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stm32f4 LCD 16x2 I2C

Question asked by touftoufe.okami on Jul 22, 2016
So I'm a beginner with stm32f4, and I'm trying to use an LCD 16x2 with I2C, I'm trying  to make it work but il does not, and I don't know where is the problem. Help please!
When I initialize the LCD or try to send a command or a data it turns off.

My code is attached.