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I2C

ankushkhare89
Associate II

‎2016-08-03 06:51 AM

Posted on August 03, 2016 at 15:51

Hello

I have configured my STM32F405 board in the I2C master receiver mode.

I am able to get interrupt for the start bit in the ISR.

Now I am not able to clear the ISR flag. I tried to read out the I2C1_SR1 register with SB bit, but it is not resetting the flag. Also the CR1 register is read only. How can I reset the interrupt flag for start condition so that next time I will again get the interrupt for Start condition ? 
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3 REPLIES 3
Radosław
Senior II

‎2016-08-03 09:01 AM

Posted on August 03, 2016 at 18:01

an2824

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ankushkhare89
Associate II

‎2016-08-03 11:14 PM

Posted on August 04, 2016 at 08:14

hello, 

I am a bit new to programming. 

Can you please explain it ? I mean in NVIC vector which one to clear ?
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Nesrine M_O
Lead II

‎2016-08-04 01:12 AM

Posted on August 04, 2016 at 10:12

Hi  khare.ankush,

“I am a bit new to programming�

The STM32CubeF4 firmware package provides a set of examples showing how to use the I2C in master/slave communication, based on polling, interrupt and DMA programming models. You can start from these examples to do your own:

STM32Cube_FW_F4_V1.13.0\Projects\STM32F4-Discovery\Examples\I2C 

-Syrine-
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