takashi kadono / Mbed OS Nucleo446_SSD1331

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/platform/mbed_critical.c@3:f3764f852aa8, 2018-10-11 (annotated)

Committer:
kadonotakashi
Date:
Thu Oct 11 02:27:46 2018 +0000
Revision:
3:f3764f852aa8
Parent:
0:8fdf9a60065b 
Nucreo 446 + SSD1331 test version;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /*
kadonotakashi 0:8fdf9a60065b 2 * Copyright (c) 2015-2016, ARM Limited, All Rights Reserved
kadonotakashi 0:8fdf9a60065b 3 * SPDX-License-Identifier: Apache-2.0
kadonotakashi 0:8fdf9a60065b 4 *
kadonotakashi 0:8fdf9a60065b 5 * Licensed under the Apache License, Version 2.0 (the "License"); you may
kadonotakashi 0:8fdf9a60065b 6 * not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 7 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 8 *
kadonotakashi 0:8fdf9a60065b 9 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 10 *
kadonotakashi 0:8fdf9a60065b 11 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 12 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
kadonotakashi 0:8fdf9a60065b 13 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 14 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 15 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 16 */
kadonotakashi 0:8fdf9a60065b 17
kadonotakashi 0:8fdf9a60065b 18 /* Declare __STDC_LIMIT_MACROS so stdint.h defines UINT32_MAX when using C++ */
kadonotakashi 0:8fdf9a60065b 19 #define __STDC_LIMIT_MACROS
kadonotakashi 0:8fdf9a60065b 20 #include "hal/critical_section_api.h"
kadonotakashi 0:8fdf9a60065b 21
kadonotakashi 0:8fdf9a60065b 22 #include "cmsis.h"
kadonotakashi 0:8fdf9a60065b 23 #include "platform/mbed_assert.h"
kadonotakashi 0:8fdf9a60065b 24 #include "platform/mbed_critical.h"
kadonotakashi 0:8fdf9a60065b 25 #include "platform/mbed_toolchain.h"
kadonotakashi 0:8fdf9a60065b 26
kadonotakashi 0:8fdf9a60065b 27 // if __EXCLUSIVE_ACCESS rtx macro not defined, we need to get this via own-set architecture macros
kadonotakashi 0:8fdf9a60065b 28 #ifndef MBED_EXCLUSIVE_ACCESS
kadonotakashi 0:8fdf9a60065b 29 #ifndef __EXCLUSIVE_ACCESS
kadonotakashi 0:8fdf9a60065b 30 #if ((__ARM_ARCH_7M__ == 1U) || \
kadonotakashi 0:8fdf9a60065b 31 (__ARM_ARCH_7EM__ == 1U) || \
kadonotakashi 0:8fdf9a60065b 32 (__ARM_ARCH_8M_BASE__ == 1U) || \
kadonotakashi 0:8fdf9a60065b 33 (__ARM_ARCH_8M_MAIN__ == 1U)) || \
