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Dependents: BLE_Acceleration_Statejudging
Fork of nRF51822 by
Diff: nordic/nrf-sdk/sd_common/app_util_platform.h
- Revision:
- 37:c29c330d942c
- Child:
- 65:98215c4f3a25
diff -r bd0186ce644a -r c29c330d942c nordic/nrf-sdk/sd_common/app_util_platform.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/nordic/nrf-sdk/sd_common/app_util_platform.h Mon Jul 07 13:43:31 2014 +0100 @@ -0,0 +1,110 @@ +/* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved. + * + * The information contained herein is property of Nordic Semiconductor ASA. + * Terms and conditions of usage are described in detail in NORDIC + * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. + * + * Licensees are granted free, non-transferable use of the information. NO + * WARRANTY of ANY KIND is provided. This heading must NOT be removed from + * the file. + * + */ + +/**@file + * + * @defgroup app_util_platform Utility Functions and Definitions (Platform) + * @{ + * @ingroup app_common + * + * @brief Various types and definitions available to all applications when using SoftDevice. + */ + +#ifndef APP_UTIL_PLATFORM_H__ +#define APP_UTIL_PLATFORM_H__ + +#include <stdint.h> +#include "compiler_abstraction.h" +#include "nrf51.h" +#include "app_error.h" + +/**@brief The interrupt priorities available to the application while the SoftDevice is active. */ +typedef enum +{ + APP_IRQ_PRIORITY_HIGH = 1, + APP_IRQ_PRIORITY_LOW = 3 +} app_irq_priority_t; + +#define NRF_APP_PRIORITY_THREAD 4 /**< "Interrupt level" when running in Thread Mode. */ + +/**@cond NO_DOXYGEN */ +#define EXTERNAL_INT_VECTOR_OFFSET 16 +/**@endcond */ + +#define PACKED(TYPE) __packed TYPE + +/**@brief Macro for entering a critical region. + * + * @note Due to implementation details, there must exist one and only one call to + * CRITICAL_REGION_EXIT() for each call to CRITICAL_REGION_ENTER(), and they must be located + * in the same scope. + */ +#define CRITICAL_REGION_ENTER() \ + { \ + uint8_t IS_NESTED_CRITICAL_REGION = 0; \ + uint32_t CURRENT_INT_PRI = current_int_priority_get(); \ + if (CURRENT_INT_PRI != APP_IRQ_PRIORITY_HIGH) \ + { \ + uint32_t ERR_CODE = sd_nvic_critical_region_enter(&IS_NESTED_CRITICAL_REGION); \ + if (ERR_CODE == NRF_ERROR_SOFTDEVICE_NOT_ENABLED) \ + { \ + __disable_irq(); \ + } \ + else \ + { \ + APP_ERROR_CHECK(ERR_CODE); \ + } \ + } + +/**@brief Macro for leaving a critical region. + * + * @note Due to implementation details, there must exist one and only one call to + * CRITICAL_REGION_EXIT() for each call to CRITICAL_REGION_ENTER(), and they must be located + * in the same scope. + */ +#define CRITICAL_REGION_EXIT() \ + if (CURRENT_INT_PRI != APP_IRQ_PRIORITY_HIGH) \ + { \ + uint32_t ERR_CODE; \ + __enable_irq(); \ + ERR_CODE = sd_nvic_critical_region_exit(IS_NESTED_CRITICAL_REGION); \ + if (ERR_CODE != NRF_ERROR_SOFTDEVICE_NOT_ENABLED) \ + { \ + APP_ERROR_CHECK(ERR_CODE); \ + } \ + } \ + } + +/**@brief Function for finding the current interrupt level. + * + * @return Current interrupt level. + * @retval APP_IRQ_PRIORITY_HIGH We are running in Application High interrupt level. + * @retval APP_IRQ_PRIORITY_LOW We are running in Application Low interrupt level. + * @retval APP_IRQ_PRIORITY_THREAD We are running in Thread Mode. + */ +static __INLINE uint8_t current_int_priority_get(void) +{ + uint32_t isr_vector_num = (SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk); + if (isr_vector_num > 0) + { + int32_t irq_type = ((int32_t)isr_vector_num - EXTERNAL_INT_VECTOR_OFFSET); + return (NVIC_GetPriority((IRQn_Type)irq_type) & 0xFF); + } + else + { + return NRF_APP_PRIORITY_THREAD; + } +} + +#endif // APP_UTIL_PLATFORM_H__ + +/** @} */