Altera Avalon I2C Master Core w/Nios II

[Altera_Forum]

Hi all, 

 I am trying to run the Altera Avalon Master I2C core from Nios II w/Eclipse. I am accessing the core registers in memory using "altera_avalon_i2c_regs.h"  In the memory debug view, it seems that all of my calls are responded to in memory, other than IOWR_ALT_AVALON_I2C_TFR_CMD, which is the register that holds the data to be transmitted. It remains zero at all times.  Any ideas, or any recommendations on other I2C cores ?  Thanks, rabee

[Altera_Forum]

It is a registre for write only, then always that you try to read, the funtion return 0000000 

   --- Quote Start ---  Hi all,  I am trying to run the Altera Avalon Master I2C core from Nios II w/Eclipse. I am accessing the core registers in memory using "altera_avalon_i2c_regs.h"  In the memory debug view, it seems that all of my calls are responded to in memory, other than IOWR_ALT_AVALON_I2C_TFR_CMD, which is the register that holds the data to be transmitted. It remains zero at all times.  Any ideas, or any recommendations on other I2C cores ?  Thanks, rabee  --- Quote End ---