Hi SiYe_3979446,
I have gone through your attached project. The interrupt issue is being created unnecessarily due to the checking of the condition I2CS_INTR_SLAVE_I2C_WRITE_STOP explicitly. The conditions of FIFO write and read flags being set is taken care by the component ISR itself, therefore you need not check the condition with every slave write complete transfer using the macro.
I have shared my project in which I have included cyapicallbacks.h in the main file and used the I2CS_I2C_SlaveCompleteCallback function to service the interrupt. This callback function is called when slave transfer is completed. I have defined I2CS_I2C_SLAVE_CMPLT_CALLBACK in the header file. You can go through this macro in the component datasheet. Please go through the attached project and let us know if you are facing the same issue again.
Also, the number of bytes should not be a problem as the size of software buffer is enough to handle as per the maximum size of RAM.
Thanks and Regards,
Aashita
