a234b909bc
Fixes for MFRC522 drivers/contactless/mfrc522.c: in mfrc522_read uid.sak must be different from 0x04 not as before from 0x00. SAK == 0x00 is a valid PICC type drivers/contactless/mfrc522.c: add interface to read MIFARE Ultralight data configs/nucleo-l073rz: add mfrc522 support Approved-by: Gregory Nutt <gnutt@nuttx.org>
111 lines
3.7 KiB
C
111 lines
3.7 KiB
C
/************************************************************************************
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* configs/nucleo-l073rz/src/stm32_mfrc522.c
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Mateusz Szafoni <raiden00@railab.me>
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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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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/contactless/mfrc522.h>
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#include "stm32.h"
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#include "stm32_spi.h"
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#include "nucleo-l073rz.h"
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#if defined(CONFIG_SPI) && defined(CONFIG_STM32F0L0_SPI2) && defined(CONFIG_CL_MFRC522)
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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#define MFRC522_SPI_PORTNO 2 /* On SPI2 */
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: stm32_mfrc522initialize
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*
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* Description:
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* Initialize and register the MFRC522 RFID driver.
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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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*
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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 stm32_mfrc522initialize(FAR const char *devpath)
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{
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FAR struct spi_dev_s *spi;
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int ret;
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/* Configure MFRC522 reset */
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stm32_configgpio(GPIO_MFRC522_RESET);
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/* MFRC522 hardware reset on rising edge */
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stm32_gpiowrite(GPIO_MFRC522_RESET, true);
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/* Initialize SPI */
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spi = stm32_spibus_initialize(MFRC522_SPI_PORTNO);
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if (!spi)
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{
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return -ENODEV;
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}
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/* Then register the MFRC522 */
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ret = mfrc522_register(devpath, spi);
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if (ret < 0)
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{
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snerr("ERROR: Error registering MFRC522\n");
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}
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return ret;
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}
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#endif /* CONFIG_SPI && CONFIG_MFRC522 */
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