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  • Hi Nino, Thank you very much for the fast reply. I've already been using RTT for some time in the various projects but unfortunately, this one needs UART. Such unusual baudrate was chosen because of the clock configuration rather than for pure throughput. I wonder if it's possible to unblock higher baudrates using different software? I highly doubt I will be sending more than a few kb/s of data via UART. The thing that bothers me is why J-Link keeps disconnecting? Any ideas? I will try to do the…

  • Hi, I've recently encountered some problems with J-Link VCOM using higher baudrates. The custom board I use needs 1250000 baud which is rather unusual but nevertheless, another ordinary USB/Serial converter seems to not have any problems with it. Every time I'm trying to open the connection using specified baudrate(1250000) J-Link disconnects from Windows' device manager. It happens no matter what serial terminal I'm using(tested on Putty, SmarTTY, TeraTerm, and so on). I wonder if there are any…

  • Hello, Thank you very much for investigating the problem and providing answers. It looks like I will have to dig in it a little bit more and probably ask on GDB support forum. Once again thank you for your time. Have a nice day! Mateusz Piesta

  • Hello, As you suggested I updated J-Link software to the newest one, 6.48b, unfortunately upgrading did not change anything. I also bumped up interface speed to 16MHz which indeed made programming process a little bit faster. J-link still splits firmware to small chunks, though. I've attached SDRAM init script, it was taken from RT1051 SDK and slightly modified for SDRAM that we are using: AS4C8M16MSA-6BIN. I've info that init script that I provided was successfully used on RT1051EVK hence I ass…

  • We are facing some issues with slow download rates on our custom board based on RT1051 uC. Downloading ~1,6Mbytes of data into ext SDRAM can take as long as ~45s. Current hardware configuration: - Manjaro Linux - NXP RT1051 - exe code and data are mostly located in ext SDRAM - some data is located in internal RAM Memory region Used Size Region Size %age Used SRAM_OC: 0 GB 64 KB 0.00% SRAM_DTC_TEXT: 0 GB 24 KB 0.00% SRAM_DTC: 380436 B 424 KB 87.62% BOARD_SDRAM_TEXT: 1589652 B 4 MB 37.90% BOARD_SD…

  • Hello, I've been using Segger utilities on Windows for some time but few days ago I decided to switch to Linux and this is where problems started to arise. I'm using Eclipse CDT with ARM plugin. With this setup i am able to debug/program and step trough code without any problems. What bothers me is fact that RTT Client can't connect to my debug session, it never change status to 'Connected'. It constantly keep saying "###RTT Client: Connecting to J-Link RTT Server via localhost:19021 ..." and th…

  • Hello again, Tried to connect external J-Link to disco board but without luck. I still get message saying : "Connecting to target...WARNING: Identified core does not match configuration. (Found: Cortex-M3, Configured: Cortex-M7)". Internal st-link has been updated to J-link OB. Any clues ? Are you sure it will work on disco board ? I'm pretty sure that connection is alright. Best regards, Mateusz

  • Thank you Nino for quick response. As you suggested I replaced ST-link firmware with Segger OB and it works !. Tomorrow I will check if it's working with external J-link. Once again thank you for help ! Best regards, Mateusz

  • Hello, I would like to ask if anyone tried to use external J-Link to debug/program STM32F769Disco devboard ? I'm trying to connect J-link through external CN4 connector but without luck. J-link keeps recognizing uC as CortexM3 instead of M7. Maybe internal STLink connections somehow making problems ? I changed CN3 jumper to UsbHost position and I am powering board through USB HS connector. Any ideas ?