| /* |
| * Copyright (c) 2016, Freescale Semiconductor, Inc. |
| * Copyright 2016-2017 NXP |
| * |
| * Redistribution and use in source and binary forms, with or without modification, |
| * are permitted provided that the following conditions are met: |
| * |
| * o Redistributions of source code must retain the above copyright notice, this list |
| * of conditions and the following disclaimer. |
| * |
| * o Redistributions in binary form must reproduce the above copyright notice, this |
| * list of conditions and the following disclaimer in the documentation and/or |
| * other materials provided with the distribution. |
| * |
| * o Neither the name of the copyright holder nor the names of its |
| * contributors may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR |
| * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "fsl_mrt.h" |
| |
| /******************************************************************************* |
| * Prototypes |
| ******************************************************************************/ |
| /*! |
| * @brief Gets the instance from the base address |
| * |
| * @param base Multi-Rate timer peripheral base address |
| * |
| * @return The MRT instance |
| */ |
| static uint32_t MRT_GetInstance(MRT_Type *base); |
| |
| /******************************************************************************* |
| * Variables |
| ******************************************************************************/ |
| /*! @brief Pointers to MRT bases for each instance. */ |
| static MRT_Type *const s_mrtBases[] = MRT_BASE_PTRS; |
| |
| #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) |
| /*! @brief Pointers to MRT clocks for each instance. */ |
| static const clock_ip_name_t s_mrtClocks[] = MRT_CLOCKS; |
| #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ |
| |
| /*! @brief Pointers to MRT resets for each instance. */ |
| static const reset_ip_name_t s_mrtResets[] = MRT_RSTS; |
| |
| /******************************************************************************* |
| * Code |
| ******************************************************************************/ |
| static uint32_t MRT_GetInstance(MRT_Type *base) |
| { |
| uint32_t instance; |
| uint32_t mrtArrayCount = (sizeof(s_mrtBases) / sizeof(s_mrtBases[0])); |
| |
| /* Find the instance index from base address mappings. */ |
| for (instance = 0; instance < mrtArrayCount; instance++) |
| { |
| if (s_mrtBases[instance] == base) |
| { |
| break; |
| } |
| } |
| |
| assert(instance < mrtArrayCount); |
| |
| return instance; |
| } |
| |
| void MRT_Init(MRT_Type *base, const mrt_config_t *config) |
| { |
| assert(config); |
| |
| #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) |
| /* Ungate the MRT clock */ |
| CLOCK_EnableClock(s_mrtClocks[MRT_GetInstance(base)]); |
| #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ |
| |
| /* Reset the module */ |
| RESET_PeripheralReset(s_mrtResets[MRT_GetInstance(base)]); |
| |
| /* Set timer operating mode */ |
| base->MODCFG = MRT_MODCFG_MULTITASK(config->enableMultiTask); |
| } |
| |
| void MRT_Deinit(MRT_Type *base) |
| { |
| /* Stop all the timers */ |
| MRT_StopTimer(base, kMRT_Channel_0); |
| MRT_StopTimer(base, kMRT_Channel_1); |
| MRT_StopTimer(base, kMRT_Channel_2); |
| MRT_StopTimer(base, kMRT_Channel_3); |
| |
| #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) |
| /* Gate the MRT clock*/ |
| CLOCK_DisableClock(s_mrtClocks[MRT_GetInstance(base)]); |
| #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ |
| } |
| |
| void MRT_UpdateTimerPeriod(MRT_Type *base, mrt_chnl_t channel, uint32_t count, bool immediateLoad) |
| { |
| uint32_t newValue = count; |
| if (((base->CHANNEL[channel].CTRL & MRT_CHANNEL_CTRL_MODE_MASK) == kMRT_OneShotMode) || (immediateLoad)) |
| { |
| /* For one-shot interrupt mode, load the new value immediately even if user forgot to enable */ |
| newValue |= MRT_CHANNEL_INTVAL_LOAD_MASK; |
| } |
| |
| /* Update the timer interval value */ |
| base->CHANNEL[channel].INTVAL = newValue; |
| } |