初始版本

components/drivers_nrf/nrf_soc_nosd/nrf_nvic.c

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+/**
+ * Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ *
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ *
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#include <stdlib.h>
+#include "nrf_soc.h"
+#include "nrf_error.h"
+
+static uint8_t m_in_critical_region = 0;
+
+uint32_t sd_nvic_EnableIRQ(IRQn_Type IRQn)
+{
+    NVIC_EnableIRQ(IRQn);
+    return NRF_SUCCESS;
+}
+
+uint32_t sd_nvic_DisableIRQ(IRQn_Type IRQn)
+{
+    NVIC_DisableIRQ(IRQn);
+    return NRF_SUCCESS;
+}
+
+uint32_t sd_nvic_GetPendingIRQ(IRQn_Type IRQn, uint32_t * p_pending_irq)
+{
+    if (p_pending_irq != NULL)
+    {
+        *p_pending_irq = NVIC_GetPendingIRQ(IRQn);
+        return NRF_SUCCESS;
+    }
+    return NRF_ERROR_NULL;
+}
+
+uint32_t sd_nvic_SetPendingIRQ(IRQn_Type IRQn)
+{
+    NVIC_SetPendingIRQ(IRQn);
+    return NRF_SUCCESS;
+}
+
+uint32_t sd_nvic_ClearPendingIRQ(IRQn_Type IRQn)
+{
+    NVIC_ClearPendingIRQ(IRQn);
+    return NRF_SUCCESS;
+}
+
+uint32_t sd_nvic_SetPriority(IRQn_Type IRQn, uint32_t priority)
+{
+    NVIC_SetPriority(IRQn, priority);
+    return NRF_SUCCESS;
+}
+
+uint32_t sd_nvic_GetPriority(IRQn_Type IRQn, uint32_t * p_priority)
+{
+    if (p_priority != NULL)
+    {
+        *p_priority = NVIC_GetPriority(IRQn);
+        return NRF_SUCCESS;
+    }
+
+    return NRF_ERROR_NULL;
+}
+
+uint32_t sd_nvic_SystemReset(void)
+{
+    NVIC_SystemReset();
+    return NRF_SUCCESS;
+}
+
+uint32_t sd_nvic_critical_region_enter(uint8_t * p_is_nested_critical_region)
+{
+    __disable_irq();
+
+    *p_is_nested_critical_region = (m_in_critical_region != 0);
+    m_in_critical_region++;
+
+    return NRF_SUCCESS;
+}
+
+uint32_t sd_nvic_critical_region_exit(uint8_t is_nested_critical_region)
+{
+    m_in_critical_region--;
+
+    if (is_nested_critical_region == 0)
+    {
+        m_in_critical_region = 0;
+        __enable_irq();
+    }
+    return NRF_SUCCESS;
+}