DIP Switch on FPGA

You could simply connect the dip switch between the GPIO and ground, and configure the GPIO to have a pull-up. Or add an external pull-up.

Are there buffers on the board? Connect the led, through an appropriate resistor, to the buffer output.

But, to be honest, your setup there is almost guaranteed to damage the FPGA. you really don’t want the pins of the FPGA connected to long wires flopping around like that.

J usually stood for Jumper years ago. That was when IDE-style connectors were the norm. Disk drives usually had a few pins at an edge for jumpers. These were small plastic black rectangular things that you pushed onto certain pins in order to designate characteristics of the drive. You removed them with tweezers or hook tool.

Also common was a flat ribbon cable which went on those pins fiting inside the long compartment containing the dual rows of pins. Either a single flat ribbon or twin flat ribbons. If you can discover an identical connector you can hook it up to your long dip-switch on the breadboard.
However you must make sure whether direct shorts are permitted. First further effort may be needed.

Can specify the exact evaluation board type and post a link to the schematic .pdf or attach the schematic here?

The most simple method is to enable internal weak pull-up in pin planner tool and use a switch to ground.

I see no specific risk of input damage as long you are operating the board on your desk only.

LEDs can be connected the same way as the internal LEDs are on the board, with an appropriate series resistor.

Looks similar to Alinx AX301.

barry said:

You could simply connect the dip switch between the GPIO and ground, and configure the GPIO to have a pull-up. Or add an external pull-up.

Are there buffers on the board? Connect the led, through an appropriate resistor, to the buffer output.

But, to be honest, your setup there is almost guaranteed to damage the FPGA. you really don’t want the pins of the FPGA connected to long wires flopping around like that.

Click to expand...

Thanks, Barry. But fortunately, I haven't powered the board yet as shown in the photo. I made the connections just to give you an idea of what I wanted to do.

FvM said:

Can specify the exact evaluation board type and post a link to the schematic .pdf or attach the schematic here?

The most simple method is to enable internal weak pull-up in pin planner tool and use a switch to ground.

I see no specific risk of input damage as long you are operating the board on your desk only.

LEDs can be connected the same way as the internal LEDs are on the board, with an appropriate series resistor.

Looks similar to Alinx AX301.

Click to expand...

Thanks for the tips, FvM. Attached is the schematic of the board.

Hi,

basically you connect the DIP switches the same way as the pushbuttons on page#7.

Klaus

Schematic is almost identical to Alinx AX301.

LED series resistor between 220R and 470R. DIP switches don't need external pull-up if you enable FPGA internal pull-up for respective pins, as already stated in post #4. No external VCC connection needed.