kadonotakashi 0:8fdf9a60065b 34 (__ARM_ARCH_7A__ == 1U)
kadonotakashi 0:8fdf9a60065b 35 #define MBED_EXCLUSIVE_ACCESS 1U
kadonotakashi 0:8fdf9a60065b 36 #elif (__ARM_ARCH_6M__ == 1U)
kadonotakashi 0:8fdf9a60065b 37 #define MBED_EXCLUSIVE_ACCESS 0U
kadonotakashi 0:8fdf9a60065b 38 #else
kadonotakashi 0:8fdf9a60065b 39 #error "Unknown architecture for exclusive access"
kadonotakashi 0:8fdf9a60065b 40 #endif
kadonotakashi 0:8fdf9a60065b 41 #else
kadonotakashi 0:8fdf9a60065b 42 #define MBED_EXCLUSIVE_ACCESS __EXCLUSIVE_ACCESS
kadonotakashi 0:8fdf9a60065b 43 #endif
kadonotakashi 0:8fdf9a60065b 44 #endif
kadonotakashi 0:8fdf9a60065b 45
kadonotakashi 0:8fdf9a60065b 46 static volatile uint32_t critical_section_reentrancy_counter = 0;
kadonotakashi 0:8fdf9a60065b 47
kadonotakashi 0:8fdf9a60065b 48 bool core_util_are_interrupts_enabled(void)
kadonotakashi 0:8fdf9a60065b 49 {
kadonotakashi 0:8fdf9a60065b 50 #if defined(__CORTEX_A9)
kadonotakashi 0:8fdf9a60065b 51 return ((__get_CPSR() & 0x80) == 0);
kadonotakashi 0:8fdf9a60065b 52 #else
kadonotakashi 0:8fdf9a60065b 53 return ((__get_PRIMASK() & 0x1) == 0);
kadonotakashi 0:8fdf9a60065b 54 #endif
kadonotakashi 0:8fdf9a60065b 55 }
kadonotakashi 0:8fdf9a60065b 56
kadonotakashi 0:8fdf9a60065b 57 bool core_util_is_isr_active(void)
kadonotakashi 0:8fdf9a60065b 58 {
kadonotakashi 0:8fdf9a60065b 59 #if defined(__CORTEX_A9)
kadonotakashi 0:8fdf9a60065b 60 switch (__get_CPSR() & 0x1FU) {
kadonotakashi 0:8fdf9a60065b 61 case CPSR_M_USR:
kadonotakashi 0:8fdf9a60065b 62 case CPSR_M_SYS:
kadonotakashi 0:8fdf9a60065b 63 return false;
kadonotakashi 0:8fdf9a60065b 64 case CPSR_M_SVC:
kadonotakashi 0:8fdf9a60065b 65 default:
kadonotakashi 0:8fdf9a60065b 66 return true;
kadonotakashi 0:8fdf9a60065b 67 }
kadonotakashi 0:8fdf9a60065b 68 #else
kadonotakashi 0:8fdf9a60065b 69 return (__get_IPSR() != 0U);
kadonotakashi 0:8fdf9a60065b 70 #endif
kadonotakashi 0:8fdf9a60065b 71 }
kadonotakashi 0:8fdf9a60065b 72
kadonotakashi 0:8fdf9a60065b 73 bool core_util_in_critical_section(void)
kadonotakashi 0:8fdf9a60065b 74 {
kadonotakashi 0:8fdf9a60065b 75 return hal_in_critical_section();
kadonotakashi 0:8fdf9a60065b 76 }
kadonotakashi 0:8fdf9a60065b 77
kadonotakashi 0:8fdf9a60065b 78 void core_util_critical_section_enter(void)
kadonotakashi 0:8fdf9a60065b 79 {
kadonotakashi 0:8fdf9a60065b 80 // If the reentrancy counter overflows something has gone badly wrong.
