63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
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#include <avr/interrupt.h>
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#include <avr/sleep.h>
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#include <dio.h>
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/*
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const struct avr_mmcu_vcd_trace_t _mytrace[] _MMCU_ = {
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{ AVR_MCU_VCD_SYMBOL("PORTB"), .what = (void *)&PORTB, },
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};
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*/
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#define FPS 100
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#define FPS_MS 1000 / FPS
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#define MULT 5
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typedef struct {
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uint8_t value;
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int8_t inc;
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} counter_t;
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void step_counter(counter_t *counter) {
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int16_t value = counter->value;
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value += counter->inc;
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if (value >= 255) {
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counter->value = 255;
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counter->inc = -1;
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} else if (value <= 0) {
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counter->value = 0;
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counter->inc = 1;
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} else {
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counter->value = value;
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}
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}
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int main(void) {
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dio_t dio0 = (dio_t){ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 0 };
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dio_t dio1 = (dio_t){ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 1 };
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dio_set_direction(&dio0, LINE_OUT);
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dio_set_direction(&dio1, LINE_OUT);
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// GTCCR = _BV(TSM) | _BV(PSR0);
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TCCR0A = _BV(COM0A1) | _BV(COM0A0) | _BV(COM0B1) | _BV(COM0B0) | _BV(WGM01) | _BV(WGM00);
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TCCR0B = _BV(WGM02) | _BV(CS00);
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counter_t red = (counter_t){ .value = 128, .inc = -1 };
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counter_t blue = (counter_t){ .value = 128, .inc = -1 };
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// GTCCR &= ~_BV(TSM);
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while(1) {
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step_counter(&red);
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step_counter(&blue);
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OCR0A = red.value;
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OCR0B = blue.value;
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_delay_ms(FPS_MS);
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}
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return 0;
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}
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