Kenji Arai / TextLCD

In TextLCD_I2C_N Class, added void setContrast(unsigned char c) function as temporary. This is for ST7032i non-volume type contrast control.

Dependents:   LPC1114_data_logger RTC_w_COM Frequency_Counter_w_GPS_1PPS CW_Decoder_using_FFT_on_F446 ... more

Fork of TextLCD by Wim Huiskamp

In TextLCD_I2C_N Class, added void setContrast(unsigned char c) function as temporary.

Diff: TextLCD.cpp

Revision:
29:986538f94abe
Parent:
28:30fa94f7341c
Child:
30:4c57a022a56c
--- a/TextLCD.cpp	Sat Jun 14 17:04:25 2014 +0000
+++ b/TextLCD.cpp	Sun Jun 15 03:22:32 2014 +0000
@@ -9,7 +9,8 @@
  *               2013, v07: WH, Added support for backlight and include portdefinitions for LCD2004 Module from DFROBOT 
  *               2014, v08: WH, Refactored in Base and Derived Classes to deal with mbed lib change regarding 'NC' defined pins 
  *               2014, v09: WH/EO, Added Class for Native SPI controllers such as ST7032 
- *               2014, v10: WH, Added Class for Native I2C controllers such as ST7032i, Added support for MCP23008 I2C portexpander, Added support for Adafruit module  
+ *               2014, v10: WH, Added Class for Native I2C controllers such as ST7032i, Added support for MCP23008 I2C portexpander, Added support for Adafruit module
+ *               2014, v11: SW, added setContrast function for ST7032i only by JH1PJL 
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -115,7 +116,7 @@
 
           _writeCommand(0x1C);    //Internal OSC frequency adjustment Framefreq=183HZ, bias will be 1/4 
 
-          _writeCommand(0x73);    //Contrast control low byte
+          _writeCommand(0x70);    //Contrast control low byte
 
           _writeCommand(0x57);    //booster circuit is turned on. /ICON display off. /Contrast control high byte
           wait_ms(10);            // Wait 10ms to ensure powered up
@@ -808,6 +809,19 @@
   
 }
 
+// JH1PJL from here ->
+void TextLCD_Base::setContrast(unsigned char c) {
+
+    if (_ctrl == ST7032_3V3){  
+        _writeCommand(0x39);
+        _writeCommand(0x70 | (c & 0x0f)); // contrast Low
+        _writeCommand(0x5C | ((c >> 4) & 0x03)); // contast High/icon/power
+        _writeCommand(0x38);
+    }
+    
+}
+// JH1PJL <- to here
+
 //--------- End TextLCD_Base -----------