From 02658f2c45bf045e7d424f64eaab48e142aada82 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?King=20K=C3=A9vin?= <kingkevin@cuvoodoo.info>
Date: Tue, 23 Feb 2016 20:28:55 +0100
Subject: [PATCH] show hour time with gradient

---
 main.c | 62 +++++++++++++++++++++++-----------------------------------
 1 file changed, 24 insertions(+), 38 deletions(-)

diff --git a/main.c b/main.c
index 4c71a4c..ef213e5 100644
--- a/main.c
+++ b/main.c
@@ -118,19 +118,21 @@ static void clock_hours(void)
 static void clock_hour(uint32_t time)
 {
 	time %= ticks_midday; // the LED strip can only display 12 hours
-	uint32_t led_hour = WS2812B_LEDS*time/ticks_midday; // scale to number of LEDs
-	if (led_hour<WS2812B_LEDS) {
-		clock_leds[led_hour*3+0] = 0;
-		clock_leds[led_hour*3+1] = 0;
-		clock_leds[led_hour*3+2] = 0xff;
+	uint32_t led_hour = (WS2812B_LEDS*(255*(uint64_t)(time)))/ticks_midday; // scale to LED brightnesses
+	printf("led hour: %lu, brightness: %lu\n", led_hour/255, led_hour%255);
+	if (led_hour>=WS2812B_LEDS*255) { // a calculation error occurred
+		return;
 	}
-	/*
-	for (uint16_t led=0; led<hour; led++) {
+	for (uint16_t led=0; led<WS2812B_LEDS && led_hour>0; led++) {
 		clock_leds[led*3+0] = 0;
 		clock_leds[led*3+1] = 0;
-		clock_leds[led*3+2] = 0xff;
+		if (led_hour>=0xff) { // full hours
+			clock_leds[led*3+2] = 0xff;
+		} else { // running hours
+			clock_leds[led*3+2] = led_hour;
+		}
+		led_hour -= clock_leds[led*3+2];
 	}
-	*/
 }
 
 /* set the LEDs */
@@ -168,14 +170,15 @@ int main(void)
 #endif
 
 	ws2812b_setup(); // setup WS2812b LEDs
-	clock_clear(); // clear clock LEDs
+	clock_hours(); // show hour markers
+	leds_set(); // set the colors of all LEDs
+	ws2812b_transmit(); // transmit set color
 
 	printf("welcome to the CuVoodoo LED clock\n"); // print welcome message
 	led_on(); // switch on LED to indicate setup completed
 
-	clock_hour(6*ticks_hour);
-	leds_set(); // set the colors of all LEDs
-	ws2812b_transmit(); // transmit set color
+	uint32_t time = 0; // the time to display
+	bool clear = true; // clear or display time
 	
 	bool action = false; // if an action has been performed don't go to sleep
 	button_flag = false; // reset button flag
@@ -199,34 +202,17 @@ int main(void)
 			char_flag = false; // reset flag
 			action = true; // action has been performed
 			printf("%c",c); // echo receive character
-			switch (c) {
-				case 'r': // set red color
-					clock_leds[0] = 0xff;
-					clock_leds[1] = 0;
-					clock_leds[2] = 0;
-					break;
-				case 'g': // set green color
-					clock_leds[0] = 0;
-					clock_leds[1] = 0xff;
-					clock_leds[2] = 0;
-					break;
-				case 'b': // set blue color
-					clock_leds[0] = 0;
-					clock_leds[1] = 0;
-					clock_leds[2] = 0xff;
-					break;
-				case 'm': // show hour marks
-					clock_hours();
-					break;
-				case 'h': // show hours
-					clock_hour(6*ticks_hour);
-					break;	
-				default: // set no color
-					clock_clear();
-					break;
+
+			if (clear) {
+				clock_clear(); // clear clock LEDs
+			} else {
+				printf("%02lu:%02lu\n", time/ticks_hour, (time%ticks_hour)/ticks_minute);
+				clock_hour(time); // set time
+				time += ticks_minute; // increment time
 			}
 			leds_set(); // set the colors of all LEDs
 			ws2812b_transmit(); // transmit set color
+			clear = false;
 		}
 		while (button_flag) {
 			button_flag = false; // reset flag