topic Help with LPC1769 DSP lib in LPCXpresso IDE

Help with LPC1769 DSP lib

lpcware — Thu, 16 Jun 2016 01:04:20 GMT

Content originally posted in LPCWare by Nelling on Mon Sep 02 01:42:55 MST 2013
Any kind souls can show me how to do an FFT to an 12 bit, analog input ? using the cmsis dsp lib ?

I already got my ADC inputs ready , just do not know how to use the dsp lib.

Any help is deeply appreciated ! :) Thank you !

Re: Help with LPC1769 DSP lib

lpcware — Thu, 16 Jun 2016 01:04:21 GMT

Content originally posted in LPCWare by usb10185 on Tue Sep 03 13:15:55 MST 2013
Hi,

There are some basic examples of how to work with the DSP libraries in this Application Note:
http://www.nxp.com/documents/application_note/AN10913_CM3_DSP_library_v1_0_0.zip
You'll need to get the ADC samples into an array for processing.

Thanks,
Ken

Re: Help with LPC1769 DSP lib

lpcware — Thu, 16 Jun 2016 01:04:22 GMT

Content originally posted in LPCWare by Nelling on Tue Sep 03 22:38:20 MST 2013
Sorry Ken, if you don't mind , could you run through the process of building the lib and accessing it with me ?

I am using an LPC1769 REVB with lpcexpresso, I am already done with getting the 12bit ADC and understand that I have to put in an array but I do not know what are the basic libs etc or how do I access this dsplib to build it.

Any help is appreciated thank you !

Cheers,
Nelson

Re: Help with LPC1769 DSP lib

lpcware — Thu, 16 Jun 2016 01:04:22 GMT

Content originally posted in LPCWare by lpcxpresso-support on Wed Sep 04 07:49:08 MST 2013
The DSP library that Ken pointed you at is actually a different DSP library (that NXP made available before ARM produced the CMSIS DSP library).

If you want to use the CMSIS DSP library, then you should check out ARM's documentation, which can be found within the built in help of LPCXpresso. This includes some examples of its use.

Or you can download the original full deliverables from http://www.arm.com/cmsis

General information on CMSIS DSP library within LPCXpresso can be found at:

http://support.code-red-tech.com/CodeRedWiki/cmsis_dsp

[though note that this is now slightly out of date with regards to version numbers.]

Regards,
LPCXpresso Support