I have a compliance board for SFP+ transceivers. For CFP2 transceivers there is some integrated PRBS pattern generator, but I can't find something similar for SFP+ transceivers.
Is this even possible using the compliance board alone or do I need an AWG?
You can send anything you want from an SFP+ module - it doesn't care what you feed it.
You need to turn on the laser and then feed a differential signal to pins 18 and 19. Check SFF-8418 for details.
Related
I would like to read a block of data from my Arduino Mega (and also from an Arduino Micro in another project) with my Raspberry Pi via I2C. The code has to be in Perl because it's sort of a plug-in for my Home-Automation-Server.
I'm using the Device::SMBus interface and the connection works, I'm able to write and read single Bytes. I can even use writeBlockData with register address 0x00. I randomly discovererd that this address works.
But when I want to readBlockData, no register-address seems to work.
Does anyone know the correct register-address, or is that not even the problem that causes errors?
Thanks in advance
First off, which register(s) are you wanting to read? Here's an example using my RPi::I2C software (it should be exceptionally similar with the distribution you're using), along with a sketch that has a bunch of pseudo-registers configured for reading/writing.
First, the Perl code. It reads two bytes (the output of an analogRead() of pin A0 which is set up as register 80), then bit-shifts the two bytes into a 16-bit integer to get the full 0-1023 value of the pin:
use warnings;
use strict;
use RPi::I2C;
my $arduino_addr = 0x04;
my $arduino = RPi::I2C->new($arduino_addr);
my #bytes = $arduino->read_block(2, 80);
my $a0_value = ($bytes[0] << 8) | $bytes[1];
print "$a0_value\n";
Here's a full-blown Arduino sketch you can review that sets up a half dozen or so pseudo-registers, and when each register is specified, the Arduino writes or reads the appropriate data. If no register is specified, it operates on 0x00 register.
The I2C on the Arduino always does an onReceive() call before it does the onRequest() (when using Wire), so I set up a global variable reg to hold the register value, which I populate in the onReceive() interrupt, which is then used in the onRequest() call to send you the data at the pseudo-register you've specified.
The sketch itself doesn't really do anything useful, I just presented it as an example. It's actually part of my automated unit test platform for my RPi::WiringPi distribution.
I have Wago 750-880 with different sensors. Someone wrote already a program to control it in Codesys. I would like to return (I have a Java background :D) - to write some variables to output in the driver, e.g. holding registers. I would like to to read later those variables (parameters) on a SSI page like that
<!--#READPI ADR=QX4.5&FORMAT=%X-->
I don't have any PLC experience :(
How can I write to the Holding Register?
Thanks a lot in advance
My interpretation of the question is that you'd like the information to be reflected on a web interface or screen?
If so, in Wago's environment there is a VISU facility that you can enable to display whatever you'd like, and access it via a web browser over the internet.
This may help: Supplement to the User Manual for PLC Programming with CoDeSys 2.3
create variables for your I/O and using the Modbus library to access your %MW??? variables.
First %MW0 is at address 12288 and so on
ex: Input1 AT %MW10 ; //12288 + 10 = 12298
//MAP TO ACTUAL IP1 unit channel 1
Input1.0 = IP1.0
I currently am using Max/MSP to create an interactive system between lights and sound.
I am using Philips hue lighting which I have hooked up to Max/MSP and now I am wanting to trigger an increase in brightness/saturation on the input of a note from a Midi instrument. Does anyone have any ideas how this might be accomplished?
I have built this.
I used the shell object. And then feed an array of parameters into it via a javascipt file with the HUE API. There is a lag time of 1/6 of a second between commands.
Javascript file:
inlets=1;
outlets=1;
var bridge="192.168.0.100";
var hash="newdeveloper";
var bulb= 1;
var brt= 200;
var satn= 250;
var hcolor= 10000;
var bulb=1;
function list(bulb,hcolor,brt,satn,tran) {
execute('PUT','http://'+bridge+'/api/'+hash+'/lights/'+bulb+'/state', '"{\\\"on\\\":true,\\\"hue\\\":'+hcolor+', \\\"bri\\\":'+brt+',\\\"sat\\\":'+satn+',\\\"transitiontime\\\":'+tran+'}"');
}
function execute($method,$url,$message){
outlet(0,"curl --request",$method,"--data",$message,$url);
}
To control Philips Hue you need to issue calls to a restful http based api, like so: http://www.developers.meethue.com/documentation/core-concepts, using the [jweb] or [maxweb] objects: https://cycling74.com/forums/topic/making-rest-call-from-max-6-and-saving-the-return/
Generally however, to control lights you use DMX, the standard protocol for professional lighting control. Here is a somewhat lengthy post on the topic: https://cycling74.com/forums/topic/controlling-video-and-lighting-with-max/, scroll down to my post from APRIL 11, 2014 | 3:42 AM.
