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Diffstat (limited to 'softdevice/s132/headers/nrf_nvic.h')
| -rw-r--r-- | softdevice/s132/headers/nrf_nvic.h | 491 |
1 files changed, 491 insertions, 0 deletions
diff --git a/softdevice/s132/headers/nrf_nvic.h b/softdevice/s132/headers/nrf_nvic.h new file mode 100644 index 0000000..1f79cc3 --- /dev/null +++ b/softdevice/s132/headers/nrf_nvic.h @@ -0,0 +1,491 @@ +/* + * Copyright (c) 2016 - 2018, 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. + */ + +/** + * @defgroup nrf_nvic_api SoftDevice NVIC API + * @{ + * + * @note In order to use this module, the following code has to be added to a .c file: + * \code + * nrf_nvic_state_t nrf_nvic_state = {0}; + * \endcode + * + * @note Definitions and declarations starting with __ (double underscore) in this header file are + * not intended for direct use by the application. + * + * @brief APIs for the accessing NVIC when using a SoftDevice. + * + */ + +#ifndef NRF_NVIC_H__ +#define NRF_NVIC_H__ + +#include <stdint.h> +#include "nrf.h" +#include "nrf_svc.h" +#include "nrf_error.h" +#include "nrf_error_soc.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/**@addtogroup NRF_NVIC_DEFINES Defines + * @{ */ + +/**@defgroup NRF_NVIC_ISER_DEFINES SoftDevice NVIC internal definitions + * @{ */ + +#define __NRF_NVIC_NVMC_IRQn (30) /**< The peripheral ID of the NVMC. IRQ numbers are used to identify peripherals, but the NVMC doesn't have an IRQ number in the MDK. */ + +#define __NRF_NVIC_ISER_COUNT (2) /**< The number of ISER/ICER registers in the NVIC that are used. */ + +/**@brief Interrupt priority levels used by the SoftDevice. */ +#define __NRF_NVIC_SD_IRQ_PRIOS ((uint8_t)( \ + (1U << 0) /**< Priority level high .*/ \ + | (1U << 1) /**< Priority level medium. */ \ + | (1U << 4) /**< Priority level low. */ \ + )) + +/**@brief Interrupt priority levels available to the application. */ +#define __NRF_NVIC_APP_IRQ_PRIOS ((uint8_t)~__NRF_NVIC_SD_IRQ_PRIOS) + +/**@brief Interrupts used by the SoftDevice, with IRQn in the range 0-31. */ +#define __NRF_NVIC_SD_IRQS_0 ((uint32_t)( \ + (1U << POWER_CLOCK_IRQn) \ + | (1U << RADIO_IRQn) \ + | (1U << RTC0_IRQn) \ + | (1U << TIMER0_IRQn) \ + | (1U << RNG_IRQn) \ + | (1U << ECB_IRQn) \ + | (1U << CCM_AAR_IRQn) \ + | (1U << TEMP_IRQn) \ + | (1U << __NRF_NVIC_NVMC_IRQn) \ + | (1U << (uint32_t)SWI5_IRQn) \ + )) + +/**@brief Interrupts used by the SoftDevice, with IRQn in the range 32-63. */ +#define __NRF_NVIC_SD_IRQS_1 ((uint32_t)0) + +/**@brief Interrupts available for to application, with IRQn in the range 0-31. */ +#define __NRF_NVIC_APP_IRQS_0 (~__NRF_NVIC_SD_IRQS_0) + +/**@brief Interrupts available for to application, with IRQn in the range 32-63. */ +#define __NRF_NVIC_APP_IRQS_1 (~__NRF_NVIC_SD_IRQS_1) + +/**@} */ + +/**@} */ + +/**@addtogroup NRF_NVIC_VARIABLES Variables + * @{ */ + +/**@brief Type representing the state struct for the SoftDevice NVIC module. */ +typedef struct +{ + uint32_t volatile __irq_masks[__NRF_NVIC_ISER_COUNT]; /**< IRQs enabled by the application in the NVIC. */ + uint32_t volatile __cr_flag; /**< Non-zero if already in a critical region */ +} nrf_nvic_state_t; + +/**@brief Variable keeping the state for the SoftDevice NVIC module. This must be declared in an + * application source file. */ +extern nrf_nvic_state_t nrf_nvic_state; + +/**@} */ + +/**@addtogroup NRF_NVIC_INTERNAL_FUNCTIONS SoftDevice NVIC internal functions + * @{ */ + +/**@brief Disables IRQ interrupts globally, including