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ARM GDB debugging.

Started by premjithav in comp.arch.embedded12 years ago 13 replies

i'm a newbie in Embedded world. I need some clarification about the arm gdb debugging. 1. Is there any options to debug the board through...

i'm a newbie in Embedded world. I need some clarification about the arm gdb debugging. 1. Is there any options to debug the board through serial port ? how? 2. All search results about the arm debugging are related with some kind of external hardware and JTAG why? 3. I found results about gdb stubs for some non arm architecture. is there any stub for arm without a external hardware or JTAG...


Ration between MCU and JTAG/SWD clock (Cortex-M and others)?

Started by Uwe Bonnes in comp.arch.embedded8 years ago 12 replies

Hello, has anybody hard facts what the requirements for the ration between Jtag/SWD clock and MCU clock is. Main interest is for Cortex-M, but...

Hello, has anybody hard facts what the requirements for the ration between Jtag/SWD clock and MCU clock is. Main interest is for Cortex-M, but facts for other archs are welcome. Information floating aound in the net tells abound a factor of 6, but some people tell about successfull SWD communication even with a MCU clock much slower than the SWD clock. Thanks -- Uwe Bonnes ...


Trying to load GDT into a psycho-Pentium

Started by Ignacio G.T. in comp.arch.embedded20 years ago 14 replies

Hello everybody. I'm having problems trying to start up a new Pentium-based CPU. It has 8 MB of RAM (lowest addresses) and 8 MB of FLASH...

Hello everybody. I'm having problems trying to start up a new Pentium-based CPU. It has 8 MB of RAM (lowest addresses) and 8 MB of FLASH memory (highest addresses). I can load programs with a PC via JTAG into the FLASH (4 chips of 1Mx16, arranged as 1 Mibi of 64-bit words), and I can control the CPU with a Microtek JTAG-ICE (with no trace memory). I can start the programs, step by step...


JTAG port on MPC850 based router

Started by Clint Sharp in comp.arch.embedded20 years ago 4 replies

Hi All, I have a router that has had a flash ROM problem, to the extent that it gets stuck before it properly initialises (proven by ROM...

Hi All, I have a router that has had a flash ROM problem, to the extent that it gets stuck before it properly initialises (proven by ROM substitution) to a point where I can replace the corrupt contents. The router is MPC850 based and has a JTAG port on the board, can I use this port/BDM mode to read out a good ROM and re-flash the corrupted ROM? If not, can you point me in the direction...


High speed ARM debugger & programmer

Started by Chris Stephens in comp.arch.embedded18 years ago 1 reply

Computer Solutions is now supplying the Embest range of ARM Development tools. These include UNetICE, a low-cost, high-speed JTAG emulator for...

Computer Solutions is now supplying the Embest range of ARM Development tools. These include UNetICE, a low-cost, high-speed JTAG emulator for ARM processors, Debugging and Flash programming software to support it and a wide range of ARM Evaluation Boards. UNetICE connects the USB or Ethernet port of a PC to the JTAG interface of the ARM target board and allows flash programming and de...


Looking for Majic JTAG Cable schematic (CA-ARM20 / CK-ARM20)

Started by Anonymous in comp.arch.embedded15 years ago 2 replies

Hi, I am looking for a schematic/pinout diagram for the 20-pin arm cable (CA-ARM20 / CK-ARM20) used by this debugger. Does anyone have it? ...

Hi, I am looking for a schematic/pinout diagram for the 20-pin arm cable (CA-ARM20 / CK-ARM20) used by this debugger. Does anyone have it? If I am not mistaken it's a simble DB25 to 20-pin header cable. I can't find a pinout for the DB25 connector that connects to the jtag device. Could anyone do a trace using a multimeter and post a pinout diagram? Please help. Best regards, ...


Searching for JTAG Flash Programmer for ARM7 and AT29c040a

Started by Daniel in comp.arch.embedded20 years ago 10 replies

Hi there! Does anybody has a software which I may use for programming my flash device (AT29c040a) through the MCU's JTAG port? The MCU is...

Hi there! Does anybody has a software which I may use for programming my flash device (AT29c040a) through the MCU's JTAG port? The MCU is LH75411 from Sharp which has a ARM7-TDMI core. I have a wiggler and the macraigor's free OCD programmer in place. Both are working fine for programming the internal RAM of the MCU. For programming the flash device, the OCD programmer is obviously not...


Using ARM JTAG Instructions in Debug Mode to Read and Write Memory

Started by Neil Jacobson in comp.arch.embedded15 years ago

Hello Folks, I am writing what I thought to be a simple application to read and write memory using the ARM JTAG Scan Chain instructions. What...

Hello Folks, I am writing what I thought to be a simple application to read and write memory using the ARM JTAG Scan Chain instructions. What I am finding is that I can read and write registers without issue but whan I try to use system speed instructions (as required) to do the memory accesses - all hell breaks loose. My sequences are simple enough IR SCAN_N DR x10 (scan chain 1) ...


USB Cable for Programming Xilinx FPGA (Spartan 3)

Started by Anand P. Paralkar in comp.arch.embedded10 years ago 6 replies

Hello everyone, I would like to know if we can use a general purpose (available off-the-shelf at popular stores) USB to JTAG cable to program...

