diff --git a/boop/boop_rom.bin b/boop/boop_rom.bin
index 07d71ad..4e93cbe 100644
Binary files a/boop/boop_rom.bin and b/boop/boop_rom.bin differ
diff --git a/boop/cc1100/cc1100.c b/boop/cc1100/cc1100.c
index 4495d30..4874ca2 100644
--- a/boop/cc1100/cc1100.c
+++ b/boop/cc1100/cc1100.c
@@ -176,6 +176,8 @@ unsigned char cc1100_write(unsigned char addr,unsigned char* data, unsigned char
 	unsigned short i;
 	unsigned char status;
 	unsigned char x;
+
+	(void)(x);
 	
 	FIOCLR0 = CS1;
 	while (FIOPIN0 & MISO1);
@@ -197,8 +199,10 @@ unsigned char cc1100_write(unsigned char addr,unsigned char* data, unsigned char
 unsigned char cc1100_write1(unsigned char addr,unsigned char data) {
 
 	unsigned char status;
-	unsigned char x;
+	volatile unsigned char x=0;
 	
+	(void)(x);
+
 	FIOCLR0 = CS1;
 	while (FIOPIN0 & MISO1);
 	SSPDR = (addr | WRITE);
diff --git a/boop/cc1100/fs20.c b/boop/cc1100/fs20.c
index f029998..2f4de50 100644
--- a/boop/cc1100/fs20.c
+++ b/boop/cc1100/fs20.c
@@ -51,7 +51,7 @@ void fs20_decoder(void) {
 	unsigned char FS20inbit = 0;
 	unsigned char FS20protocol = PROTOCOL_UNKNOWN;
 	unsigned short tempbyte = 0;
-	unsigned char finish = 0;
+//	unsigned char finish = 0;
 	
 	unsigned long pulse = 0;
 	unsigned long space = 0;
@@ -77,7 +77,7 @@ void fs20_decoder(void) {
 	cc1100_strobe(SRX);
 	
 	serial_puts("\n\r");
-	
+
 	while(KEY_Exit) {};
 	while(!KEY_Exit)
 	{
@@ -188,7 +188,7 @@ void fs20_decoder(void) {
 				}
 				
 				if(FS20protocol == PROTOCOL_WEATHER) {
-					if(FS20_BETWEEN(pulse, 685, 1020) && FS20_BETWEEN(space, 200, 533))
+				  if(FS20_BETWEEN(pulse, 685, 1020) && FS20_BETWEEN(space, 200, 533))
 						FS20inbit = 0;
 					else if(FS20_BETWEEN(pulse, 200, 533) && FS20_BETWEEN(space, 685, 1020))
 						FS20inbit = (1<<3);
@@ -215,7 +215,9 @@ void fs20_decoder(void) {
 								FS20bitcounter = 0;	
 							}
 							else {
-								tempbyte = (tempbyte>>=1) | FS20inbit;
+								//tempbyte = (tempbyte>>=1) | FS20inbit;
+							  tempbyte>>=1;
+							  tempbyte |= FS20inbit;
 								if(FS20bitcounter++ == 8) {
 									FS20inbyte[FS20bytecounter] = tempbyte;
 									tempbyte = 0;
@@ -263,9 +265,7 @@ void fs20_decoder(void) {
 										FS20bytecounter++;
 										FS20parity = 0;
 										if(FS20bytecounter == 0x0a) {	//packet full received
-											unsigned char dec[8];
 
-											dec[0] = FS20inbyte[1] ^ 0x89;
 											for(x=9;x>1;x--) {
 												FS20inbyte[x] = (FS20inbyte[x-1] + 0x24) ^ FS20inbyte[x];
 											}
@@ -329,7 +329,7 @@ void fs20_decoder(void) {
 					}
 
 					serial_puts("\n\r");
-					finish = 0;
+					//finish = 0;
 					FS20bytecounter = 0;
 					FS20protocol = PROTOCOL_UNKNOWN;
 				}
diff --git a/boop/display/lcd.c b/boop/display/lcd.c
index 0b1a02c..c186d44 100644
--- a/boop/display/lcd.c
+++ b/boop/display/lcd.c
@@ -372,8 +372,9 @@ void __attribute__ ((section (".text.fastcode"))) _do_rcuAlpha (
 void __attribute__ ((section (".text.fastcode"))) _do_rcuS (
    unsigned char x, unsigned char y, unsigned char m)
 {
-	unsigned char q;
+	volatile unsigned char q=0;
 	
+	(void)(q);
 	
 	if((x > BORDER_RIGHT))// | (x < BORDER_LEFT))
 		return;
@@ -429,7 +430,7 @@ void __attribute__ ((section (".text.fastcode"))) _do_rcuS (
 void __attribute__ ((section(".text.fastcode"))) _draw_block(unsigned char x, unsigned char y, unsigned char w, unsigned char h, unsigned char c, unsigned char m)
 {
 	unsigned char q,s;
-	unsigned char yy,ss,vv,ww,xx;
+	unsigned char yy,vv,ww,xx;
 	unsigned char segm;
 	is_drawing++;
 
