Hello everyone, my name is Marcio and I speak from Brazil, I recently reviewed a GM vehicle here from Brazil in the butterfly body part and realized that it is already being made by SENT communication, I would like to leave a suggestion for a new update of pico software adding SENT protocol decoding thank you friends.
Thank you for your post. SENT isn't uncommon these days and can be found a variety of sensors like the throttle body that you have seen on GM. I expect you will also see it on the MAF sensor as well.
To answer your question you should see that SENT is already added on the list of serial decoding options with the option of FAST and SLOW.
If you can capture some raw data and post the file either here or on the waveform library then we could all take a look.
Thank you ashtray for uploading this file as I must admit I've yet to see a SENT signal let alone decode it!
I've done the decode based on a SENT FAST and SENT SLOW and you can do the same using the serial decode tool. In SENT FAST you will be asked to select what the sensor type is which you can select from the drop down box. If you include SENT SLOW you also see the additional data on top of the data underneath.
i have a 2204 A USB Oscilloscop and want to decode a Fast and Slow SENT Signal.
I managed to decode the Fast Ring, getting almost reliable Messages in the decode table.
But the Slow Ring is a problem. I was opening up the time frame to get enough messages to have a full Slow Message, but i only get a low number of messages decoded. Most of the messages have a CRC Fault.
Is the 2204 A good enough to cope with the Slow Messages?
Please accept my apologies for only getting back to you now on this. If I'm being completely honest I've never tried the 2204 on a SENT circuit. To get the SENT slow messages you need to have a number of FAST messages to create a SLOW message. With the 2204 the sample rate and resolution are going to let you down when it comes to capturing lots of data with enough resolution to decode. I can try to see where the limitations are with SENT and a 2204 but being on the Automotive side of the business we don't get a lot of time to use the Test & Measurement devices.
It may be you have to find the balance between sample rate and buffer length in order to see more packets of data. For more information on the 2204 limitations could I recommend emailing into support@picotech.com.
Sorry I can't be of any more assistance right now and if I do get a chance I will post my findings here.
Apologies, I should have posted the link to following topic as there is a lot more information in decoding SENT data here - viewtopic.php?p=99852#p99852