65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
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/*
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* Copyright (C) 2017 C-SKY Microsystems Co., Ltd. All rights reserved.
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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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* @file system_PHOBOS.c
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* @brief CSI Device System Source File for PHOBOS
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* @version V1.0
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* @date 02. June 2017
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******************************************************************************/
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#include "soc.h"
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#include "csi_core.h"
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#include "config.h"
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/*----------------------------------------------------------------------------
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Define clocks
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*----------------------------------------------------------------------------*/
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/*----------------------------------------------------------------------------
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System Core Clock Variable
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*----------------------------------------------------------------------------*/
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int SystemCoreClock = SYSTEM_CLOCK; /* System Core Clock Frequency */
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extern int __Vectors;
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void SystemCoreClockUpdate(void)
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{
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SystemCoreClock = SYSTEM_CLOCK;
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}
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/**
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* @brief initialize the system
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* Initialize the psr and vbr.
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* @param None
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* @return None
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*/
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void SystemInit(void)
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{
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/* Here we may setting exception vector, MGU, cache, and so on. */
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#ifdef CONFIG_SYSTEM_SECURE
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__set_PSR(0xc0000140);
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#else
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__set_PSR(0x80000140);
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#endif
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__set_VBR((uint32_t) & (__Vectors));
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drv_coret_config(200 * 1000, CORET_IRQn); //10ms
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drv_nvic_enable_irq(CORET_IRQn);
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SystemCoreClock = SYSTEM_CLOCK;
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}
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