Wim Huiskamp / PT6964

Princeton PT6964 LED controller supports 4 Digits @ 13 Segments, 5 Digits @ 12 Segments, 6 Digits @ 11 Segments or 7 Digits @ 10 Segments. Also supports a scanned keyboard of upto 20 keys. SPI bus interface.

Dependents:   mbed_PT6964

Princeton PT6964 LED controller supports 4 Digits @ 13 Segments, 5 Digits @ 12 Segments, 6 Digits @ 11 Segments or 7 Digits @ 10 Segments. Also supports a scanned keyboard of upto 20 keys. SPI bus interface.

See Component page here.

Files at this revision

API Documentation at this revision

Revision 2:eaf2f5d1af34, committed 2016-01-14

Comitter:
wim
Date:
Thu Jan 14 20:09:52 2016 +0000
Parent:
1:1adf993a3e34
Commit message:
Refactored display and keyboard defines

Changed in this revision

PT6964.cpp Show annotated file Show diff for this revision Revisions of this file
PT6964.h Show annotated file Show diff for this revision Revisions of this file 
--- a/PT6964.cpp	Sat Jan 09 13:40:06 2016 +0000
+++ b/PT6964.cpp	Thu Jan 14 20:09:52 2016 +0000
@@ -2,6 +2,7 @@
  * Copyright (c) 2015, v01: WH, Initial version
  *               2015, v02: WH, rename Digit/Grid 
  *               2016, v03: WH, updated Icon handling, UDCs and _putc() 
+ *               2016, v04: WH, Refactored display and keyboard defines    
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -166,8 +167,9 @@
   for (int idx=0; idx < PT6964_KEY_MEM; idx++) {
     data = _flip(_spi.write(0xFF));    // read keys and correct bitorder
 
+    data = data & PT6964_KEY_MSK; // Mask valid bits
     if (data != 0) {  // Check for any pressed key
-      for (int bit=0; bit < PT6964_KEY_BITS; bit++) {
+      for (int bit=0; bit < 8; bit++) {
         if (data & (1 << bit)) {keypress++;} // Test all significant bits
       }
     }  
@@ -287,7 +289,7 @@
 
   if (clrAll) {
     //clear local buffer (including Icons)
-    for (int idx=0; idx < (DVD538A_NR_GRIDS << 1); idx++) {
+    for (int idx=0; idx < (DVD538A_NR_GRIDS << 1); idx++) {  // * PT6964_BYTES_PER_GRID
       _displaybuffer[idx] = 0x00;  
     }
   }  
@@ -299,7 +301,7 @@
     }  
   }
 
-  writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
+  writeData(_displaybuffer, (DVD538A_NR_GRIDS * PT6964_BYTES_PER_GRID));
 
   _column = 0;   
 }     
@@ -315,12 +317,12 @@
 
    icn =        icon  & 0xFFFF;
   addr = (icon >> 24) & 0xFF; 
-  addr = (addr - 1) << 1;     
+  addr = (addr - 1) << 1;     // * PT6964_BYTES_PER_GRID
     
   //Save char...and set bits for icon to write
   _displaybuffer[addr]   = _displaybuffer[addr]   | LO(icn);      
   _displaybuffer[addr+1] = _displaybuffer[addr+1] | HI(icn);      
-  writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
+  writeData(_displaybuffer, (DVD538A_NR_GRIDS * PT6964_BYTES_PER_GRID));
 }
 
 /** Clr Icon
@@ -333,12 +335,12 @@
 
   icn =        icon  & 0xFFFF;
   addr = (icon >> 24) & 0xFF; 
-  addr = (addr - 1) << 1;     
+  addr = (addr - 1) << 1;     // * PT6964_BYTES_PER_GRID
 
   //Save char...and clr bits for icon to write
   _displaybuffer[addr]   = _displaybuffer[addr]   & ~LO(icn);      
   _displaybuffer[addr+1] = _displaybuffer[addr+1] & ~HI(icn);      
-  writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
+  writeData(_displaybuffer, (DVD538A_NR_GRIDS * PT6964_BYTES_PER_GRID));
 }
 
 
@@ -407,13 +409,13 @@
       //_column == 1 => Grid4 => addr = 6
       //_column == 2 => Grid3 => addr = 4
       //_column == 3 => Grid4 => addr = 2            
-      addr = (4 - _column) << 1;
+      addr = (4 - _column) << 1;  // * PT6964_BYTES_PER_GRID
 
       //Save icons...and set bits for character to write
       _displaybuffer[addr]   = (_displaybuffer[addr]   & MASK_ICON_GRID[4 - _column][0]) | LO(pattern);
       _displaybuffer[addr+1] = (_displaybuffer[addr+1] & MASK_ICON_GRID[4 - _column][1]) | HI(pattern);
 
-      writeData(_displaybuffer, (DVD538A_NR_GRIDS*2));
+      writeData(_displaybuffer, (DVD538A_NR_GRIDS * PT6964_BYTES_PER_GRID));
                                 
       //Update Cursor
       _column++;

--- a/PT6964.h	Sat Jan 09 13:40:06 2016 +0000
+++ b/PT6964.h	Thu Jan 14 20:09:52 2016 +0000
@@ -2,6 +2,7 @@
  * Copyright (c) 2015, v01: WH, Initial version
  *               2015, v02: WH, rename Digit/Grid 
  *               2016, v03: WH, updated Icon handling, UDCs and _putc()  
+ *               2016, v04: WH, Refactored display and keyboard defines   
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -69,11 +70,15 @@
  * @endcode
  */
 
+//PT6964 Display and Keymatrix data
+#define PT6964_MAX_NR_GRIDS    7
+#define PT6964_BYTES_PER_GRID  2
+//Significant bits Keymatrix data
+#define PT6964_KEY_MSK      0x1B 
+
 //Memory size in bytes for Display and Keymatrix
-#define PT6964_DISPLAY_MEM    14
+#define PT6964_DISPLAY_MEM  (PT6964_MAX_NR_GRIDS * PT6964_BYTES_PER_GRID)
 #define PT6964_KEY_MEM         5
-//Significant bits Keymatrix data
-#define PT6964_KEY_BITS        5 
 
 //Reserved bits for commands
 #define PT6964_CMD_MSK      0xC0
@@ -224,7 +229,6 @@
 
 #define DVD538A_NR_GRIDS  5
 #define DVD538A_NR_DIGITS 4
-//#define DVD538A_DIG1_IDX  1
 #define DVD538A_NR_UDC    8
 
 /** Constructor for class for driving Princeton PT6964 controller as used in DVD538A