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Getting Started with Tiva C series

Posted by frankthetank34 on March 23, 2016

Hello,

I am starting development of a project with the Tiva C series TM4c1294 launchpad. I see there is an example RTOS project for the board under the "sensoriot" project. There is also a "freertos" demo on the tm4c123 launchpad. From what I can tell, the two projects link to the same freertos source files within the tivaware install directory. When reading the "porting a freertos demo" page, it makes me believe there should be minute differences between the two projects, as they run on the same family of processors but slightly different processors. How are the projects differentiating the two? I am trying to understand what parameters are actually different. I would like to use the free_rtos demo to start, as it is significantly less complicated, but I want to run it on the TM4C1294 launchpad.

Thanks


Getting Started with Tiva C series

Posted by rtel on March 24, 2016

These are Cortex-M based devices, so will use exactly the same FreeRTOS port. The FreeRTOS download has lots of Cortex-M demo applications, which target lots of different Cortex-M parts, from lots of different MCU vendors, and all reference and all these demos reference and build the same Cortex-M port layer in the FreeRTOS/Source/portable/[compiler] directory.

The only differences will be found in the application, not the RTOS source code, where:

  • the linker scripts will be difference
  • the start up code will be difference (different interrupt vector table in particular)
  • FreeRTOSConfig.h will be different, this just tailors the RTOS to the application

Getting Started with Tiva C series

Posted by frankthetank34 on March 24, 2016

Thank you for the clarification. It appears I was misinformed as to what was needed to get up and running. Thanks again


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