GPIO not toggling CC2538+zStack

Hariprasad C R

Other Parts Discussed in Thread: CC2538

I tried to toggle the GPIO in CC2538 + zStack with the following code

IOCPadConfigSet( GPIO_A_BASE, GPIO_PIN_6, IOC_OVERRIDE_PUE);

    GPIODirModeSet( GPIO_A_BASE, GPIO_PIN_6, GPIO_DIR_MODE_OUT),

    GPIOPinTypeGPIOOutput(GPIO_A_BASE,GPIO_PIN_6);

    GPIOPinWrite(GPIO_A_BASE,GPIO_PIN_6,0);

    GPIOPinWrite(GPIO_A_BASE,GPIO_PIN_6,1);

GPIOPinWrite(GPIO_A_BASE,GPIO_PIN_6,0);

But after once I made the GPIO to low I can't see that the GPIO beacomes high again after calling the function GPIOPinWrite(GPIO_A_BASE,GPIO_PIN_6,1);

Is there something extra do I need to do When I'm trying to use gpio while using zStack

over 10 years ago

0 YiKai Chen over 10 years ago

Guru 735685 points

If you want to set GPIO_A_BASE and GPIO_PIN_6 as general purpose output, you only need to use the following line.
GPIOPinTypeGPIOOutput(GPIO_A_BASE,GPIO_PIN_6);

The following line is used for setting GPIO_A_BASE,GPIO_PIN_6 to low.
GPIOPinWrite(GPIO_A_BASE,GPIO_PIN_6, 0);

0 YiKai Chen over 10 years ago

Guru 735685 points

By the way, you can download and install CC2538 foundation firmware. There is a GPO example in cc2538_foundation_firmware_1_0_1_0\bsp\srf06eb_cc2538\examples\leds and I suggest you to study it first.

0 Hariprasad C R over 10 years ago in reply to YiKai Chen

Intellectual 485 points

Actually to make the GPIO pin high I had to modify it as
GPIOPinWrite(GPIO_A_BASE,GPIO_PIN_6,GPIO_PIN_6);
So that the 6th pin should be high (when I'm setting it as 1 i think some other pin is getting toggled/high)

0 YiKai Chen over 10 years ago in reply to Hariprasad C R

Guru 735685 points

Yes, you're right and it's good to know it works now.

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GPIO not toggling CC2538+zStack