Hi Tom, The RTCK isn't strictly needed. Without the RTCK if the JTAG port works slowly, as is the case of the LPC2xxx, then the JTAG cable/debugger has to put...
From: "Michael Johnson" ... AFAIK: (1) Use of RTCK for PLL'ed MCUs. It is extremely useful when you have an MCU that starts at a slow speed, then turns on a...
Hi Arie, I would agree that the RTCK is useful. This thread started when someone wanted to throw away JTAG pins. I would throw away TRST (tap reset - which can...
Hello, which version have you tried and found this bug ? Regards, Martin ... From: "Stefano Coluccini" <s.coluccini@...> To: <lpc2000@yahoogroups.com> ...
Hello, there is a yahoo group lpc21isp for a few month new about the lpc21isp. Can you merge in your changes to 1.28 and upload this as new version to the file...
01/10/2005 - 12:30 AFAIK, You need >2MB program storage so Flash-based MCUs are out, also is necessary a MMU (Memory Management Unit). The Atmel AT91R40008 is...
To add to the benefits of RTCK: How would one enable debug without the RTCK pin? Excerpt from a Data Sheet: "RTCK - Returned Test Clock output. Extra signal...
Is there an updated data sheet for LPC214x that lists the active mode supply current with CCLK running @ 60MHz, or is this still <tbd>? I don't have a LPC214x...
Hi, for uCLinux you don't need a MMU. Also you don't need 2 MB of program storage but at the very least 512 KB and lots of RAM, much more than 64 KB. While you...
This question is sort of academic because all of the LPC's have a VIC but is it possible to use FIQ without using the VIC? Lets say I want to set up a simple...
... In LPC2000, the FIQ and IRQ signals to the ARM7 core come from the VIC, so you get no interrupts without involving the VIC. FIQs don't use the "vectored"...
The Signum JTAGjet claims download speed in excess of 1 MByte/sec, not 1Mbit/sec. From the Signum web site http://www.signum.com/Signum.htm "Actual speed 1.062...
Incredible download speeds ... If I have to download 64 kB to RAM for running (or flash programming) the wiggler will do this in 4 secs, the JTAGjet in...
... What's a major debugger? ... The LPC22xx could be used to run programs from an external SRAM - this is an approach that can be used to avoid the two...
... Stepping performance is fine with both wiggler and CrossConnect. Wigglers work remarkably well in this area since there are no comms latencies and the...
John, ... You can't get anywhere near that on ARM7TDMI-S parts which we are dicussing, so this claimed speed is irrelevant in this instance. ... Yes, the...
Hi! Are there any ISP programs available that can be used on a PocketPC? Would like to be able to reprogram from a handheld out on the field. As I quite often...
Hello, i am using a LPC2148 via USB, connected to my PC (under WinXP and libusb-win32, PC has USB 2.0). I am currently trying to understand how i can send data...
Hi Martin, ... This is a common misconception. USB 2.0 is a specification that specifies a number of devices, notably full speed and high speed. USB 2.0 by...
shouldn't the pin that selects the boot loader have a built in pull up? I thought it is not so smart to use a floating pin on all chips knowing that there are...
Hi All., For Power Mangement, Other than the Software What are the Cares should be taken in Hardware for LPC2138? (Like Pull-up resistor..etc) Any one done the...
Hello all, I´m trying to get debugging work. I built a Wiggler HW according to the schematica on this site. I´m using a board with an LPC2106 (Elektor). I...
Hi Martin, I use an old version but I verified that also the 1.27 does not implement the 0x04 record type (it is not a bug, only not implemented record type). ...
I suppose the Keil debugger is very reliable, atleast for simulation. Only limitation is, you can debug 16kb of code at a time. Also you can select the gcc...
Hi! Well, this is off topic from LPC's but here we go... As my boards get more and more crowded I want to look at 4 layer PCBs instead of my usual 2 layer...
Hi Friends, I am doing a Jtag Programming for SPARTAN FPGA using ARM. I just gone over the algoritham of XILINX JTAG programming. The algoritham is made into a...
Hello Stefano, can you try with latest version 1.29 ? You get it in the file area of http://groups.yahoo.com/group/lpc21isp/ Two days ago, this was implemented...
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