diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t2t_lib/nfc_t2t_lib.h')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t2t_lib/nfc_t2t_lib.h | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t2t_lib/nfc_t2t_lib.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t2t_lib/nfc_t2t_lib.h new file mode 100644 index 0000000..cfb88b7 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t2t_lib/nfc_t2t_lib.h @@ -0,0 +1,275 @@ +/** + * Copyright (c) 2015 - 2018, Telit Communications Cyprus Ltd + * + * 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 NFC_T2T_LIB_H__ +#define NFC_T2T_LIB_H__ + +/** @file + * + * @addtogroup nfc_api + * + * @defgroup nfc_t2t NFC Type 2 Tag + * @ingroup nfc_api + * @brief Implementation of NFC Type 2 Tag. + * + * @defgroup nfc_t2t_lib NFC tag 2 type emulation library + * @{ + * @ingroup nfc_t2t + * @brief The T2T emulation library interface. + */ + +#include <string.h> +#include <sdk_errors.h> + +#ifdef __cplusplus +extern "C" { +#endif + +#define NFC_T2T_SIZEOF_INTERNAL_BYTES 10 ///< T2T internal byte size. +#define NFC_T2T_MAX_PAYLOAD_SIZE 988 ///< Maximum NDEF message size. +#define NFC_T2T_MAX_PAYLOAD_SIZE_RAW 1008 ///< No NDEF-TLV and no implicit lock bytes at the end. + +/** @brief Events passed to the callback function. */ +typedef enum +{ + NFC_T2T_EVENT_NONE, + ///< Not used. + + NFC_T2T_EVENT_FIELD_ON, + ///< NFC tag has detected external NFC field and was selected by an NFC polling device. + + NFC_T2T_EVENT_FIELD_OFF, + ///< External NFC field has been removed. + + NFC_T2T_EVENT_DATA_READ, + ///< NFC polling device has read all tag data. + /**< + * Repeated reading in the same session i.e. before @ref NFC_T2T_EVENT_FIELD_OFF event, + * will not trigger another @ref NFC_T2T_EVENT_DATA_READ event. + */ + + NFC_T2T_EVENT_STOPPED + ///< Reference to the application NFC callback has been released using @ref nfc_t2t_done. +} nfc_t2t_event_t; + +typedef enum +{ + NFC_T2T_PARAM_TESTING, ///< Used for unit tests. + NFC_T2T_PARAM_NFCID1, /**< NFCID1 value, data can be 4, 7, or 10 bytes long (single, double, or triple size). + To use default NFCID1 of specific length pass one byte containing requested length. + Default 7-byte NFCID1 will be used if this parameter was not set. This parameter can be + set before nfc_t2t_setup() to set initial NFCID1 and it can be changed later. */ +} nfc_t2t_param_id_t; + +/** @brief Callback to pass events from NFC T2T Library to application. + * + * @param[in] p_context Application context for callback execution. + * @param[in] event The event that occurred. + * @param[in] p_data Data to send to the application (event specific). + * @param[in] data_length Length of the data. + */ +typedef void (*nfc_t2t_callback_t)(void * p_context, + nfc_t2t_event_t event, + const uint8_t * p_data, + size_t data_length); + +/** @brief Function for registering the application callback for event signaling. + * + * The callback will be called by NFC T2T Library to notify the application of relevant + * events. It will be called from the HAL_NFC callback context. + * + * @param[in] callback Function pointer to the callback. + * @param[in] p_context Pointer to a memory area used by the callback for execution (optional). + * + * @retval NRF_SUCCESS If the application callback was registered successfully. If one + * of the arguments was invalid, an error code is returned. + */ +ret_code_t nfc_t2t_setup(nfc_t2t_callback_t callback, void * p_context); + +/** @brief Function for setting an NFC parameter. + * + * @note Not implemented. For future use. + * + * This function allows to set any parameter defined as available by HAL_NFC. + * + * @param[in] id ID of the parameter to set. + * @param[in] p_data Pointer to a buffer containing the data to set. + * @param[in] data_length Size of the buffer containing the data to set. + * + * @retval NRF_SUCCESS If the parameter was set successfully. If one of the arguments + * was invalid (for example, a wrong data length), an error code + * is returned. + */ +ret_code_t nfc_t2t_parameter_set(nfc_t2t_param_id_t id, void * p_data, size_t data_length); + +/** @brief Function for querying an NFC parameter value. + * + * @note Not implemented. For future use. + * + * The queried value will be placed into the passed data buffer. If the buffer + * is too small, p_max_data_length will contain the required buffer size. If the + * buffer is big enough, p_max_data_length will contain the actual size of the + * data. + * + * @param[in] id ID of the parameter to query. + * @param[in] p_data Pointer to a buffer receiving the queried data. + * @param[in, out] p_max_data_length Size of the buffer, receives actual size of queried data. + * + * @retval NRF_SUCCESS If the parameter was received successfully. If