From: Fredrik Tolf <fredrik@dolda2000.com>
Date: Mon, 2 Jul 2007 21:24:50 +0000 (+0000)
Subject: Cycle the display from the Timer2 interrupt.
X-Git-Url: http://dolda2000.com/gitweb/?p=kokare.git;a=commitdiff_plain;h=8c536798197a233e09c8d146581b434cb7c954e5

Cycle the display from the Timer2 interrupt.
---

diff --git a/kokare.c b/kokare.c
index 35e5a01..131015d 100644
--- a/kokare.c
+++ b/kokare.c
@@ -31,7 +31,6 @@ uint8_t font[16] = {
     SEGA | SEGE | SEGF | SEGG,
 };
 /* LED */
-#define LCDELAY 1000
 uint8_t dsp[2] = {0, 0};
 char leda = 0;
 char ledc = 0;
@@ -67,8 +66,9 @@ volatile char trdelay = 0;
 void init(void)
 {
     /* Timer init
-     * Timer 0 cycles timing sensitive subsystems
+     * Timer 0 cycles the Triac
      * Timer 1 is used for global timing
+     * Timer 2 cycles the LED display
      */
     OCR0A = 100;
     TCCR0A = 2;
@@ -77,6 +77,10 @@ void init(void)
     TCCR1A = 0;
     TCCR1B = 1;
     TIMSK1 = 1;
+    OCR2A = 16;
+    TCCR2A = 2;
+    TCCR2B = 4;
+    TIMSK2 = 2;
     
     /*
      * B0..2 = Pulse sensor
@@ -151,33 +155,27 @@ unsigned long getticks(void)
 
 void ledcycle(void)
 {
-    static uint16_t last = 0;
     uint8_t c, d, v;
     
-    if(TCNT1 - last > LCDELAY) {
-	last = TCNT1;
-	if(++leda >= 8) {
-	    leda = 0;
-	    if(++ledc >= 2)
-		ledc = 0;
-	}
-	if(dsp[ledc] & (1 << leda)) {
-	    if(leda < 6) {
-		c = 1 << leda;
-		d = 0;
-	    } else {
-		c = 0;
-		d = 0x10 << (leda - 6);
-	    }
-	    d |= ledc?0x40:0x80;
+    if(++leda >= 8) {
+	leda = 0;
+	if(++ledc >= 2)
+	    ledc = 0;
+    }
+    if(dsp[ledc] & (1 << leda)) {
+	if(leda < 6) {
+	    c = 1 << leda;
+	    d = 0;
 	} else {
-	    c = d = 0;
+	    c = 0;
+	    d = 0x10 << (leda - 6);
 	}
-	cli();
-	PORTC = c;
-	PORTD = (PORTD & 0x0f) | d;
-	sei();
+	d |= ledc?0x40:0x80;
+    } else {
+	c = d = 0;
     }
+    PORTC = c;
+    PORTD = (PORTD & 0x0f) | d;
 }
 
 void tempcycle(void)
@@ -268,7 +266,6 @@ int main(void)
 
     while(1) {
 	mnow = getticks();
-	ledcycle();
 	tempcycle();
 	calcavg();
 	convcycle();
@@ -453,6 +450,11 @@ ISR(SIG_OUTPUT_COMPARE0A)
     }
 }
 
+ISR(SIG_OUTPUT_COMPARE2A)
+{
+    ledcycle();
+}
+
 ISR(SIG_OVERFLOW1)
 {
     of = 1;