From 568a9043e9e27eeb9f4ac7657e85b878f853b667 Mon Sep 17 00:00:00 2001
From: Paolo Devoti <paolo.devoti@technowise.it>
Date: Mon, 22 Jul 2019 08:17:13 +0200
Subject: [PATCH] fix ord is unneded on byte values

---
 modem/base.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modem/base.py b/modem/base.py
index 40b2abe..c410b9e 100644
--- a/modem/base.py
+++ b/modem/base.py
@@ -21,7 +21,7 @@ def calc_checksum(self, data, checksum=0):
             '0x3c'
 
         '''
-        return (sum(map(ord, data)) + checksum) % 256
+        return (sum(map(lambda x: x, data)) + checksum) % 256
 
     def calc_crc16(self, data, crc=0):
         '''