From 82c90d70279c9522520f864daa72156fdacf38b1 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sun, 7 Jul 2013 02:46:24 +0000
Subject: bootloader now checks csum

git-svn-id: https://svn.spreadspace.org/pic/trunk@47 a09c6847-51d9-44de-8ef2-e725cf50f3c7
---
 downloader/downloader.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'downloader/downloader.py')

diff --git a/downloader/downloader.py b/downloader/downloader.py
index f90eced..b85326f 100755
--- a/downloader/downloader.py
+++ b/downloader/downloader.py
@@ -108,9 +108,11 @@ def exec_command(dev, cmd, param, answer):
                      5: "address invalid", 6: "address prohibited",
                      7: "value out of bounds" }
 
-    cstr = bytearray(struct.pack('<BB', cmd, 0) + param)
+    dev.flushInput()
+    dev.flushOutput()
+
+    cstr = bytearray(struct.pack('<BB', cmd, len(param)+3) + param)
     cstr.extend(struct.pack("<B", calc_csum(cstr)))
-    cstr[1] = len(cstr)
     dev.write(cstr)
 
     astr = bytearray()
-- 
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