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STM32F103C8 as I2C Slave not responding to STM32F427[I2C master]

DChan.5
Associate

‎2021-02-02 02:40 AM - edited ‎2023-11-20 09:22 AM

Hello All,

I am using STM32F103C8 as an I2C Slave


_legacyfs_online_stmicro_images_0693W000007DZmd.pngAs Shown in the above image the Slave did not responded to the Master. In this particular call from the master, the slave gets in to the BERR Error.

I ***** the same Slave with Arduino Uno as I2C Master and this time the slave responded correctly. The only difference between the two master I could observe was the duration of Start bit. In case of STM32F4 as I2C Master the length of the start bit was double than that of the Arduino.

What could be the reason for this different behavior and how can I avoid this berr error?

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