About I2C_DutyCycle and I2C_OwnAddress1

[viprobin]

Posted on January 14, 2012 at 07:29

I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;

I2C_InitStructure.I2C_OwnAddress1 = 0x33;

/** @defgroup I2C_duty_cycle_in_fast_mode

  * @{

  */

#define I2C_DutyCycle_16_9              ((uint16_t)0x4000) /*!< I2C fast mode Tlow/Thigh = 16/9 */

#define I2C_DutyCycle_2                 ((uint16_t)0xBFFF) /*!< I2C fast mode Tlow/Thigh = 2 */

#define IS_I2C_DUTY_CYCLE(CYCLE) (((CYCLE) == I2C_DutyCycle_16_9) || \

                                  ((CYCLE) == I2C_DutyCycle_2))

I'd like to know when I should choose I2C_DutyCycle_16_9. And the value of the I2C_OwnAddress1 could be any 7-bit or 10-bit address, couldn't it?

[PeppeST]

Posted on February 15, 2012 at 17:32

Someone can help on that?

[Tesla DeLorean]

Posted on February 15, 2012 at 18:43

Someone can help on that?

You're staff here, the rest of us are just running round the asylum. You might want to get some FAE's to participate.

The duty is a fudge to get around the short comings of the prescaler.

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Own addresses are for slaves, I don't think it supports 10-bit mode.