#include <stdio.h>
#include "pico/stdlib.h"
#include "pico/cyw43_arch.h"
#include "pwm.h"

// Alle 21 Kanaele synchron:
//   500 ms Ramp-Up, 500 ms voll an, 500 ms Ramp-Down, 500 ms aus.
static void set_all(uint16_t level) {
    for (unsigned ch = 0; ch < PWM_TOTAL_COUNT; ch++) {
        pwm_ch_set(ch, level);
    }
}

int main(void) {
    stdio_init_all();

    if (cyw43_arch_init()) {
        printf("cyw43_arch_init fehlgeschlagen\n");
        return -1;
    }

    pwm_all_init();

    printf("ampel: alle %u Kanaele synchron Ramp-Up / An / Ramp-Down / Aus\n",
           PWM_TOTAL_COUNT);

    const int ramp_steps = 50;
    const int step_ms = 500 / ramp_steps;

    while (true) {
        cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, true);
        for (int i = 0; i <= ramp_steps; i++) {
            set_all((uint16_t)((i * PWM_MAX_LEVEL) / ramp_steps));
            sleep_ms(step_ms);
        }

        set_all(PWM_MAX_LEVEL);
        sleep_ms(500);

        cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, false);
        for (int i = ramp_steps; i >= 0; i--) {
            set_all((uint16_t)((i * PWM_MAX_LEVEL) / ramp_steps));
            sleep_ms(step_ms);
        }

        set_all(0);
        sleep_ms(500);
    }
}