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.[DEAD LINK /public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/I2C Fast Mode 400KHz&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentviews=284]https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=%2Fpublic%2FSTe2ecommunities%2Fmcu%2FLists%2Fcortex_mx_stm32%2FI2C%20Fast%20Mode%20400KHz&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B¤tviews=284 Own addresses are for slaves, I don't think it supports 10-bit mode.