Forum Post: RE: LMP90100 SPI Interface

[quote user="Andr��s Kov��cs"]

After checked galvanic connection from pin-to-pin, now in doubt, if the IC was damaged during I soldered the protoboard?!

Any other suggestions?

[/quote]

András Kovács,

After I was able to communicate with the LMP90100,  I wrote an error check routine that I use to test newly constructed boards. 

My simple error check routine is the following:

    // Runs periodically and sets an error flag if I can not communicate with the LMP90100
    regValue = lmpRead(0x22)                    // LMP90100 Register with non-zero value
    if  regValue != 0x13:                                  // Error check - Read result from a ADC register with non-zero value
        flagError1 = 1                                        // Set error flag

This may help you to isolate your problem.

Brad