Add RFID_READUID sample application

examples/README.txt

@@ -1731,6 +1731,11 @@ examples/relays
   NuttX is built as a protected, supervisor kernel (CONFIG_BUILD_PROTECTED
   or CONFIG_BUILD_KERNEL).
 
+examples/rfid_readuid
+^^^^^^^^^^^^^^^^^^^^^
+
+  RFID READUID example
+
 examples/rgbled
 ^^^^^^^^^^^^^^^
 

examples/rfid_readuid/.gitignore

@@ -0,0 +1,11 @@
+/Make.dep
+/.depend
+/.built
+/*.asm
+/*.obj
+/*.rel
+/*.lst
+/*.sym
+/*.adb
+/*.lib
+/*.src

examples/rfid_readuid/Kconfig

@@ -0,0 +1,30 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config EXAMPLES_RFID_READUID
+	bool "RFID Read UID example"
+	default n
+	---help---
+		Enable the RFID READUID example
+
+if EXAMPLES_RFID_READUID
+
+config EXAMPLES_RFID_READUID_PROGNAME
+	string "Program name"
+	default "rfid_readuid"
+	depends on BUILD_KERNEL
+	---help---
+		This is the name of the program that will be use when the NSH ELF
+		program is installed.
+
+config EXAMPLES_RFID_READUID_PRIORITY
+	int "RFID Read UID task priority"
+	default 100
+
+config EXAMPLES_RFID_READUID_STACKSIZE
+	int "RFID Read UID stack size"
+	default 2048
+
+endif

examples/rfid_readuid/Make.defs

@@ -0,0 +1,39 @@
+############################################################################
+# apps/examples/rfid_readuid/Make.defs
+# Adds selected applications to apps/ build
+#
+#   Copyright (C) 2016 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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 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 NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER 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.
+#
+############################################################################
+
+ifeq ($(CONFIG_EXAMPLES_RFID_READUID),y)
+CONFIGURED_APPS += examples/rfid_readuid
+endif

examples/rfid_readuid/Makefile

@@ -0,0 +1,56 @@
+############################################################################
+# apps/examples/rfid_readuid/Makefile
+#
+#   Copyright (C) 2016 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# 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 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 NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER 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.
+#
+############################################################################
+
+-include $(TOPDIR)/Make.defs
+
+# RFID Read UID built-in application info
+
+CONFIG_EXAMPLES_RFID_READUID_PRIORITY ?= SCHED_PRIORITY_DEFAULT
+CONFIG_EXAMPLES_RFID_READUID_STACKSIZE ?= 2048
+
+APPNAME = rfid_readuid
+PRIORITY = $(CONFIG_EXAMPLES_RFID_READUID_PRIORITY)
+STACKSIZE = $(CONFIG_EXAMPLES_RFID_READUID_STACKSIZE)
+
+# RFID Read UID Example
+
+ASRCS =
+CSRCS =
+MAINSRC = rfid_readuid.c
+
+CONFIG_EXAMPLES_RFID_READUID_PROGNAME ?= rfid_readuid$(EXEEXT)
+PROGNAME = $(CONFIG_EXAMPLES_RFID_READUID_PROGNAME)
+
+include $(APPDIR)/Application.mk

examples/rfid_readuid/rfid_readuid.c

@@ -0,0 +1,119 @@
+/****************************************************************************
+ * examples/rfid_readuid/rfid_readuid.c
+ *
+ *   Copyright (C) 2016 Gregory Nutt. All rights reserved.
+ *   Author: Alan Carvalho de Assis <acassis@gmail.com>
+ *
+ * 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 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 NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <nuttx/wireless/mfrc522.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef CONFIG_WL_MFRC522
+#  error "CONFIG_WL_MFRC522 is not defined in the configuration"
+#endif
+
+#ifndef CONFIG_EXAMPLES_RFID_READUID_DEVNAME
+#  define CONFIG_EXAMPLES_RFID_READUID_DEVNAME "/dev/rfid0"
+#endif
+
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * rfid_readuid_main
+ ****************************************************************************/
+
+#ifdef CONFIG_BUILD_KERNEL
+int main(int argc, FAR char *argv[])
+#else
+int rfid_readuid_main(int argc, char *argv[])
+#endif
+{
+  int fd;
+  int ret;
+  int count = 0;
+  char buffer[10];
+
+  fd = open(CONFIG_EXAMPLES_RFID_READUID_DEVNAME, O_RDONLY);
+  if (fd < 0)
+    {
+      printf("Failed to open %s\n", CONFIG_EXAMPLES_RFID_READUID_DEVNAME);
+      return -1;
+    }
+
+  /* Try to read a card up to 3 times */
+
+  while (count < 3)
+    {
+      printf("Trying to READ: ");
+
+      /* 11 bytes = 0x12345678\0 */
+
+      ret = read(fd, buffer, 11);
+      if (ret == 11)
+        {
+          printf("RFID CARD UID = %s\n", buffer);
+          break;
+        }
+
+      if (ret == -EAGAIN || ret == -EPERM)
+        {
+          printf("Card is not present!\n");
+        }
+      else
+        {
+          printf("Unknown error!\n");
+        }
+
+      /* Wait 500ms before trying again */
+
+      usleep(500000);
+      count++;
+    }
+
+  return 0;
+}