Nexys™4 Artix-7 FPGA "Fail 2"

[Lex21]

I bought a Nexys™4 Artix-7 FPGA a while ago and I turned it on today. I was waiting for the user demo that comes pre-installed to say PASS but instead this time is says "Fail 2" "see doc". what does this mean? I cant find this anywhere in the document at all.

 

 

Thanks alex

[jpeyron]

Hello Lex21,

 I was able to duplicate the error on a working Nexys 4. You are right, the factory loaded demo will display "Fail 2" on the seven segement display if the Nexys 4 board is not on a flat surface on initial start. Thank you for contacting us. Have a great day!

Jon P

 

[Alex]

HI, do you mean that you see a FAIL in the seven segment led? And, have you seen the tri-color light is flashing? 

Here states the self-test in the reference manual.

A demonstration configuration is loaded into the SPI Flash device on the Nexys4 board during manufacturing. The source code and prebuilt bitstream for this design are available for download from the Digilent website. If the demo configuration is present in the SPI Flash device and the Nexys4 board is powered on in SPI mode, the demo project will allow basic hardware verification. Here is an overview of how this demo drives the different onboard components:  The user LEDs are illuminated when the corresponding user switch is placed in the on position.  The tri-color LEDs are controlled by some of the user buttons. Pressing BTNL, BTNC, or BTNR causes them to illuminate either red, green or blue, respectively. Pressing BTND causes them to begin cycling through many colors. Repeatedly pressing BTND will turn the two LEDs on or off.  Pressing BTNU will trigger a 5 second recording from the onboard PDM microphone. This recording is then immediately played back on the mono audio out port. The status of the recording and playback is displayed on the user LEDs.  The VGA port displays feedback from the onboard microphone, temperature sensors, accelerometer, RGB LEDs, and USB Mouse.  Connecting a mouse to the USB-HID Mouse port will allow the pointer on the VGA display to be controlled. Note that some Microsoft mice have difficulty communicating with this demo.  On power-up, the seven-segment display will show the results of an automated test for the onboard CellRAM, accelerometer, and temperature sensor. It will then display a moving snake pattern. Note that the accelerometer test will fail if the board is on an unstable or un-level surface when it is powered on, and the temperature sensor test may fail if the board is in an extreme thermal climate. With these two considerations in mind, if your board is reporting a failure, make note of the error code and contact Digilent support at support@digilentinc.com. 

 

 

[Lex21]

HI, do you mean that you see a FAIL in the seven segment led? And, have you seen the tri-color light is flashing? 

Here states the self-test in the reference manual.

A demonstration configuration is loaded into the SPI Flash device on the Nexys4 board during manufacturing. The source code and prebuilt bitstream for this design are available for download from the Digilent website. If the demo configuration is present in the SPI Flash device and the Nexys4 board is powered on in SPI mode, the demo project will allow basic hardware verification. Here is an overview of how this demo drives the different onboard components:  The user LEDs are illuminated when the corresponding user switch is placed in the on position.  The tri-color LEDs are controlled by some of the user buttons. Pressing BTNL, BTNC, or BTNR causes them to illuminate either red, green or blue, respectively. Pressing BTND causes them to begin cycling through many colors. Repeatedly pressing BTND will turn the two LEDs on or off.  Pressing BTNU will trigger a 5 second recording from the onboard PDM microphone. This recording is then immediately played back on the mono audio out port. The status of the recording and playback is displayed on the user LEDs.  The VGA port displays feedback from the onboard microphone, temperature sensors, accelerometer, RGB LEDs, and USB Mouse.  Connecting a mouse to the USB-HID Mouse port will allow the pointer on the VGA display to be controlled. Note that some Microsoft mice have difficulty communicating with this demo.  On power-up, the seven-segment display will show the results of an automated test for the onboard CellRAM, accelerometer, and temperature sensor. It will then display a moving snake pattern. Note that the accelerometer test will fail if the board is on an unstable or un-level surface when it is powered on, and the temperature sensor test may fail if the board is in an extreme thermal climate. With these two considerations in mind, if your board is reporting a failure, make note of the error code and contact Digilent support at support@digilentinc.com. 

 

 

Yes it showed "Fail 2" on the seven segment display but i think it was because it was tilted to the side and not in an even surface. Thanks