the SoftDevice's interrupts. + * + * @retval The value of PRIMASK prior to disabling the interrupts. + */ +__STATIC_INLINE int __sd_nvic_irq_disable(void); + +/**@brief Enables IRQ interrupts globally, including the SoftDevice's interrupts. + */ +__STATIC_INLINE void __sd_nvic_irq_enable(void); + +/**@brief Checks if IRQn is available to application + * @param[in] IRQn IRQ to check + * + * @retval 1 (true) if the IRQ to check is available to the application + */ +__STATIC_INLINE uint32_t __sd_nvic_app_accessible_irq(IRQn_Type IRQn); + +/**@brief Checks if priority is available to application + * @param[in] priority priority to check + * + * @retval 1 (true) if the priority to check is available to the application + */ +__STATIC_INLINE uint32_t __sd_nvic_is_app_accessible_priority(uint32_t priority); + +/**@} */ + +/**@addtogroup NRF_NVIC_FUNCTIONS SoftDevice NVIC public functions + * @{ */ + +/**@brief Enable External Interrupt. + * @note Corresponds to NVIC_EnableIRQ in CMSIS. + * + * @pre IRQn is valid and not reserved by the stack. + * + * @param[in] IRQn See the NVIC_EnableIRQ documentation in CMSIS. + * + * @retval ::NRF_SUCCESS The interrupt was enabled. + * @retval ::NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE The interrupt is not available for the application. + * @retval ::NRF_ERROR_SOC_NVIC_INTERRUPT_PRIORITY_NOT_ALLOWED The interrupt has a priority not available for the application. + */ +__STATIC_INLINE uint32_t sd_nvic_EnableIRQ(IRQn_Type IRQn); + +/**@brief Disable External Interrupt. + * @note Corresponds to NVIC_DisableIRQ in CMSIS. + * + * @pre IRQn is valid and not reserved by the stack. + * + * @param[in] IRQn See the NVIC_DisableIRQ documentation in CMSIS. + * + * @retval ::NRF_SUCCESS The interrupt was disabled. + * @retval ::NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE The interrupt is not available for the application. + */ +__STATIC_INLINE uint32_t sd_nvic_DisableIRQ(IRQn_Type IRQn); + +/**@brief Get Pending Interrupt. + * @note Corresponds to NVIC_GetPendingIRQ in CMSIS. + * + * @pre IRQn is valid and not reserved by the stack. + * + * @param[in] IRQn See the NVIC_GetPendingIRQ documentation in CMSIS. + * @param[out] p_pending_irq Return value from NVIC_GetPendingIRQ. + * + * @retval ::NRF_SUCCESS The interrupt is available for the application. + * @retval ::NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE IRQn is not available for the application. + */ +__STATIC_INLINE uint32_t sd_nvic_GetPendingIRQ(IRQn_Type IRQn, uint32_t * p_pending_irq); + +/**@brief Set Pending Interrupt. + * @note Corresponds to NVIC_SetPendingIRQ in CMSIS. + * + * @pre IRQn is valid and not reserved by the stack. + * + * @param[in] IRQn See the NVIC_SetPendingIRQ documentation in CMSIS. + * + * @retval ::NRF_SUCCESS The interrupt is set pending. + * @retval ::NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE IRQn is not available for the application. + */ +__STATIC_INLINE uint32_t sd_nvic_SetPendingIRQ(IRQn_Type IRQn); + +/**@brief Clear Pending Interrupt. + * @note Corresponds to NVIC_ClearPendingIRQ in CMSIS. + * + * @pre IRQn is valid and not reserved by the stack. + * + * @param[in] IRQn See the NVIC_ClearPendingIRQ documentation in CMSIS. + * + * @retval ::NRF_SUCCESS The interrupt pending flag is cleared. + * @retval ::NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE IRQn is not available for the application. + */ +__STATIC_INLINE uint32_t sd_nvic_ClearPendingIRQ(IRQn_Type IRQn); + +/**@brief Set Interrupt