- /* Created: 周一 10月 26 2026
- * Processor: PIC16F690
- * Compiler: HI-TECH C for PIC10/12/16
- */
- //受单片机主频限制，生成的波形频率较低，没有什么实用价值，只作为仿真编程参考。
- #include <htc.h>
- #include "I2C.H"
- #include "MCP4725.H"
- unsigned int const Data[200] =
- {
- 2047,2111,2176,2240,2304,2367,2431,2494,2556,2618,\
- 2680,2741,2801,2860,2919,2977,3033,3089,3144,3198,\
- 3250,3302,3352,3401,3449,3495,3540,3583,3625,3665,\
- 3703,3740,3776,3809,3841,3871,3900,3926,3951,3973,\
- 3994,4013,4030,4045,4058,4069,4078,4085,4090,4093,\
- 4095,4093,4090,4085,4078,4069,4058,4045,4030,4013,\
- 3994,3973,3951,3926,3900,3871,3841,3809,3776,3740,\
- 3703,3665,3625,3583,3540,3495,3449,3401,3352,3302,\
- 3250,3198,3144,3089,3033,2977,2919,2860,2801,2741,\
- 2680,2618,2556,2494,2431,2367,2304,2240,2176,2111,\
- 2047,1983,1918,1854,1790,1727,1663,1600,1538,1476,\
- 1414,1353,1293,1234,1175,1117,1061,1005,950,896,\
- 844,792,742,693,645,599,554,511,469,429,\
- 391,354,318,285,253,223,194,168,143,121,\
- 100,81,64,49,36,25,16,9,4,1,\
- 0,1,4,9,16,25,36,49,64,81,\
- 100,121,143,168,194,223,253,285,318,354,\
- 391,429,469,511,554,599,645,693,742,792,\
- 844,896,950,1005,1061,1117,1175,1234,1293,1353,\
- 1414,1476,1538,1600,1663,1727,1790,1854,1918,1983
- };
- void GenerateSineWave(void)
- {
- unsigned char i;
- unsigned char addr = MCP4725_BASE_ADDR;
- for(i = 0;i < 200; i++)
- {
- mcp4725_fast_write(Data[i]);
- }
- }
- void DeviceInitial()
- {
- OSCCON = 0X71;
- CM1CON0 = 0x00; // 关闭比较器
- CM2CON0 = 0x00;
- }
- void main(void)
- {
- DeviceInitial();
- while (1)
- {
- GenerateSineWave( );
- CLRWDT();
- }
- }
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