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Tuesday, December 12th 2017, 5:22pm

Author: djregan42

Use NXP's 'bare metal' SDK, follow instructions for 'hello_world' using JLinkGDBServer.exe, before using JLink.exe...

Nevermind. We got it working. We used the NXP 'bare metal' SDK (MCUXpresso SDK2.2 for i.MX 6ULL) with Segger JLinkGDBServer.exe, to load the 'hello_world' demo app (after building hello world with the build_ddr_debug.bat script). It turns out that it is possible to allow JLinkGDBServer.exe to preintialize the EVK RAM memory with 'hello_world' ready to run from RAM, and to keep JLinkGDBServer.exe running, while bringing up Segger JLink.exe ...and... using the 'loadbin' command to preinitialize an...

Tuesday, December 12th 2017, 4:36pm

Author: djregan42

[SOLVED] Using NXP mx6ull evk... Using JLink.exe, what are the recommended steps before using 'loadbin' command to load a program image?

Hello, Using a NXP mx6ull evk... with IMX6ULL Cortex A7 processor, 512 megabytes of RAM that begins at 0x80000000, what are the correct steps to guide JLink.exe through a 'loadbin' effort with a selected program memory image that we would prefer to execute from RAM? Currently, I am trying to load a bin image into 0x87800000 and am getting JLink.exe message "Writing target memory failed.". What JLink.exe preceeding steps should occur before it is possible to successfully use 'loadbin'? Thanks muc...

Tuesday, December 5th 2017, 5:38pm

Author: djregan42

Need to use AfterResetTarget() inside the jlinkscript file...

Hi Nino, Thanks much for your reply. I agree... it would be better to allow reset to guide the system back to a known state. I added this function definition to my script (attachment named 'ddr_init.jlinkscript')... int AfterResetTarget(void) { Report("'AfterResetTarget': Re-initializing..."); Clock_Init(); DDR_Init(); Report("'AfterResetTarget': Re-Initialized."); } [attach]2152[/attach] Although I do not observe the 'Report()' calls generating JLinkGDBServer console log messages... it does app...

Tuesday, December 5th 2017, 1:05am

Author: djregan42

Cannot execute monitor reset command after JlinkGDBServer is invoked...

All, FYI... I have found a sequence of steps that allows the program to execute successfully... While following 'Getting Started with MCUXpresso SDK for i.MX 6ULL Derivatives.pdf'... It it is necessary to skip steps 9.b, 9.c (do not use 'monitor reset' and 'monitor halt' during the gdb environment startup procedure). It seems as though command 'monitor reset' is clearing out initialization that was established by the necessary jlinkscriptfile See attached file 'do not execute step 9b.png'. [atta...

Monday, December 4th 2017, 5:18pm

Author: djregan42

[SOLVED] Using Segger GDBServer with mx6ull EVK, and getting message: "Unable to start core"...

Hello, We are developing with a NXP mx6ull evk (has IMX6ULL processor), and attempting to perform some 'bare metal' development with the Segger JLink Plus. NXP supports such development with a SDK called 'SDK_2.2_MCIM6ULL', which can be downloaded from NXP's site here... https://www.nxp.com/webapp/Download?colC…e&location=null Folks following instructions from this SDK are given instructions for installing required toolchains are provided within this download at path: '\SDK_2.2_MCIM6ULL\docs\Get...

Friday, September 29th 2017, 5:42pm

Author: djregan42

Use JFlash not JFlashSpi to flash IMX6ULL EVK's QSPI NOR Flash...

Hi Niklas, I apologize for not realizing JFlashSpi is not the Segger Utility I should be working with. Explains a ton. I tried JFlash, and observed it auto-detects the 32megabytes Nor Flash straight away. Read / Re-program works out-of-the-box (as you proposed). Appreciate it sir! --DJ Regan

Thursday, September 28th 2017, 11:02pm

Author: djregan42

[SOLVED] imx6ull evk QSPI NOR Flash program advice through JLink Plus...

Hello, I am looking for recommendations for example Jlink script / JFlash script files that could be used for starting points to be capable of reprogramming the NXP IMX6ULL's EVK's QSPI NOR Flash. The IMX6ULL EVK uses a Micron 32Megabytes QSPI Nor Flash. According to the schematic, it is part number... N25Q256A13EF840 According to Segger's James Murphy... https://youtu.be/avGTK4rKpZY?list=PLDqLs…Y7W4Sa8aWfL9-4G ...we should be able to start with an existing JLink/JFlash script file and modify it...

Friday, September 22nd 2017, 9:05pm

Author: djregan42

RDDI ManualInstallation...

Thanks sir! Found it... \Program Files (x86)\SEGGER\JLink_V620\RDDI\ManualInstallation.txt Appreciate it! --DJ

Thursday, September 21st 2017, 6:16pm

Author: djregan42

[SOLVED] Is it possible to use a Segger JLink Pro with ARM DS 5?

Hello Segger JLink Pro forum members... My question to this forum is...Is it possible to use the Segger JLink Pro with the ARM DS 5 development studio? Speaking to this s/w development suite... https://developer.arm.com/products/software-development-tools/ds-5-development-studio If 'Yes!'... does anyone know if Segger offers an application note for recommended settings to use with DS 5? Thanks much in advance, --DJ Regan