drtio: add ping timeout during link init

2018-07-26 20:27:53 +08:00 · 2018-07-26 20:27:53 +08:00 · 83de8b2ba2
commit 83de8b2ba2
parent 446f791180
1 changed files with 3 additions and 0 deletions
--- a/artiq/firmware/runtime/rtio_mgt.rs
+++ b/artiq/firmware/runtime/rtio_mgt.rs
@ -101,6 +101,9 @@ pub mod drtio {
                return 0
            }
            count += 1;
+            if count > 200 {
+                return 0;
+            }
            drtioaux::send_link(linkno, &drtioaux::Packet::EchoRequest).unwrap();
            io.sleep(100).unwrap();
            let pr = drtioaux::recv_link(linkno);