LAUNCHXL-CC3235S: I2C Slave example

Vinicius Oliveira

Prodigy 240 points

Part Number: LAUNCHXL-CC3235S
Other Parts Discussed in Thread: CC3235S

Hello,

I was searching for some exemple implementation of CC3235S I2C as Slave, but I could not find anything.

TI Team, could you please point me where I can find this information about I2C Slave ?

Regards,

over 5 years ago

0 Michael Reymond over 5 years ago

TI__Mastermind 40965 points

Hi,

While the CC3235 I2C peripheral does have support for slave mode, there are currently no drivers or examples that demonstrate the use of I2C slave mode. There is this one E2E post that shows how you would enable it with low-level driverlib calls: https://e2e.ti.com/support/wireless-connectivity/wifi/f/968/t/373617

Beyond that, you will need to look at the CC3235 technical reference manual to see what register writes are needed to get the CC3235 to operate in i2c slave mode: http://www.ti.com/lit/swru543

What is the impetus behind needing i2c slave functionality? As I2C is often used by MCUs to control simple devices, needing an MCU to function as a slave to a different MCU is typically not done as interfaces such as SPI and UART are more often used.

Regards,

Michael

0 Vinicius Oliveira over 5 years ago in reply to Michael Reymond

Prodigy 240 points

Thank you Michael, I'm using it as Master and my other MCU as slave.

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LAUNCHXL-CC3235S: I2C Slave example