support tx flow control for chunked messages

rafcabezas · Oct 15, 2019 · 932745f · 932745f
1 parent b1c3712
commit 932745f
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/python/uds.py b/python/uds.py
@@ -293,7 +293,7 @@ def _isotp_thread(self, debug):
       self.panda.can_clear(self.bus)
       # clear rx buffer
       self.panda.can_clear(0xFFFF)
-      time.sleep(1)
+
       while True:
         messages = self.panda.can_recv()
         for rx_addr, rx_ts, rx_data, rx_bus in messages:
@@ -349,7 +349,8 @@ def _isotp_thread(self, debug):
               self.panda.can_send(self.tx_addr, msg, self.bus)
               if delay_ts > 0:
                 time.sleep(delay_ts / delay_div)
-            tx_frame["done"] = True
+            if end >= tx_frame["size"]:
+              tx_frame["done"] = True
 
         if not self.tx_queue.empty():
           req = self.tx_queue.get(block=False)