complete refactor to directly pass reports and interfaces

main.c

@@ -0,0 +1,24 @@
+#include "pico/stdlib.h"
+#include "pico/multicore.h"
+#include "pico/bootrom.h"
+#include "hardware/clocks.h"
+
+#include "usb_device.h"
+#include "usb_host.h"
+
+// main loop
+int main(void) {
+	// default 125MHz is not appropreate. Sysclock should be multiple of 12MHz.
+	set_sys_clock_khz(144000, true);
+
+	sleep_ms(10);
+
+	// run usb host on core 1
+	multicore_reset_core1();
+	multicore_launch_core1(usb_host_main);
+
+	// run usb device on core 0
+	usb_device_main();
+
+	return 0;
+}