康一 芳賀 / TextLCD

TextLCD library for controlling various LCD panels based on the HD44780 4-bit interface

Files at this revision

API Documentation at this revision

Revision 9:613720545be0, committed 22 months ago

Comitter:
dokken
Date:
Mon Dec 19 23:44:46 2022 +0000
Parent:
8:308d188a2d3a
Commit message:
test

Changed in this revision

TextLCD.cpp Show annotated file Show diff for this revision Revisions of this file
TextLCD.h Show annotated file Show diff for this revision Revisions of this file 
--- a/TextLCD.cpp	Thu Jan 02 21:07:01 2014 +0000
+++ b/TextLCD.cpp	Mon Dec 19 23:44:46 2022 +0000
@@ -47,6 +47,28 @@
     cls();
 }
 
+
+void TextLCD::init(void)
+{
+    _e  = 1;
+    _rs = 0;            // command mode
+
+    wait(0.015);        // Wait 15ms to ensure powered up
+
+    // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
+    for (int i=0; i<3; i++) {
+        writeByte(0x3);
+        wait(0.00164);  // this command takes 1.64ms, so wait for it
+    }
+    writeByte(0x2);     // 4-bit mode
+    wait(0.000040f);    // most instructions take 40us
+
+    writeCommand(0x28); // Function set 001 BW N F - -
+    writeCommand(0x0C);
+    writeCommand(0x6);  // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes
+}
+
+
 void TextLCD::character(int column, int row, int c) {
     int a = address(column, row);
     writeCommand(a);

--- a/TextLCD.h	Thu Jan 02 21:07:01 2014 +0000
+++ b/TextLCD.h	Mon Dec 19 23:44:46 2022 +0000
@@ -87,6 +87,8 @@
 
     int rows();
     int columns();
+    
+    void init();    //  オリジナル初期化メソッド
 
 protected: