194 lines
7.2 KiB
C
194 lines
7.2 KiB
C
/*
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* Copyright 2018-2019 NXP
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* All rights reserved.
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*
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include "fsl_common.h"
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#include "fsl_device_registers.h"
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#include "fsl_adapter_timer.h"
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#include "fsl_gpt.h"
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typedef struct _hal_timer_handle_struct_t
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{
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uint32_t timeout;
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uint32_t timerClock_Hz;
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hal_timer_callback_t callback;
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void *callbackParam;
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uint8_t instance;
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} hal_timer_handle_struct_t;
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/*******************************************************************************
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* Variables
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******************************************************************************/
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static GPT_Type *const s_GptBase[] = GPT_BASE_PTRS;
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static hal_timer_handle_t s_timerHandle[sizeof(s_GptBase) / sizeof(GPT_Type *)];
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/************************************************************************************
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*************************************************************************************
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* Private prototypes
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*************************************************************************************
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************************************************************************************/
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/************************************************************************************
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*************************************************************************************
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* Private memory declarations
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*************************************************************************************
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************************************************************************************/
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static void HAL_TimerInterruptHandle(uint8_t instance)
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{
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hal_timer_handle_struct_t *halTimerState = (hal_timer_handle_struct_t *)s_timerHandle[instance];
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GPT_ClearStatusFlags(s_GptBase[halTimerState->instance], kGPT_OutputCompare1Flag);
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if (halTimerState->callback != NULL)
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{
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halTimerState->callback(halTimerState->callbackParam);
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}
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}
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void GPT0_IRQHandler(void);
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void GPT0_IRQHandler(void)
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{
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HAL_TimerInterruptHandle(0);
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SDK_ISR_EXIT_BARRIER;
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}
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void GPT1_IRQHandler(void);
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void GPT1_IRQHandler(void)
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{
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HAL_TimerInterruptHandle(1);
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SDK_ISR_EXIT_BARRIER;
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}
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void GPT2_IRQHandler(void);
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void GPT2_IRQHandler(void)
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{
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HAL_TimerInterruptHandle(2);
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SDK_ISR_EXIT_BARRIER;
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}
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/************************************************************************************
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*************************************************************************************
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* Public functions
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*************************************************************************************
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************************************************************************************/
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hal_timer_status_t HAL_TimerInit(hal_timer_handle_t halTimerHandle, hal_timer_config_t *halTimerConfig)
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{
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IRQn_Type instanceIrq[] = GPT_IRQS;
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IRQn_Type irqId;
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hal_timer_handle_struct_t *halTimerState = halTimerHandle;
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/* Structure of initialize GPT */
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gpt_config_t gptConfig;
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assert(sizeof(hal_timer_handle_struct_t) == HAL_TIMER_HANDLE_SIZE);
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assert(halTimerConfig);
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assert(halTimerHandle);
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assert(halTimerConfig->instance < (sizeof(s_GptBase) / sizeof(GPT_Type *)));
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halTimerState->timeout = halTimerConfig->timeout;
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halTimerState->instance = halTimerConfig->instance;
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halTimerState->timerClock_Hz = halTimerConfig->srcClock_Hz;
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irqId = instanceIrq[halTimerState->instance];
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GPT_GetDefaultConfig(&gptConfig);
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/* Initialize GPT module */
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GPT_Init(s_GptBase[halTimerState->instance], &gptConfig);
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/* Set both GPT modules to 1 second duration */
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GPT_SetOutputCompareValue(s_GptBase[halTimerState->instance], kGPT_OutputCompare_Channel1,
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(uint32_t)USEC_TO_COUNT(halTimerState->timeout, halTimerState->timerClock_Hz));
