From c56eb174de6fdc68122108e32a987a8fc9f41fd8 Mon Sep 17 00:00:00 2001
From: wolfgang <wolfgang@hottgenroth.net>
Date: Wed, 23 Jan 2013 09:45:33 +0100
Subject: [PATCH] stepper support

---
 src/main.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 48 insertions(+), 5 deletions(-)

diff --git a/src/main.c b/src/main.c
index 407e4f5..4a9db66 100644
--- a/src/main.c
+++ b/src/main.c
@@ -12,7 +12,11 @@
 #define ZERO_WIDTH_MIN 70
 #define ZERO_WIDTH_MAX 150
 
-#define SUB_DIV_VAL 30
+#define SUB_DIV_LED 30
+#define SUB_DIV_STEPPER 3
+
+#define STEPS_PER_MINUTE 7
+#define STEPS_PER_HOUR 3
 
 
 typedef struct receivedData_s {
@@ -40,6 +44,8 @@ typedef struct clock_s {
   uint8_t weekday;
   uint8_t month;
   uint8_t year;
+  uint8_t minuteStepPosition;
+  uint8_t hourStepPosition;
 } clock_t;
 
 typedef struct opTime_s {
@@ -58,8 +64,11 @@ volatile uint16_t captValue = 0;
 volatile uint16_t gapValue = 0;
 volatile uint8_t valid = 0;
 volatile uint8_t tack = 0;
+volatile uint8_t step = 0;
 
 ISR(TIMER2_OVF_vect) {
+  cli();
+
   clock.second++;
 
   if (valid != 2) {
@@ -76,6 +85,7 @@ ISR(TIMER2_OVF_vect) {
     }
   }
 
+  sei();
 
   opTime.second++;
 
@@ -104,12 +114,18 @@ ISR(INT1_vect) {
 }
 
 ISR(TIMER0_OVF_vect) {
-  static uint16_t subDiv = 0;
-  subDiv++;
-  if (subDiv >= SUB_DIV_VAL) {
-    subDiv = 0;
+  static uint8_t subDivTack = 0;
+  subDivTack++;
+  if (subDivTack >= SUB_DIV_LED) {
+    subDivTack = 0;
     tack = 1;
   }
+
+  static uint8_t subDivStepper = 0;
+  subDivStepper++;
+  if (subDivStepper >= SUB_DIV_STEPPER) {
+    subDivStepper = 0;
+  }
 }
 
 int main() {
@@ -118,6 +134,8 @@ int main() {
   clock.hour = 0;
   clock.minute = 0;
   clock.second = 0;
+  clock.minuteStepPosition = 0;
+  clock.hourStepPosition = 0;
 
   opTime.hour = 0;
   opTime.minute = 0;
@@ -466,6 +484,9 @@ int main() {
             clock.month = rd.monthDigit0 + rd.monthDigit1 * 10;
             clock.year = rd.yearDigit0 + rd.yearDigit1 * 10;
 
+            clock.minuteStepPosition = clock.minute * STEPS_PER_MINUTE;
+            clock.hourStepPosition = clock.hour * STEPS_PER_HOUR;
+
             valid = 2;
             timeValidCnt++;
           }
@@ -502,6 +523,28 @@ int main() {
       printf("POS: %02d\n", positionSwitch);
     }
 
+    static uint8_t currentMinutePosition = 0;
+    static uint8_t currentHourPosition = 0;
+    if (step != 0) {
+      step = 0;
+      if (currentMinutePosition != clock.minuteStepPosition) {
+        printf("Minute: ");
+        if (currentMinutePosition > clock.minuteStepPosition) {
+          printf("steps backward, ");
+        }
+        currentMinutePosition++;
+        printf("desired: %d, current: %d\n", clock.minuteStepPosition, currentMinutePosition);
+      }
+      if (currentHourPosition != clock.hourStepPosition) {
+        printf("Hour: ");
+        if (currentHourPosition > clock.hourStepPosition) {
+          printf("steps backward, ");
+        }
+        currentHourPosition++;
+        printf("desired: %d, current: %d\n", clock.hourStepPosition, currentHourPosition);
+      }
+    }
+
     if (tack != 0) {
       tack = 0;
       switch (valid) {