Revision 3:baaa16e24adc, committed 2016-12-19

Comitter:

Anaesthetix

Date:

Mon Dec 19 12:58:10 2016 +0000

Parent:

2:d9e9d326c4bb

Child:

4:8da4c691643a

Commit message:

Added setContrast() function

Changed in this revision

--- a/UC1701.cpp	Sun Dec 18 21:17:42 2016 +0000
+++ b/UC1701.cpp	Mon Dec 19 12:58:10 2016 +0000
@@ -36,22 +36,32 @@
     _lcd->write(0x2E);              // Voltage regulator on
     _lcd->write(0x2F);              // Voltage follower on
     _lcd->write(0xF8);              // Set booster ratio
-    _lcd->write(0x00);              // to 4
+    _lcd->write(0x00);              
     _lcd->write(0x23);              // Set resistor ratio
-    _lcd->write(0x81);              // to 3
-    _lcd->write(0x28);              // Set Electronic volume to 40
-    _lcd->write(0xEE);              // Set cursor update ON -> after write, column cursor will be updated (rows will not!)
+    _lcd->write(0x81);              // Set contrast to
+    _lcd->write(0x28);              // 40
+    _lcd->write(0xEE);              // Set cursor update -> after write, column cursor will be updated (rows will not!)
     _lcd->write(0xAC);              // Disable static indicator
     _lcd->write(0x00);
     _lcd->write(0xA6);              // Disable inverse
     _lcd->write(0xAF);              // Display enable
-    //_lcd->write(0xA5);              // display all points
+    //_lcd->write(0xA5);            // display all points
     _lcd->write(0xA4);              // clear
-    _lcd_cs->write(1);                  // disable SPI
-    _lcd_cd->write(1);                  // DATA mode
+    _lcd_cs->write(1);              // disable SPI
+    _lcd_cd->write(1);              // DATA mode
 
 }
 
+void UC1701::setContrast(char contrast)
+{
+    _lcd_cs->write(0);              // enable SPI
+    _lcd_cd->write(0);              // command mode
+    _lcd->write(0x81);              // command to set contrast
+    _lcd->write(contrast);          // set contrast
+    _lcd_cs->write(1);
+    _lcd_cd->write(1);
+    }
+
 void UC1701::setCursor(char column, char line)
 {
     int i, j;

--- a/UC1701.h	Sun Dec 18 21:17:42 2016 +0000
+++ b/UC1701.h	Mon Dec 19 12:58:10 2016 +0000
@@ -41,6 +41,9 @@
 
     // Initialize LCD
     void init(void);
+    
+    // Set contrast (0 - 63), initialized to 40
+    void setContrast(char contrast);
 
     // Place cursor at position
     void setCursor(char column, char line);
@@ -54,7 +57,7 @@
     // Write text to LCD where font format is a 2-dimensional array (only 96x8, 8x8 pixel fonts supported)
     void writeText2d(char column, char page, const char font_address[96][8], const char *text, int size);
 
-    // Write text to LCD where font format is a 1-dimensional array
+    // Write text to LCD where font format is a 1-dimensional array. Fonts bigger than 8 pix high should work but isn't tested
     void writeText(char column, char page, const char *font_address, const char *str, const uint8_t size);
 
     // Draw a 128x64 pixel bitmap