42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
#include <avr/io.h>
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#include <util/delay.h>
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// #define FIRST_LETTER_IMPL(x) #x[0]
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// #define FIRST_LETTER(x) FIRST_LETTER_IMPL(x)
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// #define PORT_LETTER(PIN) FIRST_LETTER(PIN)
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#define SET(REGISTER, BIT) REGISTER |= 1 << BIT
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#define CLEAR(REGISTER, BIT) REGISTER &= ~(1 << BIT)
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#define TEST(REGISTER, BIT) REGISTER & 1 << BIT
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#define TOGGLE(REGISTER, BIT) REGISTER ^= 1 << BIT
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#define TEST_PIN(PORT, BIT) PIN ## PORT & 1 << BIT
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#define TOGGLE_PIN(PORT, BIT) PIN ## PORT |= 1 << BIT
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#define MODE_INPUT(PORT, BIT) CLEAR(DDR ## PORT, BIT)
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#define MODE_OUTPUT(PORT, BIT) SET(DDR ## PORT, BIT)
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#define IS_PIN_SET(PORT, BIT) (TEST_PIN(PORT, BIT)) == 0
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#define IS_PIN_CLEAR(PORT, BIT) (TEST_PIN(PORT, BIT)) == 1
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#define TURN_ON(_PORT, BIT) SET(PORT ## _PORT, BIT)
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#define TURN_OFF(_PORT, BIT) CLEAR(PORT ## _PORT, BIT)
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#define D1 0
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#define D2 1
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#define D3 2
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#define D4 4
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#define SW1 2
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#define SW2 4
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#define TIME 500
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#define LED1 B0
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int main() {
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MODE_OUTPUT(B, D2);
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TURN_OFF(B, D2);
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while(1) {
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TOGGLE_PIN(B, D2);
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_delay_ms(TIME);
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}
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} |