No, this example is as a central and connect to up to 8 peripheral,If you want to be a peripheral and being connected with several central ,nRF51 is not support , only nRF52 support as Kristin said.
No, this example is as a central and connect to up to 8 peripheral,If you want to be a peripheral and being connected with several central ,nRF51 is not support , only nRF52 support as Kristin said.