Yup, look in your master output
your callback print is there from slave
and you got your 60 words from master printing to slave's callback
"/ 2, 55, 1));" <---------------- (1): overload, change to 0 or remove it entirely, to disable F&F, keep 1 there to keep F&F enabled for the master sending transfer16 method
your callback print is there from slave
and you got your 60 words from master printing to slave's callback
"/ 2, 55, 1));" <---------------- (1): overload, change to 0 or remove it entirely, to disable F&F, keep 1 there to keep F&F enabled for the master sending transfer16 method