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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
*/
#include <string.h> /* for strlen() */
#include <stdio.h> /* for printf() */
#include "pico/stdlib.h"
#include <libcr/coroutine.h>
#include <libusb/usb_common.h>
#include "hw/rp2040_hwspi.h"
#include "hw/w5500.h"
#include "usb_keyboard.h"
COROUTINE hello_world_cr(void *_chan) {
const char *msg = "Hello world!\n";
usb_keyboard_rpc_t *chan = _chan;
cr_begin();
for (size_t i = 0;; i = (i+1) % strlen(msg)) {
int result = usb_keyboard_rpc_send_req(chan, (uint32_t)msg[i]);
if (result < 1) {
printf("error!\n");
break;
}
}
cr_end();
}
int main() {
/* initialization */
stdio_uart_init();
struct rp2040_hwspi dev_spi;
struct w5500 dev_w5500;
rp2040_hwspi_init(&dev_spi, "W5500", RP2040_HWSPI_0,
SPI_MODE_0, /* the W5500 supports mode 0 or mode 3 */
80*1000*1000, /* run at the W5500's max rate of 80MHz */
16, /* PIN_MISO */
19, /* PIN_MOSI */
18, /* PIN_CLK */
17); /* PIN_CS */
w5500_init(&dev_w5500, "W5500", &dev_spi,
21, /* PIN_INTR */
20); /* PIN_RESET */
usb_common_earlyinit();
usb_keyboard_init();
usb_common_lateinit();
/* set up coroutines */
coroutine_add(usb_common_cr, NULL);
usb_keyboard_rpc_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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