I am finding difficulty to apply Low pass filter for the Tiva C series board (tm4c123gh6pm) using CMSIS library. Please suggested to me.
I have a few remarks for this post:
1) Please rewrite your question, taking into account proper forum etiquette (for asking technical questions). I will not suggest an exact guide, as I am sure you will find many with a simple Google search. I can point out a few things, your question is very vague and provides no information about what you have already attempted. My suggestion (after you review some forum etiquette guides), is to rewrite/rephrase your question to include more information. This will help members of the community better understand the issue at hand. Include detailed information about your hardware setup (with pictures, if possible), list of tools you are using, code you have written, logs, guides you have already consumed and/or followed, etc... This will all be very helpful for anyone who might be able to help and/or collaborate with you in any forum thread.
2) This question is not fitting for this category (Infrastructure Solutions). If you are talking about the CMSIS library  for DSP applications, and referring to a Tiva C series developer board, I would suggest taking this question (once you have better presented your ask) to either of the following two Arm forum categories:
I) Developer Platforms forum 
II) Embedded forum 
3) Please feel free to tag me in your new post, and I will do my best to find someone who might be able to help.
I hope this help! Thanks.