From 7f7df544e2b1887054180d7bb5d9ae50cbeebce4 Mon Sep 17 00:00:00 2001
From: hg <devnull@localhost>
Date: Tue, 3 Mar 2015 21:49:53 +0100
Subject: [PATCH] display on a very good way

---
 src/display.cpp | 46 +++++++++++++++++++++++-----------------------
 src/main.cpp    |  5 +++--
 2 files changed, 26 insertions(+), 25 deletions(-)

diff --git a/src/display.cpp b/src/display.cpp
index ac5a2e4..4b73a15 100644
--- a/src/display.cpp
+++ b/src/display.cpp
@@ -17,7 +17,7 @@ void dispInit() {
 	spiXfer16(0x09ff); // decode mode
 	spiXfer16(0x0a01); // intensity
 
-	spiXfer16(0x0b03); // scan limit
+	spiXfer16(0x0b07); // scan limit
 
 	spiXfer16(0x0c01); // normal op
 
@@ -46,7 +46,7 @@ void dispSetError() {
 	spiXfer16(0x040b);
 }
 
-#define MAX_DIGIT 4
+#define MAX_DIGIT 8
 
 void dispSetDigit(uint8_t digit, uint8_t value) {
 	if ((digit > MAX_DIGIT) || (digit == 0) || (value > 9)) {
@@ -119,40 +119,40 @@ void dispSet(uint8_t unit, int16_t value) {
 			uint8_t neg = (value < 0) ? 1 : 0;
 			// value = abs(value);
 
-			uint8_t digit0 = value / 1000;
-			uint16_t remVal = value - (digit0 * 1000);
-			uint8_t digit1 = remVal / 100;
-			remVal = remVal - (digit1 * 100);
-			uint8_t digit2 = remVal / 10;
-			remVal = remVal - (digit2 * 10);
-			uint8_t digit3 = remVal;
+			uint8_t digit3 = value / 1000;
+			uint16_t remVal = value - (digit3 * 1000);
+			uint8_t digit2 = remVal / 100;
+			remVal = remVal - (digit2 * 100);
+			uint8_t digit1 = remVal / 10;
+			remVal = remVal - (digit1 * 10);
+			uint8_t digit0 = remVal;
 
-			if (digit0 == 0) {
+			if (digit3 == 0) {
 				if (neg) {
-					digit0 = 0x0a;
+					digit3 = 0x0a;
 				} else {
-					digit0 = 0x0f;
+					digit3 = 0x0f;
 				}
 			}
 
-			if (digit0 > 0x09 && digit1 == 0) {
-				if (neg) {
-					digit1 = 0x0a;
-					digit0 = 0x0f;
-				} else {
-					digit1 = 0x0f;
-				}
-			}
-
-			if (digit0 > 0x09 && digit1 > 0x09 && digit2 == 0) {
+			if (digit3 > 0x09 && digit2 == 0) {
 				if (neg) {
 					digit2 = 0x0a;
-					digit1 = 0x0f;
+					digit3 = 0x0f;
 				} else {
 					digit2 = 0x0f;
 				}
 			}
 
+			if (digit3 > 0x09 && digit2 > 0x09 && digit1 == 0) {
+				if (neg) {
+					digit1 = 0x0a;
+					digit2 = 0x0f;
+				} else {
+					digit1 = 0x0f;
+				}
+			}
+
 			if (unit == 0) {
 				spiXfer16(0x0100 | digit0);
 				spiXfer16(0x0200 | digit1);
diff --git a/src/main.cpp b/src/main.cpp
index a982ca4..f63d130 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -35,7 +35,8 @@ int main() {
 	spiInit();
 	dispInit();
 
-
+	dispSet(0, 12);
+	dispSet(1, 437);
 
 	__enable_interrupt();
 
@@ -47,7 +48,7 @@ int main() {
 		if (c > 1000000) {
 			c = 0;
 			d++;
-			dispSet(0, d);
+			// dispSetDigit(0, 1);
 		}
 	}
 }