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/* Enable GPT Output Compare1 interrupt */
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GPT_EnableInterrupts(s_GptBase[halTimerState->instance], (uint32_t)kGPT_OutputCompare1InterruptEnable);
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s_timerHandle[halTimerState->instance] = halTimerHandle;
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NVIC_SetPriority((IRQn_Type)irqId, HAL_TIMER_ISR_PRIORITY);
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(void)EnableIRQ(irqId);
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return kStatus_HAL_TimerSuccess;
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}
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/*************************************************************************************/
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void HAL_TimerDeinit(hal_timer_handle_t halTimerHandle)
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{
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assert(halTimerHandle);
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hal_timer_handle_struct_t *halTimerState = halTimerHandle;
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s_timerHandle[halTimerState->instance] = NULL;
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GPT_Deinit(s_GptBase[halTimerState->instance]);
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}
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/*************************************************************************************/
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void HAL_TimerEnable(hal_timer_handle_t halTimerHandle)
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{
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assert(halTimerHandle);
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hal_timer_handle_struct_t *halTimerState = halTimerHandle;
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GPT_StartTimer(s_GptBase[halTimerState->instance]);
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}
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/*************************************************************************************/
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void HAL_TimerDisable(hal_timer_handle_t halTimerHandle)
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{
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assert(halTimerHandle);
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hal_timer_handle_struct_t *halTimerState = halTimerHandle;
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GPT_StopTimer(s_GptBase[halTimerState->instance]);
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}
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/*************************************************************************************/
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void HAL_TimerInstallCallback(hal_timer_handle_t halTimerHandle, hal_timer_callback_t callback, void *callbackParam)
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{
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assert(halTimerHandle);
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hal_timer_handle_struct_t *halTimerState = halTimerHandle;
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halTimerState->callback = callback;
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halTimerState->callbackParam = callbackParam;
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}
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uint32_t HAL_TimerGetMaxTimeout(hal_timer_handle_t halTimerHandle)
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{
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uint32_t reserveCount;
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assert(halTimerHandle);
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hal_timer_handle_struct_t *halTimerState = halTimerHandle;
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reserveCount = (uint32_t)MSEC_TO_COUNT((4), (halTimerState->timerClock_Hz));
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if ((reserveCount < MSEC_TO_COUNT((1), (halTimerState->timerClock_Hz))) ||
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(reserveCount > (GPT_CNT_COUNT_MASK - 0xfU)))
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{
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/* make sure 1ms timeout doesn't overflow */
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assert(USEC_TO_COUNT(1000, (halTimerState->timerClock_Hz)) < GPT_CNT_COUNT_MASK);
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return 1000;
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}
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return (uint32_t)COUNT_TO_USEC(((uint64_t)GPT_CNT_COUNT_MASK - (uint64_t)reserveCount),
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halTimerState->timerClock_Hz);
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}
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/* return micro us */
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uint32_t HAL_TimerGetCurrentTimerCount(hal_timer_handle_t halTimerHandle)
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{
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assert(halTimerHandle);
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hal_timer_handle_struct_t *halTimerState = halTimerHandle;
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return (uint32_t)COUNT_TO_USEC((uint64_t)GPT_GetCurrentTimerCount(s_GptBase[halTimerState->instance]),
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halTimerState->timerClock_Hz);
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}
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hal_timer_status_t HAL_TimerUpdateTimeout(hal_timer_handle_t halTimerHandle, uint32_t timeout)
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{
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uint32_t tickCount;
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assert(halTimerHandle);
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hal_timer_handle_struct_t *halTimerState = halTimerHandle;
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halTimerState->timeout = timeout;
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tickCount = (uint32_t)USEC_TO_COUNT(halTimerState->timeout, halTimerState->timerClock_Hz);
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if ((tickCount < 1U) || (tickCount > (GPT_CNT_COUNT_MASK - 0xfU)))
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{
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return kStatus_HAL_TimerOutOfRanger;
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}
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GPT_SetOutputCompareValue(s_GptBase[halTimerState->instance], kGPT_OutputCompare_Channel1, tickCount);
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return kStatus_HAL_TimerSuccess;
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}
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void HAL_TimerExitLowpower(hal_timer_handle_t halTimerHandle)
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{
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assert(halTimerHandle);
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}
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void HAL_TimerEnterLowpower(hal_timer_handle_t halTimerHandle)
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{
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assert(halTimerHandle);
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}
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