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EK-TM4C123GXL: The board is not detected by CCS V12, TM4C ARM®︎ Cortex®︎-M4F MCU (2.1.4.178) package is not being installed

Part Number: EK-TM4C123GXL


Hi, I'm using CCS V12 with TM4C123GXL launchpad and i'm just getting started by following the guidelines (for the examples), I have 2 problems : 

- First issue, CCS can't detect my board as shown in the image below : 

- Second Issue, TM4C ARM® Cortex®-M4F MCU (2.1.4.178) package for the provided examples is not being installed, even though CCS shows me that it did as shown but it can't be found in the installation location

and CCS won't import the blinky example files

 

after the installation is successful there is no file to be found in the installation directory nor does CCS sees the installation as it should highlight the package with green arrow as the guidelines illustrate :

your kind support is appreciated ,

Thank you