91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
#include <avr/interrupt.h>
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#include <avr/sleep.h>
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#include <dio.h>
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#include <rfm.h>
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#include <stdbool.h>
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#include <string.h>
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typedef enum {
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lme_off,
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lme_normal,
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lme_spooky,
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lme_eerie,
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} lantern_msg_e;
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dio_t buttons[4] = {
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{ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 5 },
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{ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 6 },
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{ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 7 },
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{ .ddr = &DDRD, .port = &PORTD, .pin = &PIND, .addr = 6 },
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};
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typedef struct {
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bool button_press[4];
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} status_flags_t;
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status_flags_t status_flags = {
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.button_press = { false, false, false, false }
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};
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ISR(INT2_vect) {
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for (int i = 0; i < 4; i++) {
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status_flags.button_press[i] = dio_read(&buttons[i]);
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}
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}
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int main(void) {
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EIMSK = 1 << INT2;
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EICRA |= 1 << ISC21 | 1 << ISC20;
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dio_t int2 = { .ddr = &DDRD, .port = &PORTD, .pin = &PIND, .addr = 2 };
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dio_set_direction(&int2, LINE_IN);
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dio_set(&int2, false);
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rfm_t radio = (rfm_t){
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.spi = {
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.clock = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 1 },
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.data_out = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 2 },
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.data_in = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 3 },
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.chip_select = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 4 },
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},
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.irq = { .ddr = &DDRE, .port = &PORTE, .pin = &PINE, .addr = 6 },
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.reset = { .ddr = &DDRD, .port = &PORTD, .pin = &PIND, .addr = 4 },
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};
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rfm_error_e error;
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rfm_init(&radio, (uint8_t [4]){ 0xde, 0xca, 0xfb, 0xad }, 4, &error);
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set_sleep_mode(SLEEP_MODE_IDLE);
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while(1) {
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sei();
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sleep_mode();
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cli();
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uint8_t msg;
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if (status_flags.button_press[0]) {
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status_flags.button_press[0] = false;
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msg = lme_normal;
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} else if (status_flags.button_press[1]) {
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status_flags.button_press[1] = false;
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msg = lme_spooky;
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} else if (status_flags.button_press[2]) {
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status_flags.button_press[2] = false;
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msg = lme_eerie;
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} else if (status_flags.button_press[3]) {
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status_flags.button_press[3] = false;
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msg = lme_off;
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} else {
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continue;
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}
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rfm_transmit(&radio, &msg, 1);
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interrupt_flags_t flags = rfm_interrupts(&radio);
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while(!flags.packet_sent) {
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_delay_ms(1);
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flags = rfm_interrupts(&radio);
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}
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rfm_standby(&radio);
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}
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}
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