XMC4500-Relax: Add LED support.

configs/xmc4500-relax/src/xmc4500-relax.h

@@ -42,6 +42,8 @@
 
 #include <nuttx/config.h>
 
+#include "xmc4_gpio.h"
+
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
@@ -50,18 +52,30 @@
  *
  * The XMC4500 Relax Lite v1 board has two LEDs:
  *
- * LED1 P1.1 High output illuminates
+ * LED1 P1.1, Pad type A1+, High output illuminates
- * LED2 P1.0 High output illuminates
+ * LED2 P1.0, Pad type A1+ High output illuminates
  */
 
+#define GPIO_LED1    (GPIO_OUTPUT | GPIO_OUTPUT_PUSHPULL | \
+                      GPIO_PADA1P_STRONGSOFT | GPIO_PINCTRL_SOFTWARE | \
+                      GPIO_OUTPUT_CLEAR | GPIO_PORT1 | GPIO_PIN1)
+#define GPIO_LED2    (GPIO_OUTPUT | GPIO_OUTPUT_PUSHPULL | \
+                      GPIO_PADA1P_STRONGSOFT | GPIO_PINCTRL_SOFTWARE | \
+                      GPIO_OUTPUT_CLEAR | GPIO_PORT1 | GPIO_PIN0)
+
 /* BUTTONS
  *
  * The XMC4500 Relax Lite v1 board has two buttons:
  *
- * BUTTON1 P1.14 Low input sensed when button pressed
+ * BUTTON1 P1.14, Pad type A2, Low input sensed when button pressed
- * BUTTON2 P1.15 Low input sensed when button pressed
+ * BUTTON2 P1.15, Pad type A2, Low input sensed when button pressed
  */
 
+#define GPIO_BUTTON1 (GPIO_INPUT | GPIO_PINCTRL_SOFTWARE | \
+                      GPIO_PORT1 | GPIO_PIN14)
+#define GPIO_BUTTON2 (GPIO_INPUT | GPIO_PINCTRL_SOFTWARE | \
+                      GPIO_PORT1 | GPIO_PIN15)
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/

configs/xmc4500-relax/src/xmc4_autoleds.c

@@ -33,6 +33,30 @@
  *
  ****************************************************************************/
 
+/* The XMC4500 Relax Lite v1 board has two LEDs:
+ *
+ * LED1 P1.1 High output illuminates
+ * LED2 P1.0 High output illuminates
+ *
+ * These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
+ * defined.  In that case, the usage by the board port is defined in
+ * include/board.h and src/sam_autoleds.c. The LEDs are used to encode
+ * OS-related events as follows:
+ *
+ *   SYMBOL                  Meaning                     LED state
+ *                                                      LED2   LED1
+ *   ---------------------  --------------------------  ------ ------ */
+
+#define LED_STARTED       0 /* NuttX has been started   OFF    OFF    */
+#define LED_HEAPALLOCATE  0 /* Heap has been allocated  OFF    OFF    */
+#define LED_IRQSENABLED   0 /* Interrupts enabled       OFF    OFF    */
+#define LED_STACKCREATED  1 /* Idle stack created       ON     OFF    */
+#define LED_INIRQ         2 /* In an interrupt           No change    */
+#define LED_SIGNAL        2 /* In a signal handler       No change    */
+#define LED_ASSERTION     2 /* An assertion failed       No change    */
+#define LED_PANIC         3 /* The system has crashed   N/C  Blinking */
+#undef  LED_IDLE            /* MCU is is sleep mode      Not used     */
+
 /****************************************************************************
  * Included Files
  ****************************************************************************/
@@ -42,10 +66,93 @@
 #include <nuttx/board.h>
 #include <arch/board/board.h>
 
+#include "xmc4_gpio.h"
 #include "xmc4500-relax.h"
 
