1 | /*******************************************************************************
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2 | * DISCLAIMER
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3 | * This software is supplied by Renesas Electronics Corporation and is only
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4 | * intended for use with Renesas products. No other uses are authorized. This
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5 | * software is owned by Renesas Electronics Corporation and is protected under
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6 | * all applicable laws, including copyright laws.
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7 | * THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING
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8 | * THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT
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9 | * LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
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10 | * AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.
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11 | * TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS
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12 | * ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE
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13 | * FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
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14 | * ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE
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15 | * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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16 | * Renesas reserves the right, without notice, to make changes to this software
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17 | * and to discontinue the availability of this software. By using this software,
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18 | * you agree to the additional terms and conditions found by accessing the
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19 | * following link:
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20 | * http://www.renesas.com/disclaimer
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21 | * Copyright (C) 2012 - 2015 Renesas Electronics Corporation. All rights reserved.
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22 | *******************************************************************************/
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23 | /**************************************************************************//**
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24 | * @file nvic_wrapper.c
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25 | * $Rev: $
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26 | * $Date:: $
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27 | * @brief Wrapper between NVIC(for Cortex-M) and GIC(for Cortex-A9)
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28 | ******************************************************************************/
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29 |
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30 | /******************************************************************************
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31 | Includes <System Includes> , "Project Includes"
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32 | ******************************************************************************/
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33 | #include "cmsis.h"
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34 | #include "wdt_iodefine.h"
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35 | #include "nvic_wrapper.h"
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36 |
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37 | /******************************************************************************
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38 | Typedef definitions
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39 | ******************************************************************************/
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40 |
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41 | /******************************************************************************
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42 | Macro definitions
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43 | ******************************************************************************/
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44 | #define PRIO_BITS (7) /* Set binary point to 0 in gic.c */
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45 | #define WDT_WTCNT_WRITE (0x5A00)
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46 | #define WDT_WTCSR_WRITE (0xA500)
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47 | #define WDT_WRCSR_WOVF_WRITE (0xA500)
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48 | #define WDT_WRCSR_RSTE_WRITE (0x5A00)
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49 |
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50 | /******************************************************************************
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51 | Imported global variables and functions (from other files)
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52 | ******************************************************************************/
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53 |
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54 | /******************************************************************************
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55 | Exported global variables and functions (to be accessed by other files)
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56 | ******************************************************************************/
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57 |
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58 | /******************************************************************************
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59 | Private global variables and functions
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60 | ******************************************************************************/
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61 |
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62 |
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63 |
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64 | /* ########################## NVIC functions #################################### */
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65 | void NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
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66 | {
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67 | GIC_SetBinaryPoint(PriorityGroup);
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68 | }
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69 |
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70 |
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71 | uint32_t NVIC_GetPriorityGrouping(void)
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72 | {
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73 | return GIC_GetBinaryPoint();
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74 | }
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75 |
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76 |
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77 | void NVIC_EnableIRQ(IRQn_Type IRQn)
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78 | {
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79 | GIC_EnableIRQ(IRQn);
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80 | }
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81 |
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82 |
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83 | void NVIC_DisableIRQ(IRQn_Type IRQn)
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84 | {
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85 | GIC_DisableIRQ(IRQn);
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86 | }
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87 |
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88 |
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89 | uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
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90 | {
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91 | uint32_t pending;
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92 |
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93 | pending = GIC_GetIRQStatus(IRQn);
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94 | pending = (pending & 0x00000001);
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95 |
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96 | return pending;
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97 | }
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98 |
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99 |
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100 | void NVIC_SetPendingIRQ(IRQn_Type IRQn)
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101 | {
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102 | GIC_SetPendingIRQ(IRQn);
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103 | }
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104 |
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105 |
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106 | void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
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107 | {
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108 | GIC_ClearPendingIRQ(IRQn);
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109 | }
