113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/****************************************************************************
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* include/contactless/mfrc522.h
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*
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* Copyright(C) 2016 Uniquix Ltda. All rights reserved.
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* Author: Alan Carvalho de Assis <acassis@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_CONTACTLESS_MFRC522_H
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#define __INCLUDE_NUTTX_CONTACTLESS_MFRC522_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/ioctl.h>
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#include <nuttx/irq.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/contactless/ioctl.h>
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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#define MFRC522_MIFARE_ISO14443A (0x00)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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enum mfrc522_state_e
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{
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MFRC522_STATE_NOT_INIT,
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MFRC522_STATE_IDLE,
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MFRC522_STATE_CMD_SENT,
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MFRC522_STATE_DATA_READY,
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};
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struct mfrc522_dev_s;
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struct picc_uid_s
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{
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uint8_t size; /* Number of bytes in the UID. 4, 7 or 10 */
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uint8_t uid_data[10];
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uint8_t sak; /* The SAK (Select Acknowledge) return by the PICC */
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: mfrc522_register
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*
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* Description:
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* Register the MFRC522 character device as 'devpath'
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*
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* Input Parameters:
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* devpath - The full path to the driver to register. E.g., "/dev/rfid0"
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* spi - An instance of the SPI interface to use to communicate with MFRC522
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* config - Device persistent board data
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int mfrc522_register(FAR const char *devpath, FAR struct spi_dev_s *spi);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCLUDE_NUTTX_CONTACTLESS_MFRC522_H */
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