StackRduino
diff --git a/‎stmhal/usb.c‎
Lines changed: 1 addition & 0 deletions b/‎stmhal/usb.c‎
Lines changed: 1 addition & 0 deletions
@@ -440,6 +440,7 @@ STATIC mp_obj_t pyb_usb_vcp_recv(mp_uint_t n_args, const mp_obj_t *args, mp_map_
     if (o_ret != MP_OBJ_NULL) {
         return mp_obj_new_int(ret); // number of bytes read into given buffer
     } else {
+        vstr.len = ret; // set actual number of bytes read
         return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr); // create a new buffer
     }
 }
Original file line number	Diff line number	Diff line change
`@@ -440,6 +440,7 @@ STATIC mp_obj_t pyb_usb_vcp_recv(mp_uint_t n_args, const mp_obj_t *args, mp_map_`
`440`	`440`	`if (o_ret != MP_OBJ_NULL) {`
`441`	`441`	`return mp_obj_new_int(ret); // number of bytes read into given buffer`
`442`	`442`	`} else {`
	`443`	`+ vstr.len = ret; // set actual number of bytes read`
`443`	`444`	`return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr); // create a new buffer`
`444`	`445`	`}`
`445`	`446`	`}`