X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/rsbs2/blobdiff_plain/19d56e392f87341e7abb26639e9b257aa78d4c92..70947537f938b81ec2fa42debc8086a829c995bd:/bmc/chassis.c

diff --git a/bmc/chassis.c b/bmc/chassis.c
index 1b6822e..e2d26f6 100644
--- a/bmc/chassis.c
+++ b/bmc/chassis.c
@@ -1,4 +1,5 @@
 #include <avr/io.h>
+#include <avr/interrupt.h>
 #include <stdio.h>
 
 #include "chassis.h"
@@ -20,12 +21,22 @@
 #define _CDDR(port) __CDDR(port)
 #define CDDR _CDDR(CHASSISPORT)
 
+static volatile int power_cnt = 0;
+static volatile int reset_cnt = 0;
+
 static void chassis_set_pins(uint8_t pins, uint8_t state);
 
 void chassis_init()
 {
 	chassis_set_pins((1<<POWER_PIN) | (1<<RESET_PIN), 0);
 	CDDR |= ((1<<POWER_PIN) | (1<<RESET_PIN));
+
+	/* About 1ms */
+	OCR0 = ((F_CPU/64)/1000) - 1;
+
+	TCCR0 = ((1<<WGM01) | (1<<CS01) | (1<<CS00)); /* CTC, Prescaler 64 */
+	TIMSK |= (1<<OCIE0);
+
 }
 
 static void chassis_set_pins(uint8_t pins, uint8_t state)
@@ -43,26 +54,26 @@ static void chassis_set_pins(uint8_t pins, uint8_t state)
 
 static void chassis_power(int msec)
 {
-	volatile int i;
+	uint8_t old_SREG = SREG;
 
 	chassis_set_pins((1<<POWER_PIN), 1);
 
-	/* FIXME */
-	for(i = 0; i < (msec<<2); i++);
-
-	chassis_set_pins((1<<POWER_PIN), 0);
+	cli();
+	if (!power_cnt)
+		power_cnt = msec;
+	SREG = old_SREG;
 }
 
 static void chassis_reset(int msec)
 {
-	volatile int i;
+	uint8_t old_SREG = SREG;
 
 	chassis_set_pins((1<<RESET_PIN), 1);
 
-	/* FIXME */
-	for(i = 0; i < (msec<<2); i++);
-
-	chassis_set_pins((1<<RESET_PIN), 0);
+	cli();
+	if (!reset_cnt)
+		reset_cnt = msec;
+	SREG = old_SREG;
 }
 
 void chassis_control(unsigned char action)
@@ -91,3 +102,19 @@ void chassis_control(unsigned char action)
 			break;
 	}
 }
+
+ISR(TIMER0_COMP_vect)
+{
+	if (power_cnt) {
+		power_cnt--;
+
+		if (!power_cnt)
+			chassis_set_pins((1<<POWER_PIN), 0);
+	}
+	if (reset_cnt) {
+		reset_cnt--;
+
+		if (!reset_cnt)
+			chassis_set_pins((1<<RESET_PIN), 0);
+	}
+}