Comments for A.Quarter.To.Seven http://www.stefanocottafavi.com Mon, 09 Apr 2012 19:32:06 +0000 hourly 1 http://wordpress.org/?v=3.3.1 Comment on FAST BladedInterface by Massimiliano http://www.stefanocottafavi.com/?p=360#comment-731 Massimiliano Mon, 09 Apr 2012 19:32:06 +0000 http://www.stefanocottafavi.com/?p=360#comment-731 Hi Stefano, I came across this page while searching some information about the project I am working on: I would like to use the FAST in an Hardware-In the-Loop setup. At the moment the FAST S-Func is in the Simulink model while the controller is in the target (I use mostly xPC, but also the C2000 Texas Instrument DSP, and the Arduino). What I would like to do now is to have the FAST loaded in the xPC target and have the controller somewhere else (Simulink or DSP), but I am stuck at the compiling step because the FAST_SFunc.obj missing. I suspect that this problem has to do with the specific way the FAST_SFunc is built, you know that before every simulation I have to run the Read_Fast_Input.m file and it is someway linked with many other auxiliary files such as the wind and the baseline data ... Do you have any ideas on how I may solve the problem? Thanks in advance and keep up the good work! Massimiliano Hi Stefano,
I came across this page while searching some information about the project I am working on:
I would like to use the FAST in an Hardware-In the-Loop setup.
At the moment the FAST S-Func is in the Simulink model while the controller is in the target (I use mostly xPC, but also the C2000 Texas Instrument DSP, and the Arduino).
What I would like to do now is to have the FAST loaded in the xPC target and have the controller somewhere else (Simulink or DSP), but I am stuck at the compiling step because the FAST_SFunc.obj missing. I suspect that this problem has to do with the specific way the FAST_SFunc is built, you know that before every simulation I have to run the Read_Fast_Input.m file and it is someway linked with many other auxiliary files such as the wind and the baseline data …

Do you have any ideas on how I may solve the problem?

Thanks in advance and keep up the good work!

Massimiliano

]]> Comment on LabVIEW + Arduino, Reading float variables by Stormie http://www.stefanocottafavi.com/?p=412#comment-726 Stormie Tue, 03 Apr 2012 10:14:55 +0000 http://www.stefanocottafavi.com/?p=412#comment-726 Hi, I'm fairly new to programming with labview, how would I go about it so I could reverse the process and send a variable from LV to the arduino at the same time? Hi,

I’m fairly new to programming with labview, how would I go about it so I could reverse the process and send a variable from LV to the arduino at the same time?

]]> Comment on LabVIEW + Arduino, Reading float variables by Adam___B http://www.stefanocottafavi.com/?p=412#comment-716 Adam___B Sat, 03 Mar 2012 19:50:57 +0000 http://www.stefanocottafavi.com/?p=412#comment-716 Hello Stefano! It works indeed :) I can now send one variable form Arduino to Labview without any lag. You said that the code can may be modified to send multiple data (variables) at the same time. How can it be done? Is it about adding cases in Labview with different headers and respectively serial.write commands with their names and variable names in Arduino code? Cheers, Adam Hello Stefano!

It works indeed :) I can now send one variable form Arduino to Labview without any lag.

You said that the code can may be modified to send multiple data (variables) at the same time. How can it be done? Is it about adding cases in Labview with different headers and respectively serial.write commands with their names and variable names in Arduino code?

Cheers,
Adam

]]> Comment on BMP085 Pressure Sensor by Krillin http://www.stefanocottafavi.com/?p=447#comment-715 Krillin Tue, 07 Feb 2012 08:30:52 +0000 http://www.stefanocottafavi.com/?p=447#comment-715 Looks good. I was looking for a example how to read the BMP085 through Labview. Can you release the sample code pls. Also what i'm missing is how to readout the temperature from the BMP085. Or can you give me directions in how to do that. Thank you Looks good.

I was looking for a example how to read the BMP085 through Labview. Can you release the sample code pls. Also what i’m missing is how to readout the temperature from the BMP085. Or can you give me directions in how to do that.

Thank you

]]> Comment on LabVIEW + Arduino, Reading float variables by Stefano http://www.stefanocottafavi.com/?p=412#comment-584 Stefano Fri, 06 Jan 2012 21:52:35 +0000 http://www.stefanocottafavi.com/?p=412#comment-584 Hi Nilo, you can find the sketches zipped in the downloads available at the top of the page. Please note that no major changes has been done to the LIFA code, only the “Serial.write” in the main loop have been added for these examples to work. Any further suggestion will be appreciated. Cheers, Ste Hi Nilo, you can find the sketches zipped in the downloads available at the top of the page. Please note that no major changes has been done to the LIFA code, only the “Serial.write” in the main loop have been added for these examples to work. Any further suggestion will be appreciated.
Cheers,
Ste

