modem: support modem facility and PPPoS

1. add support for ESP32 DTE 2. add support for SIM800/BG96 DCE 3. add PPPoS setup procedure 4. add support for SMS 5. add mqtt example after PPP connection established
2018-11-23 11:53:20 +08:00
parent 07645955a2
commit 2e1f98f8f5
18 changed files with 2713 additions and 350 deletions
@@ -0,0 +1,3 @@
+COMPONENT_ADD_INCLUDEDIRS := include
+
+COMPONENT_SRCDIRS := src