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Altera_Forum's avatar
Altera_Forum
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8 years ago

fpga startup problem

Good afternoon, members of the forum.

I have stratix V.

I have such a problem.

I write down the firmware in the epcq through the AS. The process is normal. In the firmware, I activate one of the LEDs on the board

Starting the card, nothing happens. Then he began to notice that the LED all the same blinks once during the start. In this case, if I change the firmware to another LED, the other LED will blink at the start. That is, the FPGA begins to be configured. And then nothing happens.

I checked the status pins with the voltmeter.

CONF_DONE = 0.1V (is low signal?)

nStatus smoothly changes 0.7V - 1.3V = low signal.

According to the documentation, this is similar to "Configuration Error Handling".

True today, I inserted a card in the pci-e, and my LEDs stopped blinking at the start, according to my firmware.

CONF_DONE = 0.1V (is low signal?)

nStatus = 0V

nCe = 0V

nConfig = 3V

Сontrol outputs on the board (just in case):

3.3V = 3.4V

3V = 3V

2.5V = 2.5V

VTT = 0.38V

VCCINT = 0.9V

VCCIO = 2.59V

Would I be happy with any advice, what kind of problem is this? Where to start searching.

Thank you in advance

ps.

Altera Stratix V 5sgxma7k2f40c2n

board Gidel ProceV

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  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    There is another problem, that the given LEDs blink the first time when turning on the power, it is necessary that after the flashing the board does not feed for 2-3 minutes (it can cool down)

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    --- Quote Start ---

    Hi,

    Are you trying to say, That you have programmed a code to blink single led on the board and you are see different result?

    1.Are you using development board / custom board?

    2. Check the pin assignments.

    or

    2.Write a simple code to control led via.

    --- Quote End ---

    Thanks for the answer.

    I'm trying to say that, probably, my chip does not start.

    I wrote a simple code that activates the LED. When power is applied, this LED blinks once and nothing happens. 

    
module main (output signal_1);
reg signal_1_r;
assign signal_1 = signal_1_r;
always 
begin
	signal_1_r <= 0;
end
endmodule

    I checked the status pins, and it seems to me that "configuration error".

    The other day I inserted a card in the pci-e connector and I even have the LED does not light at the start. I do not even know what to think. Yesterday I still checked the CRC_ERROR pin, but there is constantly 2.4 volts and I do not see anything else.

    --- Quote Start ---

    Hi,

    1.Are you using development board / custom board?

    --- Quote End ---

    development board Gidel proce V

    https://www.altera.com/solutions/partners/partner-profile/gidel--inc-/board/procev-gx--pcie-based-100g--ultra-low-latency-platform.html
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    Hi,

    Are you trying to say, That you have programmed a code to blink single led on the board and you are see different result?

    1.Are you using development board / custom board?

    2. Check the pin assignments.

    or

    2.Write a simple code to control led via.

    Best Regards,

    Anand Raj Shankar

    (This message was posted on behalf of Intel Corporation)