Digital Oscilloscope using Atmega8 and LabVIEW

My Project work good on baud rate of 38400..But it give distorted waveform..So i tried for baud rate 76800 and 115200..Using this baud rate nothing is shown on my graph ..?what problem controller side or labview?

i am using 16 mhz external crystal and giving 1Mhz clock to ADC..Please look at my attachment...

Did you check the % error for 76800 and 115200 bauds? Also check in datasheet for right baud rate generator values.

hi vijay ,

kindly convert the Vi to Lv12 .So that i can open and see the code in Labview.
i am using Lv12.

Regards
Pravin

@ Ajay Bhargav-for 115.2k error is -3.5% and for 76.8k error is 0.2%...but for this 2 particular baud rate i am not getting output...what is the problem???
At which value i am able to get good waveform???How we can reconstruct signal well???

@pravin bro...---look at labview12 file

@pravin bro...---look at labview12 file

Attachment

• lv12.rar

vijay.parmar1992

hi..

Still i could n able to Open that are you sure that converted to previous version...

Go to File >Save as previous Versions> Select 12 from menu.....


Rgds
Pravin

@pravin

@pravin

Attachment

• lv122.rar

vijay.parmar1992

Hi Vijay ,

you cant able to read anything by this Lv code... since you have not connected any wires. Your code is incomplete.
Seems you are not Familiar with the Basics of Labview..
Go to examples and open Serial read write Example Vi and choose the Com port Baudrate..and then try to execute the code...

Let me Know Further

Rgds
Pravin

Ohhh ...dear so sorry please look at this file

Ohhh ...dear so sorry please look at this file

Attachment

• daq_f_compen_dso_folder.rar

vijay.parmar1992

hi,

Try to give some delay in while loop and den try i have simulated the graph its working fine .now you have to check with the Controller side weather data is Transmitting or not .. and then try with your same code ..... that you have created.... PFA modified code.