gzll:host tx fail,but rx success

[lilong]

hi all:

       My project need 4 devices communicat with 1 host ,all use nrf51822 chip,is it possible？Now i  have a problem ,when the third device communicate with the host ,will cause the host tx fail,and rx is ok .Then all device cant receive the host message!  Why does it happen?How to solve the problem?When two devices communicate with the host ,it works fine.

[lilong]

I fiound that when third device receive host message ,it can call 

nrf_gzll_device_tx_success

function ,but return NRF_GZLL_ERROR_CODE_ATTEMPTED_TO_FETCH_FROM_EMPTY_FIFO error code.