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/* 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();
}
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