110 lines
2.1 KiB
C
110 lines
2.1 KiB
C
#include <stdbool.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#include <inttypes.h>
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#define PORT_LED PORTB
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#define PIN_SWITCH PIND
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bool do_round(uint8_t *seq, int len);
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void display_seq(uint8_t *seq, int len);
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bool read_input(uint8_t *seq, int len);
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int main(){
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// Port B LED
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DDRB = 0xFF;
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// Port A Switch
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DDRD = 0x00;
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// Values from 0-7 representing the LED position
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uint8_t seq[] = {4,2,4,5,1,0,3};
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if (do_round(seq,7)) {
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while (true)
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{
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PORT_LED = 0x55;
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_delay_ms(250);
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PORT_LED = 0xAA;
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_delay_ms(250);
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}
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}else{
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while (true)
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{
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PORT_LED = 0xF0;
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_delay_ms(250);
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PORT_LED = 0x0F;
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_delay_ms(250);
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}
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}
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}
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bool do_round(uint8_t *seq, int len){
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for (int i = 2; i < len; i++)
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{
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display_seq(seq,i);
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if (!read_input(seq,i)){
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// Failed
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return false;
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}
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}
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return true;
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}
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void display_seq(uint8_t *seq, int len){
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// Turn off all LEDs
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PORT_LED = 0xFF;
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_delay_ms(1000);
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for (int i = 0; i < len; i++)
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{
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PORT_LED = (0xFF ^ (1 << seq[i] ));
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_delay_ms(1000);
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// Turn off LEDs
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PORT_LED = 0xFF;
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_delay_ms(250);
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}
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// Turn off all LEDs
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PORT_LED = 0xFF;
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}
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bool read_input(uint8_t *seq, int len){
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for (int i = 0; i < len; i++)
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{
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uint8_t expected = 0xFF ^ (1 << seq[i]);
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bool run = true;
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while (run)
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{
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uint8_t input = PIN_SWITCH;
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if (input < 0xFF){
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// A button is pressed
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if (input == expected){
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run = false;
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// Wait for button to release
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while (PIN_SWITCH != 0xFF)
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{
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}
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// "debounce"
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_delay_ms(50);
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}else{
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return false;
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}
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}
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}
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}
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return true;
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}
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