@@ -441,7 +442,6 @@ void __attribute__ ((section(".text.fastcode"))) _draw_block(unsigned char x, un
 	if(h)
 	{
 		yy = h;
-		ss = y >> 3;
 		vv = y & 0x07;
 	
 		ww = yy & 0x07;
@@ -555,7 +555,7 @@ void __attribute__ ((section(".text.fastcode"))) _draw_hline(unsigned char x, un
 void __attribute__ ((section(".text.fastcode"))) _draw_vline(unsigned char x, unsigned char y, unsigned char l, unsigned char c, unsigned char m)
 {
 	unsigned char s;
-	unsigned char yy,ss,vv,ww,xx;
+	unsigned char yy,vv,ww,xx;
 	unsigned char segm;
 	is_drawing++;
 
@@ -567,7 +567,6 @@ void __attribute__ ((section(".text.fastcode"))) _draw_vline(unsigned char x, un
 		
 		
 		yy = l;
-		ss = y >> 3;
 		vv = y & 0x07;
 	
 		ww = yy & 0x07;
diff --git a/boop/flash/bfs.c b/boop/flash/bfs.c
index 92e75fd..8a9e5c7 100644
--- a/boop/flash/bfs.c
+++ b/boop/flash/bfs.c
@@ -672,13 +672,13 @@ unsigned char readByte(unsigned long ByteAddr)
 unsigned short readWord(unsigned long WordAddr)
 {
 	//addr = unsigned short address
-	int Offset;
+	//int Offset;
 	unsigned short Word;
 
 	//ASSERT((WordAddr * 2) >= FLASH1_BASE);
 	//ASSERT((WordAddr * 2) < (FLASH1_BASE + FLASH_SIZE));
 
-	Offset = (WordAddr * 2) - FLASH1_BASE;
+	//Offset = (WordAddr * 2) - FLASH1_BASE;
 
 	Word = *((unsigned short *)(WordAddr<<1));
 
diff --git a/boop/gui/testmenu.c b/boop/gui/testmenu.c
index 792d712..e5af164 100644
--- a/boop/gui/testmenu.c
+++ b/boop/gui/testmenu.c
@@ -907,10 +907,8 @@ void test_irrec(void) {
 }
 
 void erase_flash1(void)
-{	int x;
-
-	x = eraseFlash(1);
-	
+{
+	eraseFlash(1);
 }
 
 void test_sid(void) {
@@ -1062,8 +1060,7 @@ void test_sid(void) {
 }
 
 void test_click(FORM* form, CONTROL* control) {
-	unsigned char x;
-	x=msgbox(45,BC_OKOnly | BC_DefaultButton1,control->caption);
+	msgbox(45,BC_OKOnly | BC_DefaultButton1,control->caption);
 	form_draw(form);
 }
 
@@ -1076,8 +1073,7 @@ void test3_click(FORM* form, CONTROL* control) {
 }
 
 void test_numbox(FORM* form, CONTROL* control) {
-	unsigned char x;
-	x=msgbox(30,BC_OKOnly | BC_DefaultButton1,"numbox click");
+	msgbox(30,BC_OKOnly | BC_DefaultButton1,"numbox click");
 	form_draw(form);
 }
 
@@ -1091,14 +1087,12 @@ void test_numchange(FORM* form, CONTROL* control) {
 }
 
 void test_change(FORM* form, CONTROL* control) {
-	unsigned short x;
-	x=msgbox(30,BC_OKOnly | BC_DefaultButton1,"geaendert");
+	msgbox(30,BC_OKOnly | BC_DefaultButton1,"geaendert");
 	form_draw(form);
 }
 
 void formload (FORM* form)
 {
-	unsigned char x;
 	struct RFendpoint_* cur_ep;
 	
 	cur_ep = openEP(&(form->controls[7])->tag1, 1, packet_RFenc);
@@ -1110,12 +1104,11 @@ void formload (FORM* form)
 		RF_changestate(RFrx);
 	}
 	
-	x=msgbox(50,BC_OKOnly | BC_DefaultButton1,"Form open");
+	msgbox(50,BC_OKOnly | BC_DefaultButton1,"Form open");
 }
 
 void formclose (FORM* form)
 {
-	unsigned char x;
 	
 	if (form->tag)
 	{
@@ -1123,7 +1116,7 @@ void formclose (FORM* form)
 		RF_changestate(RFwor);
 	}
 
-	x=msgbox(50,BC_OKOnly | BC_DefaultButton1,"Form close");
+	msgbox(50,BC_OKOnly | BC_DefaultButton1,"Form close");
 	
 }
 
diff --git a/boop/rtc/rtc.c b/boop/rtc/rtc.c
index d176f96..271e201 100644
--- a/boop/rtc/rtc.c
+++ b/boop/rtc/rtc.c
@@ -160,7 +160,7 @@ void printTime (unsigned char x, unsigned char y, struct time_* t, unsigned char
 void printDate (unsigned char x, unsigned char y, struct date_* d, unsigned char format)
 {
 	unsigned char f;
-	char s[16];
+	char s[17];
 
 	f=activefont;
 	set_font(SMALLFONT);
diff --git a/boop/serial/serial.c b/boop/serial/serial.c
index de8dc65..e67e5ef 100644
--- a/boop/serial/serial.c
+++ b/boop/serial/serial.c
@@ -52,7 +52,9 @@ extern void uart0_irq(void);
  */
 int serial_flush_input(void)
 {
-	volatile unsigned int tmp;
+	volatile unsigned int tmp=0;
+
+	(void)(tmp);
 
 	/* keep on reading as long as the receiver is not empty */
 	while(RX_DATA(U0LSR)) {