Check USB connection

Check if USB cable is connected
#include #include <runtime_info.h>
#include <dlog.h> // for logging purposes

void
check_usb_connection() {
	bool value;

	if(runtime_info_get_value_bool(RUNTIME_INFO_KEY_USB_CONNECTED, &value) == RUNTIME_INFO_ERROR_NONE) {
		LOGI("USB is %s", value? "connected" : "disconnected");
	}
}

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