Papilio

• Papilio Reference page
• Xilinx constraints.ucf file.
• Papilio Pinouts
• XC3S500E datasheet

Hello World VHDL (Blinking LED):

entity LEDtest is
  port (
    clk: in bit;
    LED1: out bit;
    LED2: out bit
  );
end LEDtest;

architecture BEHAVIOUR of LEDtest is
  signal count: integer range 0 to 16777215;
  signal tmp:bit:='0';
begin
  IN_process: process (clk)
    begin
      if clk'event and clk = '1' then
        count<=count+1;
	if count=16777215 then
	  count<=0;
	  tmp<=not tmp;
	  LED1<=tmp;
	  LED2<=not tmp;
	end if;  
      end if;
    end process;
end BEHAVIOUR;

With the following constraints file:

# Crystal Clock - use 32MHz onboard oscillator
NET "clk" LOC = "P89" | IOSTANDARD = LVCMOS25 | PERIOD = 31.25ns ;

# Wing1 Column A
NET "LED1" LOC = "P91";	
NET "LED2" LOC = "P92";

Use xc3prog to send to FPGA:

#just once (erased on reboot):
sudo ./xc3sprog -c papilio ~/VHDL/LEDTest/LEDtest.bit  -v

#or use FTDI & FLASH to make non-volatile:
sudo ./xc3sprog -c papilio -I../bscan_spi/bscan_spi_xc3s500e_papilio.bit ~/VHDL/LEDTest/LEDtest.bit  -v -R

To compile xc3prog:

sudo aptitude install libftdi-dev libusb-1.0-0-dev
git clone git://github.com/GadgetFactory/Papilio-Loader.git
cd Papilio-Loader/xc3sprog/trunk
mkdir build
cd build
cmake ..
make
sudo ./xc3sprog -c papilio ~/VHDL/AWGprovo/mem2.bit -v

dmesg on inserting:

[48531.284590] usb 1-1.4: new full-speed USB device number 4 using ehci-pci
[48531.379349] usb 1-1.4: New USB device found, idVendor=0403, idProduct=6010
[48531.379359] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[48531.379365] usb 1-1.4: Product: Dual RS232
[48531.379369] usb 1-1.4: Manufacturer: FTDI
[48531.450715] usbcore: registered new interface driver usbserial
[48531.450731] usbcore: registered new interface driver usbserial_generic
[48531.450741] usbserial: USB Serial support registered for generic
[48531.475289] usbcore: registered new interface driver ftdi_sio
[48531.475397] usbserial: USB Serial support registered for FTDI USB Serial Device
[48531.475516] ftdi_sio 1-1.4:1.0: FTDI USB Serial Device converter detected
[48531.475578] usb 1-1.4: Detected FT2232C
[48531.475581] usb 1-1.4: Number of endpoints 2
[48531.475583] usb 1-1.4: Endpoint 1 MaxPacketSize 64
[48531.475585] usb 1-1.4: Endpoint 2 MaxPacketSize 64
[48531.475587] usb 1-1.4: Setting MaxPacketSize 64
[48531.477586] usb 1-1.4: FTDI USB Serial Device converter now attached to ttyUSB0
[48531.477611] ftdi_sio 1-1.4:1.1: FTDI USB Serial Device converter detected
[48531.477670] usb 1-1.4: Detected FT2232C
[48531.477672] usb 1-1.4: Number of endpoints 2
[48531.477675] usb 1-1.4: Endpoint 1 MaxPacketSize 64
[48531.477677] usb 1-1.4: Endpoint 2 MaxPacketSize 64
[48531.477679] usb 1-1.4: Setting MaxPacketSize 64
[48531.478467] usb 1-1.4: FTDI USB Serial Device converter now attached to ttyUSB1

About the clocks

• drawings with CLKFB
• Digital Clock Manager Features and Capabilities

Components

• FPGA markings: Xilinx \n Spartan \n XC3S500E ^TM \n VQ0100DGQ1213 \n D3236398A \n 4C
• 32MHz clock markings: CETECJ \n 32.000 \n @ <T> 116
• USB<->RS232 converter markings: FTDI \n FT2232D \n 207 -1
• FTDI crystal markings: <T> 6.0000
• Power Converter: AMS 1117 \n 1.2 HT1206
• Power Converter: AMS 1117 \n 2.5 HT 1218
• Power Converter: AMS 1117 \n 3.3 HT 226E
• Power Converter: AMS 1117 \n 5.0 HT ????
• 6-pin IC close to FTDI: 1TET
• 8-pin flash IC: ?

See Also

• FPGA
• FPGA Test Board