To change the bri/sat of your lights is explained in the following link (Registration/Login required)
http://www.developers.meethue.com/documentation/lights-api#16_set_light_state
You will need to know the IP Address of your hue hue bridge which is explained here: http://www.developers.meethue.com/documentation/getting-started and a valid username.
Also bear in mind the performance limitations. As a general rule you can send up to 10 lightstate commands per second. I would recommend having a 100ms gap between each one, to prevent flooding the bridge (and losing commands).
Are you interested in finding out details of who to map this data from a MIDI input to the phillips HUE lights within max? or are you already familiar with Max.
Using Tommy b's javascript (which you could put into a js object), You could for example scale the MIDI messages you want to use using midiin and borax objects and map them to the outputs you want using the scale object. Karlheinz Essl's RTC library is a good place to start with algorithmic composition if you want to transform the data at all http://www.essl.at/software.html
+1 for DMX light control via Max. There are lots of good max-to-dmx tutorials and USB-DMX hardware is getting pretty cheap. However, as someone who previously believed in dragging a bunch of computer equipment on stage just to control a light or two with an instrument, I'd recommend researching and purchasing a simple one channel "color organ" circuit kit (e.g., Velleman MK 110). Controlling a 120/240V light bulb via audio is easier than you might think; a computer for this type of application is usually overkill. Keep it simple and good luck!
What is the Difference between BGAPI and BGScript ?
And if we write any code for BG profile than how can we burn it in BLE 112?
The BGAPI interface defines the protocol used to talk to the module over USB or serial link.
BGScript is something which runs on the module processor itself, when the USB or serial link is not used.
I have the dongle, BLED112, which is the same thing as BLE112 with a USB connector on it, and the code is "burned" to it using standard USB DFU interface.
The downloading of the code to BLE112 can be done using several methods:
(1) Bring out the DD, DC debug interface pins from your module and use the CC-Debugger (digikey part 296-30207-ND, $55). This works every time. If you have the DKBLE112 kit, the CC-Debugger fits on the 10-pin .050 connector in lower right corner. You can "burn" any firmware and any stack this way. Works awesome.
(2) Hope that the current firmware on the CC2540 has serial bootloader, and load the new firmware (hopefully also containing serial bootloader) using UART. TI has the tools, but it sure seems quite convoluted to me, and I did not try it.
I recorded my voice in Matlab. Now i want to convert that audio in to strings i-e; written sentences in Matlab. Is there a way to convert audio in to text.
I'm pretty sure MATLAB does not have native speech-to-text functionality.
A quick Google search turned up at least one project integrating speech-to-text into MATLAB.
http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html
Some other software that can translate recorded speech into text are Microsoft's SAPI (built into Windows Vista and Windows 7, and available as a download for Windows XP), and CMU's Sphinx project. Nuance Dragon Naturally Speaking is an option, but it is comparatively expensive. It's not obvious to me how these could be integrated into MATLAB though.
You can achieve somewhat limit mileage using the Builtin Windows Speech API. It depends on your operating system etc. and you need to follow similar principles from the API documentation:
http://msdn.microsoft.com/en-us/library/ms723627(v=vs.85).aspx
Using MATLAB's activeX server (
http://www.mathworks.co.uk/help/matlab/ref/actxserver.html)
You need the first declare a speech recogniser engine
RC = actxserver('SAPI.SpSharedRecoContext'); %connect to speech engine
And then setup various call back functions for each state of the recogniser:
RC.registerevent({'Recognition' #CallbackFunction; 'Hypothesis' #CallbackFunction; 'FalseRecognition' #CallbackFunction})
The contents of the callback function should be along these lines:
function word = CallbackFunction(varargin)
global word
result = varargin{length(varargin)-2};
word = result.Phraseinfo.GetText;
end
Then finally switch the recogniser on:
RC.Recognizer.State = 'SRSActive';
You would need to reference the documentation for which callback functions are called and when.
You will need to also setup a grammar dictionary to get meaningful results. As the engine will be attempting to recognise any word otherwise.