forked from espressif/esp-idf
use eventgroup to sync spp_vfs_write each connection has a switch_delay_timer not sharing a one revert functions like spp_find_slot_by_xxx fix vfs read bug when peer close
use eventgroup to sync spp_vfs_write each connection has a switch_delay_timer not sharing a one revert functions like spp_find_slot_by_xxx fix vfs read bug when peer close