adc.rar_AD DA_ad采集_lpc2114_uVison

/******************************************************************************/ /* This file is part of the uVision/ARM development tools */ /* Copyright KEIL ELEKTRONIK GmbH 2002-2004 */ /******************************************************************************/ /* */ /* BLINKY.C: LED Flasher */ /* */ /******************************************************************************/ #include <LPC21xx.H> /* LPC21xx definitions */ extern void init_serial (void); /* Initialize Serial Interface */ extern int putchar (int ch); /* Write character to Serial Port */ extern int getchar (void); /* Read character from Serial Port */ void puthex (int hex) { /* Write Hex Digit to Serial Port */ if (hex > 9) putchar('A' + (hex - 10)); else putchar('0' + hex); } void putstr (char *p) { /* Write string */ while (*p) { putchar (*p++); } } void delay (void) { /* Delay function */ unsigned int cnt; unsigned int val; ADCR |= 0x01000000; /* Start A/D Conversion */ do { val = ADDR; /* Read A/D Data Register */ } while ((val & 0x80000000) == 0); /* Wait for end of A/D Conversion */ ADCR &= ~0x01000000; /* Stop A/D Conversion */ val = (val >> 6) & 0x03FF; /* Extract AIN0 Value */ putstr ("\nAIN0 Result = 0x"); /* Output A/D Conversion Result */ puthex((val >> 8) & 0x0F); /* Write 1. Hex Digit */ puthex((val >> 4) & 0x0F); /* Write 2. Hex Digit */ puthex (val & 0x0F); /* Write 3. Hex Digit */ val = (val >> 2) << 12; /* Adjust Delay Value */ for (cnt = 0; cnt < val; cnt++); /* Delay */ } int main (void) { unsigned int n; IODIR1 = 0x00FF0000; /* P1.16..23 defined as Outputs */ ADCR = 0x002E0401; /* Setup A/D: 10-bit AIN0 @ 3MHz */ init_serial(); /* Initialize Serial Interface */ IOSET1=0x00ff0000; while (1) { /* Loop forever */ for (n = 0x00010000; n <= 0x00800000; n <<= 1) { /* Blink LED 0, 1, 2, 3, 4, 5, 6, 7 */ IOCLR1 = n; /* Turn on LED */ delay(); /* Delay */ IOSET1 = 0x00FF0000; /* Turn off LEDs */ } } }