TMDSCNCD28379D: Some of the GPIOs cannot be set/reset

RCH

Prodigy 30 points

Part Number: TMDSCNCD28379D

Tool/software:

Hello

I am using the 28379D control card to control a 10-phase buck converter.

I am unable to set/reset the GPIOs from GPIO B group. For the other GPIO groups, the set/reset works.

For example,

//GPIO60 set
GpioDataRegs.GPBDAT.bit.GPIO60 = 1;
GpioCtrlRegs.GPBPUD.bit.GPIO60 = 1; // 0 is enable pullup on GPIO60
GpioDataRegs.GPBSET.bit.GPIO60 = 1; // Load output latch with 0
GpioCtrlRegs.GPBMUX2.bit.GPIO60 = 0; // GPIO60 = GPIO68
GpioCtrlRegs.GPBDIR.bit.GPIO60 = 1; // GPIO60 = output

I use the above lines of code to set GPIO60. But the GPBSET option has no effect.

I have configured the pull-up, gpiomux and the direction bits properly.

I am attaching the project.

Please help me solve the issue.

Thanks and Regards

RCH

0724.MPB.zip

26 days ago

0 RCH 22 days ago

Prodigy 30 points

Hello

Could anyone help me with this issue ?

Thanks, and Regards

RCH

0 Prarthan Bhatt 22 days ago in reply to RCH

TI__Genius 13575 points

Hi,

GPIOCTRL registers are EALLOW protected. Are you doing something like below for example GPIO56 ?

//GPIO60 set and clear example

EALLOW;

GpioDataRegs.GPBDAT.bit.GPIO56 = 1;

GpioCtrlRegs.GPBPUD.bit.GPIO56 = 1; // 0 is enable pullup on GPIO56

GpioCtrlRegs.GPBMUX2.bit.GPIO56 = 0;

GpioCtrlRegs.GPBDIR.bit.GPIO56 = 1; // GPIO56 = output

EDIS;

while(1)

{

GpioDataRegs.GPBSET.bit.GPIO56 = 1; //

delay_loop();

GpioDataRegs.GPBCLEAR.bit.GPIO56 = 1; // Load output latch with 0

delay_loop();

}

// delay_loop - Delay function

void delay_loop()

{

short i;

for (i = 0; i < 1000; i++) {}

}

I checked this on Launchpad gpio56 and I see it toggling.

Thanks

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMDSCNCD28379D: Some of the GPIOs cannot be set/reset