Priority. + * @note Corresponds to NVIC_SetPriority in CMSIS. + * + * @pre IRQn is valid and not reserved by the stack. + * @pre Priority is valid and not reserved by the stack. + * + * @param[in] IRQn See the NVIC_SetPriority documentation in CMSIS. + * @param[in] priority A valid IRQ priority for use by the application. + * + * @retval ::NRF_SUCCESS The interrupt and priority level is available for the application. + * @retval ::NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE IRQn is not available for the application. + * @retval ::NRF_ERROR_SOC_NVIC_INTERRUPT_PRIORITY_NOT_ALLOWED The interrupt priority is not available for the application. + */ +__STATIC_INLINE uint32_t sd_nvic_SetPriority(IRQn_Type IRQn, uint32_t priority); + +/**@brief Get Interrupt Priority. + * @note Corresponds to NVIC_GetPriority in CMSIS. + * + * @pre IRQn is valid and not reserved by the stack. + * + * @param[in] IRQn See the NVIC_GetPriority documentation in CMSIS. + * @param[out] p_priority Return value from NVIC_GetPriority. + * + * @retval ::NRF_SUCCESS The interrupt priority is returned in p_priority. + * @retval ::NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE - IRQn is not available for the application. + */ +__STATIC_INLINE uint32_t sd_nvic_GetPriority(IRQn_Type IRQn, uint32_t * p_priority); + +/**@brief System Reset. + * @note Corresponds to NVIC_SystemReset in CMSIS. + * + * @retval ::NRF_ERROR_SOC_NVIC_SHOULD_NOT_RETURN + */ +__STATIC_INLINE uint32_t sd_nvic_SystemReset(void); + +/**@brief Enter critical region. + * + * @post Application interrupts will be disabled. + * @note sd_nvic_critical_region_enter() and ::sd_nvic_critical_region_exit() must be called in matching pairs inside each + * execution context + * @sa sd_nvic_critical_region_exit + * + * @param[out] p_is_nested_critical_region If 1, the application is now in a nested critical region. + * + * @retval ::NRF_SUCCESS + */ +__STATIC_INLINE uint32_t sd_nvic_critical_region_enter(uint8_t * p_is_nested_critical_region); + +/**@brief Exit critical region. + * + * @pre Application has entered a critical region using ::sd_nvic_critical_region_enter. + * @post If not in a nested critical region, the application interrupts will restored to the state before ::sd_nvic_critical_region_enter was called. + * + * @param[in] is_nested_critical_region If this is set to 1, the critical region won't be exited. @sa sd_nvic_critical_region_enter. + * + * @retval ::NRF_SUCCESS + */ +__STATIC_INLINE uint32_t sd_nvic_critical_region_exit(uint8_t is_nested_critical_region); + +/**@} */ + +#ifndef SUPPRESS_INLINE_IMPLEMENTATION + +__STATIC_INLINE int __sd_nvic_irq_disable(void) +{ + int pm = __get_PRIMASK(); + __disable_irq(); + return pm; +} + +__STATIC_INLINE void __sd_nvic_irq_enable(void) +{ + __enable_irq(); +} + +__STATIC_INLINE uint32_t __sd_nvic_app_accessible_irq(IRQn_Type IRQn) +{ + if (IRQn < 32) + { + return ((1UL<<IRQn) & __NRF_NVIC_APP_IRQS_0) != 0; + } + else if (IRQn < 64) + { + return ((1UL<<(IRQn-32)) & __NRF_NVIC_APP_IRQS_1) != 0; + } + else + { + return 1; + } +} + +__STATIC_INLINE uint32_t __sd_nvic_is_app_accessible_priority(uint32_t priority) +{ + if( (priority >= (1 << __NVIC_PRIO_BITS)) + || (((1 << priority) & __NRF_NVIC_APP_IRQ_PRIOS) == 0) + ) + { + return 0; + } + return 1; +} + + +__STATIC_INLINE uint32_t sd_nvic_EnableIRQ(IRQn_Type IRQn) +{ + if (!__sd_nvic_app_accessible_irq(IRQn)) + { + return NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE; + } + if (!