Hello everyone, I would like to know if we can use a general purpose (available off-the-shelf at popular stores) USB to JTAG cable to program a Xilinx Spartan 3 FPGA or does it *have to be* a cable (and box) specifically meant for programming a Spartan 3 FPGA (as shown on the Xilinx website)? I am hoping to hear from people who have actually used a general purpose USB to JTAG cable (...


PCI Parallel port card for JTAG / programming?

Started by ee_ether in comp.arch.embedded16 years ago 5 replies

Hi, I need a PCI parallel port card since the new PC is "legacy free". I use parallel port based JTAG debuggers and programmers for...

Hi, I need a PCI parallel port card since the new PC is "legacy free". I use parallel port based JTAG debuggers and programmers for micros (AVRs), CPLDs (Xilinx/Altera/Lattice) and FPGAs (Xilinx/Altera). Which PCI parallel cards work or don't work for you? Tried it under Linux? Seems like most PCI parallel cards are based on chipsets from Netmos -- any luck with these? Thanks.


msp430 jtag: does usb = parallel + par-to-usb cable?

Started by 4MLA1FN in comp.arch.embedded17 years ago 8 replies

i see usb JTAGs selling for ~$70. e.g. http://www.sparkfun.com/commerce/product_info.php?products_id=606 i'm wondering though is i could...

i see usb JTAGs selling for ~$70. e.g. http://www.sparkfun.com/commerce/product_info.php?products_id=606 i'm wondering though is i could get a parallel JTAG for $15: http://www.sparkfun.com/commerce/product_info.php?products_id=15 and combine it with a usb to parallel db25 cable for $5: http://tinyurl.com/2r97te will that work!?? thanks.


Stellaris development

Started by hamilton in comp.arch.embedded14 years ago 5 replies

Is there any free IDE/compiler/JTAG for the stellaris family ? Like the AVRStudio/WINAVR package ?? thanks, hamilton

Is there any free IDE/compiler/JTAG for the stellaris family ? Like the AVRStudio/WINAVR package ?? thanks, hamilton


JTAG and ICE difference

Started by Roman Mashak in comp.arch.embedded20 years ago 6 replies

Hello, All! I believe - there are a lot of professionals here. Could you please explain the differences between this...

Hello, All! I believe - there are a lot of professionals here. Could you please explain the differences between this debugging technologies? Or, please, provide me with documentation related to this topic. Thanks in advance! With best regards, Roman Mashak. E-mail: mrv@tusur.ru


JTAG interface connector for silab's C8051F33x-DK

Started by noem...@yahoo.com in comp.arch.embedded18 years ago 1 reply

Hi All, what connector do I need to use as debug connector ? can anybody point me to right one in mouser or digikey catalog? thanks.

Hi All, what connector do I need to use as debug connector ? can anybody point me to right one in mouser or digikey catalog? thanks.


newbie needs altera max jtag help...

Started by CDS in comp.arch.embedded18 years ago 1 reply

is there a way for me to read as well as rewrite my epm7064a altera max and the like for backup purposes? appreciate any help in...

is there a way for me to read as well as rewrite my epm7064a altera max and the like for backup purposes? appreciate any help in advance...thanks! chris


Emulators Philosophy

Started by Tom in comp.arch.embedded19 years ago 17 replies

What are the collective's opinions regarding the use of in-circuit emulators for proving safety critical embedded software? I've heard from...

What are the collective's opinions regarding the use of in-circuit emulators for proving safety critical embedded software? I've heard from some people that they can't imagine how it could be done without whereas others have never used an emulator and consider them entirely unnecessary. Has JTAG rendered emulators obscelete?


where to start with uCLinux

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

Hey guys i'd like to run uClinuc on my Arm device, how do i go about getting it on there, i have a dev board with the arm i wanna use with the...

Hey guys i'd like to run uClinuc on my Arm device, how do i go about getting it on there, i have a dev board with the arm i wanna use with the jtag programmer, Do i open up the source for uC in Keil, compile it and just flash it to the device? thanx :-) Xarion


AVR ISP mkII

Started by larwe in comp.arch.embedded17 years ago 3 replies

The mkII ISP cable has a 10-pin 100 mil (5x2) footprint that looks suspiciously like an unpopulated JTAG header. Is this for programming the...

The mkII ISP cable has a 10-pin 100 mil (5x2) footprint that looks suspiciously like an unpopulated JTAG header. Is this for programming the on-board mega128 chip, or can it be used to connect to a target? Thanks.


beginner and 8051

Started by Anonymous in comp.arch.embedded18 years ago 21 replies

Hi All, I'm a beginner and I'd like to start from 8051 . as I can see-the only cheap boards with jtag are from silabs, right? there are a few of...

Hi All, I'm a beginner and I'd like to start from 8051 . as I can see-the only cheap boards with jtag are from silabs, right? there are a few of them for about 70$ , which one should I buy? will I be able easily move my code to other 8051 mcu like ats89s? thanks.


Open OCD and Freescale MPC5xx

Started by crowsfoot in comp.arch.embedded13 years ago

Can anyone advise me if I can use OpenOCD with JTAG Key to read and write code to embedded MPC5XX using the BDM port. Or an alternative...

Can anyone advise me if I can use OpenOCD with JTAG Key to read and write code to embedded MPC5XX using the BDM port. Or an alternative that provides an API library to develop a bespoke application. --------------------------------------- Posted through http://www.EmbeddedRelated.com