As I said somewhere above unless you start the soft device none of your sd_* calls will do anything, it isn’t started automagically by the arduino core…
One way to start the soft device is Bluefruit.begin()
As I said somewhere above unless you start the soft device none of your sd_* calls will do anything, it isn’t started automagically by the arduino core…
One way to start the soft device is Bluefruit.begin()