fix panda serial write

commaai · Jan 19, 2018 · 21f8195 · 21f8195
1 parent af74aa9
commit 21f8195
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/python/__init__.py b/python/__init__.py
@@ -425,7 +425,10 @@ def serial_read(self, port_number):
     return b''.join(ret)
 
   def serial_write(self, port_number, ln):
-    return self._handle.bulkWrite(2, struct.pack("B", port_number) + ln)
+    ret = 0
+    for i in range(0, len(ln), 0x20):
+      ret += self._handle.bulkWrite(2, struct.pack("B", port_number) + ln[i:i+0x20])
+    return ret
 
   def serial_clear(self, port_number):
     """Clears all messages (tx and rx) from the specified internal uart