About mr4k

mr4k · 2025-03-05

Hello, I'm writing this in hope I can successfully resolve my issue with getting BERR on every I2C call, when connected with specific master device.I have implemented slave device using STM32F4 discovery board using HAL I2C drivers and IT functions.F...

mr4k · 2025-02-14

As mentioned in the topic subject, I would like to implement I2C Slave device which will simulate the BQ769x2 device. For development I'm using STM32F4 Discovery board, but the final product will be deployed on STM32L0.Master device is first trying t...

mr4k · 2025-03-05

@Andrew Neil wrote:@mr4k wrote:With 0-ohm, what I meant was there is no additional resistors .That would be an infinite resistance - not a zero resistance! You are absolutely right. I have updated OP with correct information / better wording. @mr4k w...

mr4k · 2025-03-05

Andrew, thanks for response.Yes, I mean CubePilot, more specific CubePilot CubeOrange.With other slave devices CubeOrange works well, and same goes for STM32F4.With 0-ohm, what I meant was there is no additional resistors on the SDA/SCL line, therefo...

mr4k · 2025-02-17

Answering to myself and potential readers again.What have solved my transmitting from slave to master issue was the pull-up resistor (8kOhm).Pull-up resistor can be further optimized based on real application I believe.Nevertheless, now in test envir...

mr4k · 2025-02-15

Thanks for your reply @TDK .I'm aware of this example, now I have taken it as base code and make changes according to my example.What I have notice I was doing wrong is calling HAL_I2C_EnableListen_IT in places I should not.I have also make sure that...

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STM32F4 as I2C Slave getting BERR on with specific Master device.

I2C Slave device implementation ACK/NACK problem

Re: STM32F4 as I2C Slave getting BERR on with specific Master device.

Re: STM32F4 as I2C Slave getting BERR on with specific Master device.

Re: I2C Slave device implementation ACK/NACK problem

Re: I2C Slave device implementation ACK/NACK problem