avr/lux-sensor-reader/main.c

#include <dio.h>
#include <display.h>
#include <i2c.h>
#include <stdio.h>
#include <stdlib.h>

typedef enum {
    ls_ok,
    ls_unrecognized,
    ls_not_responding,
    ls_powered_down,
} lux_sensor_status_e;

typedef struct lux_sensor_s lux_sensor_t;

struct lux_sensor_s {
    uint16_t (*read_total_lux)(void *, lux_sensor_status_e *);
    uint16_t (*read_ir)(void *, lux_sensor_status_e *);
    uint16_t (*read_visible)(void *, lux_sensor_status_e *);

    void *impl;
};

uint16_t tsl2561_read_total_lux(void *sensor, lux_sensor_status_e *status) {
    if (*status != ls_ok) return 0;

    return 0;
}

uint16_t tsl2561_read_ir(void *sensor, lux_sensor_status_e *status) {
    if (*status != ls_ok) return 0;

    return 0;
}

uint16_t tsl2561_read_visible(void *sensor, lux_sensor_status_e *status) {
    if (*status != ls_ok) return 0;

    return 0;
}

lux_sensor_t tsl2561_init(dio_t clock, dio_t data) {
    i2c_bus_t *bus = malloc(sizeof(i2c_bus_t));
    bus->sda = data;
    bus->scl = clock;
    return (lux_sensor_t){
        .read_total_lux = tsl2561_read_total_lux,
        .read_ir = tsl2561_read_ir,
        .read_visible = tsl2561_read_visible,
        .impl = (void *)bus,
    };
}

uint16_t ls_read_total_lux(lux_sensor_t *sensor, lux_sensor_status_e *status) {
    return sensor->read_total_lux(sensor->impl, status);
}

uint16_t ls_read_ir(lux_sensor_t *sensor, lux_sensor_status_e *status) {
    return sensor->read_ir(sensor->impl, status);
}

uint16_t ls_read_visible(lux_sensor_t *sensor, lux_sensor_status_e *status) {
    return sensor->read_visible(sensor->impl, status);
}


int main(void) {
    display_t display = {
        .reg = {
            .output         = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 7 },
            .shift_clock    = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 6 },
            .latch_clock    = { .ddr = &DDRF, .port = &PORTF, .pin = &PINF, .addr = 5 },
        },
    };

    lux_sensor_t sensor = tsl2561_init(
        (dio_t){ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 5 },
        (dio_t){ .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 6 }
    );

    int count = 0;
    while (1) {
        lux_sensor_status_e sensor_status = ls_ok;
        display_init(&display);
        uint16_t total_lux = ls_read_total_lux(&sensor, &sensor_status);
        uint16_t ir = ls_read_ir(&sensor, &sensor_status);

        char msg[15];
        if (sensor_status == ls_ok) {
            snprintf(msg, 20, "[%d] %d %d", count, total_lux, ir);
        } else {
            snprintf(msg, 20, "[%d] error", count);
        }

        display_clear(&display);
        display_write_message(&display, msg);
        _delay_ms(1000);

        count++;
    }

    return 0;
}