From de178ea79ccb66f0ed15f0ea98e93068b2e41ca6 Mon Sep 17 00:00:00 2001
From: Greg Hogan <gregjhogan@gmail.com>
Date: Tue, 22 Feb 2022 16:14:59 -0800
Subject: [PATCH] script to clear DTCs

---
 selfdrive/debug/clear_dtc.py | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100755 selfdrive/debug/clear_dtc.py

diff --git a/selfdrive/debug/clear_dtc.py b/selfdrive/debug/clear_dtc.py
new file mode 100755
index 000000000..f4d38367b
--- /dev/null
+++ b/selfdrive/debug/clear_dtc.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+import sys
+from subprocess import check_output, CalledProcessError
+from panda import Panda
+from panda.python.uds import UdsClient, MessageTimeoutError, SESSION_TYPE, DTC_GROUP_TYPE
+
+try:
+  check_output(["pidof", "boardd"])
+  print("boardd is running, please kill openpilot before running this script! (aborted)")
+  sys.exit(1)
+except CalledProcessError as e:
+  if e.returncode != 1: # 1 == no process found (boardd not running)
+    raise e
+
+panda = Panda()
+panda.set_safety_mode(Panda.SAFETY_ELM327)
+address = 0x7DF # functional (broadcast) address
+uds_client = UdsClient(panda, address, bus=0, debug=False)
+print("extended diagnostic session ...")
+try:
+  uds_client.diagnostic_session_control(SESSION_TYPE.EXTENDED_DIAGNOSTIC)
+except MessageTimeoutError:
+  pass # functional address isn't properly handled so a timeout occurs
+print("clear diagnostic info ...")
+try:
+  uds_client.clear_diagnostic_information(DTC_GROUP_TYPE.ALL)
+except MessageTimeoutError:
+  pass # functional address isn't properly handled so a timeout occurs
+print("")
+print("you may need to power cycle your vehicle now")