atusb/fw2/: move board-specific items to board-specific file

- io.h: renamed to board.h
- Makefile (OBJS): added board.o
- atusb.c (reset_rf): moved to board.c
- board.h (reset_rf): give reset_rf a proper declaration
- atusb.c, ep.c, spi.c: include board.h instead of io.h

atusb/fw2/Makefile

@@ -16,7 +16,7 @@ USB_OBJS = $(FreakUSB)/usb/usb.o $(FreakUSB)/usb/ctrl.o \
   $(FreakUSB)/usb/usb_buf.o \
   $(FreakUSB)/hw/at90usbxx2/ep.o $(FreakUSB)/hw/at90usbxx2/hw.o \
   $(FreakUSB)/hw/at90usbxx2/isr.o
-OBJS = atusb.o spi.o descr.o ep0.o $(USB_OBJS)
+OBJS = atusb.o board.o spi.o descr.o ep0.o $(USB_OBJS)
 
 CFLAGS += -I../fw/include \
 	  -I$(FreakUSB)/usb -I$(FreakUSB)/hw/at90usbxx2 \

atusb/fw2/atusb.c

@@ -8,28 +8,13 @@
 #include "freakusb.h"
 
 #include "at86rf230.h"
-#include "io.h"
+#include "board.h"
 #include "spi.h"
 
 
-void reset_rf(void);
 void ep0_init(void);
 
 
-void reset_rf(void)
-{
-	/* AT86RF231 data sheet, 12.4.13, reset pulse width: 625 ns (min) */
-
-	CLR(nRST_RF);
-	_delay_us(1);
-	SET(nRST_RF);
-
-	/* 12.4.14: SPI access latency after reset: 625 ns (min) */
-
-	_delay_us(1);
-}
-
-
 int main(void)
 {
 	/* We start with a 1 MHz/8 clock. Disable the prescaler. */

atusb/fw2/board.c

@@ -0,0 +1,20 @@
+#include <avr/io.h>
+
+#define F_CPU   8000000UL
+#include <util/delay.h>
+
+#include "board.h"
+
+
+void reset_rf(void)
+{
+	/* AT86RF231 data sheet, 12.4.13, reset pulse width: 625 ns (min) */
+
+	CLR(nRST_RF);
+	_delay_us(1);
+	SET(nRST_RF);
+
+	/* 12.4.14: SPI access latency after reset: 625 ns (min) */
+
+	_delay_us(1);
+}

atusb/fw2/board.h

@@ -1,5 +1,5 @@
-#ifndef IO_H
-#define	IO_H
+#ifndef BOARD_H
+#define	BOARD_H
 
 #define	LED_PORT	B
 #define	LED_BIT		  6
@@ -36,4 +36,7 @@
 #define	IN(n)		IN_1(n##_PORT, n##_BIT)
 #define	OUT(n)		OUT_1(n##_PORT, n##_BIT)
 
-#endif /* !IO_H */
+
+void reset_rf(void);
+
+#endif /* !BOARD_H */

atusb/fw2/ep0.c

@@ -27,7 +27,7 @@
 #include "at86rf230.h"
 #include "atusb/ep0.h"
 //#include "version.h"
-#include "io.h"
+#include "board.h"
 #include "spi.h"
 
 
@@ -35,9 +35,6 @@
 static const char *build_date = "today";
 static unsigned build_number = 42;
 
-extern void reset_rf(void);
-
-
 #define debug(...)
 #define error(...)
 

atusb/fw2/spi.c

@@ -2,7 +2,7 @@
 
 #include <avr/io.h>
 
-#include "io.h"
+#include "board.h"
 #include "spi.h"