TM4C1231H6PM: How to detect who trigger a interrupt in Tiva 123 ?

Alexandre Tres

Part Number: TM4C1231H6PM
Other Parts Discussed in Thread: TM4C123GH6PM

I have a GPIOF_Handler function. Inside this function, i need to know if a sw1(PF4) is pressed or if a sw2(PF0) is pressed, and then, execute a code properly. How i do this without using libraries? Using only

"TM4C123GH6PM.h", <stdint.h> and <stdbool.h>?

Thank's

over 6 years ago

0 Bob Crosby over 6 years ago

TI__Guru 72500 points

Why are you not using the libraries provided? Notice that in the "TM4C Forum General Guidelines" posted at the top of this forum, we discourage the use of direct register writes and encourage the use of the TivaWare library functions. The use of proven library functions reduces the chance of coding errors and reduces the support burden.

That said, if your college professor requires that you avoid library calls, then use the library function as your example code. The function that returns the GPIO interrupt status is "GPIOIntStatus()". It can be found in the file:
C:\ti\TivaWare_C_Series-2.1.4.178\driverlib\gpio.c

0 Alexandre Tres over 6 years ago in reply to Bob Crosby

Prodigy 20 points

Thanks for your response, but that does not solve my problem. I need a simple example such as if (sw1 == pressed) {
code here
}
else if (sw2 == pressed) {
code here
}
Using only the libraries I mentioned initially.
This code would be inside the function
void GPIOF_Handler (void) {

}
Similar to
void GPIOF_Handler (void) {
if (sw1 == pressed) {
// turn off the LED
}
else if (sw2 == pressed) {
// turn on the LED
}
}
Thank you.

0 Bob Crosby over 6 years ago in reply to Alexandre Tres

TI__Guru 72500 points

Here is a CCS project that is similar to what you want. It does use TivaWare function calls.

/cfs-file/__key/communityserver-discussions-components-files/908/EK_2D00_GPIO_5F00_Interrupts.zip

Arm-based microcontrollers

Arm-based microcontrollers forum

TM4C1231H6PM: How to detect who trigger a interrupt in Tiva 123 ?