I am interfacing with an IR sensor that uses an SMBus. How is I2C_HAL_SetSMBusAddressCmd() used?

johnelliott — Fri, 13 May 2016 14:36:37 GMT

There seem to be several other SMBus specific functions in the fsl_i2c_hal.c file as well and no documentation I can find to explain how to use it. Any help would be apprecieated.

Re: I am interfacing with an IR sensor that uses an SMBus. How is I2C_HAL_SetSMBusAddressCmd() used?

kerryzhou — Mon, 16 May 2016 05:54:40 GMT

Hi John,

For the detail fsl_i2c_hal.c function description, you can read the fsl_i2c_hal.c directly.

Do you just don't know how to call it? You can see the function defination:

Function I2C_HAL_SetSMBusAddressCmd

/*FUNCTION**********************************************************************

* Function Name : I2C_HAL_SetSMBusAddressCmd

* Description : Enables/Disables SMBus device default address.

*END**************************************************************************/

void I2C_HAL_SetSMBusAddressCmd(I2C_Type *base, bool enable, uint8_t address)

{

I2C_BWR_SMB_SIICAEN(base, enable);

I2C_BWR_A2_SAD(base, address);

}

If you want to enable the SMBUS device default address:I2C address register 2 matching is enabled, you can call it like this:

I2C_HAL_SetSMBusAddressCmd(I2C0, 1,0XA0);

More details, you also can refer to the chip reference manual, I2C chapter.

Wish it helps you!

If you still have question, please let me know!

Have a great day,
Jingjing

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topic I am interfacing with an IR sensor that uses an SMBus. How is I2C_HAL_SetSMBusAddressCmd() used? in Kinetis Software Development Kit

I am interfacing with an IR sensor that uses an SMBus. How is I2C_HAL_SetSMBusAddressCmd() used?

Re: I am interfacing with an IR sensor that uses an SMBus. How is I2C_HAL_SetSMBusAddressCmd() used?