DONE signals in FPGA loading should be after the completion of high level, but on the board to work after a period of time (the board) after the temperature of the heat and electricity will be DONE on the signal again has been as low level, the FPGA didn't finish loader, cause systems don't work properly, every time is this kind of phenomenon is not electricity, when power up after a period of time will have, don't know if it has something to do with the temperature, or where the configuration is wrong? (k7 using XILINX FPGA series, flash is s25fl132k, DONE is to use the pull up resistance of 330 ohms,), ask for help! Thank you so much.

CodePudding user response:

I also met the same problem

CodePudding user response:

reference 1st floor qq_25199289 response:

I met the same problem also

how did two boards, a piece of work is normal, another piece have this problem, first the kernel 1 v on the electric voltage, then the 3.3 v, then the init_b signals, the timing is correct, then is the CLK, finally done not up, the fpga can't start,

CodePudding user response:

Problem, take the FPGA work clock, see if there is something wrong, you're running a period of time after the temperature rise will have this problem, it is possible that the FPGA clock crystals of high temperature is not stable, then the amount of flash interface signals, look at the FPGA whether to have a visit to flash, hope to help you

CodePudding user response:

reference weixin_42671514 reply: 3/f

problems, measure the work of the FPGA clock, see if there is something wrong, you're running a period of time after the temperature rise will have this problem, it is possible that the FPGA clock crystals under high temperature is not stable, then the amount of flash interface signals, look at the FPGA whether to have a visit to flash, hope to help you

thank you for your guidance

CodePudding user response:

Hello, the problem is that the fpga on electricity for a period of time, work, and then power for 1 minute, then power on the done signal not up, the fpga loading failure, so the fpga is not running, then should also has nothing to do with crystals,

CodePudding user response:

You can try to trigger the ncofig, look to whether can load successfully

CodePudding user response:

refer to 6th floor weixin_42671514 response:

do you think you could try to trigger ncofig, look to whether can load success

thank you very much, I'll give it a try

CodePudding user response:

This is heavy??