| /* |
| * Copyright (c) 2016, Freescale Semiconductor, Inc. |
| * Copyright 2016-2017 NXP |
| * All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include "fsl_utick.h" |
| #include "fsl_power.h" |
| /******************************************************************************* |
| * Definitions |
| ******************************************************************************/ |
| |
| /* Component ID definition, used by tools. */ |
| #ifndef FSL_COMPONENT_ID |
| #define FSL_COMPONENT_ID "platform.drivers.utick" |
| #endif |
| |
| /* Typedef for interrupt handler. */ |
| typedef void (*utick_isr_t)(UTICK_Type *base, utick_callback_t cb); |
| |
| /******************************************************************************* |
| * Prototypes |
| ******************************************************************************/ |
| /*! |
| * @brief Gets the instance from the base address |
| * |
| * @param base UTICK peripheral base address |
| * |
| * @return The UTICK instance |
| */ |
| static uint32_t UTICK_GetInstance(UTICK_Type *base); |
| |
| /******************************************************************************* |
| * Variables |
| ******************************************************************************/ |
| /* Array of UTICK handle. */ |
| static utick_callback_t s_utickHandle[FSL_FEATURE_SOC_UTICK_COUNT]; |
| /* Array of UTICK peripheral base address. */ |
| static UTICK_Type *const s_utickBases[] = UTICK_BASE_PTRS; |
| /* Array of UTICK IRQ number. */ |
| static const IRQn_Type s_utickIRQ[] = UTICK_IRQS; |
| #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) |
| /* Array of UTICK clock name. */ |
| static const clock_ip_name_t s_utickClock[] = UTICK_CLOCKS; |
| #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ |
| |
| #if !(defined(FSL_FEATURE_UTICK_HAS_NO_RESET) && FSL_FEATURE_UTICK_HAS_NO_RESET) |
| /*! @brief Pointers to UTICK resets for each instance. */ |
| static const reset_ip_name_t s_utickResets[] = UTICK_RSTS; |
| #endif |
| |
| /* UTICK ISR for transactional APIs. */ |
| static utick_isr_t s_utickIsr; |
| |
| /******************************************************************************* |
| * Code |
| ******************************************************************************/ |
| static uint32_t UTICK_GetInstance(UTICK_Type *base) |
| { |
| uint32_t instance; |
| |
| /* Find the instance index from base address mappings. */ |
| for (instance = 0; instance < ARRAY_SIZE(s_utickBases); instance++) |
| { |
| if (s_utickBases[instance] == base) |
| { |
| break; |
| } |
| } |
| |
| assert(instance < ARRAY_SIZE(s_utickBases)); |
| |
| return instance; |
| } |
| |
| /*! |
| * brief Starts UTICK. |
| * |
| * This function starts a repeat/onetime countdown with an optional callback |
| * |
| * param base UTICK peripheral base address. |
| * param mode UTICK timer mode (ie kUTICK_onetime or kUTICK_repeat) |
| * param count UTICK timer mode (ie kUTICK_onetime or kUTICK_repeat) |
| * param cb UTICK callback (can be left as NULL if none, otherwise should be a void func(void)) |
| * return none |
| */ |
| void UTICK_SetTick(UTICK_Type *base, utick_mode_t mode, uint32_t count, utick_callback_t cb) |
| { |
| uint32_t instance; |
| |
| /* Get instance from peripheral base address. */ |
| instance = UTICK_GetInstance(base); |
| |
| /* Save the handle in global variables to support the double weak mechanism. */ |
