/* main.c - Main entry point and event loop for sbc-harness
 *
 * Copyright (C) 2024  Luke T. Shumaker <lukeshu@lukeshu.com>
 * SPDX-Licence-Identifier: AGPL-3.0-or-later
 */

/* newlib */
#include <string.h> /* for strlen() */

/* pico-sdk */
#include "pico/stdlib.h"

/* local */
#include "coroutine.h"
#include "usb_common.h"
#include "usb_keyboard.h"

COROUTINE hello_world_cr(void *_chan) {
	const char *msg = "Hello world!\n";
	usb_keyboard_chan_t *chan = _chan;
	cr_begin();

	for (size_t i = 0;; i = (i+1) % strlen(msg)) {
		cr_chan_req(chan, NULL, msg[i]);
	}

	cr_end();
}

int main() {
	/* initialization */
	stdio_uart_init();
	//gpio_init(PICO_DEFAULT_LED_PIN);
	//gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);

	usb_common_earlyinit();
	usb_keyboard_init();
	usb_common_lateinit();

	/* set up coroutines */
	coroutine_add(usb_common_cr, NULL);
	usb_keyboard_chan_t keyboard_chan = {0};
	coroutine_add(usb_keyboard_cr, &keyboard_chan);
	coroutine_add(hello_world_cr, &keyboard_chan);

	/* Event loop. */
	coroutine_main();
}