On 4/16/2012 5:00 PM, Stephen Dubovsky wrote: >> As far as I can tell, ARMs are in a different class. (Price, complexity, >> performance, etc.) >> >> Ken >> >> > They ARE in a different class:) They're cheaper AND faster. The ARM > support community is bigger than any PIC/TI/AVR/etc. (probably bigger than > anything but the x86.) > > As examples: > 1) NXP LPC1111 (Cortex M0) is<$0.50 in qty. Digikey has for ~$2 for > singles. Its cheaper then a HC08QT/QY w/ more pins, more speed, lower > power, more memory, 32bit vs 8, etc, etc. > > 2) ST STM32F407 (Cortex M4F) is ~$5 in qty (depends on memory). Digikey > has for ~$11 for single in VET6 pkg. 200MIPS, Ethernet MAC, USB, 192kB > RAM, 512kB FLASH, 24x 12bit ADC (~7MSPS in some modes) and *SINGLE CYCLE* > IEEE754 single-precision floating point multiply or add. MAC is 2cyc. > Divides and SQRT instructions take only 14 cycles. > > Just doing a quick digikey ATmega search finds the AVR ATMega2560 (maybe > not the best comparison but Im in a hurry). $18ea, 8kB RAM, 256kB flash, > 16MIPS, 8-bit processor. Not even on the same continent. > > Like I said, we've used them all at work (we have millions of units > shipped). We were fairly dedicated PIC fans until we needed something w/ > more memory than a PIC18. That lead us to ARM after a fairly exhaustive > comparison of EVERYTHING. The icing on the cake was the tiny processors > like the LPC1111 that were *WAY* better and (marginally) cheaper than the > HC08s we use on our super low end products (the equivalent of a > 'toaster':)). It REALLY opened our eyes. We had no idea ARMs had > penetrated so low end into the mkt. There are dozens of companies making > thousands of ARM processor variations. One will have the > peripherial/memory flavor at the price point you need. The code is mostly > compatible from the top to bottom of the cortex line (and *WAY* more than > porting from TI to AVR to PIC, etc) > > Stephen >
OK... I'll bite. What kind of software tool chain and hardware is good to get started on a NXP LPC1111 or similar Arm? I found also found.. http://ics.nxp.com/lpcxpresso/~LPC1111/ http://www.pololu.com/catalog/product/2150 http://www.sparkfun.com/categories/219 http://www.mouser.com/stm32discovery/ http://www.mouser.com/ProductDetail/STMicroelectronics/STM32F4DISCOVERY/?qs=sGAEpiMZZMutVogd4PRSvEN8XDBeCtgD Dave ------------------------------------------------------------------------------ Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
