ADuc841 C Demo routine(范例)

//******************************************************************** // // Author : ADI - Apps www.analog.com/MicroConverter // // Date : October 2003 // // File : DACsine.c // // Hardware : ADuC841 // // Description : DAC outputs a sine wave 2.87kHz to DAC0. // Rate calculations assume a crystal value of 11.0592MHz //******************************************************************** #include <stdio.h> #include <ADuC841.h> sbit LED = 0x0B4; void main (void) { unsigned code values[64][2]={{0x07, 0xFF},{0x08, 0xC8},{0x09, 0x8E},{0x0A, 0x51},{0x0B, 0x0F}, {0x0B, 0xC4},{0x0C, 0x71},{0x0D, 0x12},{0x0D, 0xA7},{0x0E, 0x2E}, {0x0E, 0xA5},{0x0F, 0x0D},{0x0F, 0x63},{0x0F, 0xA6},{0x0F, 0xD7}, {0x0F, 0xF5},{0x0F, 0xFF},{0x0F, 0xF5},{0x0F, 0xD7},{0x0F, 0xA6}, {0x0F, 0x63},{0x0F, 0x0D},{0x0E, 0xA5},{0x0E, 0x2E},{0x0D, 0xA7}, {0x0D, 0x12},{0x0C, 0x71},{0x0B, 0xC4},{0x0B, 0x0F},{0x0A, 0x51}, {0x09, 0x8E},{0x08, 0xC8},{0x07, 0xFF},{0x07, 0x36},{0x06, 0x70}, {0x05, 0xAD},{0x04, 0xEF},{0x04, 0x3A},{0x03, 0x8D},{0x02, 0xEC}, {0x02, 0x57},{0x01, 0xD0},{0x01, 0x59},{0x00, 0xF1},{0x00, 0x9B}, {0x00, 0x58},{0x00, 0x27},{0x00, 0x09},{0x00, 0x00},{0x00, 0x09}, {0x00, 0x27},{0x00, 0x58},{0x00, 0x9B},{0x00, 0xF1},{0x01, 0x59}, {0x01, 0xD0},{0x02, 0x57},{0x02, 0xEC},{0x03, 0x8D},{0x04, 0x3A}, {0x04, 0xEF},{0x05, 0xAD},{0x06, 0x70},{0x07, 0x36}}; DACCON = 0x0D; //DAC0 on 12-bit Asynchronous DAC0H = 0x08; //DAC0 mid scale DAC0L = 0x00; while (1) { int i; for ( i = 0 ; i < 64; i++) { DAC0H = values[i][0]; DAC0L = values[i][1]; } LED ^= 1; } }