complete multi-sms
change some launch time
delete timeout for heartbeat
change some launch time
just a few modified
add if (len - 140 > 0)
add blinddata send err & write back
Merge branch 'timeout' into dev
finish wireless upgrade with ip & connect 2 specific server
complete wireless upgrade
add len > 0 && len < SERVER_IP_MAX_LEN
Merge branch 'dev'