Diff: CU209SCPB.cpp

Revision:

0:93ae875cbb7a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CU209SCPB.cpp	Sun Dec 10 17:02:32 2017 +0000
@@ -0,0 +1,230 @@
+/* mbed Library for Noritake Itron CU209SCPB-T20 VFD module
+ * 
+ * Copyright (c) 2017, v01: WH, Initial version
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "mbed.h" 
+#include "CU209SCPB.h"
+#include "CU209SCPB_UDC.inc"
+
+
+ /** Constructor for class for driving Noritake Itron CU209SCPB VFD module
+  *
+  *  @brief Supports 1 line of 20 chars (5x7 matrix segments).
+  *         Serial bus interface device. 
+  *  @param  PinName TX Serial bus pin
+  *  @param  Baud baud selects baudrate (default 19200)  
+  *  @param  Int Parity selects paritybits (default Even)  
+  */
+CU209SCPB::CU209SCPB(PinName TXD, Baud baud, SerialBase::Parity parity) : _serial(TXD,NC), _baud(baud), _parity(parity) {
+
+  _init();
+
+  _column   = 0;
+  _columns  = CU209SCPB_NR_COLS; 
+}
+
+/** Init the CU209SCPB interface and the module
+  *
+  * @param  none
+  * @return none
+  */ 
+void CU209SCPB::_init(){
+  
+//init Serial
+  _serial.baud(_baud);
+  _serial.format(8, _parity, 1); // CU209SCPB uses 8 databits, parity, 1 stopbit  
+
+//init module  
+//  _serial.putc(D_ESC);
+//  _serial.putc(int('I'));  // Reset all settings
+//
+//  _serial.putc(D_DC1);     // Automatic CR mode, Cursor to 0 when reaching right end (Default)
+//  _serial.putc(D_DC2);     // Overputc mode, Overputc when reaching right end, Cursor does not move
+//  _serial.putc(D_DC3);     // Scroll mode, Text shifts left when reaching right end, Cursor does not move
+//
+//  _serial.putc(D_CT0);     // International Character Font (Default)
+//  _serial.putc(D_CT1);     // Katakana Character Font
+//
+//  _serial.putc(D_ESC);
+//  _serial.putc(int('T'));  
+//  _serial.putc(20);        // Cursor Blinkspeed = 20 * 14.5ms (Default)
+  _serial.putc(80);        // Cursor Blinkspeed = 80 * 14.5ms
+
+  setBrightness(CU209SCPB_BRT_DEF); // Default Brightness
+
+  // Clear the DCRAM (undefined at Reset)
+  cls(); 
+
+  // Clear the UDC RAM (undefined at Reset)
+  const char udc_none[] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00}; 
+  for (int idx=0; idx < CU209SCPB_NR_UDC; idx++) {
+    setUDC(idx, (char *)udc_none);
+  }     
+}   
+
+
+/** Clear the screen and locate to 0
+  *
+  * @param none
+  * @return none  
+  */ 
+void CU209SCPB::cls() {  
+  _serial.putc(D_CLR); //Clear
+  _serial.putc(D_CR);  //Cursor left
+  
+  _column = 0;   
+}    
+
+
+/** Locate cursor to a screen column
+  *
+  * @param column  The horizontal position from the left, indexed from 0
+  * @return none  
+  */
+void CU209SCPB::locate(int column) {
+  //sanity check
+  if (column < 0) {column = 0;}
+  if (column > (_columns - 1)) {column = _columns - 1;}  
+
+  _serial.putc(D_ESC);
+  _serial.putc(int('H'));  
+  _serial.putc(column);    
+  
+  _column = column;       
+}
+
+
+/** Number of screen columns
+  *
+  * @param none
+  * @return columns
+  */
+int CU209SCPB::columns() {
+    return _columns;
+}
+
+
+/** Set Brightness
+  *
+  * @param  char brightness (valid range 0..FF)  
+  * @return none
+  */
+void CU209SCPB::setBrightness(char brightness){
+  
+//Sanity check
+  brightness = brightness & CU209SCPB_BRT_MSK; // mask invalid bits
+ 
+  _serial.putc(D_ESC);
+  _serial.putc(int('L'));  
+  _serial.putc(brightness);   
+}
+
+/** Set the Cursor mode On/off
+  *
+  * @param bool cursor mode
+  * @return none  
+  */
+void CU209SCPB::setCursor(bool on) {
+     
+  if (on) {
+    _serial.putc(D_DC5); // Blinking Cursor
+  }
+  else {
+    _serial.putc(D_DC4); // Invisible
+  }
+}
+
+/** Set Font
+  *
+  * @param  int font (valid range: 0 == International, other == Katakana)
+  * @return none
+  */
+void CU209SCPB::setFont(int font){
+  
+  if (font == 0) {
+    _serial.putc(D_CT0); // International (Default)
+  }
+  else {
+    _serial.putc(D_CT1); // Katakana
+  }
+}
+
+/** Set User Defined Characters (UDC)
+  *
+  * @param unsigned char udc_idx   The Index of the UDC (0..7)
+  * @param UDCData_t udc_data      The bitpattern for the UDC (7 bytes)
+  * @return none  
+  */
+void CU209SCPB::setUDC(unsigned char udc_idx, UDCData_t udc_data) {
+
+//Sanity check
+  udc_idx = udc_idx & CU209SCPB_UADR_MSK; // mask invalid bits
+
+  _serial.putc(D_ESC);
+  _serial.putc(int('C'));  // UDC command
+  _serial.putc(udc_idx);   
+
+  _serial.putc( ((udc_data[1] & 0x07) << 5) | ((udc_data[0] & 0x1F) << 0) );                               // P8  ......  P1
+  _serial.putc( ((udc_data[3] & 0x01) << 7) | ((udc_data[2] & 0x1F) << 2) | ((udc_data[1] & 0x18) >> 3) ); // P16 ......  P9
+  _serial.putc( ((udc_data[4] & 0x0F) << 4) | ((udc_data[3] & 0x1E) >> 1) );                               // P24 ......  P17  
+  _serial.putc( ((udc_data[6] & 0x03) << 6) | ((udc_data[5] & 0x1F) << 1) | ((udc_data[4] & 0x10) >> 4) ); // P32 ......  P25
+  _serial.putc( ((udc_data[6] & 0x1C) >> 2) );                                                             // ... P35 P34 P33       
+}
+
+/** putc a single character (Stream implementation)
+  * 
+  * @param value char to print
+  * @return value;
+  */
+int CU209SCPB::_putc(int value) {
+    
+    if ((value == '\n') || (value == '\r')) {
+      //No character to display
+      _serial.putc(D_CR); // Cursor to 0, Text remains as is
+      
+      //Update Cursor
+      _column = 0;
+    }
+    else if ( ((value >= 0) && (value < CU209SCPB_NR_UDC)) ||
+              ((value >= CU209SCPB_CHR_STRT) && (value < CU209SCPB_CHR_END)) ){
+
+      //UDCs or Characters to display
+      _serial.putc(value);
+                              
+      //Update Cursor
+      _column++;
+      if (_column > (CU209SCPB_NR_COLS - 1)) {        
+        _column = 0;
+      }
+    }
+
+    return value;
+}
+
+/** Get a single character (Stream implementation)
+  *
+  * @param none  
+  * @return -1
+  */
+int CU209SCPB::_getc() {
+    return -1;
+}