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