kadonotakashi 0:8fdf9a60065b 81 MBED_ASSERT(critical_section_reentrancy_counter < UINT32_MAX);
kadonotakashi 0:8fdf9a60065b 82
kadonotakashi 0:8fdf9a60065b 83 hal_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 84
kadonotakashi 0:8fdf9a60065b 85 ++critical_section_reentrancy_counter;
kadonotakashi 0:8fdf9a60065b 86 }
kadonotakashi 0:8fdf9a60065b 87
kadonotakashi 0:8fdf9a60065b 88 void core_util_critical_section_exit(void)
kadonotakashi 0:8fdf9a60065b 89 {
kadonotakashi 0:8fdf9a60065b 90
kadonotakashi 0:8fdf9a60065b 91 // If critical_section_enter has not previously been called, do nothing
kadonotakashi 0:8fdf9a60065b 92 if (critical_section_reentrancy_counter == 0) {
kadonotakashi 0:8fdf9a60065b 93 return;
kadonotakashi 0:8fdf9a60065b 94 }
kadonotakashi 0:8fdf9a60065b 95
kadonotakashi 0:8fdf9a60065b 96 --critical_section_reentrancy_counter;
kadonotakashi 0:8fdf9a60065b 97
kadonotakashi 0:8fdf9a60065b 98 if (critical_section_reentrancy_counter == 0) {
kadonotakashi 0:8fdf9a60065b 99 hal_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 100 }
kadonotakashi 0:8fdf9a60065b 101 }
kadonotakashi 0:8fdf9a60065b 102
kadonotakashi 0:8fdf9a60065b 103 #if MBED_EXCLUSIVE_ACCESS
kadonotakashi 0:8fdf9a60065b 104
kadonotakashi 0:8fdf9a60065b 105 /* Supress __ldrex and __strex deprecated warnings - "#3731-D: intrinsic is deprecated" */
kadonotakashi 0:8fdf9a60065b 106 #if defined (__CC_ARM)
kadonotakashi 0:8fdf9a60065b 107 #pragma diag_suppress 3731
kadonotakashi 0:8fdf9a60065b 108 #endif
kadonotakashi 0:8fdf9a60065b 109
kadonotakashi 0:8fdf9a60065b 110 bool core_util_atomic_cas_u8(volatile uint8_t *ptr, uint8_t *expectedCurrentValue, uint8_t desiredValue)
kadonotakashi 0:8fdf9a60065b 111 {
kadonotakashi 0:8fdf9a60065b 112 do {
kadonotakashi 0:8fdf9a60065b 113 uint8_t currentValue = __LDREXB(ptr);
kadonotakashi 0:8fdf9a60065b 114 if (currentValue != *expectedCurrentValue) {
kadonotakashi 0:8fdf9a60065b 115 *expectedCurrentValue = currentValue;
kadonotakashi 0:8fdf9a60065b 116 __CLREX();
kadonotakashi 0:8fdf9a60065b 117 return false;
kadonotakashi 0:8fdf9a60065b 118 }
kadonotakashi 0:8fdf9a60065b 119 } while (__STREXB(desiredValue, ptr));
kadonotakashi 0:8fdf9a60065b 120 return true;
kadonotakashi 0:8fdf9a60065b 121 }
kadonotakashi 0:8fdf9a60065b 122
kadonotakashi 0:8fdf9a60065b 123 bool core_util_atomic_cas_u16(volatile uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue)
kadonotakashi 0:8fdf9a60065b 124 {
kadonotakashi 0:8fdf9a60065b 125 do {
kadonotakashi 0:8fdf9a60065b 126 uint16_t currentValue = __LDREXH(ptr);
kadonotakashi 0:8fdf9a60065b 127 if (currentValue != *expectedCurrentValue) {
kadonotakashi 0:8fdf9a60065b 128 *expectedCurrentValue = currentValue;
kadonotakashi 0:8fdf9a60065b 129 __CLREX();
kadonotakashi 0:8fdf9a60065b 130 return false;
kadonotakashi 0:8fdf9a60065b 131 }
kadonotakashi 0:8fdf9a60065b 132 } while (__STREXH(desiredValue, ptr));
