Feature

• feat: Update to SDK version 3.0.2 and AT version 1.7.2.0
• feat(phy): Update to phy version 1155
• feat(mbedtls): Support SSL cipher suites SSL3.0
• feat(wifi): Add Wi-Fi fast connect feature
• feat(system): Enhance the mac crc check
• feat(at): Remove SSL size check when parsing AT command
• feat(sc): Add broadcast for smartconfig
• feat(net80211): Add wme info to stay compatible to some APs
• feat(pp): Change wdt timeout to 3 seconds
• feat(system): Store Wi-Fi parameter only when it is different from the one in flash

Bug Fix

• fix(system): will not clear mac address when calling system_restore
• fix(net80211): disable greenfield option
• fix(system): incorrect parameter in flash may cause system crash
• fix: TCP data lost when the link disconnected
• fix(wpa2): fix wpa2_enterprise vulnerability issues
• fix(at): AT core may not read data in the buffer in some cases
• fix(net80211): fix the incorrect ecn parameter scanned when the router is wpa2_enterprise mode
• fix(main): fix the Wi-Fi mode change when calling set_opmode_current
• fix(at): fix wdt issue when keep sending data in high performance mode
• fix(dns): Fix the seq number overflow issue
• fix(dhcp): fix the system crash issue when Wi-Fi sta got IP by DHCP and set static IP, and DHCP release time out