Diff: AQM1602.cpp

Revision:

7:5375acc9a74a

Parent:

4:c943f05b7843

Child:

8:854c244a7863

--- a/AQM1602.cpp	Mon Sep 07 09:14:06 2015 +0000
+++ b/AQM1602.cpp	Sun Nov 15 06:32:29 2015 +0000
@@ -1,7 +1,8 @@
 //-------------------------------------------------------
 //  Class for LCD, AQM1602XA-RN-GBW
+//      Do not use mbed Rev.109, using Nucleo-F401/441
 //
-//  2015/07/06, Copyright (c) 2015 MIKAMI, Naoki
+//  2015/11/15, Copyright (c) 2015 MIKAMI, Naoki
 //-------------------------------------------------------
 
 #include "AQM1602.hpp"
@@ -15,31 +16,30 @@
     {
         if (clock != 100000) i2c_.frequency(clock);
 
-        wait_ms(40);
-        connected_ = Clear();   // Clear display
-        WriteCmd(0x39);         // To extended command
+        wait_ms(50);
+        connected_ = WriteCmd(0x38);
         if (!connected_)
         {
             fprintf(stderr, "\r\nLCD AQM1602 not connected\r\n");
             return;
         }
-
-        WriteCmd(0x14); // Internal OSC frequency
-        WriteCmd(0x70 | 0x00); // Contrast set
-        WriteCmd(0x54 | 0x02); // Power/ICON/Contrast control
-        WriteCmd(0x6C); // Follower control
+        WriteCmd(0x39);         // To extended command
+        WriteCmd(0x14);         // Internal OSC frequency
+        WriteCmd(0x70 | 0x00);  // Contrast set
+        WriteCmd(0x54 | 0x02);  // Power/ICON/Contrast control
+        WriteCmd(0x6C);         // Follower control
         wait_ms(200);
 
+        WriteCmd(0x01);
         WriteCmd(0x38); // data length：8-bit, 2-line, 5×8 dots
         WriteCmd(0x0C | (cursor << 1) | blink);
     }
 
     // All clear
-    bool Aqm1602::Clear()
+    void Aqm1602::Clear()
     {
-        bool ok = WriteCmd(0x01);
-        wait_ms(50);
-        return ok;
+        WriteCmd(0x01);
+        wait_ms(2);
     }
 
     // Write string
@@ -83,6 +83,7 @@
     {
         char tx[2] = { cmdData, data };
         int rt = i2c_.write(LCD_ADDRESS_, tx, 2);
+        wait_us(30);
         return (rt == 0) ? true : false;
     }
 }