samples: gpio: extends to support gpio_atmel_sam3 driver

This adds code to the gpio sample apps to run on Arduino due,
using the gpio_atmel_sam3 driver.

Change-Id: Ida16ceeabf55eb7efedc94c56ff875d8fad6456d
Signed-off-by: Daniel Leung <daniel.leung@intel.com>

3 files changed, 46 insertions, 9 deletions

diff --git a/samples/nanokernel/apps/gpio/Makefile b/samples/nanokernel/apps/gpio/Makefile
index b0c7d951f..567da028a 100644
--- a/samples/nanokernel/apps/gpio/Makefile
+++ b/samples/nanokernel/apps/gpio/Makefile
@@ -1,8 +1,12 @@
 ifeq ($(ARCH),arc)
 BOARD ?= arduino_101_sss
 else
+ifeq ($(ARCH),arm)
+BOARD ?= arduino_due
+else
 BOARD ?= arduino_101
 endif
+endif
 
 KERNEL_TYPE ?= nano
 CONF_FILE = prj_$(ARCH).conf
diff --git a/samples/nanokernel/apps/gpio/prj_arm.conf b/samples/nanokernel/apps/gpio/prj_arm.conf
new file mode 100644
index 000000000..a036c67a3
--- /dev/null
+++ b/samples/nanokernel/apps/gpio/prj_arm.conf
@@ -0,0 +1,6 @@
+CONFIG_STDOUT_CONSOLE=y
+CONFIG_PRINTK=y
+CONFIG_NANO_TIMERS=y
+CONFIG_NANO_TIMEOUTS=y
+CONFIG_GPIO=y
+CONFIG_GPIO_ATMEL_SAM3=y
diff --git a/samples/nanokernel/apps/gpio/src/main.c b/samples/nanokernel/apps/gpio/src/main.c
index 7cefa8875..1688812aa 100644
--- a/samples/nanokernel/apps/gpio/src/main.c
+++ b/samples/nanokernel/apps/gpio/src/main.c
@@ -15,15 +15,15 @@
  */
 
 /**
- * @file Sample app to utilize GPIO on Arduino 101.
+ * @file Sample app to utilize GPIO on Arduino 101 and Arduino Due.
  *
- * x86
+ * Arduino 101 - x86
  * --------------------
  *
  * On x86 side of Arduino 101:
  * 1. GPIO_16 is on IO8
  * 2. GPIO_19 is on IO4
-
+ *
  * The gpio_dw driver is being used.
  *
  * This sample app toggles GPIO_16/IO8. It also waits for
@@ -38,8 +38,8 @@
  *     GPIO_19 triggered
  * "
  *
- * Sensor Subsystem
- * --------------------
+ * Arduino 101 - Sensor Subsystem
+ * ------------------------------
  *
  * On Sensor Subsystem of Arduino 101:
  * 1. GPIO_SS[ 2] is on A00
@@ -69,6 +69,27 @@
  *     Toggling GPIO_SS_2
  *     GPIO_SS_3 triggered
  * "
+ *
+ * Arduino Due
+ * -----------
+ *
+ * On Arduino Due:
+ * 1. IO_2 is PB25
+ * 2. IO_13 is PB27 (linked to the LED marked "L")
+ *
+ * The gpio_atmel_sam3 driver is being used.
+ *
+ * This sample app toggles IO_2. It also waits for
+ * IO_13 to go high and display a message.
+ *
+ * If IO_2 and IO_13 are connected together, the GPIO should
+ * triggers every 2 seconds. And you should see this repeatedly
+ * on console:
+ * "
+ *     Toggling GPIO_25
+ *     Toggling GPIO_25
+ *     GPIO_27 triggered
+ * "
  */
 
 #include <zephyr.h>
@@ -87,20 +108,26 @@
 
 #define SLEEPTICKS	SECONDS(1)
 
-#ifdef CONFIG_SOC_QUARK_SE_SS
+#if defined(CONFIG_SOC_QUARK_SE_SS)
 #define GPIO_OUT_PIN	2
 #define GPIO_INT_PIN	3
 #define GPIO_NAME	"GPIO_SS_"
-#else
+#elif defined(CONFIG_SOC_QUARK_SE)
 #define GPIO_OUT_PIN	16
 #define GPIO_INT_PIN	19
 #define GPIO_NAME	"GPIO_"
+#elif defined(CONFIG_SOC_ATMEL_SAM3)
+#define GPIO_OUT_PIN	25
+#define GPIO_INT_PIN	27
+#define GPIO_NAME	"GPIO_"
 #endif
 
-#ifdef CONFIG_GPIO_DW_0
+#if defined(CONFIG_GPIO_DW_0)
 #define GPIO_DRV_NAME CONFIG_GPIO_DW_0_NAME
-#elif CONFIG_GPIO_QMSI_0
+#elif defined(CONFIG_GPIO_QMSI_0)
 #define GPIO_DRV_NAME CONFIG_GPIO_QMSI_0_NAME
+#elif defined(CONFIG_GPIO_ATMEL_SAM3)
+#define GPIO_DRV_NAME CONFIG_GPIO_ATMEL_SAM3_PORTB_DEV_NAME
 #else
 #error "Unsupported GPIO driver"
 #endif