Porting to ARM LM3S811, Elemental IO PWM issues

Question

Hi all,
Ok, so very quickly I resume what I have done:
- The LM3S811: http://www.luminarymicro.com/products/ekk-lm3s811_evaluation_kit.html
- I used the LM3Sxxxx Generic template to create one for
the LM3S811 as instructed in the porting guide for other ARM controllers using
Labview for ARM module, the simple guide.
- I got to compile a test application and run it
successfully on my new target.
- I then used the Elemental I/O wizard to create the
necessary files based again on the LM3S8962 in the generic folder of LM3Sxxxx.
Both boards share almost all the same IOs, I only changed the PWM 0 and 1 to
use port D instead of B, PWMs 2 to 5 share the same ports, so I didn t changed
them.
- I tested some of the AIOs the GPIOs, and I even got the
OLED display driver from luminary to work.
Now, if I use PWM 2 to 5 they work fine, but if I use 0
or 1, my application will freeze as soon as the Elemental IO node is called in
my program when running on the target.
Am I missing something?
Thx
Lukasz
Solved!
Go to Solution.

Answer 1

Close LV                                                                     
1. Copy LM3Sxxxx folder and rename the folder to CAN_LUM_Board_LM3811 (Or whatever you wish your target to be called).
    a.    This folder is in: C:\Program Files\National Instruments\LabVIEW 2009\Targets\Keil\Embedded\RealView\Generic
2. Modify TgtSupp.ini
    a.    Change the target name to CAN_LM3S811 (whatever you want)
    b.    Change the description to Luminary Micro CAN_LM3S811 (whatever you want)
        [Target]
        name = CAN_LM3S811
        description = Luminary Micro CAN_LM3S811
        eiodirectory = eio
    To add the new target to your project
    a.    Open LV and add target by right-clicking on your project name and New Targets and Devices menu.
    b.    Select the option "Other".  You will get a new dialog so you can select the target you just added above.
3. To target small memory microcontrollers you must use the microRTX operating system(LabVIEW ARM uses the full RTX OS as default).  You will also need to edit a function in the code generation of LabVIEW. This is a global edit, so it also changes all targets.  I found that LabVIEW ARM product seems to still work fine with this global edit on the LM3S8962. In the file headless.c comment out the function exit (0) as shown in line 93.
        C:\Program Files\National Instruments\LabVIEW 2009\CCodeGen\libsrc\os\common
4. The way LV ARM works is that it takes the target template in the folder at: C:\Program Files\National Instruments\LabVIEW 2009\Targets\Keil\Embedded\RealView\Generic\CAN_LUM_Board_LM3S811 and copies it to the folder where you define your LV project and VI’s.  LV ARM and the KIEL tools then edit these new files for your end application.  As such, we need to edit the template file in the main LV folder so it uses the microcontroller you wish selected.  Open the file LabVIEW.Uv2 in the folder C:\Program Files\National Instruments\LabVIEW 2009\Targets\Keil\Embedded\RealView\Generic\CAN_LUM_Board_LM3S811\Template\Pro ject with the KEIL IDE tools
    a.    Select the LM3S811 Microcontroller.
    b.    Xtal= 6Mhz
    c.    Enable micolib to reduce memory needs for such a small part.
    d.    In Debug and Ytilities, change to Use "Luminary Eval Board"
5. Change Heap size to: "Heap    EQU     0x00000200" in "Startup.s" (Not sure but if not using debugging it can be set to zero)
6. Edit "LM3S_Pins.c" line34 to : "#define PART_LM3S811" and "ARM_Serial.c" line 24 to : "#define PART_LM3S811"
In LV
1. Import eio's from the \generic\LM3sxxxx\eio\LM3S8962
    a. Change PWM 0 and 1 to use port D instead of B
2. Disable debugging, not enough RAM for it.
Thx to gregc
Have fun!