CCS/TMS320F28379D: Using clock on GPIO pin to work with external ADC

Are there any examples that are using the XCLKOUT pin? I am trying to figure out how to set it up. Sorry for delayed reply but end of semester and final exams are taking up most of my time.

Currently we don't have an example, but this is fairly straight forward and could be achieved with just  a few lines of code. (Refer section 3.7.4 in SPRUHM8H)

I am very new to working with this device and I have read the part in the manual for how it is to be done.

"It is sometimes necessary to observe a clock directly for debug and testing purposes. The external clock output (XCLKOUT) feature supports this by connecting a clock to an external pin, GPIO73. The available clock sources are PLLSYSCLK, PLLRAWCLK, CPU1.SYSCLK, CPU2.SYSCLK, AUXPLLRAWCLK, INTOSC1, and INTOSC2. To use XCLKOUT, first select the clock source via the CLKSRCCTL3 register. Next, select the desired output divider via the XCLKOUTDIVSEL register. Finally, connect GPIO73 to mux channel 3 using the GPIO configuration registers."

However, being a novice and not knowing what a lot of the stuff in the manual means. Where would be the best place to start to learn the device? I have downloaded the workshop material and have been going through it. I have also performed basic programs to use interrupts and set up pins to output or input as desired. Thanks again for all the help you have provided.

I am currently trying to set up the XCLKOUT and have been trying to use 

ClkCfgRegs.CLKSRCCTL3 to set up the clock source and ClkCfgRegs.XCLKOUTDIVSEL to set the division of the clock.

When I build the code it says ClkCfgRegs is undefined so I think my compiler is messed up 

My include options can be found below. 

${COM_TI_C2000WARE_SOFTWARE_PACKAGE_INCLUDE_PATH}
${PROJECT_ROOT}
${PROJECT_ROOT}/device
${C2000WARE_DLIB_ROOT}
${CG_TOOL_ROOT}/include

I tried to correct this by copying the blinky project and pasting my code in it to avoid compiler include issues. However, it did not correct the problem.

I was able to scrap all my Lab 5 files and import the solution files and get them working. I was finally able to get the headers works sort of. I got it to use the #include "F2837xD_device.h" from the lab files. That brought in a lot of warnings to the project.

This is the code I am trying to use to get the XCLKOUT to work for testing.

Device_initGPIO();

//GPIO_SetupPinMux(73, GPIO_MUX_CPU1, 3); // GPIO73, CPU1 is master, mux position 3 for XCLKOUT
GPIO_setPadConfig(73, GPIO_PIN_TYPE_STD);
GPIO_setPinConfig(GPIO_73_XCLKOUT);
GPIO_setDirectionMode(73, GPIO_DIR_MODE_OUT);
GPIO_setQualificationMode(73, GPIO_QUAL_SYNC);

EALLOW;
ClkCfgRegs.CLKSRCCTL3.bit.XCLKOUTSEL = 0;
ClkCfgRegs.XCLKOUTDIVSEL.bit.XCLKOUTDIV = 0;
EDIS;

If I don't import the "F2837xD_device.h" it is undefined in the project and if I do include it it generates a lot of warnings. It is also not generating a clock signal on GPIO pin 73 so I don't think it's working anyways. 

Thanks for all the help I appreciate it. 

Good Morning Ken,

I modified the GPIO.c file to have the lines

GpioCtrlRegs.GPCGMUX1.bit.GPIO73 = 0;
GpioCtrlRegs.GPCMUX1.bit.GPIO73 = 3;

I then added the lines

EALLOW;
ClkCfgRegs.CLKSRCCTL3.bit.XCLKOUTSEL = 0;
ClkCfgRegs.XCLKOUTDIVSEL.bit.XCLKOUTDIV = 0;
EDIS;

Do I want the eallow lines in the same GPIO.c or do I want to add those in the Main_5.c file?

When I run the code I am getting a high signal from pin 73 but not a clock signal I am expecting.