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#include <cstddef>
#include <cstdint>
#include <array>
#include "pico/stdlib.h"
#include "pico/sleep.h"
#include "hardware/gpio.h"
static constexpr std::size_t button_gpio = 6;
static constexpr std::size_t led_gpio = 7;
static constexpr std::array<std::size_t, 3> gpio_on_sequence { 2, 4, 3 };
static constexpr std::array<std::size_t, 3> gpio_off_sequence { 3, 4, 2 };
static constexpr std::size_t delay_ms = 2000;
static void init_dout(std::size_t gpio, bool state)
{
gpio_init(gpio);
gpio_set_dir(gpio, GPIO_OUT);
gpio_put(gpio, state);
}
int main()
{
bool state = false;
// disable RGB LED (inverted logic)
init_dout(25, true);
init_dout(16, true);
init_dout(17, true);
// init button LED
init_dout(led_gpio, state);
// init button IO
gpio_init(button_gpio);
gpio_set_dir(button_gpio, GPIO_IN);
// init relay GPIOs
for (auto const & relay : gpio_off_sequence)
{
init_dout(relay, state);
}
while (true)
{
sleep_run_from_xosc();
sleep_goto_dormant_until_pin(button_gpio, true, false); // edge, falling
sleep_power_up();
state = !state;
gpio_put(led_gpio, state);
auto const & sequence = state ? gpio_on_sequence : gpio_off_sequence;
for (auto const & relay : sequence)
{
gpio_put(relay, state);
sleep_ms(delay_ms);
}
}
}
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