TMS320F2800157: The example code provided FOR COMPARATOR ''CMPSS'' with C2000 microcontroller for TMS320F2800157 is not working.

sayan Sarkar

Part Number: TMS320F2800157
Other Parts Discussed in Thread: C2000WARE

Tool/software:

The example code provided FOR COMPARATOR ''CMPSS'' with C2000 microcontroller for TMS320F2800157 is not working.It is not also showing the PWM .The signals can be observed from GPIO 4 and 13.Please suggest what modifications are needed in code.

3 months ago

0 Hadi Moradisizkoohi 3 months ago

TI__Expert 6150 points

Hello,

Thanks for brining this into my attention.

What version of C2000ware are you using?

Regards,

Hadi

0 sayan Sarkar 3 months ago in reply to Hadi Moradisizkoohi

Prodigy 30 points

Hi,

I am using C2000Ware_5_02_00_00.

Regards,

sayan

+1 Hadi Moradisizkoohi 3 months ago in reply to sayan Sarkar

TI__Expert 6150 points

Saya,

If you have these two lines of code after Board_init() you should be able to see the output.

    GPIO_setPinConfig(GPIO_13_EPWM7_B);
    GPIO_setAnalogMode(13U, GPIO_ANALOG_DISABLED);

Can you check the value of two registers AGPIOCTRLA.GPIO13 and GPAAMSEL.GPIO13, and let me know?

Regards,

Hadi

0 sayan Sarkar 3 months ago in reply to Hadi Moradisizkoohi

Prodigy 30 points

Hi Hadi,

Thanks for your assistance.

This resolved my issue .I am getting the output waveforms.

The value of GPAAMSEL.GPIO13 is 0.

Although I am not able to check the value of AGPIOCTRLA.GPIO13.

Can you please share some insights regarding this?

Regards,

Sayan

+1 Hadi Moradisizkoohi 3 months ago in reply to sayan Sarkar

TI__Expert 6150 points

Hi Sayan,

Some of the pins are AGPIO, which means they can work as both digital pin and ADC pin. To configure them as a digital pin, you need to use this function GPIO_setAnalogMode(). Please note these pins have no function by default. Please refer to "9.4 Digital Inputs and Outputs on ADC Pins (AGPIOs)" in technical reference manual.

Regards,

Hadi

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TMS320F2800157: The example code provided FOR COMPARATOR ''CMPSS'' with C2000 microcontroller for TMS320F2800157 is not working.