kadonotakashi 0:8fdf9a60065b 133 return true;
kadonotakashi 0:8fdf9a60065b 134 }
kadonotakashi 0:8fdf9a60065b 135
kadonotakashi 0:8fdf9a60065b 136
kadonotakashi 0:8fdf9a60065b 137 bool core_util_atomic_cas_u32(volatile uint32_t *ptr, uint32_t *expectedCurrentValue, uint32_t desiredValue)
kadonotakashi 0:8fdf9a60065b 138 {
kadonotakashi 0:8fdf9a60065b 139 do {
kadonotakashi 0:8fdf9a60065b 140 uint32_t currentValue = __LDREXW(ptr);
kadonotakashi 0:8fdf9a60065b 141 if (currentValue != *expectedCurrentValue) {
kadonotakashi 0:8fdf9a60065b 142 *expectedCurrentValue = currentValue;
kadonotakashi 0:8fdf9a60065b 143 __CLREX();
kadonotakashi 0:8fdf9a60065b 144 return false;
kadonotakashi 0:8fdf9a60065b 145 }
kadonotakashi 0:8fdf9a60065b 146 } while (__STREXW(desiredValue, ptr));
kadonotakashi 0:8fdf9a60065b 147 return true;
kadonotakashi 0:8fdf9a60065b 148 }
kadonotakashi 0:8fdf9a60065b 149
kadonotakashi 0:8fdf9a60065b 150 uint8_t core_util_atomic_incr_u8(volatile uint8_t *valuePtr, uint8_t delta)
kadonotakashi 0:8fdf9a60065b 151 {
kadonotakashi 0:8fdf9a60065b 152 uint8_t newValue;
kadonotakashi 0:8fdf9a60065b 153 do {
kadonotakashi 0:8fdf9a60065b 154 newValue = __LDREXB(valuePtr) + delta;
kadonotakashi 0:8fdf9a60065b 155 } while (__STREXB(newValue, valuePtr));
kadonotakashi 0:8fdf9a60065b 156 return newValue;
kadonotakashi 0:8fdf9a60065b 157 }
kadonotakashi 0:8fdf9a60065b 158
kadonotakashi 0:8fdf9a60065b 159 uint16_t core_util_atomic_incr_u16(volatile uint16_t *valuePtr, uint16_t delta)
kadonotakashi 0:8fdf9a60065b 160 {
kadonotakashi 0:8fdf9a60065b 161 uint16_t newValue;
kadonotakashi 0:8fdf9a60065b 162 do {
kadonotakashi 0:8fdf9a60065b 163 newValue = __LDREXH(valuePtr) + delta;
kadonotakashi 0:8fdf9a60065b 164 } while (__STREXH(newValue, valuePtr));
kadonotakashi 0:8fdf9a60065b 165 return newValue;
kadonotakashi 0:8fdf9a60065b 166 }
kadonotakashi 0:8fdf9a60065b 167
kadonotakashi 0:8fdf9a60065b 168 uint32_t core_util_atomic_incr_u32(volatile uint32_t *valuePtr, uint32_t delta)
kadonotakashi 0:8fdf9a60065b 169 {
kadonotakashi 0:8fdf9a60065b 170 uint32_t newValue;
kadonotakashi 0:8fdf9a60065b 171 do {
kadonotakashi 0:8fdf9a60065b 172 newValue = __LDREXW(valuePtr) + delta;
kadonotakashi 0:8fdf9a60065b 173 } while (__STREXW(newValue, valuePtr));
kadonotakashi 0:8fdf9a60065b 174 return newValue;
kadonotakashi 0:8fdf9a60065b 175 }
kadonotakashi 0:8fdf9a60065b 176
kadonotakashi 0:8fdf9a60065b 177
kadonotakashi 0:8fdf9a60065b 178 uint8_t core_util_atomic_decr_u8(volatile uint8_t *valuePtr, uint8_t delta)
kadonotakashi 0:8fdf9a60065b 179 {
kadonotakashi 0:8fdf9a60065b 180 uint8_t newValue;
kadonotakashi 0:8fdf9a60065b 181 do {
kadonotakashi 0:8fdf9a60065b 182 newValue = __LDREXB(valuePtr) - delta;
kadonotakashi 0:8fdf9a60065b 183 } while (__STREXB(newValue, valuePtr));
kadonotakashi 0:8fdf9a60065b 184 return newValue;
