CCS/TMS320F28379D: GPIO_Sttings

Hi,

You can refer to Configuration Overview section in TM320F2837xD TRM under GPIO. To summarize you need to:

1. Choose the peripherals as per application need. Please note that all the settings are wrt to GPIO number here. Eg. EPWM1

2. Configure the GPyMUX1/2 & GPyGMUX1/2 for pin musing selection for GPIO.

3. Enable pull up resistors using GPyPUD registers.

4. Select input qualification if required using GPyQSEL1 & GPyQSEL2 registers.

Additionally you can also refer to gpio_setup_cpu01 example in ControlSUITE for sample code.

In case of analog pins Eg. ADC, all analog pins are ADC inputs by default. To switch to the DAC on a pin shared between the ADC and DAC, set the DACOUTEN bit (the ADC input doesn't need to be disabled; it won't affect the DAC operation)



Thanks
Vasudha

THANK YOU
In my application
Buffer circuit is connected to GPIO26,27,25 to LEDs RED and Green
so i want check the input data processing through this LEDs..

Hi
GpioCtrlRegs.GPAPUD.bit.GPIO25 = 0; // Enable pullup on GPIO25
what is the means of GPAPUD and GPAMUX2 and GPADIR
where i can use this different configuration ?
how can i configured ?
what is the means of Enable pullup on GPIO25 and GPIO25 = GPIO25 and GPIO25 = output?

Hi,
Please refer Technical reference manual for information related to GPIO registers( GPAPUD, GPAMUX2, GPADIR)

GpioCtrlRegs.GPAPUD.bit.GPIO25 = 0; // Enable pullup on GPIO25. It is useful to steer an input pin to a known state if no input is present. A pull-up will make sure the pin is up without taking in too much current

GpioCtrlRegs.GPAMUX2.bit.GPIO25 = 0; // gpio25 pin mux is configured for gpio. Other possible muxing options can be OUTPUTXBAR2, EQEP2B, MDRB, SPISOMIB, SD_C5.

GpioCtrlRegs.GPADIR.bit.GPIO25 = 1; // GPIO25 = output means gpio 25 is configured as output


Thanks
Vasudha

Thank you
so in my application
GpioCtrlRegs.GPAPUD.bit.GPIO25 = 0;
to cheek the stats of ISR
i am current