Paul Chang

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  1. Hi @artvvb, I have re-download and re-install the Vivado 2019.1. It can work now. Best Regards, Paul
  2. Dear Sir, I am test 1Mhz sinewave loop-back .(see attach file sig.png and spectrum.png and scope.png) And output the result to csv file. I try to analysis csv data in matlab. But the matlab spectrum result is different with result of waveforms.(matlab_spectrum.png) How to solve this? Best Regards, Paul fftscope.m test.csv
  3. Thanks for your help.
  4. Dear Sir, Is it possible to change RS485 to RS422 interface? How to set it to RS422 full duplex? Thank you. Best Regards, Paul
  5. Hi Arthur, I have tested this flow in vmware .(Ubuntu 18.04) It still can not work fine. Your project can not synthesis also. Ubuntu 18.04 Windows 10 Best Regards, Paul
  6. Hi Cristian , Thanks for your support. I don't know why I can not success to create the vivado project. Please see my process: 1. git clone --recursive https://github.com/Digilent/Eclypse-Z7-HW.git -b zmod_adc_dac/master 2. open vivado 2019.1 3. type below command in tcl window 4. The error is same. Best Regards, Paul
  7. Hi Cristian, I am using Windows 10. Is it only support Linux os? Best Regards Paul
  8. Dear Sir, I would like to re-create the zmod_adc_dac vivado project. I have follow this link But it seems can not recreate the Vivado project. Error below: (more info and please see log.txt) can't read "assoc": no such variable ERROR: [BD 41-1273] Error running post_config_ip TCL procedure: can't read "assoc": no such variable update_assoc_busif Line 6 Best Regards, Paul log.txt
  9. Dear sir, I would like to know Analog Outputs limitation. Does it can support the requirement ? AC Freq range 0.05 Hz~120Hz AC voltage range: -10mV ~ +10mV AC resolution : <0.1mV DC offset is greater than -1000mV ~ +1000mV: DC offset resolution 5mV special AC AC overload test : 1 Vpp @50Hz/60Hz Another question: Can it measure input loop current <0.1uA? Best Regards Paul
  10. Dear Sir, I took my NB and tried to read the JTAG-SMT2-NC module via USB, but I always had the error "usb device descriptor failure code" Is there any way to solve this problem? Best Regards Paul
  11. Hi Jon, Thanks for your answer. Best Regards, Paul
  12. Dear Sir, I don't know why can not assign the XADC package pin to my port. It is assign F19 and G19 automation. Please see my attach file. How to define the constraint ? runme.log CRITICAL WARNING: [Vivado 12-1411] Cannot set LOC property of ports, Could not legally place instance vauxn6_IBUF_inst at E16 (IOB_X1Y147) since it belongs to a shape containing instance u_xadc/inst/u_xadc/inst. The shape requires relative placement between vauxn6_IBUF_inst and u_xadc/inst/u_xadc/inst that can not be honoured because it would result in an invalid location for u_xadc/inst/u_xadc/inst. [D:/Basys3_test/lab4_zed/project_1/project_1.srcs/constrs_1/imports/zed.xdc:72] CRITICAL WARNING: [Vivado 12-1411] Cannot set LOC property of ports, Could not legally place instance vauxp6_IBUF_inst at F16 (IOB_X1Y148) since it belongs to a shape containing instance u_xadc/inst/u_xadc/inst. The shape requires relative placement between vauxp6_IBUF_inst and u_xadc/inst/u_xadc/inst that can not be honoured because it would result in an invalid location for u_xadc/inst/u_xadc/inst. [D:/Basys3_test/lab4_zed/project_1/project_1.srcs/constrs_1/imports/zed.xdc:75] Best Regards, Paul osc_top.rar
  13. Dear Sir, Please see the attach picture. Sorry, I don't know its noun. (yellow background) Can I hide it? Best Regards, Paul