fix warning, change hil jlink for feather nrf52840

examples/device/cdc_msc_throughput/src/main.c

@@ -99,9 +99,9 @@ void tud_msc_inquiry_cb(uint8_t lun, uint8_t vendor_id[8], uint8_t product_id[16
   const char vid[] = "TinyUSB";
   const char pid[] = "Mass Storage";
   const char rev[] = "1.0";
-  memcpy(vendor_id,  vid, strlen(vid));
-  memcpy(product_id, pid, strlen(pid));
-  memcpy(product_rev, rev, strlen(rev));
+  (void) strncpy((char*) vendor_id, vid, 8);
+  (void) strncpy((char*) product_id, pid, 16);
+  (void) strncpy((char*) product_rev, rev, 4);
 }
 
 bool tud_msc_test_unit_ready_cb(uint8_t lun) {

test/hil/hil_test.py

@@ -782,7 +782,8 @@ def test_device_cdc_msc_throughput(board):
             pass
 
     # Put tty in raw mode so dd sees pure binary throughput.
-    run_cmd(f'stty -F {tty} raw -echo')
+    rs = run_cmd(f'timeout 30 stty -F {tty} raw -echo')
+    assert rs.returncode == 0, f'stty failed: {rs.stdout.decode()}'
 
     # Payload aim: ~5 s per direction at FS (~830 kB/s), much less at HS.
     msc_count = 2 if is_fs else 16    # bs=1M

test/hil/tinyusb.json

@@ -43,7 +43,7 @@
             },
             "flasher": {
                 "name": "jlink",
-                "uid": "000682804350",
+                "uid": "681295394",
                 "args": "-device nrf52840_xxaa"
             }
         },