add BRIGHT/DIM commands support

KEYWORDS.txt

@@ -16,3 +16,12 @@ RFXmeter	KEYWORD2
 RFXsensor	KEYWORD2
 x10Switch	KEYWORD2
 x10Security	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+
+ON    LITERAL1
+OFF   LITERAL1
+BRIGHT  LITERAL1
+DIM   LITERAL1

x10rf.cpp

@@ -178,8 +178,11 @@ void x10rf::x10Switch(char house_code, uint8_t unit_code, uint8_t command){
 	x10buff[0] = x10buff[0] << 4; // House code goes into the upper nibble
 
 	switch(command) {
-		case 0: x10buff[2] = (x10buff[2] | 0x20); break;
-		case 1: x10buff[2] = (x10buff[2] & 0x20); break;
+	  case ON:
+		case OFF:
+		case BRIGHT:
+		case DIM:
+			x10buff[2] = command; break;
 	}
 	// Set unit number
 	unit_code = unit_code - 1;

x10rf.h

@@ -15,6 +15,11 @@ Tested on a TI Stellarpad (LM4F120H5QR) and Energia 0101E0010. This should also
 #ifndef x10rf_h
 #define x10rf_h
 
+#define ON  0x00
+#define OFF 0x20
+#define BRIGHT 0x88
+#define DIM 0x98
+
 #include <stdlib.h>
 
 #if defined(ARDUINO) && ARDUINO >= 100