I'm a DFAE in Japan. Our customer is interested in ADXL344 for his new development with Arria 10 FPGA. He would like to use I2C interface and want the source code. Is it possible to give it for him? Or is it possible to provide some source code that he can use as a reference? He uses Nios II Processor.
You can use the reference code for the ADXL345, Software and System Requirements section. You will find there code reference for FPGA and various microcontrollers.