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StarterWare LCDK C6748 audio demo - how to solve linker dependencies / location of source files for I2C functions?

Matthias Weber
Intellectual 505 points

I have been trying to use parts of the StarterWare demo application for the LCDK C6748 to include the ToneLoop in one of my own projects. I copied the required C source and header files (this approach worked so far). Unfortunately I cannot find the implementation files for the following functions, which in turn gives me linker errors.

The example is based on McASP / I2C as it is interfacing a stereo audio codec (AIC31).


   undefined              first referenced
   symbol                    in file    
  ---------              ----------------
  _I2CInterruptVectorGet ./demoI2C.obj  
  _I2CMasterBusBusy      ./demoI2C.obj  
  _I2CMasterControl      ./demoI2C.obj  
  _I2CMasterDataGet      ./demoI2C.obj  
  _I2CMasterDataPut      ./demoI2C.obj  
  _I2CMasterDisable      ./demoI2C.obj  
  _I2CMasterEnable       ./demoI2C.obj  
  _I2CMasterInitExpClk   ./demoI2C.obj  
  _I2CMasterIntDisableEx ./demoI2C.obj  
  _I2CMasterIntEnableEx  ./demoI2C.obj  
  _I2CMasterIntStatus    ./demoI2C.obj  
  _I2CMasterSlaveAddrSet ./demoI2C.obj  
  _I2CMasterStart        ./demoI2C.obj  
  _I2CMasterStop         ./demoI2C.obj  
  _I2CSetDataCount       ./demoI2C.obj  
  _I2CStatusClear        ./demoI2C.obj  

I know that copying the source and header files is not a clean solution (consider it quick & dirty) so I want to go with using the correct include files+paths and library files+paths.

Anyhow it would be interesting if there are source files for the given C functions for I2C.

In a next step I tried to add the following library search paths (a) and library files themselves (b).

Library search paths (a):

  •  "${CG_TOOL_ROOT}/lib"
  •  "C:\ti\C6748_StarterWare_1_20_04_01\binary\c674x\cgt_ccs\c6748\system_config\Debug"
  •  "C:\ti\C6748_StarterWare_1_20_04_01\binary\c674x\cgt_ccs\utils\Debug"
  •  "C:\ti\C6748_StarterWare_1_20_04_01\binary\c674x\cgt_ccs\c6748\lcdkC6748\platform\Debug"
  •  "C:\ti\C6748_StarterWare_1_20_04_01\binary\c674x\cgt_ccs\c6748\drivers\Debug"
  •  "${CG_TOOL_ROOT}/include"

Library files (b):

  •  "libc.a"
  •  system_config.lib
  •  platform.lib
  •  utils.lib
  •  drivers.lib


I still get the linker errors. Any help will be appreciated! Thanks.

Edit: from the TI Wiki: "The I2C driver library exports a set of APIs to configure and use I2C module for data transfers. The APIs are listed in include/i2c.h." But where ist the I2C driver library?

Kind regards,
Matthias

  • 0
    TI__Guru** 116100 points

    Dear Matthias,
    This definitions from drivers.lib.
    Please make sure that you have linked the following library in your project.
    C:\ti\C6748_StarterWare_1_20_04_01\binary\c674x\cgt_ccs\c6748\drivers\Debug\drivers.lib

    If possible, attach the project, will compile it for you.

    Can you please attach the screen shot of the Library section of this project and CCS build log.

    C:\ti\C6748_StarterWare_1_20_04_01\drivers\hsi2c.c

    C:\ti\C6748_StarterWare_1_20_04_01\drivers\i2c.c