How To Glow Leds On FPGA by modifying Linux source code

[karthik gunda]

Hi All,

I am working on OR1200 Processor and I have generated a bitfile Using XILINX ISE 13.2 for the ORPSOC consisting the OR1200 Processor. I have also Ported Linux on the processor through FPGA. But my requirement is after Linux is up i want to run a C prorgram so that the LEDs on the FPGA GLOW.

Please help me in doing this JOB.


Thanks
Karthik Gunda.

 

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Your question is way too vague. You're unlikely to get any help without narrowing down to specific problems you are having.

 

[karthik gunda]

Hi,
Actually when I saw the linux source code I found directory drivers/leds in that there are many c programs related to leds, so my question is how can I use those modules and glow the leds present on my FPGA(virtex5). I hope the question is clear.

Thanks,
Karthik.

 

[kaiserschmarren87]

What is the Logic in your VHDL code to control the LEDs ?
I hope that you have assigned LED pins in UCF.
What is the architecture or flow of your logic in simple ?

 

[karthik gunda]

What is the Logic in your VHDL code to control the LEDs ?
I hope that you have assigned LED pins in UCF.
What is the architecture or flow of your logic in simple ?

Hi,

Actually my design is an opencores ORPSOC which contains a Or1200 processor and one of its slaves is GPIO module which is given a address space of "0x91000000" and the code flow for that module is as below


always @(posedge wb_clk)
if (wb_rst)
gpio_o <= 0; // All set to in at reset
else if (wb_stb_i & wb_we_i)
begin
if (wb_adr_i == 0)
gpio_o[7:0] <= wb_dat_i;


I have assigned the 8 leds on my FPGA to gpio_o[1], gpio_o[1], .... correspondingly.

Hope I am clear.

Thanks,
Karthik