implement CEMU_USB_MSGT_DT_GET_STATUS
card_emu can now report its current satus upon request.
diff --git a/firmware/src_simtrace/card_emu.h b/firmware/src_simtrace/card_emu.h
index 95d2bae..2b2d3f1 100644
--- a/firmware/src_simtrace/card_emu.h
+++ b/firmware/src_simtrace/card_emu.h
@@ -27,6 +27,7 @@
struct llist_head *card_emu_get_uart_tx_queue(struct card_handle *ch);
struct llist_head *card_emu_get_usb_tx_queue(struct card_handle *ch);
void card_emu_have_new_uart_tx(struct card_handle *ch);
+void card_emu_report_status(struct card_handle *ch);
#define ENABLE_TX 0x01
#define ENABLE_RX 0x02