128 lines
4.1 KiB
C
128 lines
4.1 KiB
C
/**
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* Copyright (c) 2014 - 2017, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "app_util_platform.h"
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#ifdef SOFTDEVICE_PRESENT
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/* Global nvic state instance, required by nrf_nvic.h */
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nrf_nvic_state_t nrf_nvic_state;
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#endif
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static uint32_t m_in_critical_region = 0;
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void app_util_disable_irq(void)
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{
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__disable_irq();
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m_in_critical_region++;
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}
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void app_util_enable_irq(void)
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{
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m_in_critical_region--;
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if (m_in_critical_region == 0)
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{
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__enable_irq();
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}
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}
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void app_util_critical_region_enter(uint8_t *p_nested)
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{
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#if __CORTEX_M == (0x04U)
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ASSERT(APP_LEVEL_PRIVILEGED == privilege_level_get())
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#endif
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#if defined(SOFTDEVICE_PRESENT)
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/* return value can be safely ignored */
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(void) sd_nvic_critical_region_enter(p_nested);
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#else
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app_util_disable_irq();
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#endif
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}
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void app_util_critical_region_exit(uint8_t nested)
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{
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#if __CORTEX_M == (0x04U)
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ASSERT(APP_LEVEL_PRIVILEGED == privilege_level_get())
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#endif
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#if defined(SOFTDEVICE_PRESENT)
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/* return value can be safely ignored */
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(void) sd_nvic_critical_region_exit(nested);
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#else
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app_util_enable_irq();
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#endif
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}
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uint8_t privilege_level_get(void)
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{
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#if __CORTEX_M == (0x00U) || defined(_WIN32) || defined(__unix) || defined(__APPLE__)
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/* the Cortex-M0 has no concept of privilege */
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return APP_LEVEL_PRIVILEGED;
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#elif __CORTEX_M == (0x04U)
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uint32_t isr_vector_num = __get_IPSR() & IPSR_ISR_Msk ;
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if (0 == isr_vector_num)
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{
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/* Thread Mode, check nPRIV */
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int32_t control = __get_CONTROL();
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return control & CONTROL_nPRIV_Msk ? APP_LEVEL_UNPRIVILEGED : APP_LEVEL_PRIVILEGED;
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}
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else
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{
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/* Handler Mode, always privileged */
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return APP_LEVEL_PRIVILEGED;
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}
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#endif
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}
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uint8_t current_int_priority_get(void)
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{
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uint32_t isr_vector_num = __get_IPSR() & IPSR_ISR_Msk ;
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if (isr_vector_num > 0)
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{
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int32_t irq_type = ((int32_t)isr_vector_num - EXTERNAL_INT_VECTOR_OFFSET);
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return (NVIC_GetPriority((IRQn_Type)irq_type) & 0xFF);
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}
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else
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{
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return APP_IRQ_PRIORITY_THREAD;
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}
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}
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