CC2640: CC2640 I2C setting at Device Idle mode

Kz777

Expert 7895 points

Part Number: CC2640

Hi champs,

We are developing CC2640 base system. They use it SoC (App MCU +RF).

We would like to set I2C=H at device idle statement. because, connected I2C line have to set "pull up"

Each of I2C line will be "L" at idle mode . Do you have any idea to set "H" ?

Regards,

Kz777

over 9 years ago

0 Eirik V over 9 years ago

TI__Guru 56590 points

Hello,
You need an external pull-up for I2C. Here is an app note on how to calculate the resistor value used:
www.ti.com/.../slva689.pdf

If you want to change the behavior of the I2C driver you will have to modify the driver files (I2CCC26XX.c and/or I2CCC26XX.h) at your own risk.

0 Kz777 over 9 years ago in reply to Eirik V

TI__Expert 7895 points

Thanks. I changed it on the BoardGpioInitTable at I2C driver. Then, we could control it.

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CC2640: CC2640 I2C setting at Device Idle mode