BMP581 NWM access

[Jule]

Hi,

I evaluating the NVM of product BMP581 and struggle with the reading procedure.

I followed instructions in datasheet and this is my Python code:

       self.writeRegister(0x37,int(f'11000000',2)) # Switch to standby

        time.sleep(0.1)

        x28 = format(self.readRegister(0x28),"08b") # Read status

        if x28[4:7]=='001': # No error and ready

            for reg in range(0x26, 0x22, -1😞

                #print(f'Loop {reg} Register {0x00+reg}')

                self.writeRegister(0x2B,int(reg)) # Write address

                self.writeRegister(0x7F,int(0x5D)) # Write first read command

                self.writeRegister(0x7F,int(0xA5)) # Write second read command

                #time.sleep(0.1)

                x28 = format(self.readRegister(0x28),"08b") # Read status

                if x28[4:7]=='001': # No error and ready

                    NVM1 = format(self.readRegister(0x2C),"08b") # Read register

                    NVM2 = format(self.readRegister(0x2D),"08b") # Read register

                    uid= uid + NVM2 + NVM1

                    print(f'Register {hex(reg)} read {NVM1} {NVM2}!')

                else:

                    print(f'NVM read {hex(reg)} not ready')

        else:

            print(f'NVM not ready')

All readings from the registers 0x2C and 0x2D always 0x00. What is wrong?

Kind regards,

Jule

[FAE_CA1]

Hi,

Thanks for your inquiry.

Please see the attached "How to use BMP581 NVM to store the offset from end-of-line calibration.pdf" to see if you can make it work on your side.

Thanks.

[FAE_CA1]

Hi,

Are you able to get the BMP581 NVM access working on your side?

Thanks.