Add serial and LED driver

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2519 42af7a65-404d-4744-a932-0658087f49c3

configs/sam3u-ek/include/board.h

@@ -86,23 +86,15 @@
 
 /* LED definitions ******************************************************************/
 
-#define LED_STARTED                0
+#define LED_STARTED                0 /* LED0=OFF LED1=OFF LED2=OFF */
-#define LED_HEAPALLOCATE           1
+#define LED_HEAPALLOCATE           1 /* LED0=OFF LED1=OFF LED2=ON */
-#define LED_IRQSENABLED            2
+#define LED_IRQSENABLED            2 /* LED0=OFF LED1=ON  LED2=OFF */
-#define LED_STACKCREATED           3
+#define LED_STACKCREATED           3 /* LED0=OFF LED1=ON  LED2=ON */
-#define LED_INIRQ                  4
-#define LED_SIGNAL                 5
-#define LED_ASSERTION              6
-#define LED_PANIC                  7 
 
-/* GPIO pin definitions *************************************************************/
+#define LED_INIRQ                  4 /* LED0=OFF LED1=TOG LED2=XXX */
-
+#define LED_SIGNAL                 5 /* LED0=OFF LED1=XXX LED2=TOG */
-#define GPIO_LED0                 (GPIO_OUTPUT|GPIO_CFG_DEFAULT|GPIO_PORT_PIOB|GPIO_OUTPUT_CLEAR|GPIO_PIN0)
+#define LED_ASSERTION              6 /* LED0=TOG LED1=XXX LED2=XXX */
-#define GPIO_LED1                 (GPIO_OUTPUT|GPIO_CFG_DEFAULT|GPIO_PORT_PIOB|GPIO_OUTPUT_SET|GPIO_PIN1)
+#define LED_PANIC                  7 /* LED0=TOG LED1=XXX LED2=XXX*/
-#define GPIO_LED2                 (GPIO_OUTPUT|GPIO_CFG_DEFAULT|GPIO_PORT_PIOB|GPIO_OUTPUT_SET|GPIO_PIN2)
-
-#define GPIO_BUTTON1              (GPIO_INPUT|GPIO_CFG_PULLUP|GPIO_CFG_DEGLITCH|GPIO_PORT_PIOA|GPIO_PIN18)
-#define GPIO_BUTTON2              (GPIO_INPUT|GPIO_CFG_PULLUP|GPIO_CFG_DEGLITCH|GPIO_PORT_PIOA|GPIO_PIN19)
 
 /************************************************************************************
  * Public Data

configs/sam3u-ek/ostest/defconfig

@@ -100,7 +100,7 @@ CONFIG_SAM3U_BUILDROOT=y
 #
 #  Individual subsystems can be enabled:
 #
-CONFIG_SAM3U_USART=y
+CONFIG_SAM3U_UART=y
 CONFIG_SAM3U_USART0=n
 CONFIG_SAM3U_USART1=n
 CONFIG_SAM3U_USART2=n

configs/sam3u-ek/src/sam3uek_internal.h

@@ -51,10 +51,19 @@
 
 /* SAM3U-EK GPIOs *******************************************************************/
 
+/* GPIO pin definitions *************************************************************/
+
 /* LEDs */
 
+#define GPIO_LED0    (GPIO_OUTPUT|GPIO_CFG_DEFAULT|GPIO_PORT_PIOB|GPIO_OUTPUT_CLEAR|GPIO_PIN0)
+#define GPIO_LED1    (GPIO_OUTPUT|GPIO_CFG_DEFAULT|GPIO_PORT_PIOB|GPIO_OUTPUT_SET|GPIO_PIN1)
+#define GPIO_LED2    (GPIO_OUTPUT|GPIO_CFG_DEFAULT|GPIO_PORT_PIOB|GPIO_OUTPUT_SET|GPIO_PIN2)
+
 /* BUTTONS */
 
+#define GPIO_BUTTON1 (GPIO_INPUT|GPIO_CFG_PULLUP|GPIO_CFG_DEGLITCH|GPIO_PORT_PIOA|GPIO_PIN18)
+#define GPIO_BUTTON2 (GPIO_INPUT|GPIO_CFG_PULLUP|GPIO_CFG_DEGLITCH|GPIO_PORT_PIOA|GPIO_PIN19)
+
 /* SPI Chip Selects */
 
 /************************************************************************************

configs/sam3u-ek/src/up_leds.c

@@ -2,7 +2,7 @@
  * configs/sam3u-ek/src/up_leds.c
  * arch/arm/src/board/up_leds.c
  *
- *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -52,6 +52,8 @@
 #include "sam3u_internal.h"
 #include "sam3uek_internal.h"
 
+#ifdef CONFIG_ARCH_LEDS
+
 /****************************************************************************
  * Definitions
  ****************************************************************************/
@@ -70,14 +72,95 @@
 #  define ledvdbg(x...)
 #endif
 
