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Overclcok AtmegaL

Started by eeh in comp.arch.embedded18 years ago 13 replies

Hi, I am going to overclock Atmega16L to 12MHz. I can do that when the JTAG header is attached. However, when it is detached, the program...

Hi, I am going to overclock Atmega16L to 12MHz. I can do that when the JTAG header is attached. However, when it is detached, the program seems to be not working. I have tried to shut down the power of the emulator and it still works when the JTAG header is attached. I do not understand why this strange case happens. Could anyone talk to me why this happens? As I need to use 3.3V, I need t...


PXA255 Good Emulator Wanted

Started by Jose Luis Marchetti in comp.arch.embedded19 years ago 7 replies

Hi, I am using a JTAG based emulator, but as I could see the JTAG emulator can not give what we want when we are looking for very complex...

Hi, I am using a JTAG based emulator, but as I could see the JTAG emulator can not give what we want when we are looking for very complex bugs, it has a limited trace buffer and we can not set watch pointers, etc... The conclusion is that we have to have a better tool, but it is being difficult to find something out there, what amazing me, because the PXA is largelly used. I thought in...


gnuarm + JTAG?

Started by Jan Brittenson in comp.arch.embedded18 years ago 1 reply

What JTAG flash programmer and inline debugger should I buy to use with gnuarm on linux (fc4)? Reflashing is more important than debugging (I...

What JTAG flash programmer and inline debugger should I buy to use with gnuarm on linux (fc4)? Reflashing is more important than debugging (I can always use gdbserver over a serial port). Preferably using USB or ethernet -- the Embest C3 seems to fit the bill, but I don't know if it can be made to work with gnuarm.


Inexpensive JTAG adapter for STM32 / IAR ?

Started by Roberto Waltman in comp.arch.embedded13 years ago 9 replies

As subject line says - Can anybody recommend a (cheap) JTAG adapter that works well with IAR EWARM and ST Cortex M3 chips? Trying not to buy...

As subject line says - Can anybody recommend a (cheap) JTAG adapter that works well with IAR EWARM and ST Cortex M3 chips? Trying not to buy another Segger ... Thanks, -- Roberto Waltman [ Please reply to the group. Return address is invalid ]


USB AVR JTAG Programmer without the studio needed

Started by Chris_99 in comp.arch.embedded15 years ago 1 reply

Does the CAE know of a dongle+stand alone windows app that I can give my customer to flash AVR via JTAG? I don't want them to have to load the...

Does the CAE know of a dongle+stand alone windows app that I can give my customer to flash AVR via JTAG? I don't want them to have to load the studio. Just a small app Thanks Chris


trying to understand JTAG

Started by Kristoff Bonne in comp.arch.embedded10 years ago 17 replies

Hi all, After having played around with a MSP430 on a TI launchpad, I got interested in onchip debugging. (the TI-launchpad has a spy-by wire...

Hi all, After having played around with a MSP430 on a TI launchpad, I got interested in onchip debugging. (the TI-launchpad has a spy-by wire interface which works quite nicely) In the mean time, I have a AVRdragon to play with AVRs using debug-wire and I have also ordered a pickit3. While using the dragon, I got curious about that JTAG-connector on that board, so I started l


[ARM7] MAC7100 and JTAG

Started by Piotr in comp.arch.embedded17 years ago 8 replies

Hi, Where can I find a schematic of JTAG interface for MAC7100 (ARM7DMI)? I would like to programming this uC, but I can't find free...

Hi, Where can I find a schematic of JTAG interface for MAC7100 (ARM7DMI)? I would like to programming this uC, but I can't find free programming tools. Thanks in advance. -- Piotr Piwko


JTAG Emulator

Started by vic in comp.arch.embedded20 years ago 2 replies

Hello everybody, could someone explain to me what a JTAG Emulator is and what is used for? Thanks in advance.

Hello everybody, could someone explain to me what a JTAG Emulator is and what is used for? Thanks in advance.


JTAG programming the NXP LPC23xx

Started by Gustavo Vargas in comp.arch.embedded14 years ago 6 replies

Hello, I'm starting a new code for an already developed hardware using a LPC2387, normally I use units from ST it's the first time I write...

Hello, I'm starting a new code for an already developed hardware using a LPC2387, normally I use units from ST it's the first time I write code for NXP and I'm impressed with the documents available... they are really bad or I'm looking in the wrong place.... well, for manufacturing reason I must to use a JTAG like the one we have in our plant, normally I write the script of it to work wit...


Booting ATMEGA2560

Started by ratemonotonic in comp.arch.embedded16 years ago 3 replies

Hi all , I have just designed a board with a JTAG interface and ISP interface ( with some good advice from past discussions on this forum)and...

Hi all , I have just designed a board with a JTAG interface and ISP interface ( with some good advice from past discussions on this forum)and have also bought the JTAG programmer. Now before I send the board for layout , I am looking at the nitty gritty of bootloading a hello world programme ( flashing leds!) on it. Does the ATMEL parts come preprogrammed with a standard bootloader in the...


Moooore advice

Started by Jannie du Preez in comp.arch.embedded16 years ago 2 replies

Hello everyone, We are just starting off here and need a little advice, It seems that as far as a GNU debugger programmer for ARM9 is...

