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If broken firmware J-Link...

If broken firmware J-Link...

 


jtag

 

Once I upgraded Keil and he gleefully reported that you need to

update the firmware of J-Link, and when you update an error occurred, the device came badness. A cursory inspection showed that I had at that time was a package from the SEGGER version 4.92, but Keil was a library version 4.96. Anyway in my arms was pretty useless plastic box which is not detected by the system.

Open the programmer and easily find not unsoldered jumper ERASE and TST.

 

.

 jtag ремонт

 

 

Before flashing, these jumpers normally solder.

 


перемычки jtag

 

Switch the device to download mode of the firmware. For this need to do next:

 

- disable USB and put jumper on ERASE

- connect the USB, wait a few seconds

- disable USB, remove jumper ERASE, and put on the TST

- connect USB, wait 10 seconds

- disable USB, remove jumper TST

 

So we cleared the memory of the chip and restored the boot loader. When you connect the device to your computer, the system should appear a COM port.

Download and install the package AT91-ISP website atmel.com

Replacement port driver installed by default, on driver lying in the folder: C:\Program Files\ATMEL Corporation\AT91-ISP v1.13\sam-ba 2.9\drv "atm6124.sys ATMEL AT91xxxxx Test Board"

(for Windows 8 you want to disable digital signature verification of drivers).

Start Sam-ba to make sure everything works.

 


sam-ba

Now we need only flashing J-link. Start SAM-PROG. Select the firmware file and click "Write Flash" or ticking the mark "Auto-mode" connect the device.

 


ремонт jtag

 

Downloaded from segger.com actual package for J-Link (at the time of this writing v4.98) and install it.

 

Connected J-Link and updated the firmware on it regular means.

Correct serial number of the programming device by running the command in J-Link Commander: exec setSN=<your serial number>.

 

The programming device is ready to work.

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