/*************************************************************************************************/
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/*!
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* \file
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*
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* \brief System hooks.
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*
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* Copyright (c) 2013-2019 Arm Ltd. All Rights Reserved.
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*
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* Copyright (c) 2019-2020 Packetcraft, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*************************************************************************************************/
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#include "pal_sys.h"
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#include "pal_uart.h"
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#include "mk_common.h"
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#include "mk_misc.h"
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/**************************************************************************************************
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Macros
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**************************************************************************************************/
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/*! \brief Starting memory location of free memory. */
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#define FREE_MEM_START ((uint8_t *)palSysFreeMem)
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/**************************************************************************************************
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Global Variables
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**************************************************************************************************/
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/*! \brief Free memory for pool buffers (align to word boundary). */
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static uint32_t palSysFreeMem[FREE_MEM_SIZE / sizeof(uint32_t)];
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uint8_t *SystemHeapStart = (uint8_t *)palSysFreeMem;
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uint32_t SystemHeapSize = FREE_MEM_SIZE;
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/*! \brief Number of assertions. */
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static uint32_t palSysAssertCount;
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/*! \brief Trap enabled flag. */
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static volatile bool_t PalSysAssertTrapEnable;
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/// static volatile uint32_t palSysBusyCount;
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/**************************************************************************************************
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Functions
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**************************************************************************************************/
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/*************************************************************************************************/
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/*!
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* \brief Enter a critical section.
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*/
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/*************************************************************************************************/
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uint32_t PalEnterCs(void)
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{
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return int_lock();
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}
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/*************************************************************************************************/
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/*!
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* \brief Exit a critical section.
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*/
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/*************************************************************************************************/
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void PalExitCs(uint32_t lock)
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{
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int_unlock(lock);
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}
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/*************************************************************************************************/
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/*!
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* \brief Common platform initialization.
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*/
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/*************************************************************************************************/
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void PalSysInit(void)
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{
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palSysAssertCount = 0;
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PalSysAssertTrapEnable = TRUE;
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/// palSysBusyCount = 0;
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#ifdef DEBUG
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/* Reset free memory. */
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memset(SystemHeapStart, 0, SystemHeapSize);
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#endif
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}
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/*************************************************************************************************/
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/*!
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* \brief System fault trap.
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*/
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/*************************************************************************************************/
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void PalSysAssertTrap(void)
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{
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palSysAssertCount++;
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while (PalSysAssertTrapEnable)
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{
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}
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}
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/*************************************************************************************************/
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/*!
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* \brief Set system trap.
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*
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* \param enable Enable assert trap or not.
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*/
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/*************************************************************************************************/
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void PalSysSetTrap(bool_t enable)
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{
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PalSysAssertTrapEnable = enable;
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}
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/*************************************************************************************************/
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/*!
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* \brief Get assert count.
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*/
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/*************************************************************************************************/
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uint32_t PalSysGetAssertCount(void)
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{
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return palSysAssertCount;
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}
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/*************************************************************************************************/
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/*!
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* \brief Count stack usage.
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*
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* \return Number of bytes used by the stack.
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*/
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/*************************************************************************************************/
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uint32_t PalSysGetStackUsage(void)
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{
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/* Not available; stub routine. */
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return 0;
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}
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/*************************************************************************************************/
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/*!
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* \brief System sleep.
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*/
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/*************************************************************************************************/
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void PalSysSleep(void)
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{
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/* Clock management for low power mode. */
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/* CPU sleep. */
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__WFI();
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}
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#if 0
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/*************************************************************************************************/
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/*!
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* \brief Check if system is busy.
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*
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* \return TRUE if system is busy.
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*/
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/*************************************************************************************************/
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bool_t PalSysIsBusy(void)
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{
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bool_t sysIsBusy = FALSE;
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uint32_t lock = PalEnterCs();
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sysIsBusy = ((palSysBusyCount == 0) ? FALSE : TRUE);
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PalExitCs(lock);
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return sysIsBusy;
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}
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/*************************************************************************************************/
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/*!
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* \brief Set system busy.
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*
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* \return none.
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*/
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/*************************************************************************************************/
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void PalSysSetBusy(void)
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{
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uint32_t lock = PalEnterCs();
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palSysBusyCount++;
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PalExitCs(lock);
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}
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/*************************************************************************************************/
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/*!
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* \brief Set system idle.
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*/
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/*************************************************************************************************/
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void PalSysSetIdle(void)
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{
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uint32_t lock = PalEnterCs();
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if (palSysBusyCount)
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{
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palSysBusyCount--;
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}
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PalExitCs(lock);
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}
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#endif
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