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Apparently the code you are compiling is looking for two peripherals in your system, one called i2c_scl and another one i2c_sda, but they aren't present. You should add them to your SOPC Builder or QSys project.
From the names I'm guessing they are 1 bit bidirectional PIOs.
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Thanks for your advice,Daixiwen!
I did review my SOPC, it have enough component for audio. And in define of function I2C_write(); the sample code was define I2C_SCL_BASE is clk_base and I2C_SDA_BASE is data_base. But I don't understand what are the address of clk base and data base? I found it in the internet but it haven't had the info. I need!! (T_T")!
hix hix, Who have another idea please help me (^_^")!!!???
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