build: Add PIR example

This patch adds the initial files to implement a PIR-based motion
detector application. When motion is detected, the application will
inform through advertising data using GAP Broadcast role.

5 files changed, 152 insertions, 1 deletions

diff --git a/Makefile.am b/Makefile.am
index 42fc4b9..b1d550c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,7 +3,11 @@ MAINTAINERCLEANFILES =
 
 # NRF51822 examples & projects
 if PLATFORM_NRF
-SUBDIRS = stack platform/nrf51822 examples/helloworld examples/logging
+SUBDIRS = stack				\
+	  platform/nrf51822		\
+	  examples/helloworld		\
+	  examples/logging		\
+	  examples/PIR
 endif
 
 # TODO: Define SUBDIRS for Ubertooth examples & projects
diff --git a/configure.nrf b/configure.nrf
index eb39b4d..0a035a8 100644
--- a/configure.nrf
+++ b/configure.nrf
@@ -38,4 +38,5 @@ AC_OUTPUT([ Makefile
 	   platform/nrf51822/Makefile
 	   examples/helloworld/Makefile
 	   examples/logging/Makefile
+	   examples/PIR/Makefile
 ])
diff --git a/examples/PIR/Makefile.am b/examples/PIR/Makefile.am
new file mode 100644
index 0000000..ca47348
--- /dev/null
+++ b/examples/PIR/Makefile.am
@@ -0,0 +1,40 @@
+AM_CFLAGS=-mcpu=cortex-m0 -mthumb
+AM_LDFLAGS=--specs=nano.specs -mabi=aapcs -Xlinker -Map=pir.map		\
+	   -T$(top_builddir)/platform/nrf51822/gcc_nrf51_blank_xxaa.ld	\
+	   -L$(SDK_DIR)/Nordic/nrf51822/Source/templates/gcc
+
+PLATFORM_LIBS = $(top_builddir)/stack/libblestack.a			\
+		$(top_builddir)/platform/nrf51822/libnrf.a
+
+AM_CPPFLAGS = -I$(top_builddir)/stack					\
+	      -I$(top_builddir)/platform/nrf51822			\
+	      -I$(SDK_DIR)/Nordic/nrf51822/Include			\
+	      -I$(SDK_DIR)/Nordic/nrf51822/Include/gcc			\
+	      -I$(SDK_DIR)/Nordic/nrf51822/Include/ble/softdevice
+
+PIR_SOURCE_FILES = main.c
+PIR_OBJECT_FILES = $(PIR_SOURCE_FILES:.c=.o)
+
+all: pir.bin
+
+pir.bin: pir.out
+	$(OBJCOPY) -Obinary pir.out $@
+
+pir.out: $(PIR_OBJECT_FILES)
+
+	$(CC) $(AM_LDFLAGS) $(AM_CFLAGS) $(PIR_OBJECT_FILES) $(PLATFORM_LIBS) -o $@
+
+	$(OBJDUMP) -h pir.out
+
+# Build object files from C source files
+%.o: %.c
+	$(CC) -c $(CFLAGS) $(AM_CPPFLAGS) -o $@ $<
+
+MAINTAINERCLEANFILES = Makefile.in		\
+		       pir.bin			\
+		       pir.out			\
+		       pir.map
+
+clean-local:
+	$(RM) -rf $(MAINTAINERCLEANFILES)
+	$(RM) *.o
diff --git a/examples/PIR/flash.jlink b/examples/PIR/flash.jlink
new file mode 100644
index 0000000..8e630a2
--- /dev/null
+++ b/examples/PIR/flash.jlink
@@ -0,0 +1,8 @@
+device nrf51822
+speed 1000
+w4 4001e504 1
+loadbin /osd/work/iot/blestack.git/examples/PIR/pir.bin 0
+sleep 100
+r
+g
+q
diff --git a/examples/PIR/main.c b/examples/PIR/main.c
new file mode 100644
index 0000000..a1d4982
--- /dev/null
+++ b/examples/PIR/main.c
@@ -0,0 +1,98 @@
+/**
+ *  The MIT License (MIT)
+ *
+ *  Copyright (c) 2013 Paulo B. de Oliveira Filho <pauloborgesfilho@gmail.com>
+ *  Copyright (c) 2013 Claudio Takahasi <claudio.takahasi@gmail.com>
+ *  Copyright (c) 2013 João Paulo Rechi Vita <jprvita@gmail.com>
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <string.h>
+
+/* Platform specific headers */
+#include <nrf51.h>
+#include <boards.h>
+#include <nrf_gpio.h>
+#include <nrf_delay.h>
+
+#include <app_common/app_gpiote.h>
+
+/* Project headers */
+#include "log.h"
+
+#define GPIOTE_MAX_USERS			1
+#define MOTION_PIN				0
+
+static __inline void gpiote_init(void)
+{
+	GPIO_LED_CONFIG(LED0);
+	GPIO_LED_CONFIG(LED1);
+
+	/*
+	 * Allocate the buffer needed by the GPIOTE module
+	 * (including aligning the buffer correctly).
+	 */
+	APP_GPIOTE_INIT(GPIOTE_MAX_USERS);
+}
+
+static __inline void motion_evt_handler(uint32_t low, uint32_t high)
+{
+	if (high) {
+		DBG("Motion: HIGH");
+		nrf_gpio_pin_set(LED0);
+	} else if (low) {
+		DBG("Motion: LOW");
+		nrf_gpio_pin_clear(LED0);
+	}
+}
+
+static __inline void pir_init(void)
+{
+	uint32_t err_code;
+	uint32_t pin_mask = 1 << MOTION_PIN;
+	app_gpiote_user_id_t id;
+
+	GPIO_BUTTON_CONFIG(MOTION_PIN);
+
+	err_code = app_gpiote_user_register(&id, pin_mask, pin_mask,
+							motion_evt_handler);
+	APP_ERROR_CHECK(err_code);
+
+	err_code = app_gpiote_user_enable(id);
+	APP_ERROR_CHECK(err_code);
+}
+
+int main(void)
+{
+	log_init();
+
+	DBG("PIR: setup");
+
+	gpiote_init();
+	pir_init();
+
+	DBG("PIR: waiting events ...");
+
+	while (1)
+		__WFI();
+
+	return 0;
+}