|
|
/******************************************************************************/
/* This file is part of the uVision/ARM development tools */
/* Copyright KEIL ELEKTRONIK GmbH 2002-2004 */
/******************************************************************************/
/* */
/* BLINKY.C: LED Flasher */
/* */
/******************************************************************************/
#include/* 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 */while (1) { /* Loop forever */
for (n = 0x00010000; n <= 0x00800000; n <<= 1) {
/* Blink LED 0, 1, 2, 3, 4, 5, 6, 7 */
IOSET1 = n; /* Turn on LED */
delay(); /* Delay */
IOCLR1 = 0x00FF0000; /* Turn off LEDs */
}
}
}
|
|
E-mail: 
info@telesys.ru