+#define LED_OFF        0
+#define LED_ON         1
+#define LED_NOCHANGE   2
+#define LED_MASK       3
+
+#define LED0_SHIFT     0
+#define LED0_OFF       (LED_OFF << LED0_SHIFT)
+#define LED0_ON        (LED_ON << LED0_SHIFT)
+#define LED0_NOCHANGE  (LED_NOCHANGE << LED0_SHIFT)
+#define LED1_SHIFT     2
+#define LED1_OFF       (LED_OFF << LED1_SHIFT)
+#define LED1_ON        (LED_ON << LED1_SHIFT)
+#define LED1_NOCHANGE  (LED_NOCHANGE << LED1_SHIFT)
+#define LED2_SHIFT     4
+#define LED2_OFF       (LED_OFF << LED2_SHIFT)
+#define LED2_ON        (LED_ON << LED2_SHIFT)
+#define LED2_NOCHANGE  (LED_NOCHANGE << LED2_SHIFT)
+
 /****************************************************************************
  * Private Data
  ****************************************************************************/
 
+static const uint8_t g_ledon[8] =
+{
+	
+  (LED0_OFF     |LED1_OFF     |LED2_OFF),      /* LED_STARTED  */
+  (LED0_ON      |LED1_OFF     |LED2_ON),       /* LED_HEAPALLOCATE */
+  (LED0_OFF     |LED1_ON      |LED2_OFF),      /* LED_IRQSENABLED  */
+  (LED0_ON      |LED1_ON      |LED2_ON),       /* LED_STACKCREATED  */
+
+  (LED0_OFF     |LED1_OFF     |LED2_NOCHANGE), /* LED_INIRQ  */
+  (LED0_OFF     |LED1_NOCHANGE|LED2_OFF),      /* LED_SIGNAL  */
+  (LED0_ON      |LED1_NOCHANGE|LED2_NOCHANGE), /* LED_ASSERTION  */
+  (LED0_ON      |LED1_NOCHANGE|LED2_NOCHANGE)  /* LED_PANIC */
+};
+
+static const uint8_t g_ledoff[8] =
+{
+	
+  (LED0_OFF     |LED1_OFF     |LED2_OFF),      /* LED_STARTED (does not happen) */
+  (LED0_ON      |LED1_OFF     |LED2_ON),       /* LED_HEAPALLOCATE (does not happen) */
+  (LED0_OFF     |LED1_ON      |LED2_OFF),      /* LED_IRQSENABLED (does not happen) */
+  (LED0_ON      |LED1_ON      |LED2_ON),       /* LED_STACKCREATED (does not happen) */
+
+  (LED0_OFF     |LED1_ON      |LED2_NOCHANGE), /* LED_INIRQ  */
+  (LED0_OFF     |LED1_NOCHANGE|LED2_ON),       /* LED_SIGNAL */
+  (LED0_OFF     |LED1_NOCHANGE|LED2_NOCHANGE), /* LED_ASSERTION */
+  (LED0_OFF     |LED1_NOCHANGE|LED2_NOCHANGE)  /* LED_PANIC */
+};
+
 /****************************************************************************
  * Private Functions
  ****************************************************************************/
 
+/****************************************************************************
+ * Name: up_setled
+ ****************************************************************************/
+
+static void up_setled(uint16_t pinset, uint8_t state)
+{
+  /* Assume active high.  Initial state == 0 means active high */
+
+  bool polarity = ((pinset & GPIO_OUTPUT_SET) == 0);
+  switch (state)
+    {
+      case LED_OFF:
+        polarity = !polarity;
+
+      case LED_ON:
+        break;
+
+      case LED_NOCHANGE:
+      default:
+        return;
+    }
+  sam3u_gpiowrite(pinset, polarity);
+}
+
+/****************************************************************************
+ * Name: up_setleds
+ ****************************************************************************/
+
+static void up_setleds(uint8_t state)
+{
+  up_setled(GPIO_LED0, (state >> LED0_SHIFT) & LED_MASK);
+  up_setled(GPIO_LED1, (state >> LED1_SHIFT) & LED_MASK);
+  up_setled(GPIO_LED2, (state >> LED2_SHIFT) & LED_MASK);
+}
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -86,9 +169,11 @@
  * Name: up_ledinit
  ****************************************************************************/
 
-#ifdef CONFIG_ARCH_LEDS
 void up_ledinit(void)
 {
+  (void)sam3u_configgpio(GPIO_LED0);
+  (void)sam3u_configgpio(GPIO_LED1);
+  (void)sam3u_configgpio(GPIO_LED2);
 }
 
 /****************************************************************************
@@ -97,6 +182,7 @@ void up_ledinit(void)
 
 void up_ledon(int led)
 {
+  up_setleds(g_ledon[led & 7]);
 }
 
 /****************************************************************************
@@ -105,6 +191,7 @@ void up_ledon(int led)
 
 void up_ledoff(int led)
 {
+  up_setleds(g_ledoff[led & 7]);
 }
 
 #endif /* CONFIG_ARCH_LEDS */