Which one should I choose between DSP and AVR32?

Log in or register to post comments
Go To Last Post
6 posts / 0 new
Author
Message
free71
free71's picture
Level: New Member
Joined: Fri. Jan 27, 2006
Posts: 10 View posts
#1
Posted by free71: Thu. Mar 5, 2009 - 01:34 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hi,
I am a newbie to AVR32 but I am quit familar with AVRs.
I am going to develop a project which need some float math. Can someone give me a idea how many cup clock is needed for a float (floating point and fixed point) divide/multiply operation with AVR32?

Another question is can the AVR32 be programed like a normal USB device? I mean can be reconised by Windows as a device which I programed?

Thanks.

Tags:

AVR Microcontrollers, AVR UC3
Top
leon_heller
leon_heller's picture
Level: Raving Lunatic
Joined: Fri. Jul 27, 2001
Posts: 7672 View posts
Location: St. Leonards-on-Sea (UK)
Posted by leon_heller: Thu. Mar 5, 2009 - 02:03 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Why don't you look at the data sheet?

Leon

Leon Heller G1HSM

Top
austca
austca's picture
Level: Hangaround
Joined: Mon. Jan 21, 2002
Posts: 197 View posts
Location: Kelseyville CA USA
Posted by austca: Fri. Mar 6, 2009 - 01:41 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Reading the data sheets for AVR32 and a few DSP's would be a first step in picking your MCU/DSP. If you need alot of floating point math... get a CPU with floating poing math in hardware....

If this is a one off project and you dont care about power usage and speed you might get by with a fixed point cpu doing the floating point in software.... alot slower......

If you explain your project in some detail there are kind folks on here that will provide you with infomation about getting started....

Your best friend will be Google, and a close second will be the seach feature on this web site.

With few details giving in your post you will find few details given as answers....

Caleb

Top
drt80
drt80's picture
Level: Resident
Joined: Fri. May 23, 2008
Posts: 806 View posts
Location: Pune, India
Posted by drt80: Fri. Mar 6, 2009 - 04:04 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Yeah, give some more information about your needs for someone to help you out.

Anyways, the UC3A and UC3B have an in-built bootloader and can be programmed using "batchisp" which comes with "FLIP".

-drt

Top
jbb
jbb's picture
Level: New Member
Joined: Wed. Jul 12, 2006
Posts: 2 View posts
Posted by jbb: Fri. Mar 6, 2009 - 10:43 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

The floating point unit (FPU) question is always tricky - and you have to evaluate if you really need it or can scrape by with emulation / fixed point.

I've had a look around for floating point chips myself, and what I found is that if you want a microcontroller with an FPU you end up with a Texas Instruments TMS320F2833x. They go at up to 300 MFLOPS and come in TQFP packages and have ADCs, PWM etc.

Unfortunately they're a bit expensive, and need a JTAG emulator and compiler license. You could try getting a TMSDOCK28335 which has a processor and JTAG emulator for $99 USD.

Before anyone asks, my only affiliation with TI is to beg them for free samples.

Top
leon_heller
leon_heller's picture
Level: Raving Lunatic
Joined: Fri. Jul 27, 2001
Posts: 7672 View posts
Location: St. Leonards-on-Sea (UK)
Posted by leon_heller: Sat. Mar 7, 2009 - 09:02 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

The 32-bit Renesas R32C/111 has an FPU. They are quite cheap.

Leon

Leon Heller G1HSM

Top