From 10515a80e2ba88b54c7c8766a0c42c5082985c90 Mon Sep 17 00:00:00 2001
From: David Lamparter <equinox@diac24.net>
Date: Sun, 10 Mar 2013 06:16:57 +0100
Subject: dim: use tracked state

---
 dim.c       | 109 +++++++++++++++++++++++++++++++++++++++++++-----------------
 lightctrl.c |   3 --
 2 files changed, 79 insertions(+), 33 deletions(-)

diff --git a/dim.c b/dim.c
index 8a40148..78ae5a3 100644
--- a/dim.c
+++ b/dim.c
@@ -1,39 +1,88 @@
-static uint8_t dim_state;
-static int8_t dim_dir;
+struct switchcfg {
+	uint8_t targets0[2];
+	uint8_t targets1[2];
+	uint8_t lastclick;
+	int8_t dir;
+	uint8_t tgt1active;
+};
 
-#define DALI_ADDR	0xfe00
+#define T_DOUBLECLICK 75
+struct switchcfg sw;
+
+static uint8_t tast_curstate(void)
+{
+	uint16_t sum = 0;
+	sum += target[sw.targets0[0]];
+	sum += target[sw.targets0[1]];
+	if (sw.tgt1active) {
+		sum += target[sw.targets1[0]];
+		sum += target[sw.targets1[1]];
+		sum++;
+		sum >>= 1;
+	}
+	sum++;
+	sum >>= 1;
+	return sum;
+}
+
+static void tast_applystate(uint8_t all, uint8_t target)
+{
+	target_set(sw.targets0[0], target);
+	target_set(sw.targets0[1], target);
+	if (all) {
+		target_set(sw.targets1[0], target);
+		target_set(sw.targets1[1], target);
+	}
+}
 
 static void tast_click(void)
 {
+	uint8_t ltarget, all;
+
 	uart_puts("# click\n");
-	if (dim_state) {
-		dim_state = 0;
-		dali_send(DALI_ADDR | 0x100);
-		PORTD |= (1 << D_LED1);
+	if (sw.lastclick < T_DOUBLECLICK) {
+		sw.lastclick = T_DOUBLECLICK;
+		sw.tgt1active = 1;
+		sw.dir = -1;
+		ltarget = 0xff;
+		all = 1;
 	} else {
-		dim_state = 0xfe;
-		dali_send(DALI_ADDR | 0x108);
-		dali_send(DALI_ADDR | dim_state);
-		PORTD &= ~(1 << D_LED1);
+		sw.lastclick = 0;
+		ltarget = tast_curstate();
+		if (ltarget) {
+			sw.tgt1active = 0;
+			sw.dir = +1;
+			ltarget = 0;
+			all = 1;
+		} else {
+			sw.dir = -1;
+			ltarget = 0xff;
+			all = 0;
+		}
 	}
+	tast_applystate(all, ltarget);
 }
 
 static void do_tick(void)
 {
 	static uint8_t history;
 	static uint8_t downctr;
+	uint8_t state;
 
 	history <<= 1;
 	history |= (PIND >> D_TAST) & 1;
 
+	if (sw.lastclick < 0xff)
+		sw.lastclick++;
+
 	if (history & 0x3f) {
 		if (!downctr)
 			return;
 		if (downctr < 60) {
-			PORTD &= ~(1 << D_LED1);
+			//PORTD &= ~(1 << D_LED1);
 			tast_click();
 		} else
-			dim_dir = -dim_dir;
+			sw.dir = -sw.dir;
 
 		downctr = 0;
 		return;
@@ -42,33 +91,33 @@ static void do_tick(void)
 	if (downctr < 60) {
 		PORTD |= (1 << D_LED1);
 		downctr++;
-	} else if (downctr == 60) {
-		if (!dim_state) {
-			dali_send(DALI_ADDR | 0x108);
-			dim_dir = 1;
-		}
-		downctr++;
 	} else {
+		state = tast_curstate();
 		PORTD &= ~(1 << D_LED1);
 
 		uart_puts("\t# dim ");
-		uart_puthex(dim_state);
+		uart_puthex(state);
 		uart_puts(" ");
-		uart_puthex(dim_dir);
+		uart_puthex(sw.dir);
 		uart_puts("\n");
-		for (int i = 0; i < 3; i++) {
-			dim_state += dim_dir;
-			if (dim_state == 0xff)
-				dim_state = 0xfe;
-			if (dim_state < 0x55)
-				dim_state = 0x55;
+		for (int i = 0; i < 6; i++) {
+			state += sw.dir;
+			if (state == 0xff)
+				state = 0xfe;
+			if (state < 0x55)
+				state = 0x55;
 		}
-		dali_send(DALI_ADDR | dim_state);
+		tast_applystate(sw.tgt1active, state);
 	}
 }
 
 static void dim_init(void)
 {
-	dim_state = 0;
-	dim_dir = 1;
+	sw.targets0[0] = 0x03;
+	sw.targets0[1] = 0x04;
+	sw.targets1[0] = 0x01;
+	sw.targets1[1] = 0x02;
+	sw.lastclick = 0xff;
+	sw.dir = 1;
+	sw.tgt1active = 0;
 }
diff --git a/lightctrl.c b/lightctrl.c
index 5b71fff..e1a4916 100644
--- a/lightctrl.c
+++ b/lightctrl.c
@@ -336,9 +336,6 @@ int main(void)
 			uart_puthex16(dalistat.manchester);
 			uart_puts(" mch-err\n");
 			break;
-		case 1536:
-			can_send(CANA_LIGHT_F(0, CANA_DALI_BASE + 0x3f), 1, (uint8_t *)&dim_state);
-			break;
 		}
 	}
 }
-- 
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