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Code Issues Releases Activity

Precompute CRC table in a global constant. Also if datasize for unknown object

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is > 256 ignore it since corrupt data.
This commit is contained in:
James Cotton 2012-02-13 16:27:44 -06:00
parent d018d93e88
commit 81ceb9c17a
1 changed files with 32 additions and 19 deletions
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51
ground/openpilotgcs/src/plugins/uavobjects/uavobjecttemplate.m
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@ -4,6 +4,25 @@ function [] = OPLogConvert(varargin)
outputType='mat'; %Default output is a .mat file
checkCRC = false;
global crc_table;
crc_table = [ ...
hex2dec('00'),hex2dec('07'),hex2dec('0e'),hex2dec('09'),hex2dec('1c'),hex2dec('1b'),hex2dec('12'),hex2dec('15'),hex2dec('38'),hex2dec('3f'),hex2dec('36'),hex2dec('31'),hex2dec('24'),hex2dec('23'),hex2dec('2a'),hex2dec('2d'), ...
hex2dec('70'),hex2dec('77'),hex2dec('7e'),hex2dec('79'),hex2dec('6c'),hex2dec('6b'),hex2dec('62'),hex2dec('65'),hex2dec('48'),hex2dec('4f'),hex2dec('46'),hex2dec('41'),hex2dec('54'),hex2dec('53'),hex2dec('5a'),hex2dec('5d'), ...
hex2dec('e0'),hex2dec('e7'),hex2dec('ee'),hex2dec('e9'),hex2dec('fc'),hex2dec('fb'),hex2dec('f2'),hex2dec('f5'),hex2dec('d8'),hex2dec('df'),hex2dec('d6'),hex2dec('d1'),hex2dec('c4'),hex2dec('c3'),hex2dec('ca'),hex2dec('cd'), ...
hex2dec('90'),hex2dec('97'),hex2dec('9e'),hex2dec('99'),hex2dec('8c'),hex2dec('8b'),hex2dec('82'),hex2dec('85'),hex2dec('a8'),hex2dec('af'),hex2dec('a6'),hex2dec('a1'),hex2dec('b4'),hex2dec('b3'),hex2dec('ba'),hex2dec('bd'), ...
hex2dec('c7'),hex2dec('c0'),hex2dec('c9'),hex2dec('ce'),hex2dec('db'),hex2dec('dc'),hex2dec('d5'),hex2dec('d2'),hex2dec('ff'),hex2dec('f8'),hex2dec('f1'),hex2dec('f6'),hex2dec('e3'),hex2dec('e4'),hex2dec('ed'),hex2dec('ea'), ...
hex2dec('b7'),hex2dec('b0'),hex2dec('b9'),hex2dec('be'),hex2dec('ab'),hex2dec('ac'),hex2dec('a5'),hex2dec('a2'),hex2dec('8f'),hex2dec('88'),hex2dec('81'),hex2dec('86'),hex2dec('93'),hex2dec('94'),hex2dec('9d'),hex2dec('9a'), ...
hex2dec('27'),hex2dec('20'),hex2dec('29'),hex2dec('2e'),hex2dec('3b'),hex2dec('3c'),hex2dec('35'),hex2dec('32'),hex2dec('1f'),hex2dec('18'),hex2dec('11'),hex2dec('16'),hex2dec('03'),hex2dec('04'),hex2dec('0d'),hex2dec('0a'), ...
hex2dec('57'),hex2dec('50'),hex2dec('59'),hex2dec('5e'),hex2dec('4b'),hex2dec('4c'),hex2dec('45'),hex2dec('42'),hex2dec('6f'),hex2dec('68'),hex2dec('61'),hex2dec('66'),hex2dec('73'),hex2dec('74'),hex2dec('7d'),hex2dec('7a'), ...
hex2dec('89'),hex2dec('8e'),hex2dec('87'),hex2dec('80'),hex2dec('95'),hex2dec('92'),hex2dec('9b'),hex2dec('9c'),hex2dec('b1'),hex2dec('b6'),hex2dec('bf'),hex2dec('b8'),hex2dec('ad'),hex2dec('aa'),hex2dec('a3'),hex2dec('a4'), ...
hex2dec('f9'),hex2dec('fe'),hex2dec('f7'),hex2dec('f0'),hex2dec('e5'),hex2dec('e2'),hex2dec('eb'),hex2dec('ec'),hex2dec('c1'),hex2dec('c6'),hex2dec('cf'),hex2dec('c8'),hex2dec('dd'),hex2dec('da'),hex2dec('d3'),hex2dec('d4'), ...
hex2dec('69'),hex2dec('6e'),hex2dec('67'),hex2dec('60'),hex2dec('75'),hex2dec('72'),hex2dec('7b'),hex2dec('7c'),hex2dec('51'),hex2dec('56'),hex2dec('5f'),hex2dec('58'),hex2dec('4d'),hex2dec('4a'),hex2dec('43'),hex2dec('44'), ...
