mirror of https://github.com/ARMmbed/mbed-os.git
230 lines
7.3 KiB
C
230 lines
7.3 KiB
C
/*******************************************************************************
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* DISCLAIMER
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* This software is supplied by Renesas Electronics Corporation and is only
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* intended for use with Renesas products. No other uses are authorized. This
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* software is owned by Renesas Electronics Corporation and is protected under
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* all applicable laws, including copyright laws.
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* THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING
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* THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT
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* LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
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* AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.
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* TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS
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* ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE
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* FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
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* ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE
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* BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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* Renesas reserves the right, without notice, to make changes to this software
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* and to discontinue the availability of this software. By using this software,
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* you agree to the additional terms and conditions found by accessing the
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* following link:
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* http://www.renesas.com/disclaimer
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* Copyright (C) 2012 - 2015 Renesas Electronics Corporation. All rights reserved.
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*******************************************************************************/
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/**************************************************************************//**
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* @file nvic_wrapper.c
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* $Rev: $
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* $Date:: $
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* @brief Wrapper between NVIC(for Cortex-M) and GIC(for Cortex-A9)
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******************************************************************************/
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/******************************************************************************
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Includes <System Includes> , "Project Includes"
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******************************************************************************/
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#include "MBRZA1H.h"
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#include "wdt_iodefine.h"
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#include "nvic_wrapper.h"
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#include "gic.h"
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/******************************************************************************
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Typedef definitions
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******************************************************************************/
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/******************************************************************************
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Macro definitions
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******************************************************************************/
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#define PRIO_BITS (7) /* Set binary point to 0 in gic.c */
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#define WDT_WTCNT_WRITE (0x5A00)
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#define WDT_WTCSR_WRITE (0xA500)
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#define WDT_WRCSR_WOVF_WRITE (0xA500)
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#define WDT_WRCSR_RSTE_WRITE (0x5A00)
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/******************************************************************************
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Imported global variables and functions (from other files)
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******************************************************************************/
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/******************************************************************************
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Exported global variables and functions (to be accessed by other files)
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******************************************************************************/
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/******************************************************************************
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Private global variables and functions
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******************************************************************************/
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/* ########################## NVIC functions #################################### */
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void NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
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{
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GIC_SetBinaryPoint(PriorityGroup);
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}
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uint32_t NVIC_GetPriorityGrouping(void)
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{
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return GIC_GetBinaryPoint(0);
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}
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void NVIC_EnableIRQ(IRQn_Type IRQn)
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{
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GIC_EnableIRQ(IRQn);
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}
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void NVIC_DisableIRQ(IRQn_Type IRQn)
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{
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GIC_DisableIRQ(IRQn);
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}
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uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
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{
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uint32_t pending;
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pending = GIC_GetIRQStatus(IRQn);
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pending = (pending & 0x00000001);
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return pending;
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}
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void NVIC_SetPendingIRQ(IRQn_Type IRQn)
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{
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GIC_SetPendingIRQ(IRQn);
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}
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void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
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{
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GIC_ClearPendingIRQ(IRQn);
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}
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uint32_t NVIC_GetActive(IRQn_Type IRQn)
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{
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uint32_t active;
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active = GIC_GetIRQStatus(IRQn);
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active = ((active >> 1) & 0x00000001);
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return active;
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}
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void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
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{
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GIC_SetPriority(IRQn, (priority << 3));
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}
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uint32_t NVIC_GetPriority(IRQn_Type IRQn)
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{
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uint32_t priority_field;
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priority_field = GIC_GetPriority(IRQn);
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priority_field = (priority_field >> 3);
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return priority_field;
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}
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uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority)
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{
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uint32_t PriorityGroupTmp = (PriorityGroup & 0x07); /* only values 0..7 are used */
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uint32_t PreemptPriorityBits;
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uint32_t SubPriorityBits;
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PreemptPriorityBits = ((7 - PriorityGroupTmp) > PRIO_BITS) ? PRIO_BITS : 7 - PriorityGroupTmp;
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SubPriorityBits = ((PriorityGroupTmp + PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + PRIO_BITS;
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return (
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((PreemptPriority & ((1 << (PreemptPriorityBits)) - 1)) << SubPriorityBits) |
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((SubPriority & ((1 << (SubPriorityBits )) - 1)))
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);
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}
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void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* pPreemptPriority, uint32_t* pSubPriority)
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{
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uint32_t PriorityGroupTmp = (PriorityGroup & 0x07); /* only values 0..7 are used */
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uint32_t PreemptPriorityBits;
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uint32_t SubPriorityBits;
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PreemptPriorityBits = ((7 - PriorityGroupTmp) > PRIO_BITS) ? PRIO_BITS : 7 - PriorityGroupTmp;
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SubPriorityBits = ((PriorityGroupTmp + PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + PRIO_BITS;
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*pPreemptPriority = (Priority >> SubPriorityBits) & ((1 << (PreemptPriorityBits)) - 1);
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*pSubPriority = (Priority ) & ((1 << (SubPriorityBits )) - 1);
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}
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void NVIC_SystemReset(void)
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{
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uint16_t reg;
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uint8_t dummy_read;
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/* Use Watch Dog Timer to system reset */
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/* Set WT/IT bit of WTCSR to 1 = Watch Dog */
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/* CLK = 000, 1xP0phi(=33.3333MHz) = 7.7us */
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reg = (WDT_WTCSR_WRITE | 0x0058);
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WDTWTCSR = reg;
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/* Clear Count reg */
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reg = (WDT_WTCNT_WRITE | 0x0000);
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WDTWTCNT = reg;
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/* Clear WOVF flag */
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dummy_read = WDTWRCSR;
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reg = (WDT_WRCSR_WOVF_WRITE | (dummy_read & 0x0000));
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WDTWRCSR = reg;
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/* Enable Internal Reset */
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reg = (WDT_WRCSR_RSTE_WRITE | 0x005F);
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WDTWRCSR = reg;
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/* Watch Dog start */
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reg = (WDT_WTCSR_WRITE | 0x0078);
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WDTWTCSR = reg;
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while(1); /* wait Internal Reset */
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}
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/* ################################## SysTick function ############################################ */
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uint32_t SysTick_Config(uint32_t ticks)
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{
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/* Not support this function */
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/* Use mbed Ticker */
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return (1); /* impossible */
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}
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/* ##################################### Debug In/Output function ########################################### */
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uint32_t ITM_SendChar (uint32_t ch)
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{
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/* Not support this function */
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/* Use mbed Serial */
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return (ch);
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}
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int32_t ITM_ReceiveChar (void) {
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/* Not support this function */
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/* Use mbed Serial */
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return (-1); /* no character available */
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}
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int32_t ITM_CheckChar (void) {
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/* Not support this function */
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/* Use mbed Serial */
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return (0); /* no character available */
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}
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