2 files changed, 13 insertions, 0 deletions
diff --git a/src/generic/usb_cdc.c b/src/generic/usb_cdc.c
index 7f6b2f34..d395a3c0 100644
--- a/src/generic/usb_cdc.c
+++ b/src/generic/usb_cdc.c
@@ -402,6 +402,15 @@ usb_req_set_configuration(struct usb_ctrlrequest *req)
 }
 
 static struct usb_cdc_line_coding line_coding;
+static uint8_t line_control_state;
+
+static void
+check_reboot(void)
+{
+    if (line_coding.dwDTERate == 1200 && !(line_control_state & 0x01))
+        // A baud of 1200 is an Arduino style request to enter the bootloader
+        usb_request_bootloader();
+}
 
 static void
 usb_req_set_line_coding(struct usb_ctrlrequest *req)
@@ -412,6 +421,7 @@ usb_req_set_line_coding(struct usb_ctrlrequest *req)
         return;
     }
     usb_do_xfer(&line_coding, sizeof(line_coding), UX_READ);
+    check_reboot();
 }
 
 static void
@@ -432,7 +442,9 @@ usb_req_set_line(struct usb_ctrlrequest *req)
         usb_do_stall();
         return;
     }
+    line_control_state = req->wValue;
     usb_do_xfer(NULL, 0, UX_SEND);
+    check_reboot();
 }
 
 static void
diff --git a/src/generic/usb_cdc.h b/src/generic/usb_cdc.h
index 4771d08c..1763a843 100644
--- a/src/generic/usb_cdc.h
+++ b/src/generic/usb_cdc.h
@@ -21,6 +21,7 @@ int_fast8_t usb_send_ep0_progmem(const void *data, uint_fast8_t len);
 void usb_stall_ep0(void);
 void usb_set_address(uint_fast8_t addr);
 void usb_set_configure(void);
+void usb_request_bootloader(void);
 
 // usb_cdc.c
 void usb_notify_bulk_in(void);