X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp.git/blobdiff_plain/89adce76dd02f2076ec6de1c6b434bc1f29512f4..1222f338a23212010c7e2d0d7c3a2861e42fa8df:/avr/main.c

diff --git a/avr/main.c b/avr/main.c
index 34db6ef..af082a3 100644
--- a/avr/main.c
+++ b/avr/main.c
@@ -4,7 +4,6 @@
 
 #include "common.h"
 
-#include <util/delay.h>
 #include <avr/interrupt.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -19,8 +18,7 @@
 #include "cli.h"
 #include "env.h"
 #include "z180-serv.h"
-
-#define udelay(n)  _delay_us(n)
+#include "spi.h"
 
 static uint8_t mcusr;
 
@@ -111,8 +109,15 @@ void setup_avr(void)
 	TCCR3B = (0b01<<WGM32)|(0b001<<CS30); /* CTC Mode, Prescaler 1 */
 	TIMSK3 = _BV(OCIE3A);		/* Enable TC2.oca interrupt */
 
+	/* SPI as master */
+	PRR0 &= ~_BV(PRSPI);
+	SPI_DDR = (SPI_DDR & ~_BV(SPI_MISO))
+			| _BV(SPI_MOSI) | _BV(SPI_SCK) | _BV(SPI_SS);
+	SPI_PORT = (SPI_PORT & ~(_BV(SPI_MOSI) | _BV(SPI_SCK)))
+			| _BV(SPI_SS);
+
 	/* INT5, INT6: falling edge */
-	EICRB = (EICRB & ~((0b11 << ISC50) | (0b11 << ISC60))) | 
+	EICRB = (EICRB & ~((0b11 << ISC50) | (0b11 << ISC60))) |
 		(0b10 << ISC50) | (0b10 << ISC60);
 	/* Reset pending ints */
 	EIFR |= _BV(INTF5) | _BV(INTF6);
@@ -222,7 +227,6 @@ void main_loop(void)
 
 int main(void)
 {
-
 	setup_avr();
 	z80_setup_bus();