atusb/fw/: moved timer initialization to board_app.c as well

- board.c (board_init), board_app.h (timer_init), board_app.c
  (timer_init): moved timer initialization from board_init to
  new function timer_init
- atusb.c (main): call timer_init

atusb/fw/atusb.c

@@ -34,6 +34,7 @@ int main(void)
 
 	usb_init();
 	ep0_init();
+	timer_init();
 
 	while (1) {
 		usb_poll();

atusb/fw/board.c

@@ -135,10 +135,5 @@ void board_init(void)
 	CLKPR = 1 << CLKPCE;
 	CLKPR = 0;
 
-	/* configure timer 1 as a free-running CLK counter */
-
-	TCCR1A = 0;
-	TCCR1B = 1 << CS10;
-
 	get_sernum();
 }

atusb/fw/board.h

@@ -79,6 +79,7 @@ void panic(void);
 
 void timer_poll(void);
 uint64_t timer_read(void);
+void timer_init(void);
 
 int gpio(uint8_t port, uint8_t data, uint8_t dir, uint8_t mask, uint8_t *res);
 

atusb/fw/board_app.c

@@ -74,6 +74,15 @@ uint64_t timer_read(void)
 }
 
 
+void timer_init(void)
+{
+	/* configure timer 1 as a free-running CLK counter */
+
+	TCCR1A = 0;
+	TCCR1B = 1 << CS10;
+}
+
+
 int gpio(uint8_t port, uint8_t data, uint8_t dir, uint8_t mask, uint8_t *res)
 {
 	switch (port) {