Hello everyone, We are just starting off here and need a little advice, It seems that as far as a GNU debugger programmer for ARM9 is concerned the OpenOCD system is the way to go, for this you need a DLC5 Jtag cable or equivalent, How slow is the DLC5 Jtag cable in practise, is it usable or will it frustrate me? Does any one have a Gerber file or a eagle board layout/Schematic for a ...


FT2232C and MPSSE

Started by db in comp.arch.embedded20 years ago 9 replies

I sent this message to FTDI, but have not received a reply. Maybe someone here can answer this question. I have built a board using the...

I sent this message to FTDI, but have not received a reply. Maybe someone here can answer this question. I have built a board using the FT2232C where I am using the MPSSE mode for JTAG. The FT2232C is being interfaced to an LPC2119. Specifically I am using the bit commands 0x4E and 0x6E to send and receive data from a JTAG interface. I am noticing that when I use the 6E command to read dat...


JTAG pause and resume ?

Started by otaku in comp.arch.embedded17 years ago 1 reply

Hi All. I've hacked together a bit of flashing code across JTAG on ARM920T - very simple stuff using a semaphore to indicate a service...

Hi All. I've hacked together a bit of flashing code across JTAG on ARM920T - very simple stuff using a semaphore to indicate a service request. It all seems to work seamlessly ( at least for the copy code ), and it resumes execution properly after each block of data. Unfortunately, once it leaves the "copy" code I hit a snag : PC becomes corrupt. I'm currently thinking I've mucked up t...


XPLA3 coolrunner programming tool?

Started by Didi in comp.arch.embedded14 years ago 17 replies

Some time ago I managed to get (under NDA) the programming info from Xilinx so now I can program one of their coolrunners via JTAG with...

Some time ago I managed to get (under NDA) the programming info from Xilinx so now I can program one of their coolrunners via JTAG with my toolchain (the CPLD on this design is reprogrammable over the net, i.e. the board CPU does its JTAG access etc.). I am now getting to what should be the easy part - writing the CPLD source to produce some (very simple) logic in a jedec file, after wh...


New board JTAG error

Started by Anonymous in comp.arch.embedded17 years ago 1 reply

Hello every one, We have designed a board which contains an ALTERA fpga and an EPROM(EPC2LC20).The design is...

Hello every one, We have designed a board which contains an ALTERA fpga and an EPROM(EPC2LC20).The design is done with respect to some existing reference schematics.We have populated our PCB so as to get the power to all the components and then we have placed the components making up the JTAG circuitary along with the FPGA and EPROM. ...


XDS510 USB JTAG Emulator

Started by Anonymous in comp.arch.embedded18 years ago 2 replies

I found this store from eBay and purchased an XDS510 USB JTAG Emulator recently, it works well and the key is it's cheaper than others....

I found this store from eBay and purchased an XDS510 USB JTAG Emulator recently, it works well and the key is it's cheaper than others. Just recommend and hopefully it's useful. Good luck! http://stores.ebay.com/Embedded-Development-Tools


MCU dead due to bad code?

Started by Anonymous in comp.arch.embedded18 years ago 9 replies

Hi everybody! I have some trouble with the OKI 675001: I'm using this part now for about 3 month, debugging and programming an extern Flash...

Hi everybody! I have some trouble with the OKI 675001: I'm using this part now for about 3 month, debugging and programming an extern Flash (AM29LV320) via JTAG. Never had any problems. Now after changing the code and burning it as usual into the FlashROM the MCU is no longer responding to JTAG. Furthermore no activity on the MCU bus. OK, i thought that some ESD distroyed the MPU and took a ...


ISP and JTAG Headers for AVRs

Started by ratemonotonic in comp.arch.embedded16 years ago 2 replies

Hi all , I am new to AVRs , and I am stuck at trying to select the correct connectors for the target board to properly connect to JTAG ICE...

Hi all , I am new to AVRs , and I am stuck at trying to select the correct connectors for the target board to properly connect to JTAG ICE mkII and AVR ISP mkII. Unfortunately cannot find any reference on atmel docs about the connector dimension etc. For ppl who have already done this before it will be a piece of cake ! would it be possible to get some part numbers , any info. BR Rat...


JTAG debugger recomendations

Started by Markus Zingg in comp.arch.embedded18 years ago 11 replies

Hi Group I'm in the business of shopping a new JTAG debugger and would like to hear what other people recommend. Important points for me...

Hi Group I'm in the business of shopping a new JTAG debugger and would like to hear what other people recommend. Important points for me are - support for multiple target CPUs - stable operation - ease of use - good support from the debugger company - support for the GNU toolchain - what other criterias should I look for? The targets I'm likely needing support for will be ARM and Po...


Emulating JTAG with micro for programming PROM

Started by Anonymous in comp.arch.embedded18 years ago 13 replies

First off I am new to JTAG emulation. I am required to program a Xilinx configuration PROM from a microcontroller. I realize that I...

First off I am new to JTAG emulation. I am required to program a Xilinx configuration PROM from a microcontroller. I realize that I can program the PROM with a cable from the parallel port but the product will require field upgrades. I've been sifting through docs from Xilinx and searching the web, and it seems like this should be easy and straight forward to implement. What I have learn...



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