About germain

germain · 2015-08-25

Posted on August 25, 2015 at 16:53I know it's a recurring problem. I could'nt make I2C2 work on my STM32F401VET.When I use RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);I2C2->SR2 =2No matter what I do.I try many work around proposed on this fo...

germain · 2015-08-28

Posted on August 28, 2015 at 09:20Sorry it an artefact I test I2C3 after everything fail on I2C2, I forgot to set it back to I2C2 before the copy and paste on this forum.So it's not the problem. By the way I2C1 and I2C3 look to work fine. I will cha...

germain · 2015-08-27

Posted on August 27, 2015 at 18:54This is how I have done it.GPIO_DeInit(GPIOA);GPIO_DeInit(GPIOB);GPIO_DeInit(GPIOC);GPIO_DeInit(GPIOD);GPIO_DeInit(GPIOE);// GPIO Periph clock enableRCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); // PORTA cl...

germain · 2015-08-26

Posted on August 27, 2015 at 00:17I use standard periph.I already try inverting the init of SDA and SCL ( I read the thread you mentioned)I try your sample of code, it did'nt work :\I check the state externaly not internaly with a Flag.

germain · 2015-08-26

Posted on August 26, 2015 at 16:07It is an audio codec WM8731, there are also external pull up resitor on SDA and SCL.At fisrt I thought that it was the codec wich pull low the SDA. But when I put the SDA pin as Input, the line goes HIGH then I set ...

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I2C2 Busy flag after clock enable

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