ccs unable to access registers during debugging

Hi Arun,

What is the error message you are getting? Sometimes at CCS you are unable to debug into a C function because the file where the C function was declared is not included at the Project View.

- kel

Hi Kel,
I want to use push buttons available on the launchpad,i am not able to configure. so went for realtime dubugging feature where when i press the button there will be change in the io line which is not there.


Regards
Arun j

Can you share the code you are using? And explain what you are attempting to do.

Glenn.

Arun,

You will not need to access registers to work with the buttons in the LaunchPad.

If you don't mind working with TI-RTOS, I have example code which shows how to use the buttons with the CC3200. If you look at startproject.c the button is used to switch between Station and Access Point modes. Check out my Starter Project here - github.com/.../startproject_cc3200_ti-rtos

Glenn.

Hi Glenn,
I want to toggle the led present in the launchpad without using tiPinmux ,soI want to access GPIO registers which i am not able to find in ccs.
Regards
Arun j

Hi Arun,

Before you access peripheral registers, you need to enable the peripheral clock using PRCMPeripheralClkEnable() API.

Can you please confirm if your code does this call.

Pasting the code snippet (generated by TI Pinmux utility) from the blinky example :

PinMuxConfig(void)

{

   //

   // Enable Peripheral Clocks

   //

   MAP_PRCMPeripheralClkEnable(PRCM_GPIOA1, PRCM_RUN_MODE_CLK);

   //

   // Configure PIN_64 for GPIOOutput

   //

   MAP_PinTypeGPIO(PIN_64, PIN_MODE_0, false);

   MAP_GPIODirModeSet(GPIOA1_BASE, 0x2, GPIO_DIR_MODE_OUT);

   //

   // Configure PIN_01 for GPIOOutput

   //

   MAP_PinTypeGPIO(PIN_01, PIN_MODE_0, false);

   MAP_GPIODirModeSet(GPIOA1_BASE, 0x4, GPIO_DIR_MODE_OUT);

   //

   // Configure PIN_02 for GPIOOutput

   //

   MAP_PinTypeGPIO(PIN_02, PIN_MODE_0, false);

   MAP_GPIODirModeSet(GPIOA1_BASE, 0x8, GPIO_DIR_MODE_OUT);

}

Thanks and Regards,

Praveen

Hi Praveen Kumar

Yes I have enabled the peripheral clock using PRCMPeripheralClkEnable() API using TI pinmux utility.can u  explain how to initialise launchpad Push buttons,how do i get interrupt for the button press

Regards

Arun

Arun,

So are you able to read the GPIO peripheral register space now ?

For configuring GPIO for interrupts please refer to 'email' SDK example which uses the on board push buttons

Thanks and Regards,
Praveen

Praveen Kumar,
I am not able to find how to read GPIO peripheral register space . I am using ccs.


Regards
Arun j

Arun,

Once you get connected to the target CC3200, you can go to view->Memory Browser and type in the address of the register you want to read/write

Thanks and Regards,
Praveen

Arun,

Is this issue now resolved? If yes please press the verify answer button to close this thread.

Thanks and Regards,
Praveen

Praveen,

I am able to type the address of the register but i am not able to modify the value at that address.

Regards
Arun

Arun,

Which address are you trying ? Can you please post here a screenshot of you memory window ?

Thanks and Regards,
Praveen

Praveen,

can u please tell me when i dump the code into cc3200 where does it get stored.?

Hi Arun,

Its depends on the linker script. If you are using the default (cc3200v1p32.cmd) linker script your program gets loaded to SRAM address starting at 0x2000_4000.

Is you previous issue resolved ? You mentioned in your previous post that you were not able to write to some register address, can you pls provide me the details.

Thanks and Regards,
Praveen

Hi Praveen ,

I cant change the value at the address g_UcLED2pin.

Regards

Arun j

Hi Praveen,

can u please tell me what are the steps to be followed inorder to load the program into ROM.

Arun,

From the above image looks you are trying to write into CC3200 ROM (address 0x0000_0000).

UcLED2pin from gpio_if.c doesn't holds any register address.

If you want to modify any peripheral register manually please use the absolute register address with the memory window, not variable name.

Thank and Regards,
Praveen

Arun,

You can't load you program into ROM. Did you meant flashing the code into sFlash ?

Thanks and Regards,
Praveen

Praveen,

Ya flashing the code into sFlash.

Regards
Arun j

Arun,

Please refer to processors.wiki.ti.com/.../CC31xx_%26_CC32xx_UniFlash_Quick_Start_Guide

Thanks and Regards,
Praveen