I am interfacing BQ34110 IC with stm32f4XX controller.But I am not getting proper response from I2C bus.

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Associate

Hi,

Have you placed pullup resistors internally or externally? Internally via the GPIOx_PUPDR register. Do you get ACK from the BQ34110?

ND

Guru

Your presentation lacks any useful detail.

Show circuit wiring

Show code

Show scope/analyser output

Consider bit banging protocol using diagrams from datasheet to understand correctly signalling/response.

STM32 expects I2C address in high order bits of the byte.

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