Run from flash without debugger/jtag problem

Simon Therriault

Other Parts Discussed in Thread: CONTROLSUITE

Hi,

I've been developing an algorithm in the CLA of a F28035 and everything works when running in release, in flash with a XDS100V3 plugged in to monitor variables in real-time.

I now wanted to run some tests over time to confirm everything was working. I just unplugged the computer, the xds100v3 and put the power on. Leds indicating internal states, PWM outputs and Tripzones all worked fine. The only thing is that the algorithm just diverged and it finally tripzoned... Then, I took the guide explaining everything needed to work from Flash and pretty much had everything. I initialized all variables to make sure it wasn't something related to that. I removed all the warnings from my project. I confirmed the CLA ISR period. A big percentage of the systems seem to be working fine but something is wrong...

If anybody has an idea as to what could cause that, it would be greatly appreciated.

Thanks!

over 13 years ago

0 Lori Heustess over 13 years ago

TI__Guru* 92780 points

Make sure the CLA clock is turned on. When you have a debugger connected this is done by the debugger so you can step the CLA. Stand-alone you need to do this in the code. In our examples it is done in the system setup:

EALLOW;

......
SysCtrlRegs.PCLKCR3.bit.CLA1ENCLK = 1; // CLA1
......

0 Simon Therriault over 13 years ago in reply to Lori Heustess

Intellectual 700 points

Hi,

Yeah I can confirm the CLA is enabled and running. Some of the initialization is done in the CLA and I confirmed it works. It's when one of the algorithm pops in that something bad happens. I'm using the CLAMath library, maybe it's badly used... I guess to debug correctly I'll have to output data using comm links.

0 Simon Therriault over 13 years ago in reply to Simon Therriault

Intellectual 700 points

Hi,

I continued my research and the problem is the CLAMath calls I make. For example, CLAsin constantly returns bad values ( 14, -2041, etc... ). The debugger must setup some stuff that aren't done when ran standalone. I'll check my linker file, library and see what could be the problem. If anyone encountered this, feel free to let me know!

Regards,

0 Lori Heustess over 13 years ago in reply to Simon Therriault

TI__Guru* 92780 points

Simon Therriault said:
CLAMath calls I make. For example, CLAsin constantly returns bad values ( 14, -2041, etc... ).

Simon,

Make sure the CLA math functions and tables have a load address in Flash and a run address in CLA accessable memory. Also make sure they were copied to the appropriate CLA memory. The CLA won't be able to execute these from flash.

Cheers

Lori

0 Xianglong Jiang over 13 years ago in reply to Simon Therriault

Prodigy 10 points

I have encountered the same problem, and I guess the v400 CLAmath.lib has some bugs. Did you solve this problem?

Regards,

0 Simon Therriault over 13 years ago in reply to Xianglong Jiang

Intellectual 700 points

Hi,

Yeah I solved it looking at other examples. You need stuff in the linker setting the memory location of CLA1mathTables. Look in "controlSUITE\device_support\f2805x\v100\F2805x_common\cmd\28055_CLA_C_lnk,cmd" and you'll see an example. After this, you need to memcopy from flash to ram with something like :

MemCopy(&Cla1mathTablesLoadStart, &Cla1mathTablesLoadEnd, &Cla1mathTablesRunStart );

Hope this helps!

0 peter shi over 12 years ago in reply to Simon Therriault

Prodigy 60 points

CLAsin function can run normally in the debug mode. why doesn't it run in the general mode?

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Run from flash without debugger/jtag problem