__sd_nvic_is_app_accessible_priority(NVIC_GetPriority(IRQn))) + { + return NRF_ERROR_SOC_NVIC_INTERRUPT_PRIORITY_NOT_ALLOWED; + } + + if (nrf_nvic_state.__cr_flag) + { + nrf_nvic_state.__irq_masks[(uint32_t)((int32_t)IRQn) >> 5] |= (uint32_t)(1 << ((uint32_t)((int32_t)IRQn) & (uint32_t)0x1F)); + } + else + { + NVIC_EnableIRQ(IRQn); + } + return NRF_SUCCESS; +} + +__STATIC_INLINE uint32_t sd_nvic_DisableIRQ(IRQn_Type IRQn) +{ + if (!__sd_nvic_app_accessible_irq(IRQn)) + { + return NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE; + } + + if (nrf_nvic_state.__cr_flag) + { + nrf_nvic_state.__irq_masks[(uint32_t)((int32_t)IRQn) >> 5] &= ~(1UL << ((uint32_t)(IRQn) & 0x1F)); + } + else + { + NVIC_DisableIRQ(IRQn); + } + + return NRF_SUCCESS; +} + +__STATIC_INLINE uint32_t sd_nvic_GetPendingIRQ(IRQn_Type IRQn, uint32_t * p_pending_irq) +{ + if (__sd_nvic_app_accessible_irq(IRQn)) + { + *p_pending_irq = NVIC_GetPendingIRQ(IRQn); + return NRF_SUCCESS; + } + else + { + return NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE; + } +} + +__STATIC_INLINE uint32_t sd_nvic_SetPendingIRQ(IRQn_Type IRQn) +{ + if (__sd_nvic_app_accessible_irq(IRQn)) + { + NVIC_SetPendingIRQ(IRQn); + return NRF_SUCCESS; + } + else + { + return NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE; + } +} + +__STATIC_INLINE uint32_t sd_nvic_ClearPendingIRQ(IRQn_Type IRQn) +{ + if (__sd_nvic_app_accessible_irq(IRQn)) + { + NVIC_ClearPendingIRQ(IRQn); + return NRF_SUCCESS; + } + else + { + return NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE; + } +} + +__STATIC_INLINE uint32_t sd_nvic_SetPriority(IRQn_Type IRQn, uint32_t priority) +{ + if (!__sd_nvic_app_accessible_irq(IRQn)) + { + return NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE; + } + + if (!__sd_nvic_is_app_accessible_priority(priority)) + { + return NRF_ERROR_SOC_NVIC_INTERRUPT_PRIORITY_NOT_ALLOWED; + } + + NVIC_SetPriority(IRQn, (uint32_t)priority); + return NRF_SUCCESS; +} + +__STATIC_INLINE uint32_t sd_nvic_GetPriority(IRQn_Type IRQn, uint32_t * p_priority) +{ + if (__sd_nvic_app_accessible_irq(IRQn)) + { + *p_priority = (NVIC_GetPriority(IRQn) & 0xFF); + return NRF_SUCCESS; + } + else + { + return NRF_ERROR_SOC_NVIC_INTERRUPT_NOT_AVAILABLE; + } +} + +__STATIC_INLINE uint32_t sd_nvic_SystemReset(void) +{ + NVIC_SystemReset(); + return NRF_ERROR_SOC_NVIC_SHOULD_NOT_RETURN; +} + +__STATIC_INLINE uint32_t sd_nvic_critical_region_enter(uint8_t * p_is_nested_critical_region) +{ + int was_masked = __sd_nvic_irq_disable(); + if (!nrf_nvic_state.__cr_flag) + { + nrf_nvic_state.__cr_flag = 1; + nrf_nvic_state.__irq_masks[0] = ( NVIC->ICER[0] & __NRF_NVIC_APP_IRQS_0 ); + NVIC->ICER[0] = __NRF_NVIC_APP_IRQS_0; + nrf_nvic_state.__irq_masks[1] = ( NVIC->ICER[1] & __NRF_NVIC_APP_IRQS_1 ); + NVIC->ICER[1] = __NRF_NVIC_APP_IRQS_1; + *p_is_nested_critical_region = 0; + } + else + { + *p_is_nested_critical_region = 1; + } + if (!was_masked) + { + __sd_nvic_irq_enable(); + } + return NRF_SUCCESS; +} + +__STATIC_INLINE uint32_t sd_nvic_critical_region_exit(uint8_t is_nested_critical_region) +{ + if (nrf_nvic_state.__cr_flag && (is_nested_critical_region == 0)) + { + int was_masked = __sd_nvic_irq_disable(); + NVIC->ISER[0] = nrf_nvic_state.__irq_masks[0]; + NVIC->ISER[1] = nrf_nvic_state.__irq_masks[1]; + nrf_nvic_state.__cr_flag = 0; + if (!was_masked) + { + __sd_nvic_irq_enable(); + } + } + + return NRF_SUCCESS; +} + +#endif /* SUPPRESS_INLINE_IMPLEMENTATION */ + +#ifdef __cplusplus +} +#endif + +#endif // NRF_NVIC_H__ + +/**@} */ |