2#define_LCD_H_

3/*****************************************

4RS - PORTD_0

5R/W - PORTD_1

6E - PORTD_2

7DB - PORTA

8******************************************/

9voidLCD_Set_RS(void);

10voidLCD_Clear_RS(void);

11voidLCD_Set_RW(void);

12voidLCD_Clear_RW(void);

13voidLCD_Set_E(void);

14voidLCD_Clear_E(void);

15voidLCD_CheckBF(void);

16//Write Command

17voidLCD_Write_Cmd(unsignedcharbyCmd);

18//Write Data

19voidLCD_Write_Data(unsignedcharbyData);

20voidLCD_Delay_5ms(void);

21voidLCD_Delay_500ms(void);

22voidLCD_PortInit(void);

23

24//Application Interface

25voidLCD_Init(void);

26voidLCD_Display(char*pstrText);

27

28#endif

29

2#include<iom16v.h>

3#include<macros.h>

4

5/*****************************************

6RS - PORTD_0

7R/W - PORTD_1

8E - PORTD_2

9DB - PORTA

10******************************************/

11

12

13voidLCD_Set_RS(void)

14{

15PORTD|=(1<<0);

16

17return;

18}

19

20voidLCD_Clear_RS(void)

21{

22PORTD&=~(1<<0);

23

24return;

25}

26

27voidLCD_Set_RW(void)

28{

29PORTD|=(1<<1);

30

31return;

32}

33

34voidLCD_Clear_RW(void)

35{

36PORTD&=~(1<<1);

37

38return;

39}

40

41voidLCD_Set_E(void)

42{

43PORTD|=(1<<2);

44

45return;

46}

47

48voidLCD_Clear_E(void)

49{

50PORTD&=~(1<<2);

51

52return;

53}

54

55voidLCD_CheckBF(void)

56{

57DDRA=0x00;//Input

58

59LCD_Clear_RS();

60LCD_Set_RW();

61LCD_Set_E();

62while(PINA&0x80)

63{

64;

65}

66LCD_Clear_E();

67

68DDRA=0xFF;//Output

69

70return;

71}

72

73//Write Command

74voidLCD_Write_Cmd(unsignedcharbyCmd)

75{

76LCD_CheckBF();

77

78LCD_Clear_RS();

79LCD_Clear_RW();

80LCD_Set_E();

81PORTA=byCmd;

82LCD_Clear_E();

83

84return;

85}

86

87//Write Data

88voidLCD_Write_Data(unsignedcharbyData)

89{

90LCD_CheckBF();

91

92LCD_Set_RS();

93LCD_Clear_RW();

94LCD_Set_E();

95PORTA=byData;

96LCD_Clear_E();

97

98return;

99}

100

101voidLCD_Delay_5ms(void)

102{

103unsignedinti=5552;

104while(i--)

105{

106;

107}

108

109return;

110}

111

112voidLCD_Delay_500ms(void)

113{

114unsignedchari=5;

115unsignedcharj=0;

116

117while(i--)

118{

119j=7269;

120while(j--)

121{

122;

123}

124}

125

126return;

127}

128

129//Port Init

130voidLCD_PortInit(void)

131{

132PORTD=0x00;

133DDRD=0xFF;//Output

134DDRA=0xFF;

135

136return;

137}

138

139//LCD Init

140voidLCD_Init(void)

141{

142LCD_PortInit();

143

144LCD_Delay_500ms();

145

146LCD_Write_Cmd(0x38);//Function Set. 8bit data length, 2-line, 5*8 font

147LCD_Delay_5ms();

148LCD_Write_Cmd(0x0C);//Display ON/OFF Control. Display ON, Cursor OFF, Blink OFF

149LCD_Delay_5ms();

150LCD_Write_Cmd(0x01);//Display Clear.

151LCD_Delay_5ms();

152LCD_Write_Cmd(0x06);//Entry Mode Set. Increment mode, Entire shift off

153

154return;

155}

156

157voidLCD_Display(char*pstrText)

158{

159unsignedchari=0;

160

161LCD_Write_Cmd(0x80|0x00);//1 Line Position

162while(*pstrText!=0x00)

163{

164if(i==8)

165{

166LCD_Write_Cmd(0x80|0x40);//2 Line Position

167}

168

169LCD_Write_Data(*(pstrText++));

170i++;

171}

172

173return;

174}

175

176