 #ifdef CONFIG_ARCH_LEDS
 
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static void board_led1_on(int led)
+{
+  bool ledon = false;
+
+  switch (led)
+    {
+      case 0:           /* LED1=OFF */
+        break;
+
+      case 1:           /* LED1=ON */
+        ledon  = true;
+        break;
+
+      case 2:           /* LED1=N/C */
+      case 3:           /* LED1=N/C */
+      default:
+        return;
+    }
+
+  xmc4_gpio_write(GPIO_LED1, ledon);
+}
+
+static void board_led2_on(int led)
+{
+  bool ledon = false;
+
+  switch (led)
+    {
+      case 0:           /* LED2=OFF */
+      case 1:           /* LED2=OFF */
+        break;
+
+      case 3:           /* LED2=ON */
+        ledon  = true;
+        break;
+
+      case 2:           /* LED2=N/C */
+      default:
+        return;
+    }
+
+  xmc4_gpio_write(GPIO_LED2, ledon);
+}
+
+void board_led1_off(int led)
+{
+  switch (led)
+    {
+      case 0:           /* LED1=OFF */
+      case 1:           /* LED1=OFF */
+        break;
+
+      case 2:           /* LED1=N/C */
+      case 3:           /* LED1=N/C */
+      default:
+        return;
+    }
+
+  xmc4_gpio_write(GPIO_LED1, false);
+}
+
+void board_led2_off(int led)
+{
+  switch (led)
+    {
+      case 0:           /* LED2=OFF */
+      case 1:           /* LED2=OFF */
+      case 3:           /* LED2=OFF */
+        break;
+
+      case 2:           /* LED2=N/C */
+      default:
+        return;
+    }
+
+   xmc4_gpio_write(GPIO_LED2, false);
+}
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -56,7 +163,10 @@
 
 void board_autoled_initialize(void)
 {
-#warning Missing logic
+   /* Configure LED1-2 GPIOs for output */
+
+  (void)xmc4_gpio_config(GPIO_LED1);
+  (void)xmc4_gpio_config(GPIO_LED2);
 }
 
 /****************************************************************************
@@ -65,7 +175,8 @@ void board_autoled_initialize(void)
 
 void board_autoled_on(int led)
 {
-#warning Missing logic
+  board_led1_on(led);
+  board_led2_on(led);
 }
 
 /****************************************************************************
@@ -74,7 +185,8 @@ void board_autoled_on(int led)
 
 void board_autoled_off(int led)
 {
-#warning Missing logic
+  board_led1_off(led);
+  board_led2_off(led);
 }
 
 #endif /* CONFIG_ARCH_LEDS */

configs/xmc4500-relax/src/xmc4_userleds.c

@@ -41,6 +41,8 @@
 #include <debug.h>
 
 #include <arch/board/board.h>
+
+#include "xmc4_gpio.h"
 #include "xmc4500-relax.h"
 
 /****************************************************************************
@@ -53,7 +55,10 @@
 
 void board_userled_initialize(void)
 {
-#warning Missing logic
+   /* Configure LED1-2 GPIOs for output */
+
+  (void)xmc4_gpio_config(GPIO_LED1);
+  (void)xmc4_gpio_config(GPIO_LED2);
 }
 
 /****************************************************************************
@@ -62,7 +67,22 @@ void board_userled_initialize(void)
 
 void board_userled(int led, bool ledon)
 {
-#warning Missing logic
+  gpioconfig_t ledcfg;
+
+  if (led == BOARD_LED1)
+    {
+      ledcfg = GPIO_LED1;
+    }
+  else if (led == BOARD_LED2)
+    {
+      ledcfg = GPIO_LED2;
+    }
+  else
+    {
+      return;
+    }
+
+  xmc4_gpio_write(ledcfg, ledon);
 }
 
 /****************************************************************************
@@ -71,5 +91,11 @@ void board_userled(int led, bool ledon)
 
 void board_userled_all(uint8_t ledset)
 {
-#warning Missing logic
+  bool ledon;
+
+  ledon = ((ledset & BOARD_LED1_BIT) != 0);
+  xmc4_gpio_write(GPIO_LED1, ledon);
+
+  ledon = ((ledset & BOARD_LED2_BIT) != 0);
+  xmc4_gpio_write(GPIO_LED2, ledon);
 }