pwrmgr_attribute.pwrmgr_task_state |= (1 << task_id);
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}
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return ( SUCCESS );
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}
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#if defined( POWER_SAVING )
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/*********************************************************************
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* @fn osal_pwrmgr_powerconserve
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*
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* @brief This function is called from the main OSAL loop when there are
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* no events scheduled and shouldn't be called from anywhere else.
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*
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* @param none.
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*
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* @return none.
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*/
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void osal_pwrmgr_powerconserve( void )
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{
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uint16 next;
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halIntState_t intState;
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// Should we even look into power conservation
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if ( pwrmgr_attribute.pwrmgr_device != PWRMGR_ALWAYS_ON )
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{
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// Are all tasks in agreement to conserve
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if ( pwrmgr_attribute.pwrmgr_task_state == 0 )
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{
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// Hold off interrupts.
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HAL_ENTER_CRITICAL_SECTION( intState );
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// Get next time-out
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next = osal_next_timeout();
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// Re-enable interrupts.
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HAL_EXIT_CRITICAL_SECTION( intState );
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// Put the processor into sleep mode
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OSAL_SET_CPU_INTO_SLEEP( next );
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}
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}
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}
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#endif /* POWER_SAVING */
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/*********************************************************************
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*********************************************************************/
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