| s_utickHandle[instance] = cb; |
| EnableDeepSleepIRQ(s_utickIRQ[instance]); |
| base->CTRL = count | UTICK_CTRL_REPEAT(mode); |
| } |
| |
| /*! |
| * brief Initializes an UTICK by turning its bus clock on |
| * |
| */ |
| void UTICK_Init(UTICK_Type *base) |
| { |
| #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) |
| /* Enable utick clock */ |
| CLOCK_EnableClock(s_utickClock[UTICK_GetInstance(base)]); |
| #endif |
| |
| #if !(defined(FSL_FEATURE_UTICK_HAS_NO_RESET) && FSL_FEATURE_UTICK_HAS_NO_RESET) |
| RESET_PeripheralReset(s_utickResets[UTICK_GetInstance(base)]); |
| #endif |
| |
| /* Power up Watchdog oscillator*/ |
| POWER_DisablePD(kPDRUNCFG_PD_WDT_OSC); |
| s_utickIsr = UTICK_HandleIRQ; |
| } |
| |
| /*! |
| * brief Deinitializes a UTICK instance. |
| * |
| * This function shuts down Utick bus clock |
| * |
| * param base UTICK peripheral base address. |
| */ |
| void UTICK_Deinit(UTICK_Type *base) |
| { |
| /* Turn off utick */ |
| base->CTRL = 0; |
| #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) |
| /* Disable utick clock */ |
| CLOCK_DisableClock(s_utickClock[UTICK_GetInstance(base)]); |
| #endif |
| } |
| |
| /*! |
| * brief Get Status Flags. |
| * |
| * This returns the status flag |
| * |
| * param base UTICK peripheral base address. |
| * return status register value |
| */ |
| uint32_t UTICK_GetStatusFlags(UTICK_Type *base) |
| { |
| return (base->STAT); |
| } |
| |
| /*! |
| * brief Clear Status Interrupt Flags. |
| * |
| * This clears intr status flag |
| * |
| * param base UTICK peripheral base address. |
| * return none |
| */ |
| void UTICK_ClearStatusFlags(UTICK_Type *base) |
| { |
| base->STAT = UTICK_STAT_INTR_MASK; |
| } |
| |
| /*! |
| * brief UTICK Interrupt Service Handler. |
| * |
| * This function handles the interrupt and refers to the callback array in the driver to callback user (as per request |
| * in UTICK_SetTick()). |
| * if no user callback is scheduled, the interrupt will simply be cleared. |
| * |
| * param base UTICK peripheral base address. |
| * param cb callback scheduled for this instance of UTICK |
| * return none |
| */ |
| void UTICK_HandleIRQ(UTICK_Type *base, utick_callback_t cb) |
| { |
| UTICK_ClearStatusFlags(base); |
| if (cb) |
| { |
| cb(); |
| } |
| } |
| |
| #if defined(UTICK0) |
| void UTICK0_DriverIRQHandler(void) |
| { |
| s_utickIsr(UTICK0, s_utickHandle[0]); |
| /* Add for ARM errata 838869, affects Cortex-M4, Cortex-M4F Store immediate overlapping |
| exception return operation might vector to incorrect interrupt */ |
| #if defined __CORTEX_M && (__CORTEX_M == 4U) |
| __DSB(); |
| #endif |
| } |
| #endif |
| #if defined(UTICK1) |
| void UTICK1_DriverIRQHandler(void) |
| { |
| s_utickIsr(UTICK1, s_utickHandle[1]); |
| /* Add for ARM errata 838869, affects Cortex-M4, Cortex-M4F Store immediate overlapping |
| exception return operation might vector to incorrect interrupt */ |
| #if defined __CORTEX_M && (__CORTEX_M == 4U) |
| __DSB(); |
| #endif |
| } |
| #endif |
| #if defined(UTICK2) |
| void UTICK2_DriverIRQHandler(void) |
| { |
| s_utickIsr(UTICK2, s_utickHandle[2]); |
| /* Add for ARM errata 838869, affects Cortex-M4, Cortex-M4F Store immediate overlapping |
| exception return operation might vector to incorrect interrupt */ |
| #if defined __CORTEX_M && (__CORTEX_M == 4U) |
| __DSB(); |
| #endif |
| } |
| #endif |