hex2dec('19'),hex2dec('1e'),hex2dec('17'),hex2dec('10'),hex2dec('05'),hex2dec('02'),hex2dec('0b'),hex2dec('0c'),hex2dec('21'),hex2dec('26'),hex2dec('2f'),hex2dec('28'),hex2dec('3d'),hex2dec('3a'),hex2dec('33'),hex2dec('34'), ...
hex2dec('4e'),hex2dec('49'),hex2dec('40'),hex2dec('47'),hex2dec('52'),hex2dec('55'),hex2dec('5c'),hex2dec('5b'),hex2dec('76'),hex2dec('71'),hex2dec('78'),hex2dec('7f'),hex2dec('6a'),hex2dec('6d'),hex2dec('64'),hex2dec('63'), ...
hex2dec('3e'),hex2dec('39'),hex2dec('30'),hex2dec('37'),hex2dec('22'),hex2dec('25'),hex2dec('2c'),hex2dec('2b'),hex2dec('06'),hex2dec('01'),hex2dec('08'),hex2dec('0f'),hex2dec('1a'),hex2dec('1d'),hex2dec('14'),hex2dec('13'), ...
hex2dec('ae'),hex2dec('a9'),hex2dec('a0'),hex2dec('a7'),hex2dec('b2'),hex2dec('b5'),hex2dec('bc'),hex2dec('bb'),hex2dec('96'),hex2dec('91'),hex2dec('98'),hex2dec('9f'),hex2dec('8a'),hex2dec('8d'),hex2dec('84'),hex2dec('83'), ...
hex2dec('de'),hex2dec('d9'),hex2dec('d0'),hex2dec('d7'),hex2dec('c2'),hex2dec('c5'),hex2dec('cc'),hex2dec('cb'),hex2dec('e6'),hex2dec('e1'),hex2dec('e8'),hex2dec('ef'),hex2dec('fa'),hex2dec('fd'),hex2dec('f4'),hex2dec('f3') ...
];
if nargin==0
%%
@ -34,9 +53,18 @@ correctSyncByte=hex2dec('3C');
% Parse log file, entry by entry
prebuf = fread(fid, 12, 'uint8');
log_size = dir(logfile);
log_size = log_size.bytes;
last_print = 0;
while (1)
if (feof(fid)); break; end
if (ftell(fid) / log_size - last_print) > 0.01
disp([num2str(ftell(fid) / log_size * 100) '%']);
last_print = ftell(fid) / log_size;
end
%% Read message header
% get sync field (0x3C, 1 byte)
sync = fread(fid, 1, 'uint8');
@ -73,6 +101,9 @@ $(SWITCHCODE)
otherwise
disp(['Unknown object ID: 0x' dec2hex(objID)]);
msgBytesLeft = datasize - 1 - 1 - 2 - 4;
if msgBytesLeft > 255
msgBytesLeft = 0;
end
fread(fid, msgBytesLeft, 'uint8');
end
catch
@ -139,25 +170,7 @@ function OPLog2csv(structIn, structName, logfile)
dlmwrite(csvfile, matOut, '-append');
function crc = compute_crc(data)
crc_table = [ ...
hex2dec('00'),hex2dec('07'),hex2dec('0e'),hex2dec('09'),hex2dec('1c'),hex2dec('1b'),hex2dec('12'),hex2dec('15'),hex2dec('38'),hex2dec('3f'),hex2dec('36'),hex2dec('31'),hex2dec('24'),hex2dec('23'),hex2dec('2a'),hex2dec('2d'), ...
hex2dec('70'),hex2dec('77'),hex2dec('7e'),hex2dec('79'),hex2dec('6c'),hex2dec('6b'),hex2dec('62'),hex2dec('65'),hex2dec('48'),hex2dec('4f'),hex2dec('46'),hex2dec('41'),hex2dec('54'),hex2dec('53'),hex2dec('5a'),hex2dec('5d'), ...
hex2dec('e0'),hex2dec('e7'),hex2dec('ee'),hex2dec('e9'),hex2dec('fc'),hex2dec('fb'),hex2dec('f2'),hex2dec('f5'),hex2dec('d8'),hex2dec('df'),hex2dec('d6'),hex2dec('d1'),hex2dec('c4'),hex2dec('c3'),hex2dec('ca'),hex2dec('cd'), ...
hex2dec('90'),hex2dec('97'),hex2dec('9e'),hex2dec('99'),hex2dec('8c'),hex2dec('8b'),hex2dec('82'),hex2dec('85'),hex2dec('a8'),hex2dec('af'),hex2dec('a6'),hex2dec('a1'),hex2dec('b4'),hex2dec('b3'),hex2dec('ba'),hex2dec('bd'), ...
