tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_KPSDK_CODE/hal/pit/fsl_pit_hal.c

   1 /*
   2  * Copyright (c) 2013 - 2014, Freescale Semiconductor, Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without modification,
   6  * are permitted provided that the following conditions are met:
   7  *
   8  * o Redistributions of source code must retain the above copyright notice, this list
   9  *   of conditions and the following disclaimer.
  10  *
  11  * o Redistributions in binary form must reproduce the above copyright notice, this
  12  *   list of conditions and the following disclaimer in the documentation and/or
  13  *   other materials provided with the distribution.
  14  *
  15  * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
  16  *   contributors may be used to endorse or promote products derived from this
  17  *   software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
  23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  26  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "fsl_pit_hal.h"
  32
  33 /*******************************************************************************
  34  * Code
  35  ******************************************************************************/
  36
  37 #if FSL_FEATURE_PIT_HAS_LIFETIME_TIMER
  38 /*FUNCTION**********************************************************************
  39  *
  40  * Function Name : PIT_HAL_ReadLifetimeTimerCount
  41  * Description   : Read current lifefime counter value.
  42  * Lifetime timer is 64-bit timer which chains timer 0 and timer 1 together.
  43  * So, timer 0 and 1 should by chained by calling PIT_HAL_SetTimerChainCmd
  44  * before using this timer. The period of lifetime timer equals to "period of
  45  * timer 0 * period of timer 1". For the 64-bit value, higher 32-bit will have
  46  * the value of timer 1, and lower 32-bit have the value of timer 0.
  47 *
  48  *END**************************************************************************/
  49 uint64_t PIT_HAL_ReadLifetimeTimerCount(uint32_t baseAddr)
  50 {
  51     uint32_t valueH = 0U, valueL = 0U;
  52
  53     /* LTMR64H should be read before LTMR64L */
  54     valueH = HW_PIT_LTMR64H_RD(baseAddr);
  55     valueL = HW_PIT_LTMR64L_RD(baseAddr);
  56     return (((uint64_t)valueH << 32U) + (uint64_t)(valueL));
  57 }
  58 #endif /* FSL_FEATURE_PIT_HAS_LIFETIME_TIMER*/
  59
  60 /*******************************************************************************
  61  * EOF
  62  ******************************************************************************/
  63