good to hear you got it going!
0x28 is decimal 40, I was thinking that the documentation may have confused hex and decimal
but x3c is decimal 60 not 54.
anyway, full marks for persistance 
good to hear you got it going!
0x28 is decimal 40, I was thinking that the documentation may have confused hex and decimal
but x3c is decimal 60 not 54.
anyway, full marks for persistance