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| /programy/C/avr/tests/ATmega128/blik.c |
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| 0,0 → 1,48 |
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| /********************************************* |
| * vim: set sw=8 ts=8 si : |
| * Author: Guido Socher, Copyright: GPL |
| * This program is to test the led connected to |
| * PC5. |
| * See http://linuxfocus.org/English/November2004/ |
| * for details. |
| * Chip type : ATMEGA644 |
| * Clock frequency : Internal clock 1 Mhz (factory default) |
| *********************************************/ |
| #include <avr/io.h> |
| #include <inttypes.h> |
| #define F_CPU 8000000UL // 8 MHz |
| #include <util/delay.h> |
| |
| + |
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| +void cekej(int ms) |
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| +{ |
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| + |
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| + // we use a calibrated macro. This is more |
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| + // accurate and not so much compiler dependent |
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| + // as self made code. |
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| + while (ms) |
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| + { |
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| + _delay_ms(0.96); |
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| + ms--; |
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| + } |
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| +} |
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| + |
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| +int main(void) |
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| +{ |
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| + /* INITIALIZE */ |
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| + /* enable PC5 as output */ |
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| + DDRC|= (1<<LED); |
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| + |
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| + /* PC5 is 5 (see file include/avr/iom8.h) and 1<<PC5 is 00100000 |
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| + * This can also be written as _BV(PC5)*/ |
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| + while (1) { |
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| + /* led on, pin=0 */ |
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| + PORTC|= (1<<LED); |
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| + cekej(100); |
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| + /* set output to 5V, LED off */ |
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| + PORTC &= ~(1<<LED); |
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| + cekej(1000); |
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| + } |
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| + return(0); |
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| +} |
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