kadonotakashi 0:8fdf9a60065b 185 }
kadonotakashi 0:8fdf9a60065b 186
kadonotakashi 0:8fdf9a60065b 187 uint16_t core_util_atomic_decr_u16(volatile uint16_t *valuePtr, uint16_t delta)
kadonotakashi 0:8fdf9a60065b 188 {
kadonotakashi 0:8fdf9a60065b 189 uint16_t newValue;
kadonotakashi 0:8fdf9a60065b 190 do {
kadonotakashi 0:8fdf9a60065b 191 newValue = __LDREXH(valuePtr) - delta;
kadonotakashi 0:8fdf9a60065b 192 } while (__STREXH(newValue, valuePtr));
kadonotakashi 0:8fdf9a60065b 193 return newValue;
kadonotakashi 0:8fdf9a60065b 194 }
kadonotakashi 0:8fdf9a60065b 195
kadonotakashi 0:8fdf9a60065b 196 uint32_t core_util_atomic_decr_u32(volatile uint32_t *valuePtr, uint32_t delta)
kadonotakashi 0:8fdf9a60065b 197 {
kadonotakashi 0:8fdf9a60065b 198 uint32_t newValue;
kadonotakashi 0:8fdf9a60065b 199 do {
kadonotakashi 0:8fdf9a60065b 200 newValue = __LDREXW(valuePtr) - delta;
kadonotakashi 0:8fdf9a60065b 201 } while (__STREXW(newValue, valuePtr));
kadonotakashi 0:8fdf9a60065b 202 return newValue;
kadonotakashi 0:8fdf9a60065b 203 }
kadonotakashi 0:8fdf9a60065b 204
kadonotakashi 0:8fdf9a60065b 205 #else
kadonotakashi 0:8fdf9a60065b 206
kadonotakashi 0:8fdf9a60065b 207 bool core_util_atomic_cas_u8(volatile uint8_t *ptr, uint8_t *expectedCurrentValue, uint8_t desiredValue)
kadonotakashi 0:8fdf9a60065b 208 {
kadonotakashi 0:8fdf9a60065b 209 bool success;
kadonotakashi 0:8fdf9a60065b 210 uint8_t currentValue;
kadonotakashi 0:8fdf9a60065b 211 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 212 currentValue = *ptr;
kadonotakashi 0:8fdf9a60065b 213 if (currentValue == *expectedCurrentValue) {
kadonotakashi 0:8fdf9a60065b 214 *ptr = desiredValue;
kadonotakashi 0:8fdf9a60065b 215 success = true;
kadonotakashi 0:8fdf9a60065b 216 } else {
kadonotakashi 0:8fdf9a60065b 217 *expectedCurrentValue = currentValue;
kadonotakashi 0:8fdf9a60065b 218 success = false;
kadonotakashi 0:8fdf9a60065b 219 }
kadonotakashi 0:8fdf9a60065b 220 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 221 return success;
kadonotakashi 0:8fdf9a60065b 222 }
kadonotakashi 0:8fdf9a60065b 223
kadonotakashi 0:8fdf9a60065b 224 bool core_util_atomic_cas_u16(volatile uint16_t *ptr, uint16_t *expectedCurrentValue, uint16_t desiredValue)
kadonotakashi 0:8fdf9a60065b 225 {
kadonotakashi 0:8fdf9a60065b 226 bool success;
kadonotakashi 0:8fdf9a60065b 227 uint16_t currentValue;
kadonotakashi 0:8fdf9a60065b 228 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 229 currentValue = *ptr;
kadonotakashi 0:8fdf9a60065b 230 if (currentValue == *expectedCurrentValue) {
kadonotakashi 0:8fdf9a60065b 231 *ptr = desiredValue;
kadonotakashi 0:8fdf9a60065b 232 success = true;
kadonotakashi 0:8fdf9a60065b 233 } else {
kadonotakashi 0:8fdf9a60065b 234 *expectedCurrentValue = currentValue;
kadonotakashi 0:8fdf9a60065b 235 success = false;
kadonotakashi 0:8fdf9a60065b 236 }
