... unrolling the loop a bit may help, as it reduces the number of branch instructions needed. -- Ben Q: What's a light-year? A: One-third less...
Ben Dooks
ben@...
Feb 1, 2004 10:58 am
751
This was a great idea ! I am now at around 5,8956 MBytes / second, which is close to 5,898 MBytes / sec. ( = Fosc * 4 / 10). So the two operations ( ldr ip,...
I have software libraries (no source code) developed with ADS 1.2 that I need to use in my LPC2106 project. Can I use them with GNU tools??? Best Regards, Igor...
... Purely from a core point of view, on ARM7TDMI a load takes three cycles: 1) Sets up the address 2) Reads from memory 3) Writes the data into the specified...
Hi Martin, the answer to your question about the number of cycles needed for certain instructions id "it depends". First of all the LPC2100 devices are regular...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the lpc2100 group. File : /jtag.pdf ...
lpc2100@yahoogroups.com
Feb 1, 2004 6:10 pm
756
I've just traced through the circuit of the Wiggler, simplified it (I didn't see why it needed two buffers in series on most of the signals) and put it into my...
... I was wrong about my original interface, I'd got the DB25 connected up incorrectly - I'd designed the PCB for a female instead of a male connector. Cutting...
... Don't you have to put the resistors between the parallel port and the buffer? The buffer gets its power from the target board which is 3.3V. As far as I...
Soeren Gust
gust@...
Feb 2, 2004 1:56 pm
759
... Yes, it probably would be a good idea. The Wiggler doesn't have them, though. I'm actually using an HC244 - it works OK. The parallel port I'm using has...
I am trying to find information about the EINT0-2 ports for the LPC210x. Are they Level or Edge triggered? I am writing software for a USBN9603 controller. ...
Hello. I have updated the GNUARM toolchain. Finally I was able to compile and test the Insight personality of the GDB debugger. Please find the new installer...
I came across this pdf while searching for a decent ADC to use with the 2106: http://www.ece.cmu.edu/~agr/IMPALER/report.pdf They built a system to test what...
I'm working on designing a new project where we need to process 9600bps packets (similar to G3RUH format), we'd like to use the LPC2106 which ought to be fast...
... Can you not do the SPI sample activity from a timer interrupt handler, assigned to a nice high priority interrupt in that lovely vectored interrupt...
... I may put them beneath for mine. I fancy learning surface mount board design (already done PTH), so am not particularly fazed by the effort of doing it...
On Mon, 02 Feb 2004 08:34:01 -0800, Brian C. Lane wrote: I'm working on designing a new project where we need to process 9600bps packets (similar to G3RUH...
Hi: I 'm starting with the LPC ARM's, and I would like to know where I could get examples and information about programming (preferable in 'C') this chips with...
... Yeah, I know. I'm working on extracting the needed info from Philips right now :> If I can get the info and if we can get parts samples then that's the...
Brian, The experience I have had with the secondary JTAG port has led me to these conclusions: A) Put 2 headers on your board, 1 for the Primary, and 1 for the...
Hi ! Does anyone have the secondary jtag for the flash in *.hex or bin ? I donīt have the right toolchain yet and cannot compile the code wich in the...
... Thanks for the great info! Having JTAG 2 ports in the design would make using the 2106 impossible (we really need all those pins). Has anyone had similar...
Does anyone have information on how many CPU cycles it takes to get into and out of a FIQ interrupt? Does it matter what interrupt triggered it? I'm trying to...
Hi Brian, The document DDI0029_7TDMI_trm.pdf explains the minimum and maximum interrupt latencies in Section 2.9 for FIQs and IRQs, which is 5-29 cycles for...
... I found DDI0234A_7TDMIS_R4.pdf from the ARM website (ARM7 TDMI-S core document) and it says the worst case is 27 cycles. Still haven't sorted out the...
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