[sdiy] Microchip DSP kit $60 > AVR32

Gabriel Lindeborg gabriel at lindeborg.org
Fri Mar 21 19:17:25 CET 2008

Ah, sorry 'bout that, it should read AVR32 as in the subject...


Eric Brombaugh skrev:
> Gabriel Lindeborg wrote:
>> Or you could go the ARM32 way, seems to a very interesting uC with 
>> good tools (as always with Atmel), USB 2.0, AC97, Audio DAC and so on...
>> Anyone doing anything SDIYish with it?
> I'm curious about ARM32 - I've only heard of this in the context of 
> the arm32 port of NetBSD, which is really just a port to the standard 
> ARM architecture. Perhaps you mean 32-bit ARM, which both the ARM7 and 
> ARM9 architectures are.
> Quibbling about terminology aside, yes - ARM processors are ideal for 
> SDIY. The Atmel AT91SAM7SXX parts which you alluded to are 
> particularly interesting since they're relatively inexpensive ($8 in 
> small quantity) and have decent memory and handy peripherals, 
> including a USB 2.0 compliant device port (not high-speed though), an 
> I2S audio codec interface (not actually an on-chip DAC), 10-bit ADC, 
> as well as the normal timers, UARTs, SPI and I2C. And they come in 48- 
> and 64-pin LQFPs that are pretty easy to build with. Software tools 
> run the gamut from freeware GCC toolchains (some considerable user 
> assembly required), low-cost IDEs from the likes of Rowley, all the 
> way up to multi-thousand dollar pro tools from Keil and IAR.
> The other nice thing about ARM is that it's multi-vendor supported. 
> You can get ARM-based MCUs from
> Analog Devices
> Atmel
> Freescale
> Intel
> Oki
> Samsung
> ST
> TI
> with different flavors of peripherals. The ADI ADuC parts are pretty 
> neat in that they have 4 on-chip 12-bit DACs which would be pretty 
> useful for CVs.
> One great example of this is the Make Controller 
> (http://www.makingthings.com/products/KIT-MAKE-CTRL) which is 
> open-source, tailored for DIY appllications and can be hooked to Max/MSP.
> So, yes: ARM processors are great for SDIY applications. They're a bit 
> more expensive than PIC processors, and the development tools take a 
> bit more effort to set up though, so it seems they're not as popular 
> as the more low-end devices.
> Eric
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