IIC bus problem

[jjyeh1976]

Posted on October 02, 2009 at 07:56

IIC bus problem

[jjyeh1976]

Posted on May 17, 2011 at 15:04

Hi,

I use STM8S105K IIC bus with a slave on address 0x60, while sending address to the bus, the STM8 cannot detect the ack bit, I'd capture the signal of both SDA and SCL, it's obviously (see attachment) that the slave had send the ''ACK'' at the 9'th clock, what's wrong?

[mozra27]

Posted on May 17, 2011 at 15:04

Hi,

I have one question concerning your application - What is the slave type? If you use the AARDVARK I2C module and 7bit addressing mode you should shift the own address by 1 Example: I2C Own address (Master) = 0xA0 shifted by 1 on Aardvark module (Slave) = 0x50 Please check this point Regards Mozra