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Old discovery stm32F407 with chip rev. A, I2C issue

Question asked by passarini.fabio on Nov 3, 2016
Latest reply on Nov 3, 2016 by passarini.fabio
I tried a lot of time generate I2C code with cube MX and AC6 IDE, but I never see SDA or SCL move. I generated code for other I2C than I2C1 but with no success.
Is there any issue using stm32f407VGT6 Rev. A mounted on my Discovery board?
Driving PB6 and PB7 as GPIO in output  mode I see the pin goes high and low...