hello, i am trying to communicate with spi to an 5v powered ic (tpic6b595). problem seems to be the outputs (mosi, cs, clk) with a high level which is to low...
hello, i am trying to communicate with spi to an 5v powered ic (tpic6b595). problem seems to be the outputs (mosi, cs, clk) with a high level which is to low...
Tom, I avoided this problem by switching from a TPIC part over to an On Semi NUD3112DMT1 which is a tiny/low cost dual inductive load driver which has built in...
Al, the on semi part is not an option because of: a) the mex. drain source voltage is 16V but i need 40v. b) i need a serial to parallel shift register because...
Tom Then plan B would be to look at Level Translators from TI. They offer dual supply. Al ... From: AT91SAM@yahoogroups.com [mailto:AT91SAM@yahoogroups.com]...
Or maybe even Atmel themselves; the U6815BM is a hex driver w. 6x low-side + 6x hi-side MOSFET drivers which can be connected as 6x push-pull outputs also. ...
Hello, I am newly in the ARM community. Use SAM7A3. Which compiler is at the better to use (Keil, IAR)? Is the gccARM 3.3.1 to be recommended ? Thanks Johann...
Hi, some time ago we bought the mentioned board which is bundled with the J-Link and IAR. Recently I downloaded the eval version of CrossWorks. After setting...
Hi, There is a command line tool, which pretends to be a GPLed SAM-BA by paul(at)pjrc.com : http://www.pjrc.com/arm/sam7_pgm/ I've tried it and found it works...
hello again, atmel support confirmed that there is no protection diode between i/o pin and vddio. so there is no problem to connect the pin with a pull- up to...
anybody has finished the i2s use ssc and worked with some codec or dac /adc? i have write some code for sam7s64 according at91rm9200,but the voltage of tk...
I need to be sure that all the data is shifted out before I write new data to the tx regsiter of the USART. If my com port is configured for 115200 how long...
For the AT91SAM7S256 are there any solutions out there that will allow me to easily expand the amount of avaiable SRAM? Thanks for any info. -Henk ... From:...
Kinda. You can do it either like virtual memory in your PC or as a manual swap. Grab any SRAM chip and bitbang everything via the ARM's GPIOs. You can start...
... By playing with other divisor values you should be able to get far faster than this, but what are you sending the data to? Most PCs can't handle higher...
... There being no MMU on a SAM7, this sounds pretty challenging. I suppose you could do something in an exception handler. eg. Say you map a virtual memory...
... tight code. ... You can find the sources as well as compiled binary for version 3.4.3, as well as other versions, at www.gnuarm.com. BTW, this site is paid...
Hello, One option you may look into is using a serial flash memory. You can setup the SPI with PDC to move blocks of memory between the Flash and the...
... For those that are mildly freaked out by the thought of building a compiler from source, it is not a complex process at all. The instructions on how to do...
... Yes, sorry that is what I meant. You can either use the exception handler or do a manual swap of a region of SRAM to your external SRAM. I don't know how...
Hi all, I am working with an AT91SAM7S64 and am turning to the list wit an USB related problem. I hope you can help me. When the host is doing an OUT transfer...
Foltos
foltos@...
Feb 9, 2006 4:11 am
990
Hi, there was a thread with the subject "AT91SAM7S64 USB happiness??" before. Morten Larsen had problems with OUT control transfers. I think he had the same...
Foltos
foltos@...
Feb 9, 2006 4:13 am
991
No, I did not have time to look at it more closely - but you are correct; the ZLP-handshake of the OUT transaction did not work when the transaction carried a...
... compiler ... other places. ... For Windows users, it has been "pre-packaged" at http://www.siwawi.arubi.uni-kl.de/avr_projects/arm_projects/#winarm or...
Hi All, Is anybody using the AT91SAM7X and is it easy to get hold of? Regards Mike...
Mike Betz
mike@...
Feb 10, 2006 5:00 am
994
Hello, First post to the list. I am in the process of redesigning an ATMega128 unit, and am thinking about the sam7s128 or s256. I was also looking at the...
My distributor mentioned production quantities will be available in mid to late March. From what I understand samples are very difficult to get now. It looks...
... Building is not required with the files at www.gnuarm.com. There are precompiled binaries for Windows, Unix and Mac OS X. In fact, I am currently...
Glen, Wait states are required for the flash only. Normally your program will need access to RAM as well. So you will have some advantage to run the core above...
