apps/graphics/ft80x: Correct time units in usleep call.

graphics/ft80x/ft80x_coproc.c

@@ -50,6 +50,13 @@
 #include "graphics/ft80x.h"
 #include "ft80x.h"
 
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define HALF_SECOND  (500 * 1000)  /* 500 milliseconds (units = microseconds) */
+#define FIVE_SECONDS (5 * 2)       /* 5 seconds (units = half seconds) */
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -86,7 +93,7 @@ int ft80x_coproc_waitlogo(int fd)
    * seconds elapses.
    */
 
-  for (elapsed = 0; elapsed < 10; elapsed++)
+  for (elapsed = 0; elapsed < FIVE_SECONDS; elapsed++)
     {
       /* Read REG_CMD_WRITE */
 
@@ -122,7 +129,7 @@ int ft80x_coproc_waitlogo(int fd)
 
       /* Wait for a half a second */
 
-      (void)usleep(500 * 1000 * 1000);
+      (void)usleep(HALF_SECOND);
     }
 
   ft80x_err("ERROR:  Timed out!  Last head/tail = %u/%u\n", head, tail);

graphics/ft80x/ft80x_regs.c

@@ -51,7 +51,7 @@
 #include "ft80x.h"
 
 /****************************************************************************
- * Pre-processor Defitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
 /* Sleep for 10 MS between each REG_DLSWAP poll */