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Tool/software: Code Composer Studio
I am working on CCS7. I have a EK-TM4C1294XL.
I made a new project by copying enet_io and renaming it.
To this project I wanted to add an LED on PF1. Looking at the code I concluded I needed to configure the pin as an output similar to how a port N pint was confired as output in the file drivers/pinout.c.
Right after the existing code on line 170 as follows:
// Default the LEDs to OFF.
//
ROM_GPIOPinWrite(GPIO_PORTN_BASE, GPIO_PIN_0 | GPIO_PIN_1, 0);I made the following change to add new code to the file and saved it.
//
// Set PF1 for GIPO Output and high.
//
//GPIODirModeSet(uint32_t ui32Port,uint8_t ui8Pins,uint32_t ui32PinIO)
//GPIODirModeSet(GPIO_PORTF_BASE,GPIO_PIN_1,GPIO_DIR_MODE_OUT)
// Wait for the GPIO F to come out of reset.
//
while(!MAP_SysCtlPeripheralReady(SYSCTL_PERIPH_GPIOF))
{
}
// MAP_GPIODirModeSet(GPIO_PORTF_BASE,GPIO_PIN_1,GPIO_DIR_MODE_OUT);
// GPIOPinConfigure(GPIO_PF1_EN0LED2); // FLE on 20180626
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1);
MAP_GPIOPadConfigSet(GPIO_PORTF_BASE, GPIO_PIN_1,GPIO_STRENGTH_12MA, GPIO_PIN_TYPE_STD);
//Lets send it high.
ROM_GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1, GPIO_PIN_1 );
//Lets send it low.
ROM_GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1, 5);
//Lets send it high.
ROM_GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1, GPIO_PIN_1 );
When I open the pinout.c file in the original enot_io project my changes are in it too.
How was I to know this would happen? What is this file behavior called and where should I read about it.
Is there documentation to tell me how I should go about writing code that does not have unexpected shared files with outer projects and for example mess up the examples?
Hi Forrest,
That is a good question. When that project was originally created, the file "pinout.c" was included as a link instead of being copied into the project directory. When you copied that project, it copied the link. There is a subtle indication when you view the file list in "Project Explorer". Notice in the snippet below that the icon for the file "pinout.c" has a small arrow in the lower right corner. That means this is a link. Compare that to the icon for the file cgifuncs.c. No small arrow means a copy of this file exists in the project.
You can right-click on the link and select properties. Here you can see that actual file location.
You can delete the link and then paste a copy of the same file in your projects. Now edits will be to only the copy in your new project.
Hello Bob,
Very nice explanation of the root cause of the problem I had. Once I knew what to call the problem, Linking instead of Copying, it was easy to learn more.
I found a nice youtube at: youtube.com/watch?v=ngp3b6ZhT8U
Using your method to find the path to the file I copied it. I then selected the project. Right clicked and selected too add a file.
I got this dialog and selected to Copy file.
Bingo the file is now in my project.
Then I deleted the linked file.
Got this warning
Selected OK.
I hammered the project (Build ...) and ran in Debug.
It worked.
1000 Thanks,
