CCS/CC2640R2F: I have two I2C devices, one is the device address is 7-bit 0x6C [7:1], plus read and write bits, and the other device address is 6-bit 0x36 [7:2], and the second bit must be Write 0, plus read and write. If I follow the manual, then the I2C

Lease

Part Number: CC2640R2F

Tool/software: Code Composer Studio

I have two I2C devices, one is the device address is 7-bit 0x6C [7:1], plus read and write bits, and the other device address is 6-bit 0x36 [7:2], and the second bit must be Write 0, plus read and write. If I follow the manual, then the I2C address specified by the tid corresponding to the two devices is the same 0x6C, how to solve this kind of situation.

over 5 years ago

0 Eirik V over 5 years ago

TI__Guru 56590 points

Does this help:

https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz/f/156/p/698308/2574746#2574746

0 Lease over 5 years ago in reply to Eirik V

Prodigy 230 points

I need to have two identical I2C devices with the same slave address mounted on the I2C bus of the CC2640R2F. How should I deal with them? The timing diagram of the returned data is incorrect.The SM7391 device address is 0x6C, and the device address of the MAX17205 is also 0x6C. It is mounted on the same I2C bus. What should I do?

0 Eirik V over 5 years ago in reply to Lease

TI__Guru 56590 points

Hello User,

Sometimes slave devices will have some externals pins that can be set to 0 or 1 to toggle a couple of the address bits to avoid this issue. Is that the case for your sensors?

Otherwise you will need to get creative in HW and or SW. I found some creative ideas here:

https://electronics.stackexchange.com/questions/5096/how-to-resolve-i2c-address-clashes

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CCS/CC2640R2F: I have two I2C devices, one is the device address is 7-bit 0x6C [7:1], plus read and write bits, and the other device address is 6-bit 0x36 [7:2], and the second bit must be Write 0, plus read and write. If I follow the manual, then the I2C