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clear all
close all
%%%%%%%%%%%%%%%%%%%%%%%
% SYSTEM VECTOR
%
% All measurements in NED frame
%
% uint64_t timestamp;
% float gyro[3]; in rad/s
% float accel[3]; in m/s^2
% float mag[3]; in Gauss
% float baro; pressure in millibar
% float baro_alt; altitude above MSL in meters
% float baro_temp; in degrees celcius
% float control[4]; roll, pitch, yaw [-1..1], thrust [0..1]
% float actuators[8]; motor 1-8, in motor units (PWM: 1000-2000,
% AR.Drone: 0-512
% float vbat; battery voltage in volt
% float adc[3]; remaining auxiliary ADC ports in volt
% float local_position
% int32 gps_raw_position
if exist('sysvector.bin', 'file')
% Read actuators file
myFile = java.io.File('sysvector.bin')
fileSize = length(myFile)
fid = fopen('sysvector.bin', 'r');
elements = int64(fileSize./(8+(3+3+3+1+1+1+4+8+4+3+3)*4));
for i=1:elements
% timestamp
sysvector(i,1) = double(fread(fid, 1, '*uint64', 0, 'ieee-le.l64'));
% actuators 1-16
% quadrotor: motor 1-4 on the first four positions
sysvector(i, 2:32) = fread(fid, 28+3, 'float', 'ieee-le');
sysvector(i,33:35) = fread(fid, 3, 'int32', 'ieee-le');
end
sysvector_interval_seconds = (sysvector(end,1) - sysvector(1:1)) / 1000000
sysvector_minutes = sysvector_interval_seconds / 60
% Normalize time
sysvector(:,1) = (sysvector(:,1) - sysvector(1,1)) / 1000000;
% Create some basic plots
% Remove zero rows from GPS
gps = sysvector(:,33:35);
gps(~any(gps,2), :) = [];
all_data = figure('Name', 'GPS RAW');
gps_position = plot3(gps(:,1), gps(:,2), gps(:,3));
all_data = figure('Name', 'Complete Log Data (exc. GPS)');
plot(sysvector(:,1), sysvector(:,2:32));
actuator_inputs = figure('Name', 'Attitude controller outputs');
plot(sysvector(:,1), sysvector(:,14:17));
legend('roll motor setpoint', 'pitch motor setpoint', 'yaw motor setpoint', 'throttle motor setpoint');
actuator_outputs = figure('Name', 'Actuator outputs');
plot(sysvector(:,1), sysvector(:,18:25));
legend('actuator 0', 'actuator 1', 'actuator 2', 'actuator 3', 'actuator 4', 'actuator 5', 'actuator 6', 'actuator 7');
end
if exist('actuator_outputs0.bin', 'file')
% Read actuators file
myFile = java.io.File('actuator_outputs0.bin')
fileSize = length(myFile)
fid = fopen('actuator_outputs0.bin', 'r');
elements = int64(fileSize./(16*4+8))
for i=1:elements
% timestamp
actuators(i,1) = double(fread(fid, 1, '*uint64', 0, 'ieee-le.l64'));
% actuators 1-16
% quadrotor: motor 1-4 on the first four positions
actuators(i, 2:17) = fread(fid, 16, 'float', 'ieee-le');
end
end
if exist('actuator_controls0.bin', 'file')
% Read actuators file
myFile = java.io.File('actuator_controls0.bin')
fileSize = length(myFile)
fid = fopen('actuator_controls0.bin', 'r');
elements = int64(fileSize./(8*4+8))
for i=1:elements
% timestamp
actuator_controls(i,1) = fread(fid, 1, 'uint64', 0, 'ieee-le.l64');
% actuators 1-16
% quadrotor: motor 1-4 on the first four positions
actuator_controls(i, 2:9) = fread(fid, 8, 'float', 'ieee-le');
end
end
if exist('sensor_combined.bin', 'file')
% Read sensor combined file
% Type definition: Firmware/apps/uORB/topics/sensor_combined.h
% Struct: sensor_combined_s
fileInfo = dir('sensor_combined.bin');
fileSize = fileInfo.bytes;
fid = fopen('sensor_combined.bin', 'r');
for i=1:elements
% timestamp
sensors(i,1) = double(fread(fid, 1, '*uint64', 0, 'ieee-le.l64'));
% gyro raw
sensors(i,2:4) = fread(fid, 3, 'int16', 0, 'ieee-le');
% gyro counter
sensors(i,5) = fread(fid, 1, 'uint16', 0, 'ieee-le');
% gyro in rad/s
sensors(i,6:8) = fread(fid, 3, 'float', 0, 'ieee-le');
% accelerometer raw
sensors(i,9:11) = fread(fid, 3, 'int16', 0, 'ieee-le');
% padding bytes
fread(fid, 1, 'int16', 0, 'ieee-le');
% accelerometer counter
sensors(i,12) = fread(fid, 1, 'uint32', 0, 'ieee-le');
% accel in m/s2
sensors(i,13:15) = fread(fid, 3, 'float', 0, 'ieee-le');
% accel mode
sensors(i,16) = fread(fid, 1, 'int32', 0, 'ieee-le');
% accel range
sensors(i,17) = fread(fid, 1, 'float', 0, 'ieee-le');
% mag raw
sensors(i,18:20) = fread(fid, 3, 'int16', 0, 'ieee-le');
% padding bytes
fread(fid, 1, 'int16', 0, 'ieee-le');
% mag in Gauss
sensors(i,21:23) = fread(fid, 3, 'float', 0, 'ieee-le');
% mag mode
sensors(i,24) = fread(fid, 1, 'int32', 0, 'ieee-le');
% mag range
sensors(i,25) = fread(fid, 1, 'float', 0, 'ieee-le');
% mag cuttoff freq
sensors(i,26) = fread(fid, 1, 'float', 0, 'ieee-le');
% mag counter
sensors(i,27) = fread(fid, 1, 'int32', 0, 'ieee-le');
% baro pressure millibar
% baro alt meter
% baro temp celcius
% battery voltage
% adc voltage (3 channels)
sensors(i,28:34) = fread(fid, 7, 'float', 0, 'ieee-le');
% baro counter and battery counter
sensors(i,35:36) = fread(fid, 2, 'uint32', 0, 'ieee-le');
% battery voltage valid flag
sensors(i,37) = fread(fid, 1, 'uint32', 0, 'ieee-le');
end
end
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