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fzx · 2019-12-06

Is there a limit on how many bytes to send over I2C from the slave?The MCU in question is STM32F469NI, and I have programed the board to act as an slave using HAL, it works fine if amount of data sent from slave is less than 100, but gets corrupted f...

fzx · 2019-12-06

I have to add that, I have confirmed using a logic analyzer that what the master receives is actually what's on the wire. So the master side is not at fault here.

fzx · 2019-12-06

Thanks berendi for the reply!For the sake of simplicity, and to make sure it's not affected by buffers, I have modified HAL's function I2C_SlaveTransmit_TXE to send a hard coded byte (0x55). And after 100 bytes I receive garbage on master side. I hav...

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Is there a limit on how many bytes to send over I2C from the slave? The MCU is STM32F469NI, and I have programed the board to act as an slave, it works fine if amount of data sent from slave is less than 100 bytes, but data gets corrupted if sent more.

Re: Is there a limit on how many bytes to send over I2C from the slave? The MCU is STM32F469NI, and I have programed the board to act as an slave, it works fine if amount of data sent from slave is less than 100 bytes, but data gets corrupted if sent more.

Re: Is there a limit on how many bytes to send over I2C from the slave? The MCU is STM32F469NI, and I have programed the board to act as an slave, it works fine if amount of data sent from slave is less than 100 bytes, but data gets corrupted if sent more.