209 lines
5.3 KiB
C
209 lines
5.3 KiB
C
/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
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*
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* The information contained herein is property of Nordic Semiconductor ASA.
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* Terms and conditions of usage are described in detail in NORDIC
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* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
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*
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* Licensees are granted free, non-transferable use of the information. NO
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* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
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* the file.
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*
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*/
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#include <stddef.h>
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#include "nrf_drv_common.h"
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#include "nrf_assert.h"
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#include "app_util_platform.h"
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#ifdef SOFTDEVICE_PRESENT
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#include "nrf_soc.h"
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#endif
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#if PERIPHERAL_RESOURCE_SHARING_ENABLED
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typedef struct {
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nrf_drv_irq_handler_t handler;
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bool acquired;
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} shared_resource_t;
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// SPIM0, SPIS0, SPI0, TWIM0, TWIS0, TWI0
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#if (SPI0_ENABLED || SPIS0_ENABLED || TWI0_ENABLED || TWIS0_ENABLED)
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#define SERIAL_BOX_0_IN_USE
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// [this checking may need a different form in unit tests, hence macro]
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#ifndef IS_SERIAL_BOX_0
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#define IS_SERIAL_BOX_0(p_per_base) (p_per_base == NRF_SPI0)
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#endif
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static shared_resource_t m_serial_box_0 = { .acquired = false };
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void SPI0_TWI0_IRQHandler(void)
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{
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ASSERT(m_serial_box_0.handler);
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m_serial_box_0.handler();
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}
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#endif // (SPI0_ENABLED || SPIS0_ENABLED || TWI0_ENABLED || TWIS0_ENABLED)
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// SPIM1, SPIS1, SPI1, TWIM1, TWIS1, TWI1
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#if (SPI1_ENABLED || SPIS1_ENABLED || TWI1_ENABLED || TWIS1_ENABLED)
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#define SERIAL_BOX_1_IN_USE
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// [this checking may need a different form in unit tests, hence macro]
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#ifndef IS_SERIAL_BOX_1
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#define IS_SERIAL_BOX_1(p_per_base) (p_per_base == NRF_SPI1)
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#endif
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static shared_resource_t m_serial_box_1 = { .acquired = false };
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void SPI1_TWI1_IRQHandler(void)
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{
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ASSERT(m_serial_box_1.handler);
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m_serial_box_1.handler();
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}
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#endif // (SPI1_ENABLED || SPIS1_ENABLED || TWI1_ENABLED || TWIS1_ENABLED)
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// SPIM2, SPIS2, SPI2
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#if (SPI2_ENABLED || SPIS2_ENABLED)
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#define SERIAL_BOX_2_IN_USE
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// [this checking may need a different form in unit tests, hence macro]
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#ifndef IS_SERIAL_BOX_2
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#define IS_SERIAL_BOX_2(p_per_base) (p_per_base == NRF_SPI2)
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#endif
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static shared_resource_t m_serial_box_2 = { .acquired = false };
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void SPIM2_SPIS2_SPI2_IRQHandler(void)
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{
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ASSERT(m_serial_box_2.handler);
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m_serial_box_2.handler();
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}
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#endif // (SPI2_ENABLED || SPIS2_ENABLED)
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// COMP, LPCOMP
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#if (COMP_ENABLED || LPCOMP_ENABLED)
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#define COMP_LPCOMP_IN_USE
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#ifndef IS_COMP_LPCOMP
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#define IS_COMP_LPCOMP(p_per_base) ((p_per_base) == NRF_LPCOMP)
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#endif
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static shared_resource_t m_comp_lpcomp = { .acquired = false };
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void LPCOMP_IRQHandler(void)
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{
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ASSERT(m_comp_lpcomp.handler);
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m_comp_lpcomp.handler();
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}
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#endif // (COMP_ENABLED || LPCOMP_ENABLED)
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#if defined(SERIAL_BOX_0_IN_USE) || \
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defined(SERIAL_BOX_1_IN_USE) || \
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defined(SERIAL_BOX_2_IN_USE) || \
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defined(COMP_LPCOMP_IN_USE)
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static ret_code_t acquire_shared_resource(shared_resource_t * p_resource,
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nrf_drv_irq_handler_t handler)
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{
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bool busy = false;
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CRITICAL_REGION_ENTER();
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if (p_resource->acquired)
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{
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busy = true;
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}
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else
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{
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p_resource->acquired = true;
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}
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CRITICAL_REGION_EXIT();
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if (busy)
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{
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return NRF_ERROR_BUSY;
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}
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p_resource->handler = handler;
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return NRF_SUCCESS;
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}
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#endif
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ret_code_t nrf_drv_common_per_res_acquire(void const * p_per_base,
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nrf_drv_irq_handler_t handler)
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{
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#ifdef SERIAL_BOX_0_IN_USE
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if (IS_SERIAL_BOX_0(p_per_base))
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{
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return acquire_shared_resource(&m_serial_box_0, handler);
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}
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#endif
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#ifdef SERIAL_BOX_1_IN_USE
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if (IS_SERIAL_BOX_1(p_per_base))
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{
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return acquire_shared_resource(&m_serial_box_1, handler);
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}
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#endif
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#ifdef SERIAL_BOX_2_IN_USE
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if (IS_SERIAL_BOX_2(p_per_base))
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{
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return acquire_shared_resource(&m_serial_box_2, handler);
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}
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#endif
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#ifdef COMP_LPCOMP_IN_USE
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if (IS_COMP_LPCOMP(p_per_base))
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{
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return acquire_shared_resource(&m_comp_lpcomp, handler);
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}
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#endif
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return NRF_ERROR_INVALID_PARAM;
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}
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void nrf_drv_common_per_res_release(void const * p_per_base)
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{
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#ifdef SERIAL_BOX_0_IN_USE
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if (IS_SERIAL_BOX_0(p_per_base))
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{
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m_serial_box_0.acquired = false;
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}
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else
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#endif
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#ifdef SERIAL_BOX_1_IN_USE
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if (IS_SERIAL_BOX_1(p_per_base))
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{
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m_serial_box_1.acquired = false;
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}
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else
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#endif
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#ifdef SERIAL_BOX_2_IN_USE
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if (IS_SERIAL_BOX_2(p_per_base))
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{
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m_serial_box_2.acquired = false;
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}
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else
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#endif
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#ifdef COMP_LPCOMP_IN_USE
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if (IS_COMP_LPCOMP(p_per_base))
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{
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m_comp_lpcomp.acquired = false;
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}
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else
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#endif
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{}
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}
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#endif // PERIPHERAL_RESOURCE_SHARING_ENABLED
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void nrf_drv_common_irq_enable(IRQn_Type IRQn, uint8_t priority)
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{
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#ifdef SOFTDEVICE_PRESENT
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ASSERT((priority == APP_IRQ_PRIORITY_LOW) || (priority == APP_IRQ_PRIORITY_HIGH));
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#endif
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NVIC_SetPriority(IRQn, priority);
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NVIC_ClearPendingIRQ(IRQn);
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NVIC_EnableIRQ(IRQn);
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}
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