UDS: Fix Write Data by Address (commaai#2023)

adurham · Sep 16, 2024 · 2526d1e · 2526d1e
1 parent 8545c68
commit 2526d1e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/python/uds.py b/python/uds.py
@@ -820,7 +820,7 @@ def write_memory_by_address(self, memory_address: int, memory_size: int, data_re
     data += struct.pack('!I', memory_size)[4 - memory_size_bytes:]
 
     data += data_record
-    self._uds_request(SERVICE_TYPE.WRITE_MEMORY_BY_ADDRESS, subfunction=0x00, data=data)
+    self._uds_request(SERVICE_TYPE.WRITE_MEMORY_BY_ADDRESS, subfunction=None, data=data)
 
   def clear_diagnostic_information(self, dtc_group_type: DTC_GROUP_TYPE):
     data = struct.pack('!I', dtc_group_type)[1:]  # 3 bytes