gearmulator

commit ad42e3e6f72cd658e081b0618818d22b78c948a7
parent f8b859002067d73596d0d5533e68a6813030d290
Author: dsp56300 <dsp56300@users.noreply.github.com>
Date:   Wed, 28 Jul 2021 20:44:08 +0200

fix wrong checksum

Diffstat:
M
source/virusLib/microcontroller.cpp
 | 
13
+++++++++----

1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/source/virusLib/microcontroller.cpp b/source/virusLib/microcontroller.cpp
@@ -267,14 +267,19 @@ bool Microcontroller::sendSysex(const std::vector<uint8_t>& _data, bool _cancelI
 		response.push_back(_bank);
 		response.push_back(_program);
 
-		uint8_t cs = deviceId + 11 + response[7];
-		size_t idx = 9;
 		for(const auto value : _dump)
 		{
 			response.push_back(value);
-			cs += value;
 		}
-		response.push_back(cs & 0x7f); // checksum
+
+		// checksum
+		uint8_t cs = 0;
+
+		for(size_t i=5; i<response.size(); ++i)
+			cs += response[i];
+
+		response.push_back(cs & 0x7f);
+
 		response.push_back(M_ENDOFSYSEX);
 
 		_responses.emplace_back(std::move(ev));