From 2a4001626f9a5f38487bc8b09e5d9bfc57e98295 Mon Sep 17 00:00:00 2001
From: Johan Kanflo <johan.kanflo@bitfuse.net>
Date: Mon, 22 Jun 2020 07:16:50 +0200
Subject: [PATCH] Replaced pycrc with crc16 (#220)

---
 dpsctl/dpsctl.py | 8 ++++----
 requirements.txt | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/dpsctl/dpsctl.py b/dpsctl/dpsctl.py
index 8fa55e35..bede31ae 100755
--- a/dpsctl/dpsctl.py
+++ b/dpsctl/dpsctl.py
@@ -60,10 +60,10 @@
                       unpack_cal_report, unpack_query_response, unpack_version_response)
 
 try:
-    from PyCRC.CRCCCITT import CRCCCITT
+    import crc16
 except ImportError:
-    print("Missing dependency pycrc:")
-    print(" sudo pip{} install pycrc"
+    print("Missing dependency crc16:")
+    print(" sudo pip{} install crc16"
           .format("3" if sys.version_info.major == 3 else ""))
     raise SystemExit()
 try:
@@ -616,7 +616,7 @@ def run_upgrade(comms, fw_file_name, args):
         content = file.read()
         if codecs.encode(content, 'hex')[6:8] != b'20' and not args.force:
             fail("The firmware file does not seem valid, use --force to force upgrade")
-        crc = CRCCCITT().calculate(content)
+        crc = crc16.crc16xmodem(content)
     chunk_size = 1024
     ret_dict = communicate(comms, create_upgrade_start(chunk_size, crc), args)
     if ret_dict["status"] == protocol.UPGRADE_CONTINUE:
diff --git a/requirements.txt b/requirements.txt
index 3250c739..140ee294 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-git+https://github.com/alexbutirskiy/PyCRC
+crc16==0.1.1
 pyserial==3.4