1 files changed, 74 insertions, 0 deletions
diff --git a/dim.c b/dim.c
new file mode 100644
index 0000000..6414d5f
--- /dev/null
+++ b/dim.c
@@ -0,0 +1,74 @@
+static uint8_t dim_state;
+static int8_t dim_dir;
+
+#define DALI_ADDR	0xfe00
+
+static void tast_click(void)
+{
+	uart_puts("# click\n");
+	if (dim_state) {
+		dim_state = 0;
+		dali_send(0xff00);
+		PORTD |= (1 << D_LED1);
+	} else {
+		dim_state = 0xfe;
+		dali_send(DALI_ADDR | 0x108);
+		dali_send(DALI_ADDR | dim_state);
+		PORTD &= ~(1 << D_LED1);
+	}
+}
+
+static void do_tick(void)
+{
+	static uint8_t history;
+	static uint8_t downctr;
+
+	history <<= 1;
+	history |= (PIND >> D_TAST) & 1;
+
+	if (history & 0x3f) {
+		if (!downctr)
+			return;
+		if (downctr < 60) {
+			PORTD &= ~(1 << D_LED1);
+			tast_click();
+		} else
+			dim_dir = -dim_dir;
+
+		downctr = 0;
+		return;
+	}
+
+	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 {
+		PORTD &= ~(1 << D_LED1);
+
+		uart_puts("\t# dim ");
+		uart_puthex(dim_state);
+		uart_puts(" ");
+		uart_puthex(dim_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 < 0x40)
+				dim_state = 0x40;
+		}
+		dali_send(DALI_ADDR | dim_state);
+	}
+}
+
+static void dim_init(void)
+{
+	dim_state = 0;
+	dim_dir = 1;
+}