37 lines
646 B
C
37 lines
646 B
C
#include <avr/io.h>
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#include "rtc.h"
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#include "i2c.h"
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void rtc_int0_init(void)
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{
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INT0_DIR &= ~(1<<INT0_PIN);
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INT0_PORT |= (1<<INT0_PIN);
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GICR |= (1<<INT0);
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}
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void rtc_int1_init(void)
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{
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INT1_DIR &= ~(1<<INT1_PIN);
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INT1_PORT |= (1<<INT1_PIN);
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GICR |= (1<<INT1);
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}
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void rtc_set_time(uint8_t part, uint8_t value)
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{
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uint8_t bcd = DEC_2_BCD(value);
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i2c_writebuf(RTC_I2C_ADDR, part, 1, &bcd);
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}
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struct time rtc_read_time(void)
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{
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uint8_t buffer[3];
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i2c_readbuf(RTC_I2C_ADDR, 0x02, 3, buffer);
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struct time curr_time = {
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BCD_2_DEC(buffer[2]),
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BCD_2_DEC(buffer[1]),
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BCD_2_DEC(buffer[0])
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};
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return curr_time;
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} |