]]> Comment on LabVIEW + Arduino, Reading float variables by Stefano http://www.stefanocottafavi.com/?p=412#comment-583 Stefano Fri, 06 Jan 2012 21:51:18 +0000 http://www.stefanocottafavi.com/?p=412#comment-583 Hi Adam, first thing to pay attention to is how many bytes we send and receive (you can read previous statement as "LIFA need to know how many bytes has to wait for!" ). We have two way to send data from Arduino: 1) Serial.print(ln) or 2) Serial.write the second one being more low level than the first one. With 1) data will be sent as human-readable ASCII text (and as per the following links with sort of default truncation) while with 2) the data are sent as bytes. For example to send following Arduino float numbers : 1.23 1.23456 -12.34 Serial.Print "1.23" (4bytes) "1.23" "-12.34"(6bytes) Serial.Println "1.23\r\n" (6bytes) "1.23\r\n"() "-12.34\r\n"(8bytes) Serial.Write 1.23 (4bytes) 1.23456(4bytes) -12.34(4bytes) The only function that guarantee a constant number of bytes, 4 in case of single precision float, is "write" and for me this is the way to go! The LIFA_test_2 show exactly how to send one float (4bytes) over the serial line + a simple header (1byte) : total 5 bytes, always!!! Of course that example can be modified to send multiple data / different types at the same time... http://www.arduino.cc/en/Serial/Print http://www.arduino.cc/en/Serial/Println http://www.arduino.cc/en/Serial/Write Hi Adam,
first thing to pay attention to is how many bytes we send and receive (you can read previous statement as “LIFA need to know how many bytes has to wait for!” ). We have two way to send data from Arduino: 1) Serial.print(ln) or 2) Serial.write the second one being more low level than the first one.

With 1) data will be sent as human-readable ASCII text (and as per the following links with sort of default truncation) while with 2) the data are sent as bytes.
For example to send following Arduino float numbers :
1.23 1.23456 -12.34
Serial.Print “1.23″ (4bytes) “1.23″ “-12.34″(6bytes)
Serial.Println “1.23\r\n” (6bytes) “1.23\r\n”() “-12.34\r\n”(8bytes)
Serial.Write 1.23 (4bytes) 1.23456(4bytes) -12.34(4bytes)

The only function that guarantee a constant number of bytes, 4 in case of single precision float, is “write” and for me this is the way to go!

The LIFA_test_2 show exactly how to send one float (4bytes) over the serial line + a simple header (1byte) : total 5 bytes, always!!!

Of course that example can be modified to send multiple data / different types at the same time…

http://www.arduino.cc/en/Serial/Print
http://www.arduino.cc/en/Serial/Println
http://www.arduino.cc/en/Serial/Write

]]> Comment on LabVIEW + Arduino, Reading float variables by Adam___B http://www.stefanocottafavi.com/?p=412#comment-582 Adam___B Thu, 05 Jan 2012 14:00:34 +0000 http://www.stefanocottafavi.com/?p=412#comment-582 Hello. I managed to get your VI to work with my program. I'm sending my variable (data from one axis of my accelerometer) as a string via serial.println. It only works with your second VI (LIFA_test_2), when I convert buffer data straight from Send Receive block to number and then plot it. Otherwise I get 0 all the time. Thing is, when it plots as I said before, it is very fluent with values from -200 to -1 and 10 to 200 (integers only), but for values 0 to 9 it gets significantly slower. What would you recommend to look at in order to improve it? I set "Bytes to read" to 4 (best results so far). I uploaded my VI in case you wanted to look at it Would very much appreciate an advice, cheers! The file: http://www.sendspace.com/file/sbarfo Hello.

I managed to get your VI to work with my program. I’m sending my variable (data from one axis of my accelerometer) as a string via serial.println. It only works with your second VI (LIFA_test_2), when I convert buffer data straight from Send Receive block to number and then plot it. Otherwise I get 0 all the time. Thing is, when it plots as I said before, it is very fluent with values from -200 to -1 and 10 to 200 (integers only), but for values 0 to 9 it gets significantly slower. What would you recommend to look at in order to improve it? I set “Bytes to read” to 4 (best results so far).

I uploaded my VI in case you wanted to look at it

Would very much appreciate an advice, cheers!

The file:

http://www.sendspace.com/file/sbarfo

]]> Comment on LabVIEW + Arduino, Reading float variables by Nilo http://www.stefanocottafavi.com/?p=412#comment-574 Nilo Tue, 03 Jan 2012 07:47:06 +0000 http://www.stefanocottafavi.com/?p=412#comment-574 Hi Stefano: Please how did you modified the arduino LIFA sketch to send MCU memory variable to LABVIEW. Please show us an example. Hi Stefano: Please how did you modified the arduino LIFA sketch to send MCU memory variable to LABVIEW. Please show us an example.

]]> Comment on Onyx-VJ by coutable http://www.stefanocottafavi.com/?page_id=100#comment-561 coutable Sat, 15 Oct 2011 12:53:51 +0000 http://www.stefanocottafavi.com/?page_id=100#comment-561 Hello, where can i dowload the onyx-vj software ? Hello,
where can i dowload the onyx-vj software ?

]]> Comment on JavaSWF9 – Java for SWF library by Torres - Web Marketing http://www.stefanocottafavi.com/?p=50#comment-526 Torres - Web Marketing Mon, 01 Aug 2011 02:25:05 +0000 http://www.stefanocottafavi.com/?p=50#comment-526 They might provide the library in due time. We should probably wait. Was waiting for it too since I'm interested with the library. They might provide the library in due time. We should probably wait. Was waiting for it too since I’m interested with the library.

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