I am using nrf51 running as a peripheral and an iphone app as central. It works OK when I first use the iphone app to connect to nrf51. Then I quit the iphone app and let the nrf51 run in an idle mode with ble.waitForEvent(); If I restart the iphone app within a short time period, e.g., 1min, it can connect to nrf51 and work correctly with it. However if I wait longer time, e.g., 5-10mins, to restart the iphone app and connect to the nrf51, it can only discover the nrft1 advertising. The nrf51 does not respond to any message sent from the iphone App.
It seems that waiting in a idle mode with ble.waitForEvent() works only for a rather short period of time. The system would not function properly if there is no central device connect to it in a while. What could be the problem? Thanks!