hex2dec('c7'),hex2dec('c0'),hex2dec('c9'),hex2dec('ce'),hex2dec('db'),hex2dec('dc'),hex2dec('d5'),hex2dec('d2'),hex2dec('ff'),hex2dec('f8'),hex2dec('f1'),hex2dec('f6'),hex2dec('e3'),hex2dec('e4'),hex2dec('ed'),hex2dec('ea'), ...
hex2dec('b7'),hex2dec('b0'),hex2dec('b9'),hex2dec('be'),hex2dec('ab'),hex2dec('ac'),hex2dec('a5'),hex2dec('a2'),hex2dec('8f'),hex2dec('88'),hex2dec('81'),hex2dec('86'),hex2dec('93'),hex2dec('94'),hex2dec('9d'),hex2dec('9a'), ...
hex2dec('27'),hex2dec('20'),hex2dec('29'),hex2dec('2e'),hex2dec('3b'),hex2dec('3c'),hex2dec('35'),hex2dec('32'),hex2dec('1f'),hex2dec('18'),hex2dec('11'),hex2dec('16'),hex2dec('03'),hex2dec('04'),hex2dec('0d'),hex2dec('0a'), ...
hex2dec('57'),hex2dec('50'),hex2dec('59'),hex2dec('5e'),hex2dec('4b'),hex2dec('4c'),hex2dec('45'),hex2dec('42'),hex2dec('6f'),hex2dec('68'),hex2dec('61'),hex2dec('66'),hex2dec('73'),hex2dec('74'),hex2dec('7d'),hex2dec('7a'), ...
hex2dec('89'),hex2dec('8e'),hex2dec('87'),hex2dec('80'),hex2dec('95'),hex2dec('92'),hex2dec('9b'),hex2dec('9c'),hex2dec('b1'),hex2dec('b6'),hex2dec('bf'),hex2dec('b8'),hex2dec('ad'),hex2dec('aa'),hex2dec('a3'),hex2dec('a4'), ...
hex2dec('f9'),hex2dec('fe'),hex2dec('f7'),hex2dec('f0'),hex2dec('e5'),hex2dec('e2'),hex2dec('eb'),hex2dec('ec'),hex2dec('c1'),hex2dec('c6'),hex2dec('cf'),hex2dec('c8'),hex2dec('dd'),hex2dec('da'),hex2dec('d3'),hex2dec('d4'), ...
hex2dec('69'),hex2dec('6e'),hex2dec('67'),hex2dec('60'),hex2dec('75'),hex2dec('72'),hex2dec('7b'),hex2dec('7c'),hex2dec('51'),hex2dec('56'),hex2dec('5f'),hex2dec('58'),hex2dec('4d'),hex2dec('4a'),hex2dec('43'),hex2dec('44'), ...
hex2dec('19'),hex2dec('1e'),hex2dec('17'),hex2dec('10'),hex2dec('05'),hex2dec('02'),hex2dec('0b'),hex2dec('0c'),hex2dec('21'),hex2dec('26'),hex2dec('2f'),hex2dec('28'),hex2dec('3d'),hex2dec('3a'),hex2dec('33'),hex2dec('34'), ...
hex2dec('4e'),hex2dec('49'),hex2dec('40'),hex2dec('47'),hex2dec('52'),hex2dec('55'),hex2dec('5c'),hex2dec('5b'),hex2dec('76'),hex2dec('71'),hex2dec('78'),hex2dec('7f'),hex2dec('6a'),hex2dec('6d'),hex2dec('64'),hex2dec('63'), ...
hex2dec('3e'),hex2dec('39'),hex2dec('30'),hex2dec('37'),hex2dec('22'),hex2dec('25'),hex2dec('2c'),hex2dec('2b'),hex2dec('06'),hex2dec('01'),hex2dec('08'),hex2dec('0f'),hex2dec('1a'),hex2dec('1d'),hex2dec('14'),hex2dec('13'), ...
hex2dec('ae'),hex2dec('a9'),hex2dec('a0'),hex2dec('a7'),hex2dec('b2'),hex2dec('b5'),hex2dec('bc'),hex2dec('bb'),hex2dec('96'),hex2dec('91'),hex2dec('98'),hex2dec('9f'),hex2dec('8a'),hex2dec('8d'),hex2dec('84'),hex2dec('83'), ...
hex2dec('de'),hex2dec('d9'),hex2dec('d0'),hex2dec('d7'),hex2dec('c2'),hex2dec('c5'),hex2dec('cc'),hex2dec('cb'),hex2dec('e6'),hex2dec('e1'),hex2dec('e8'),hex2dec('ef'),hex2dec('fa'),hex2dec('fd'),hex2dec('f4'),hex2dec('f3') ...
];
global crc_table;
crc = 0;
for i = 1:length(data)
crc = crc_table(1+bitxor(data(i),crc));