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GPIO on tiva C TM4C 123G board

qi wang
Intellectual 480 points

Hi,

I want to use the GPIO pins (J1~J4 connnectors) on this board to generate digital control signal to other boards.

But I found that many GPIO pins are reused by many functions. 

If I want to use GPIOE to generate the signals like this:

SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE, GPIO_PIN_1); //~ADSrset
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE, GPIO_PIN_2); //SPIstart
GPIOPinTypeGPIOOutput(GPIO_PORTE_BASE, GPIO_PIN_4); //~SPIcs
GPIOPinTypeGPIOInput(GPIO_PORTE_BASE, GPIO_PIN_5); //~SPIdrdy-interrupt

Does it work?  Because I found on the datasheet, these pins are resued by analog function 'AIN'. I am not sure if they conflict.

Thanks!

Qi