dumbguy

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Everything posted by dumbguy

  1. Dear Attila, Thanks for your kind help, yes it worked. I am now able to see the data. The next task that I want to achieve is to be able to feed the same data through my DigiLent device to my device. So I want to use the patterns functionality of the WaveForms programm. So my question is could this data now be some how fed into the WF software ? Thanks in advance for your kind feedback.
  2. Hello Attila, Thanks for your kind response. I hope you are well. The program suggested by you could not open the file I generated using WaveForms. Its says : Much obliged if you could help to fix this issue.
  3. The python script generates a file called: record.bin. Does any one know, how to read this file ? Also please see the image below from"pattern". Any idea what the terms PP and TS mean ?
  4. Ok. So I understood, that I have to keep the WaveForms software closed while using this script. It works now. The application appears to generate a .bin file. I am not sure how it be opened ? Can it be read in WaveForms ? How can the sampling rate be reduced ? It seem to be high. (by changing the paramete: divSample = 80 ?). Thanks in advance for your assistance.
  5. Oops ...still no Luck ! Why does it say that the device is busy ? Its not connected to anything other than the computer.
  6. Traceback (most recent call last): File "C:\Users\xxxxx\Desktop\paralllel signals\python script\DigitalDiscovery_RecordToFile16.py", line 15, in <module> import matplotlib.pyplot as plt ModuleNotFoundError: No module named 'matplotlib'
  7. Hello, This python code appears to have some error : "Traceback (most recent call last): File "C:\Users\XXXX\Desktop\DigitalDiscovery_RecordToFile16.py", line 11, in <module> from dwfconstants import * ModuleNotFoundError: No module named 'dwfconstants'" I am sorry I have no knowledge of Python. Kindly help .... Thanks in advance.
  8. Deat Atilla, Thanks fo your kind response. I have another question. I am trying to record the 16 Bit spectra. However there seems to be a limit to the amount of data that I can capture. Is there some way to increase this any lets say capture for 30 minutes and not for 3 seconds ? Thanks for your kind assistance on this matter.
  9. Hello Attila, Thanks for your message. I hope you are well. Please note the screen shot from the application. It appear that there is 3.3V at which the threshold is defined as 1.42 V. Can this be adjusted to 2 volt. I see a lot of cross talk. See Image 2. I am assuming that the yellow marked spikes are cross talk ? Thanks for your guidance.
  10. Hello Everyone. First of all a good day to you. I hope you are well and in good health. I am trying to use my wonderful Digital Discovery to read data from 16 pin digital output. "Parallel" output. Therefore I have my device hooked upto all 16 channels and I can see data. My questions are: 1. How do I decode 16 channel parallel bus data using DD ? 2. Since the data is being read off from a chip that is soldered onto a board, I have soldered small wires to each terminal, which feed to the high speed probing cables supplied with the DD. I suspect that there cou
  11. Hello Colvin, Thanks for your feedback. Yes, this does appear to be a decimal counter and the MOSI signal is missing. I have now tried an Oscilloscope (60 MHz) to see if there is a data signal some where I could find the following pins on the flat ribbon cable: A. 1.8 KHz B 900 Hz C. 480 Hz D. 240 Hz E. 120 Hz F. 60 Hz G. & H : Both at 60 Hz Besides that there appears to be a line that is further down on the ribbon-cable that appears to be at 64 Khz and yet another one at 3.2 KHz ! Also, it appears that some of these signals ar
  12. Hello Colvin, In attachment you will find the WaveForm capture from 8 channels that I am monitoring. It appears to me that none of these is a MOSI or MISO. The DIN01 is possibly the Clock. DIN01 and all others appear to be either a chip select or an inverted CS (Ex. DIN03). Either I am not observing the correct channel or there is a cross talk due to which I am not able to read off the MOSI/ MISO correctly ? I am using the high speed cables and adapter as recommended. However I am not sure if I am using them correctly. The red line is the probe, what should be done with
  13. Wow JColvin....great contribution. Wish me luck. I will write back once I have tried this out.
  14. Dear Colvin, Thanks for your message. What you have mentioned is valuable. There are possibly several serial sensors that are being probed (one after the other). This implies that the CSs are switching between the sensors. So all this appears to be happening really fast, the system does not stop at all !! (wow) Unfortunately, I am not sure which ┬ÁC is being read. It appears to me that there is a XILINX chip ( a large one) that is possible an FPGA which is working as a micro controller. I may be completely wrong (I am just a real novice, so I know less about these things). There is a
  15. I am now trying to debug a SPI bus, where there appears to be more then 4 wires. If fact there are 7 or 8 wires and its not clear which is which. So after a lot of trying, it appears to me that the the SPI bus has 16 bits and it has several (3 or 4) chip selects running. Possibly to signal end of word and end of a sentence. I have read somewhere that 16 bit SPIs exist. Can some one share experience about it ?
  16. So, I think I have found the solution. The ends of the digital probes (the dark colored lines) should be connected to the ground. (All the probe lines that are used). Also if SPI is being observed, then its preferable to increase the measurement frequency to 200 MHz or even 800 MHz.
  17. Hello, Thanks for your suggestion. So I have now got the high speed probing cable set form Digilent. I have connected the probes to the SPI bus. The graphic below slows clearly there is no differnce in the behaviour of the digital signals. Is there something I am doing wrong ?
  18. Hello, I am using the Digital Discovery to read an SPI transmission. The lines are as follows: 1. CS ; 2. Clock; 3MOSI; 4 is MISO. Please observe the transmission below. In several transmissions, the CS goes high in the middle of a 8 bit clock cycle and thereby signals the end of a communication. As can be seen below a "?h50" was recorded, in response, it seems that the slave-unit sent "?hF0". Here are my questions. 1. Why is the CS going to high suddenly in the middle of a communication ? 2. What is "?h50" & "hF0". 3. Does this appear to be a
  19. Analog Discovery 2 I am looking for a device with which 1. I can monitor 40 digital channels at the same time. The sampling rate is less than 40 Hz. 2. In addition to that I want to be able to also generate a desired signal for these 40 channels that I can feed back to my main board (to test it). May I kindly ask if Analog Discovery 2 could achieve this. As i understand, this device has a limit of 16 digital I/0 channels. Would it be possible to buy a device which could do 40 channels and or could I connect 3 such devices in such a way that the above mentioned