The slave device of IIC is unable to raise the SCL response.

[AngusHZ]

Here are the logs and waveforms. The slave device of IIC is unable to raise the SCL response. The data cannot be sent out either. The code is provided in the attachment.

HAL_I2C_AddrCallback: 开始接收数据
接收到字节[0]: 0x40
接收到字节[1]: 0x03
接收到字节[2]: 0x22
接收到字节[3]: 0xFE
接收到字节[4]: 0xBE
HAL_I2C_ListenCpltCallback: 开始接收数据
接收到字节[0]: 0x41
HAL_I2C_ListenCpltCallback: 开始发送数据
发送字节[0]: 0x05
发送字节[1]: 0x62
发送字节[2]: 0xFE
发送字节[3]: 0xBE
发送字节[4]: 0x30
发送字节[5]: 0x31

[mƎALLEm]

Hello @AngusHZ and welcome to the ST community,

As technical admin in this community, let me ask you to provide more details about your project:

- What STM32 part number are you using?

- What I2C slave are you connecting to the STM32?

- Your schematic

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