configs/tm4c1294-launchpad/src/tm4c_bringup.c: Enables /dev/userleds for tm4c1294-launchpad by calling userled_lower_initialize() in tm4c_bringup().

configs/tm4c1294-launchpad/src/tm4c1294-launchpad.h

@@ -111,6 +111,13 @@
 #define GPIO_LED_D3   (GPIO_FUNC_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORTF | GPIO_PIN_4)
 #define GPIO_LED_D4   (GPIO_FUNC_OUTPUT | GPIO_VALUE_ZERO | GPIO_PORTF | GPIO_PIN_0)
 
+/* Check if we have the LED driver */
+
+#define HAVE_USERLED_DRIVER   1
+#if !defined(CONFIG_USERLED) || !defined(CONFIG_USERLED_LOWER)
+#  undef HAVE_USERLED_DRIVER
+#endif
+
 /* Button definitions ***************************************************************/
 /* There are four push buttons on the board. Two of them are user controllable.
  * The others are RESET and WAKE

configs/tm4c1294-launchpad/src/tm4c_bringup.c

@@ -58,6 +58,10 @@
 #include "tiva_qencoder.h"
 #include "tm4c1294-launchpad.h"
 
+#ifdef HAVE_USERLED_DRIVER
+#  include <nuttx/leds/userled.h>
+#endif
+
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
@@ -358,6 +362,18 @@ int tm4c_bringup(void)
     }
 #endif
 
+#ifdef HAVE_USERLED_DRIVER
+  /* Register the LED driver */
+
+  ret = userled_lower_initialize("/dev/userleds");
+  if (ret != OK)
+    {
+      syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n",
+             ret);
+      return ret;
+    }
+#endif
+
   UNUSED(ret);
   return OK;
 }