dsp2812的12864液晶显示源码

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源程序如下:

1. //###########################################################################
   
2. //
   
3. // FILE:    Example_2833xI2c_eeprom.c
   
4. //
   
5. // TITLE:   DSP2833x I2C EEPROM Example
   
6. //
   
7. // ASSUMPTIONS:
   
8. //
   
9. //    This program requires the DSP2833x header files.
   
10. //
    
11. //    This program requires an external I2C EEPROM connected to
    
12. //    the I2C bus at address 0x50.
    
13. //
    
14. //    As supplied, this project is configured for "boot to SARAM"
    
15. //    operation.  The 2833x Boot Mode table is shown below.
    
16. //    For information on configuring the boot mode of an eZdsp,
    
17. //    please refer to the documentation included with the eZdsp,
    
18. //
    
19. //       $Boot_Table:
    
20. //
    
21. //         GPIO87   GPIO86     GPIO85   GPIO84
    
22. //          XA15     XA14       XA13     XA12
    
23. //           PU       PU         PU       PU
    
24. //        ==========================================
    
25. //            1        1          1        1    Jump to Flash
    
26. //            1        1          1        0    SCI-A boot
    
27. //            1        1          0        1    SPI-A boot
    
28. //            1        1          0        0    I2C-A boot
    
29. //            1        0          1        1    eCAN-A boot
    
30. //            1        0          1        0    McBSP-A boot
    
31. //            1        0          0        1    Jump to XINTF x16
    
32. //            1        0          0        0    Jump to XINTF x32
    
33. //            0        1          1        1    Jump to OTP
    
34. //            0        1          1        0    Parallel GPIO I/O boot
    
35. //            0        1          0        1    Parallel XINTF boot
    
36. //            0        1          0        0    Jump to SARAM            <- "boot to SARAM"
    
37. //            0        0          1        1    Branch to check boot mode
    
38. //            0        0          1        0    Boot to flash, bypass ADC cal
    
39. //            0        0          0        1    Boot to SARAM, bypass ADC cal
    
40. //            0        0          0        0    Boot to SCI-A, bypass ADC cal
    
41. //                                              Boot_Table_End$
    
42. //
    
43. // DESCRIPTION:
    
44. //
    
45. //    This program will write 1-14 words to EEPROM and read them back.
    
46. //    The data written and the EEPROM address written to are contained
    
47. //    in the message structure, I2cMsgOut1. The data read back will be
    
48. //    contained in the message structure I2cMsgIn1.
    
49. //
    
50. //    This program will work with the on-board I2C EEPROM supplied on
    
51. //    the F2833x eZdsp.
    
52. //
    
53. //
    
54. //###########################################################################
    
55. // Original Author: D.F.
    
56. //
    
57. // $TI Release: 2833x/2823x Header Files and Peripheral Examples V133 $
    
58. // $Release Date: June 8, 2012 $
    
59. //###########################################################################
    
60. 
    
61. 
    
62. #include "DSP281x_Device.h"
    
63. #include "DSP281x_Examples.h"
    
64. 
    
65. // Note: I2C Macros used in this example can be found in the
    
66. // DSP2833x_I2C_defines.h file
    
67. 
    
68. // Prototype statements for functions found within this file.
    
69. 
    
70. extern void Lcd_12864_Test(void);
    
71. extern void Init_Port(void);
    
72. void main(void)
    
73. {
    
74. 
    
75. 
    
76. // Step 1. Initialize System Control:
    
77. // PLL, WatchDog, enable Peripheral Clocks
    
78. // This example function is found in the DSP2833x_SysCtrl.c file.
    
79.    InitSysCtrl();
    
80. 
    
81. 
    
82. // Step 2. Initalize GPIO:
    
83. // This example function is found in the DSP2833x_Gpio.c file and
    
84. // illustrates how to set the GPIO to it's default state.
    
85. // InitGpio();
    
86. // Setup only the GP I/O only for I2C functionality
    
87. 
    
88. // Step 3. Clear all interrupts and initialize PIE vector table:
    
89. // Disable CPU interrupts
    
90.    DINT;
    
91. 
    
92. // Initialize PIE control registers to their default state.
    
93. // The default state is all PIE interrupts disabled and flags
    
94. // are cleared.
    
95. // This function is found in the DSP2833x_PieCtrl.c file.
    
96.    InitPieCtrl();
    
97. 
    
98. // Disable CPU interrupts and clear all CPU interrupt flags:
    
99.    IER = 0x0000;
    
100.    IFR = 0x0000;
     
101. 
     
102. // Initialize the PIE vector table with pointers to the shell Interrupt
     
103. // Service Routines (ISR).
     
104. // This will populate the entire table, even if the interrupt
     
105. // is not used in this example.  This is useful for debug purposes.
     
106. // The shell ISR routines are found in DSP2833x_DefaultIsr.c.
     
107. // This function is found in DSP2833x_PieVect.c.
     
108.    InitPieVectTable();
     
109. 
     
110. // Interrupts that are used in this example are re-mapped to
     
111. // ISR functions found within this file.
     
112. 
     
113.    Init_Port();
     
114. // Step 4. Initialize all the Device Peripherals:
     
115. // This function is found in DSP2833x_InitPeripherals.c
     
116. // InitPeripherals(); // Not required for this example
     
117. 
     
118. // Step 5. User specific code
     
119. 
     
120. 
     
121. 
     
122. // Enable interrupts required for this example
     
123. 
     
124. 
     
125. // Enable CPU INT8 which is connected to PIE group 8
     
126. 
     
127.    EINT;   // Enable Global interrupt INTM
     
128. 
     
129.    for(;;)
     
130.    {
     
131.                 Lcd_12864_Test();
     
132.    }   // end of for(;;)
     
133. //#endif
     
134. }   // end of main
     
135. 
     
136. 
     
137. 
     
138. 
     
139. 
     
140. 
     
141. //===========================================================================
     
142. // No more.
     
143. //===========================================================================

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