one of the arguments + * was invalid (for example, the buffer was too small), an error code + * is returned. + */ +ret_code_t nfc_t2t_parameter_get(nfc_t2t_param_id_t id, void * p_data, size_t * p_max_data_length); + +/** @brief Function for registering the payload to send on reception of a READ request. + * + * The payload is considered to only contain the NDEF message to deliver to a + * reader. The required NDEF TLV will be created implicitly by NFC T2T Library. + * + * The pointer to the payload must stay valid for the duration of the library + * execution, or until it is explicitly released. + * + * If the pointer is not NULL, but the length is zero, the paypload is + * considered to be an empty NDEF message. + * + * If a new payload is registered, the previously registered one is considered + * released. + * + * Passing a NULL pointer releases the current payload without registering a + * new one. + * + * If an invalid size is given (too big), the function returns with an error + * and the currently registered payload is left unchanged. + * + * @note Provided pointer must point to RAM region. + * + * @param[in] p_payload Pointer to the memory area in RAM containing the payload to send. + * @param[in] payload_length Size of the payload in bytes. + * + * @retval NRF_SUCCESS If the operation was successful. If one + * of the arguments was invalid, an error code is returned. + */ +ret_code_t nfc_t2t_payload_set(const uint8_t * p_payload, size_t payload_length); + +/** @brief Function for registering the raw payload to send on reception of a READ request. + * + * The payload will be delivered directly as-is to the reader, without + * implicitly adding an NDEF TLV container. This can be used if the + * application wants to define the TLVs itself, for example, to provide a different + * memory layout. + * + * The pointer to the payload must stay valid for the duration of the library + * execution, or until it is explicitly released. + * + * If a new payload is registered, the previously registered one is considered + * released. + * + * Passing a NULL pointer releases the current payload, without registering a + * new one. + * + * If an invalid size is given (too big), the function returns with an error + * and the currently registered payload is left unchanged. + * + * @note Provided pointer must points to RAM region. + * + * @param[in] p_payload Pointer to the memory area in RAM containing the payload to send. + * @param[in] payload_length Size of the payload in bytes. + * + * @retval NRF_SUCCESS If the operation was successful. If one + * of the arguments was invalid, an error code is returned. + */ +ret_code_t nfc_t2t_payload_raw_set(const uint8_t * p_payload, size_t payload_length); + +/** @brief Function for registering the sequence of internal bytes. + * + * This refers to the first 10 bytes of the tag memory. The library will set + * a sensible default for these bytes. The application can use this function + * to override the default. + * + * Passing a NULL pointer reverts back to the default sequence. + * The data will be copied by NFC T2T Library, so the memory does not have to remain valid + * after the function returns. + * + * @note When modifying the internal bytes, remember that they must be consistent + * with the NFC hardware register settings (see @ref nfc_t2t_format_internal). + * + * @param[in] p_data Pointer to the memory area containing the data. + * @param[in] data_length Size of the data in bytes. + * + * @retval NRF_SUCCESS If the operation was successful. If the data was not NULL and the + * data length was not 10, an error code is returned. + */ +ret_code_t nfc_t2t_internal_set(const uint8_t * p_data, size_t data_length); + +/** @brief Function for activating the NFC frontend. + * + * You must call this function so that events are posted to the application + * callback. + * + * @retval NRF_SUCCESS If the NFC frontend was activated successfully. If the lower layer + * could not be started, an error code is returned. + */ +ret_code_t nfc_t2t_emulation_start(void); + +/** @brief Function for deactivating the NFC frontend. + * + * After calling this function, no more events will be posted to the + * application callback. + * + * @retval NRF_SUCCESS If the NFC frontend was deactivated successfully. If the lower layer + * could not be stopped, an error code is returned. + */ +ret_code_t nfc_t2t_emulation_stop(void); + +/** @brief Function for releasing the reference to the application callback. + * + * After calling this function, the passed callback pointer is no longer + * considered valid. + * + * @retval NRF_SUCCESS This function always succeeds. + */ +ret_code_t nfc_t2t_done(void); + +#ifdef __cplusplus +} +#endif + +/** @} */ +#endif // NFC_T2T_LIB_H__ |