36 lines
982 B
C
36 lines
982 B
C
#include <avr/io.h>
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void
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Taster_init (void){
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DDRD &= ~(0b111<<5); /* Set bit 5-7 of Data Direction Register D as input */
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DDRC &= ~(1<<2); /* Set bit 2 of Data Direction Register C as input */
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PORTD |= (0b111<<5); /* Initialize bit 5-7 of PORTD as for pull up resistor */
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PORTC |= (1<<PINC2); /* Initialize bit 2 of PORTC as for pull up resistor */
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/** Disable JTAG so Pin 2 of PORTC can be used as a GPIO
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* Command needs to be run twice - see MCU Control Register Description (23.8.1)
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* Bits 7 – JTD: JTAG Interface Disable
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* [..] The application software must write this bit to the desired value
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* twice within four cycles to change its value. [...]
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*/
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MCUCR |= (1<<JTD);
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MCUCR |= (1<<JTD);
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}
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uint8_t
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Taster1_get (void){
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return ((PIND & (1<<PIND7)) == 0);
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}
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uint8_t
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Taster2_get (void){
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return ((PIND & (1<<PIND6)) == 0);
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}
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uint8_t
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Taster3_get (void){
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return ((PIND & (1<<PIND5)) == 0);
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}
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uint8_t
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Taster4_get (void){
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return ((PINC & (1<<PINC2)) == 0);
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} |