TM4C123GH6PM PLL SIMULATION IN uVision4

Hello Supreeth,

Why are you using a simulator when the actual devices are available?

Regards
Amit

There are 2 reasons for this

1) I don't have a Logic Analyzer or some sort of equipment to measure the time period from an actual device

2) I would like to cross check everything in simulation before downloading it to an actual hardware. 

Sorry I forgot to attach the PLL initialization code

Hello Supreeth

The actual code is more complicated than what you have shown. And the SysCtlClockSet API for TM4C123 is proven in production.

Regards
Amit

Actually I was taking a course from edX (www.edx.org/.../embedded-systems-shape-world-utaustinx-ut-6-03x). Most of the examples including the PLL Example depends on an external DLL called LauchPadDLL. When I inserted the DLL in Debug parameter column along with -pCM4, the code gave expected result in Logic Analyzer. But it doesn't work without the DLL. As per my knowledge the DLL simplifies most of the tasks like editing the memory MAP for peripheral as read write, creating alias for Logic Analyzer pin names etc. So I think I am missing something in configuration part. The problem can be solved in 3 ways

1) By adding the external DLL in configuration options
2) Using SysCtlClockSet API
3) Finding the actual reason behind the problem

But I believe that finding the reason behind these types of problems will be a good learning experience. So I would prefer the last choice. Thanks in advance.

Hello Supreeth

I think you should post to keil on why the simulation model is not working,

Regards
Amit

Hello Amit,

Sorry for the late reply. I will post a message in Keil forum as well.

Hello Supreeth

In the meantime you can move away from Simulation mode to actual device mode

Regards
Amit

In the meantime you can move away from Simulation mode to actual device mode

I think the OP doesn't comprehend the Keil uVision "simulation" feature.

It does not simulate specific MCUs, let alone vendor-specific peripherals. It only provides a generic Cortex M core, without any (non-ARM) peripherals. At least that was the case last time I checked.

So no way to test those features with this simulation !

Hello f.m.

Yes, I do not understand the use of simulation feature when the device is available.

Regards
Amit

Yes, I do not understand the use of simulation feature when the device is available.

Yes - me neither.

The features (and non-features) of the simulation target are well documented in uVision. The OP should have noticed this ...

Knowing one's tools requires, "RTFM" - that discipline (for many) has departed.

Simple LED may provide (some) indication of PWM duty cycle. RGB Led's "color shift" - when driven by 3 distinct PWM signals - may overcome the lack of (real) test gear...