kadonotakashi 0:8fdf9a60065b 237 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 238 return success;
kadonotakashi 0:8fdf9a60065b 239 }
kadonotakashi 0:8fdf9a60065b 240
kadonotakashi 0:8fdf9a60065b 241
kadonotakashi 0:8fdf9a60065b 242 bool core_util_atomic_cas_u32(volatile uint32_t *ptr, uint32_t *expectedCurrentValue, uint32_t desiredValue)
kadonotakashi 0:8fdf9a60065b 243 {
kadonotakashi 0:8fdf9a60065b 244 bool success;
kadonotakashi 0:8fdf9a60065b 245 uint32_t currentValue;
kadonotakashi 0:8fdf9a60065b 246 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 247 currentValue = *ptr;
kadonotakashi 0:8fdf9a60065b 248 if (currentValue == *expectedCurrentValue) {
kadonotakashi 0:8fdf9a60065b 249 *ptr = desiredValue;
kadonotakashi 0:8fdf9a60065b 250 success = true;
kadonotakashi 0:8fdf9a60065b 251 } else {
kadonotakashi 0:8fdf9a60065b 252 *expectedCurrentValue = currentValue;
kadonotakashi 0:8fdf9a60065b 253 success = false;
kadonotakashi 0:8fdf9a60065b 254 }
kadonotakashi 0:8fdf9a60065b 255 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 256 return success;
kadonotakashi 0:8fdf9a60065b 257 }
kadonotakashi 0:8fdf9a60065b 258
kadonotakashi 0:8fdf9a60065b 259
kadonotakashi 0:8fdf9a60065b 260 uint8_t core_util_atomic_incr_u8(volatile uint8_t *valuePtr, uint8_t delta)
kadonotakashi 0:8fdf9a60065b 261 {
kadonotakashi 0:8fdf9a60065b 262 uint8_t newValue;
kadonotakashi 0:8fdf9a60065b 263 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 264 newValue = *valuePtr + delta;
kadonotakashi 0:8fdf9a60065b 265 *valuePtr = newValue;
kadonotakashi 0:8fdf9a60065b 266 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 267 return newValue;
kadonotakashi 0:8fdf9a60065b 268 }
kadonotakashi 0:8fdf9a60065b 269
kadonotakashi 0:8fdf9a60065b 270 uint16_t core_util_atomic_incr_u16(volatile uint16_t *valuePtr, uint16_t delta)
kadonotakashi 0:8fdf9a60065b 271 {
kadonotakashi 0:8fdf9a60065b 272 uint16_t newValue;
kadonotakashi 0:8fdf9a60065b 273 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 274 newValue = *valuePtr + delta;
kadonotakashi 0:8fdf9a60065b 275 *valuePtr = newValue;
kadonotakashi 0:8fdf9a60065b 276 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 277 return newValue;
kadonotakashi 0:8fdf9a60065b 278 }
kadonotakashi 0:8fdf9a60065b 279
kadonotakashi 0:8fdf9a60065b 280 uint32_t core_util_atomic_incr_u32(volatile uint32_t *valuePtr, uint32_t delta)
kadonotakashi 0:8fdf9a60065b 281 {
kadonotakashi 0:8fdf9a60065b 282 uint32_t newValue;
kadonotakashi 0:8fdf9a60065b 283 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 284 newValue = *valuePtr + delta;
kadonotakashi 0:8fdf9a60065b 285 *valuePtr = newValue;
kadonotakashi 0:8fdf9a60065b 286 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 287 return newValue;
kadonotakashi 0:8fdf9a60065b 288 }
kadonotakashi 0:8fdf9a60065b 289
kadonotakashi 0:8fdf9a60065b 290
