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I2C master without slave | Cypress Semiconductor

I2C master without slave

Summary: 1 Reply, Latest post by ANKS on 10 Apr 2017 12:50 AM PDT
Verified Answers: 0
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gogglygogol's picture
15 posts


i have copied some code from the examples. My problem is that without an Slave is connected, the code is not halted in the loop.


I expect that the first do-while loop should run until a slave acknowldged / the statusbyte should be 0x20 (I2C_MSTAT_ERR_ADDR_NAK  /* Slave did not ACK */) .

 thanks a lot


Heres the code:


//Write to Slave

    temp = I2C_MasterWriteBuf(slAddress,(uint8 *)i2c_txArray,i2c_TxBufferSize,I2C_MODE_COMPLETE_XFER);   
while (temp != I2C_MSTR_NO_ERROR);

/* Wait for the data transfer to complete */
while(I2C_MasterStatus() & I2C_MSTAT_XFER_INP){};

temp = I2C_MasterClearStatus();



ANKS's picture
Cypress Employee
345 posts

Can you please provide us with your project

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