Labjack U3-HV with matlab for LED blinking continously
3 次查看(过去 30 天)
显示 更早的评论
Hi,
Could you please tell me the very first few lines of code that I would need to write in MATLAB, in order to connect to labjack U3-HV, through USB cable.
I have tried downloading your MATLAB library and following some instructions that you have on your website, but I was not successful at all in even performing a handshake with a device. Can i have the coding for analog input in LED blinking continously using the labjack U3-HV as hardware tools?
Thank You!
0 个评论
回答(1 个)
Sivapriya Srinivasan
2023-10-7
Hello,
I understand that to connect to a LabJack U3-HV device and perform an analog input operation, you can use the following MATLAB code as a starting point:
% Load the LabJack library
ljud_LoadDriver; % Make sure the LabJack driver is loaded
% Open the LabJack U3-HV device
[ljhandle, ljerror] = ljud_OpenLabJack(ljdtU3, LJSocketType.USB, '1', 1);
% Check for errors in opening the device
if ljerror ~= 0
error(['Error opening LabJack U3-HV: ', num2str(ljerror)]);
end
% Configure the analog input channel
channel = 0; % Analog input channel number
range = LJ_rgBIP10V; % Analog input range (-10V to +10V)
resolution = 0; % Default resolution
settlingTime = 0; % Default settling time
ljud_AddRequest(ljhandle, LJ_ioPUT_CONFIG, LJ_chAIN_RESOLUTION, resolution, 0, 0);
ljud_AddRequest(ljhandle, LJ_ioPUT_AIN_RANGE, channel, range, 0, 0);
ljud_AddRequest(ljhandle, LJ_ioPUT_CONFIG, LJ_chAIN settlingTime, 0, 0, 0);
% Start continuous LED blinking
while true
% Read analog input value
ljud_eGet(ljhandle, LJ_ioGET_AIN, channel, 0, 0, 0);
[ljerror, voltage] = ljud_GetResult(ljhandle, LJ_ioGET_AIN, channel, 0);
% Check for errors in reading the analog input
if ljerror ~= 0
error(['Error reading analog input: ', num2str(ljerror)]);
end
% Perform some operation based on the analog input value
% For example, if voltage is above a threshold, blink an LED
if voltage > threshold
% Blink LED
% Write your code here to control the LED using your hardware setup
end
end
% Close the LabJack U3-HV device
ljud_Close(ljhandle);
Make sure you have downloaded and installed the LabJack MATLAB library from the official LabJack website (https://labjack.com/support/software/examples/ud/matlab) before running this code. Additionally, you may need to modify the code to match your specific hardware setup and requirements.
Please note that this code only provides a basic framework for analog input and LED control using the LabJack U3-HV device. You will need to adapt it according to your specific needs and hardware configuration.
Hope this helps!
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Heat and Mass Transfer 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!