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110 |
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111 |
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112 | uint32_t NVIC_GetActive(IRQn_Type IRQn)
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113 | {
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114 | uint32_t active;
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115 |
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116 | active = GIC_GetIRQStatus(IRQn);
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117 | active = ((active >> 1) & 0x00000001);
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118 |
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119 | return active;
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120 | }
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121 |
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122 |
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123 | void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
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124 | {
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125 | GIC_SetPriority(IRQn, (priority << 3));
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126 | }
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127 |
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128 |
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129 | uint32_t NVIC_GetPriority(IRQn_Type IRQn)
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130 | {
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131 | uint32_t priority_field;
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132 |
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133 | priority_field = GIC_GetPriority(IRQn);
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134 | priority_field = (priority_field >> 3);
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135 | return priority_field;
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136 | }
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137 |
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138 |
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139 | uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority)
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140 | {
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141 | uint32_t PriorityGroupTmp = (PriorityGroup & 0x07); /* only values 0..7 are used */
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142 | uint32_t PreemptPriorityBits;
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143 | uint32_t SubPriorityBits;
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144 |
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145 | PreemptPriorityBits = ((7 - PriorityGroupTmp) > PRIO_BITS) ? PRIO_BITS : 7 - PriorityGroupTmp;
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146 | SubPriorityBits = ((PriorityGroupTmp + PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + PRIO_BITS;
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147 |
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148 | return (
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149 | ((PreemptPriority & ((1 << (PreemptPriorityBits)) - 1)) << SubPriorityBits) |
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150 | ((SubPriority & ((1 << (SubPriorityBits )) - 1)))
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151 | );
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152 | }
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153 |
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154 |
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155 | void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* pPreemptPriority, uint32_t* pSubPriority)
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156 | {
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157 | uint32_t PriorityGroupTmp = (PriorityGroup & 0x07); /* only values 0..7 are used */
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158 | uint32_t PreemptPriorityBits;
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159 | uint32_t SubPriorityBits;
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160 |
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161 | PreemptPriorityBits = ((7 - PriorityGroupTmp) > PRIO_BITS) ? PRIO_BITS : 7 - PriorityGroupTmp;
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162 | SubPriorityBits = ((PriorityGroupTmp + PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + PRIO_BITS;
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163 |
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164 | *pPreemptPriority = (Priority >> SubPriorityBits) & ((1 << (PreemptPriorityBits)) - 1);
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165 | *pSubPriority = (Priority ) & ((1 << (SubPriorityBits )) - 1);
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166 | }
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167 |
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168 | void NVIC_SystemReset(void)
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169 | {
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170 | uint16_t reg;
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171 | uint8_t dummy_read;
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172 | /* Use Watch Dog Timer to system reset */
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173 |
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174 | /* Set WT/IT bit of WTCSR to 1 = Watch Dog */
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175 | /* CLK = 000, 1xP0phi(=33.3333MHz) = 7.7us */
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176 | reg = (WDT_WTCSR_WRITE | 0x0058);
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177 | WDTWTCSR = reg;
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178 |
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179 | /* Clear Count reg */
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180 | reg = (WDT_WTCNT_WRITE | 0x0000);
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181 | WDTWTCNT = reg;
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182 |
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183 | /* Clear WOVF flag */
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184 | dummy_read = WDTWRCSR;
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185 | reg = (WDT_WRCSR_WOVF_WRITE | (dummy_read & 0x0000));
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186 | WDTWRCSR = reg;
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187 | /* Enable Internal Reset */
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188 | reg = (WDT_WRCSR_RSTE_WRITE | 0x005F);
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189 | WDTWRCSR = reg;
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190 |
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191 | /* Watch Dog start */
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192 | reg = (WDT_WTCSR_WRITE | 0x0078);
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193 | WDTWTCSR = reg;
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194 |
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195 | while(1); /* wait Internal Reset */
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196 | }
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197 |
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198 | /* ################################## SysTick function ############################################ */
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199 | uint32_t SysTick_Config(uint32_t ticks)
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200 | {
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201 | /* Not support this function */
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202 | /* Use mbed Ticker */
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203 | return (1); /* impossible */
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204 | }
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205 |
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206 |
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207 | /* ##################################### Debug In/Output function ########################################### */
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208 | uint32_t ITM_SendChar (uint32_t ch)
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209 | {
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210 | /* Not support this function */
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211 | /* Use mbed Serial */
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212 | return (ch);
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213 | }
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214 |
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215 |
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216 | int32_t ITM_ReceiveChar (void)
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217 | {
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218 | /* Not support this function */
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219 | /* Use mbed Serial */
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220 | return (-1); /* no character available */
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221 | }
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222 |
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223 |
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224 | int32_t ITM_CheckChar (void)
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225 | {
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226 | /* Not support this function */
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227 | /* Use mbed Serial */
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228 | return (0); /* no character available */
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229 | }
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230 |
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