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Found 4 results

  1. I recently purchased this bundle from gadget factory. http://store.gadgetfactory.net/retrocade-megawing-bundle/ I am new to FPGAs but I have coded with Arduinos before. I understand that FPGAs are alot more useful since then can do operations in parallel as opposed to sequences (arduinos; which is why i purchased it). How can I use the ADC of the megawing? Ideally I have two analog inputs, which sample at the same frequency (250hz). I would then like to output this on a graph (maybe serial port on the computer? or a TFT screen?) Can some one show me to the right direction? Thanks.
  2. Hello, I wrote a simple script in Matlab that will use the serial com port to create a plot (16 bit plot). Currently works with offroad's bitfile. Since I can't upload the file, I will place the code here: portnum = input('What COM port is it (i.e. COM4 type 4)?') %Asks a numberrate=input('What Baudrate is it? (Default is 9600 (type 1))')if sum(rate) rate=9600endTimePeriod=input('What time period? (Default 400)')portstr=num2str(portnum)port=['COM',portstr]hold off;s1=serial(port,'Baudrate',rate); %puts parameters on serial portfopen(s1); %opens the serial portarray=fscanf(s1,'%c'); %starts listening. instantous readings pin0=[1:TimePeriod]; %Initliaze vectors for each ADC pinpin1=[1:TimePeriod];pin2=[1:TimePeriod];pin3=[1:TimePeriod];pin4=[1:TimePeriod];pin5=[1:TimePeriod];pin6=[1:TimePeriod];pin7=[1:TimePeriod];pin8=[1:TimePeriod];pin9=[1:TimePeriod];pin10=[1:TimePeriod];pin11=[1:TimePeriod];pin12=[1:TimePeriod];pin13=[1:TimePeriod];pin14=[1:TimePeriod];pin15=[1:TimePeriod];i=1;while i<TimePeriod array=fscanf(s1,'%c'); %Outputs a character line of the Hex values from the two ADCs Hexpin0=array([1:2]); %Hex values from first input Hexpin1=array([4:5]); Hexpin2=array([7:8]); Hexpin3=array([10:11]); Hexpin4=array([13:14]); Hexpin5=array([17:18]); Hexpin6=array([20:21]); Hexpin7=array([23:24]); Hexpin8=array([26:27]); Hexpin9=array([29:30]); Hexpin10=array([32:33]); Hexpin11=array([35:36]); Hexpin12=array([38:39]); Hexpin13=array([41:42]); Hexpin14=array([44:45]); Hexpin15=array([46:47]); Intpin0=hex2dec(Hexpin0); %Converted the Hex values to Integers Intpin1=hex2dec(Hexpin1); Intpin2=hex2dec(Hexpin2); Intpin3=hex2dec(Hexpin3); Intpin4=hex2dec(Hexpin4); Intpin5=hex2dec(Hexpin5); Intpin6=hex2dec(Hexpin6); Intpin7=hex2dec(Hexpin7); Intpin8=hex2dec(Hexpin8); Intpin9=hex2dec(Hexpin9); Intpin10=hex2dec(Hexpin10); Intpin11=hex2dec(Hexpin11); Intpin12=hex2dec(Hexpin12); Intpin13=hex2dec(Hexpin13); Intpin14=hex2dec(Hexpin14); Intpin15=hex2dec(Hexpin15); pin0(i)=Intpin0; %Vector of intgers from ADC's first input pin1(i)=Intpin1; pin2(i)=Intpin2; pin3(i)=Intpin3; pin4(i)=Intpin4; pin5(i)=Intpin5; pin6(i)=Intpin6; pin7(i)=Intpin7; pin8(i)=Intpin8; pin9(i)=Intpin9; pin10(i)=Intpin10; pin11(i)=Intpin11; pin12(i)=Intpin12; pin13(i)=Intpin13; pin14(i)=Intpin14; pin15(i)=Intpin15; i=i+1;end x=[1:TimePeriod]; plot(x,pin0,'y'); %Plot the first analog input hold on plot(x,pin1,'m') plot(x,pin2,'c') plot(x,pin3,'r') plot(x,pin4,'g') plot(x,pin5,'b') plot(x,pin6,'w') plot(x,pin7,'k') plot(x,pin8,'y-*') plot(x,pin9,'m-*') plot(x,pin10,'c-*') plot(x,pin11,'r-*') plot(x,pin12,'g-*') plot(x,pin13,'b-*') plot(x,pin14,'w-*') plot(x,pin15,'k-*') fclose(s1);
  3. I'm new to FPGA's and wanted to take the simple approach, so I bought a Papilio 250 and a MegaWing and got a copy of Mike Field's book "Introducing the Spartan 3E and VHDL". I tried the "First Project" in his book and can't get it to work. The even numbered LEDs light, but nothing ever changes state when any/all of the slide switches are toggled. I'm assuming that's what's supposed to happen. I've rebuilt the project three times from scratch thinking that I might have entered something wrong. I get the displays shown in Mike's book. The *.bit files are 166K as shown in Mike's book. Double clicking on the .bit file produces the following response from the loader - Programming the FPGA - Default JTAG chainpos: 0 Device IDCODE = 0x11c1a093 Desc: XC3S250E Uploading "C:\downloads\Switches_LEDs.bit". Done. Programming time 327.0 ms USB transactions: Write 86 read 2 retries 0 I'm using Win7-32 Pro with SP1. I'm also using ISE Design Suite 14.1 rather than version 13 that Mike referenced. Any thoughts on where to proceed? TIA, Bruce
  4. Version 1.2c

    2,475 downloads

    Generic UCF for the LogicStart MegaWing targeting the Papilio One