Trouble reading and writing data vial I2C using smbus2 library

[satya-prakash-7]

I'm trying to connect my energy measurement IC with Raspberry Pi 3B using the I2C protocol. I'm using sudo i2cdetect -y 1 to detect the connected devices and it is correctly showing the address(7-bits) of the connected IC. The IC contains various registers of 8,16,24 and 32-bits. The register addresses are 16-bits long and I'm using the following code to access a register 0x021C(24-bits) and write registers 0xFE(8-bit) and 0x0120(16-bit).

Python Code

from smbus2 import SMBus

bus = SMBus(1)

address = 0x38

bus.write_byte_data(address,0xFE,0xAD)  #Writing single byte of data
bus.write_i2c_block_data(address,0x120,[0x00,0x30])  #Writing multiple bytes of data to the register
block = bus.read_i2c_block_data(address,0x21C,3)  #Reading multiple bytes of data from the register
print(block)

bus.close()

The output should be[0x8D,0xXX,0xXX]but the code is producing output as [0,0,0]

• Question-1: Is giving a 16-bit addressing allowed in this Library or not?
• Question-2: If allowed then why the code is not working?