kadonotakashi 0:8fdf9a60065b 291 uint8_t core_util_atomic_decr_u8(volatile uint8_t *valuePtr, uint8_t delta)
kadonotakashi 0:8fdf9a60065b 292 {
kadonotakashi 0:8fdf9a60065b 293 uint8_t newValue;
kadonotakashi 0:8fdf9a60065b 294 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 295 newValue = *valuePtr - delta;
kadonotakashi 0:8fdf9a60065b 296 *valuePtr = newValue;
kadonotakashi 0:8fdf9a60065b 297 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 298 return newValue;
kadonotakashi 0:8fdf9a60065b 299 }
kadonotakashi 0:8fdf9a60065b 300
kadonotakashi 0:8fdf9a60065b 301 uint16_t core_util_atomic_decr_u16(volatile uint16_t *valuePtr, uint16_t delta)
kadonotakashi 0:8fdf9a60065b 302 {
kadonotakashi 0:8fdf9a60065b 303 uint16_t newValue;
kadonotakashi 0:8fdf9a60065b 304 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 305 newValue = *valuePtr - delta;
kadonotakashi 0:8fdf9a60065b 306 *valuePtr = newValue;
kadonotakashi 0:8fdf9a60065b 307 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 308 return newValue;
kadonotakashi 0:8fdf9a60065b 309 }
kadonotakashi 0:8fdf9a60065b 310
kadonotakashi 0:8fdf9a60065b 311 uint32_t core_util_atomic_decr_u32(volatile uint32_t *valuePtr, uint32_t delta)
kadonotakashi 0:8fdf9a60065b 312 {
kadonotakashi 0:8fdf9a60065b 313 uint32_t newValue;
kadonotakashi 0:8fdf9a60065b 314 core_util_critical_section_enter();
kadonotakashi 0:8fdf9a60065b 315 newValue = *valuePtr - delta;
kadonotakashi 0:8fdf9a60065b 316 *valuePtr = newValue;
kadonotakashi 0:8fdf9a60065b 317 core_util_critical_section_exit();
kadonotakashi 0:8fdf9a60065b 318 return newValue;
kadonotakashi 0:8fdf9a60065b 319 }
kadonotakashi 0:8fdf9a60065b 320
kadonotakashi 0:8fdf9a60065b 321 #endif
kadonotakashi 0:8fdf9a60065b 322
kadonotakashi 0:8fdf9a60065b 323
kadonotakashi 0:8fdf9a60065b 324 bool core_util_atomic_cas_ptr(void *volatile *ptr, void **expectedCurrentValue, void *desiredValue)
kadonotakashi 0:8fdf9a60065b 325 {
kadonotakashi 0:8fdf9a60065b 326 return core_util_atomic_cas_u32(
kadonotakashi 0:8fdf9a60065b 327 (volatile uint32_t *)ptr,
kadonotakashi 0:8fdf9a60065b 328 (uint32_t *)expectedCurrentValue,
kadonotakashi 0:8fdf9a60065b 329 (uint32_t)desiredValue);
kadonotakashi 0:8fdf9a60065b 330 }
kadonotakashi 0:8fdf9a60065b 331
kadonotakashi 0:8fdf9a60065b 332 void *core_util_atomic_incr_ptr(void *volatile *valuePtr, ptrdiff_t delta)
kadonotakashi 0:8fdf9a60065b 333 {
kadonotakashi 0:8fdf9a60065b 334 return (void *)core_util_atomic_incr_u32((volatile uint32_t *)valuePtr, (uint32_t)delta);
kadonotakashi 0:8fdf9a60065b 335 }
kadonotakashi 0:8fdf9a60065b 336
kadonotakashi 0:8fdf9a60065b 337 void *core_util_atomic_decr_ptr(void *volatile *valuePtr, ptrdiff_t delta)
kadonotakashi 0:8fdf9a60065b 338 {
kadonotakashi 0:8fdf9a60065b 339 return (void *)core_util_atomic_decr_u32((volatile uint32_t *)valuePtr, (uint32_t)delta);
kadonotakashi 0:8fdf9a60065b 340 }
kadonotakashi 0:8fdf9a60065b 341