Project 6  Monochrome Liquid-Crystal Display
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pcd8544.h
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1 
17 #ifndef PCD8544_H_
18 #define PCD8544_H_
19 
20 // No operation
21 #define PCD8544_NOP 0x00
22 
23 // Function set
24 #define PCD8544_FUNCTIONSET 0x20
25 #define PCD8544_ACTIVATE 0x00
26 #define PCD8544_POWERDOWN 0x04
27 #define PCD8544_VERTICAL_ADRESSING 0x02
28 #define PCD8544_HORIZONTAL_ADRESSING 0x00
29 #define PCD8544_BASIC_MODE 0x00
30 #define PCD8544_EXTENDED_MODE 0x01
31 
32 /*
33  * Basic mode instructions
34  */
35 
36 // Display control
37 #define PCD8544_DISPLAYCONTROL 0x08
38 #define PCD8544_DISPLAY_TEST 0x01
39 #define PCD8544_DISPLAY_BLANK 0x00
40 #define PCD8544_DISPLAY_NORMAL 0x04
41 #define PCD8544_DISPLAY_INVERSE 0x5
42 
43 // Set Y address of RAM
44 #define PCD8544_SET_YADDR 0x40
45 #define PCD8544_YADDR(Y) ((Y) & 0x07)
46 
47 // Set X address of RAM
48 #define PCD8544_SET_XADDR 0x80
49 #define PCD8544_XADDR(X) ((X) & 0x7f)
50 
51 /*
52  * Extended mode instructions
53  */
54 
55 // Temperature control
56 #define PCD8544_TEMP_CONTROL 0x04
57 #define PCD8544_TEMP(T) ((T) & 0x03)
58 
59 // Bias system
60 #define PCD8544_SET_BIAS 0x10
61 #define PCD8544_BIAS(B) ((B) & 0x07)
62 
63 // Set VOP
64 #define PCD8544_SET_VOP 0x80
65 #define PCD8544_VOP(V) ((V) & 0x7f)
66 
67 #endif /* PCD8544_H_ */
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