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stm32f4 i2c

santoshpawar
Associate

‎2013-07-29 09:32 PM

Posted on July 30, 2013 at 06:32

 hi  I am santosh,

I am using stm32f407zet6 for communicating with accelerometer using i2c interrupt mode

  My problem is  after receving no of bytes to be read RXNE and BTF flag  remained set .

and after that interrupt is not genererated. I have cleared RXNE and BTF flag after I2C_STOP.

pls somebody give me proper i2c  event isr

Regards,

Santosh pawar

#i2c #stm32f4-i2c
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jpeacock2399
Associate II

‎2013-07-30 06:56 AM

Posted on July 30, 2013 at 15:56

Make sure you are sending a NAK at n-2 bytes received and a STOP at n-1 bytes.  For single byte transfers NAK must be sent before the first byte is received.  Look at the timing for EV6 and EV7 events.

  Jack Peacock

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