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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/util/sdk_mapped_flags.h')
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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/util/sdk_mapped_flags.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/util/sdk_mapped_flags.h new file mode 100644 index 0000000..2432c88 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/util/sdk_mapped_flags.h @@ -0,0 +1,199 @@ +/** + * Copyright (c) 2015 - 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. + * + */ +#ifndef SDK_MAPPED_FLAGS_H__ +#define SDK_MAPPED_FLAGS_H__ + +#include <stdint.h> +#include <stdbool.h> +#include "app_util.h" +#include "compiler_abstraction.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * @file + * @defgroup sdk_mapped_flags Mapped flags + * @ingroup app_common + * @{ + * @brief Module for writing and reading flags that are associated + * with keys. + * + * @details The flags are represented as bits in a bitmap called a <i>flag collection</i>. The keys + * are uint16_t. Each flag collection contains all flags of the same type, one flag for + * each key. + * + * The mapped flags module does not keep the flag states, nor the list of keys. These are + * provided in the API calls. A key's index in the key list determines which bit in the + * flag collection is associated with it. This module does not ever edit the key list, and + * does not edit flags except in function calls that take the flag collection as a pointer. + * + */ + +#define SDK_MAPPED_FLAGS_N_KEYS 32 /**< The number of keys to keep flags for. This is also the number of flags in a flag collection. If changing this value, you might also need change the width of the sdk_mapped_flags_t type. */ +#define SDK_MAPPED_FLAGS_N_KEYS_PER_BYTE 8 /**< The number of flags that fit in one byte. */ +#define SDK_MAPPED_FLAGS_INVALID_INDEX 0xFFFF /**< A flag index guaranteed to be invalid. */ + +typedef uint32_t sdk_mapped_flags_t; /**< The bitmap to hold flags. Each flag is one bit, and each bit represents the flag state associated with one key. */ + + +/**@brief Type used to present a subset of the registered keys. + */ +typedef struct +{ + uint32_t len; /**< The length of the list. */ + uint16_t flag_keys[SDK_MAPPED_FLAGS_N_KEYS]; /**< The list of keys. */ +} sdk_mapped_flags_key_list_t; + + +/**@brief Function for getting the first index at which the flag is true in the provided + * collection. + * + * @param[in] flags The flag collection to search for a flag set to true. + * + * @return The first index that has its flag set to true. If none were found, the + * function returns @ref SDK_MAPPED_FLAGS_INVALID_INDEX. + */ +uint16_t sdk_mapped_flags_first_key_index_get(sdk_mapped_flags_t flags); + + +/**@brief Function for updating the state of a flag. + * + * @param[in] p_keys The list of associated keys (assumed to have a length of + * @ref SDK_MAPPED_FLAGS_N_KEYS). + * @param[out] p_flags The flag collection to modify. + * @param[in] key The key to modify the flag of. + * @param[in] value The state to set the flag to. + */ +void sdk_mapped_flags_update_by_key(uint16_t * p_keys, + sdk_mapped_flags_t * p_flags, + uint16_t key, + bool value); + + +/**@brief Function for updating the state of the same flag in multiple flag collections. + * + * @details The key and value are the same for all flag collections in the p_flags array. + * + * @param[in] p_keys The list of associated keys (assumed to have a length of + * @ref SDK_MAPPED_FLAGS_N_KEYS). + * @param[out] p_flags The flag collections to modify. + * @param[out] n_flag_collections The number of flag collections in p_flags. + * @param[in] key The key to modify the flag of. + * @param[in] value The state to set the flag to. + */ +void sdk_mapped_flags_bulk_update_by_key(uint16_t * p_keys, + sdk_mapped_flags_t * p_flags, + uint32_t n_flag_collections, + uint16_t key, + bool value); + + +/**@brief Function for getting the state of a specific flag. + * + * @param[in] p_keys The list of associated keys (assumed to have a length of + * @ref SDK_MAPPED_FLAGS_N_KEYS). + * @param[in] flags The flag collection to read from. + * @param[in] key The key to get the flag for. + * + * @return The state of the flag. + */ +bool sdk_mapped_flags_get_by_key(uint16_t * p_keys, sdk_mapped_flags_t flags, uint16_t key); + + +/**@brief Function for getting the state of a specific flag. + * + * @param[in] p_keys The list of associated keys (assumed to have a length of + * @ref SDK_MAPPED_FLAGS_N_KEYS). + * @param[in] flags The flag collection from which to read. + * @param[in] key The key for which to get the flag. + * @param[out] p_index If not NULL, the index of the key. + * + * @return The state of the flag. + */ +bool sdk_mapped_flags_get_by_key_w_idx(uint16_t * p_keys, + sdk_mapped_flags_t flags, + uint16_t key, + uint8_t * p_index); + + +/**@brief Function for getting a list of all keys that have a specific flag set to true. + * + * @param[in] p_keys The list of associated keys (assumed to have a length of + * @ref SDK_MAPPED_FLAGS_N_KEYS). + * @param[in] flags The flag collection to search. + * + * @return The list of keys. + */ +sdk_mapped_flags_key_list_t sdk_mapped_flags_key_list_get(uint16_t * p_keys, + sdk_mapped_flags_t flags); + + +/**@brief Function for getting the number of keys that have a specific flag set to true. + * + * @param[in] flags The flag collection to search. + * + * @return The number of keys. + */ +uint32_t sdk_mapped_flags_n_flags_set(sdk_mapped_flags_t flags); + + +/**@brief Function for querying whether any flags in the collection are set. + * + * @param[in] flags The flag collection to query. + * + * @retval true If one or more flags are set to true. + * @retval false Otherwise. + */ +static __INLINE bool sdk_mapped_flags_any_set(sdk_mapped_flags_t flags) +{ + return (flags != 0); +} + + +/** @} */ + + +#ifdef __cplusplus +} +#endif + +#endif /* SDK_MAPPED_FLAGS_H__ */ |