Firmware Release Candidate v1.20.0.rc0

Improvements:

• Organized ports under one directory
• Micropython v1.9.4
• Disable/enable GIL when transmitting/receiving pulses in RMT module
• Unlock the GIL while accessing queues
• Add script to build release package via makefile or script in tools
• Improving Non-Blocking sockets
• Adaption for uasyncio MicroPython library
• Exposing new Socket Options
• Major LTE module Updates
• Re-structring of Frozen folder
• Fixed Issue with memory leak in thread lock creation
• Fixed problem in antenna switch in newer esp32 chip models
• General fixes and improvements to the LoRaWAN stack
• Applied workaround for socket.connect timeout
• Added timeout option for ussl.wrap_socket to timeout SSL Handshake
• Enabled reading the value of any descriptor with standard defined 2byte UUID in BLE
• Added Bluetooth timeout parameter to bluetooth.connect()
• Added support for new LTE bands (5,8)

New Features:

• Introduced new Filesystem LittleFS
• Enabled uzlib in Micropython
• Added LightSleep functionality
• Added Dynamic filesystem functionality and new Bootmgr function in Pycom module
• Added support for RTC memory operations Read/Write
• Added Lora Mesh - openthread protocol
• Build Process now support building Pybytes firmwares via Build option VARIANT
• New Frozen Libs for LTE Sequans modem upgrades

WiFi Updates:

• Added new API to get list of STAs connected to Soft-AP
• Updated wlan_scan to include other parameters
• Added timout handling in wlan_connect + refactoring
• Added new API for setting max tx power for Wifi
• Added Set/Get API for Country configuration
• Refactored "wlan_setup" function
• Fixed Issue of ftp/telnet servers enabling when wifi_on_boot is not enabled
• Added new API wlan.joined_ap_info()
• Added API to get/set wifi protocol + updated wlan_channel to support sniffing
• Added support for setting mac addr for STA and AP
• Added API for sending Raw 80211 messages
• Added promiscuous mode