From b8d34ebd54d3c247740a5e645ba7a307054cee7d Mon Sep 17 00:00:00 2001
From: Fisch <interfisch@gmx.net>
Date: Wed, 8 Feb 2023 19:37:12 +0100
Subject: [PATCH] add use of annax board shift register reset input

---
 flipcontrol_esp32/include/flipdot.h |  1 +
 flipcontrol_esp32/src/flipdot.cpp   | 17 +++++++++++++++--
 flipcontrol_esp32/src/main.cpp      |  1 +
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/flipcontrol_esp32/include/flipdot.h b/flipcontrol_esp32/include/flipdot.h
index 780ffdb..d62e85d 100644
--- a/flipcontrol_esp32/include/flipdot.h
+++ b/flipcontrol_esp32/include/flipdot.h
@@ -23,6 +23,7 @@ D3 - _clear
 //Pins connected to stuff on annax driver board
 #define PIN_DATA_DRVBRD 33
 #define PIN_CLK_DRVBRD 32
+#define PIN_RESET_DRVBRD 15
 
 //#define PIN_CLEAR 25 //active low
 
diff --git a/flipcontrol_esp32/src/flipdot.cpp b/flipcontrol_esp32/src/flipdot.cpp
index b03915c..8e38c11 100644
--- a/flipcontrol_esp32/src/flipdot.cpp
+++ b/flipcontrol_esp32/src/flipdot.cpp
@@ -12,6 +12,7 @@ void Flipdot::init()
   pinMode(PIN_DATA, OUTPUT);
   pinMode(PIN_CLK, OUTPUT);
   pinMode(PIN_OE, OUTPUT);
+  
   pinMode(PIN_LATCH, OUTPUT);
   pinMode(PIN_CLEAR, OUTPUT);
   pinMode(PIN_DRIVE, OUTPUT);
@@ -19,12 +20,18 @@ void Flipdot::init()
 
   pinMode(PIN_DATA_DRVBRD, OUTPUT);
   pinMode(PIN_CLK_DRVBRD, OUTPUT);
+  pinMode(PIN_RESET_DRVBRD, OUTPUT);
   
   
   digitalWrite(PIN_OE, HIGH); //Active Low
+  
   digitalWrite(PIN_LATCH, LOW);
   
   digitalWrite(PIN_DRIVE, LOW);
+
+  digitalWrite(PIN_RESET_DRVBRD,HIGH); //high = reset. set low to enable data flow to driverboard shift registers
+
+  
 }
 
 
@@ -83,6 +90,8 @@ bool Flipdot::clearSelectedColumn() {
     delayMicroseconds(MICROS_DRIVEDOTCLEAR);
     digitalWrite(PIN_CLEAR, LOW);
     digitalWrite(PIN_DRIVE, LOW);
+
+    digitalWrite(PIN_RESET_DRVBRD,HIGH); //reset driverboard shift registers
     return 1;
 }
 
@@ -108,6 +117,8 @@ bool Flipdot::setSelectedDot() {
     delayMicroseconds(MICROS_DRIVEDOTSET); //Drive Dot
     digitalWrite(PIN_OE, HIGH); //Active Low
     digitalWrite(PIN_DRIVE, LOW);
+
+    digitalWrite(PIN_RESET_DRVBRD,HIGH); //reset driverboard shift registers
     return 1;
 }
 
@@ -125,8 +136,8 @@ bool Flipdot::HBridgeOK() {
     return 1;
 }
 
-void Flipdot::shiftData() { //send out all data to shift registers
-    
+
+void Flipdot::shiftData() {  //send out all data to shift registers
     
     //select Rows via shift registers on own controller board
     shiftOutSlow(PIN_DATA, PIN_CLK, LSBFIRST, row&0xff);  //lower byte
@@ -135,6 +146,8 @@ void Flipdot::shiftData() { //send out all data to shift registers
     delayMicroseconds(MICROS_SHIFT_LATCH);
     digitalWrite(PIN_LATCH, LOW);
 
+    digitalWrite(PIN_RESET_DRVBRD,LOW); //get driverboard shift registers out of reset
+
     //Select Columns via Shift registers
     for (uint8_t i=0;i<COLUMNBYTES;i++) { //adsf: previously i<7
         shiftOutSlow(PIN_DATA_DRVBRD, PIN_CLK_DRVBRD, LSBFIRST, col[COLUMNBYTES-1-i]); //asdf previously col·[6-i]
diff --git a/flipcontrol_esp32/src/main.cpp b/flipcontrol_esp32/src/main.cpp
index 91df1dd..60dc212 100644
--- a/flipcontrol_esp32/src/main.cpp
+++ b/flipcontrol_esp32/src/main.cpp
@@ -160,6 +160,7 @@ void loop_drawClearTest() {
 
         flipdot.setSelectedDot();
 
+
         unsigned long shiftduration=micros()-starttime;
         Serial.println("");
         Serial.print("Duration="); Serial.println(shiftduration);