VCON firmware changelog, see https://vcon.io

2.1.5 @ 2023-11-17
- Added support for Ethernet SPI chips
- Increased max CLI input size 512 -> 2048

2.1.5 @ 2023-10-14
- Fixed UART0 IO
- Added SWD RAM arch for OTA updates
- Added support for 128k-page STM32 flashes (H7)
- Added preliminary NXP RT1020 OTA support

2.1.4 @ 2023-09-17
- Fixed BLE reporting
- Ability to set DNS and SNTP servers from DHCP, $.device.{dns,sntp}
- Automatic config file snapshotting on successful cloud connect
- Automatic config file restoring on cloud connect failure for 30 seconds
- STM32 reflashing over UART fixed - disabling $.uart.delim during reflash
- Added 8k flash page STM32 arch (H5)
- Added $.tcp.url - an ability to forward UART data to the TCP server
- Added `ls` and `save` CLI commands

2.1.3 @ 2023-07-18
- Enhanced sys.log RPC
- SWD API bugfixes
- Ethernet event handler fixed

2.1.2 @ 2023-05-24
- Fixed UART data forwarding
- Added $.uart.delim and $.uart.crc for reliable message passing
- Added Websocket ping/pong for user-defined websocket connection

2.1.1 @ 2023-04-01
- Added $.http.mode and HTTP serving
- Added $.wifi.sta.{ip,gw,mask} for static IP configuration

2.1.0 @ 2023-03-03
- Moved $.host.{uart,swd,spi} config settings to $.
- Added $.i2c.{sda,clk,freq} for I2C support
- Added rpc/i2c.{scan,exec} RPC functions
- Fixed EERASE handling in STM32 serial bootloader

2.0.11 @ 2023-02-26
- Fixed GPIO handling for pins > 31
- Added $.host.uart.delim setting, for recognising UART message boundaries
- Added $.host.uart.crc setting, for checksumming UART messages

2.0.10 @ 2023-02-22
- More reliable Host/ESP32 UART comms

2.0.9 @ 2023-02-03
- Last Host firmware MD5 amd timestamp is stored in cloud device state
- Not performing OTA if MD5 hashes are equal
- Displaying Host MD5 hash and timestamp in the dashboard
- Changes to $.host.uart settings are applied immediately, no reboot required
- Change to $.debug.level is applied immediately, no reboot required
- Added $.host.uart.mode with stop bit and parity support

2.0.8 @ 2023-01-22
- STM32 serial reflasher made per-page instead of total erase
- $.host.rst and $.host.boot0 initialised after ESP32 boot

2.0.7 @ 2023-01-17
- Make mcu.reset prefer $.host.rst if it is configured
- Added support for TI MCUs
- Added support STM32 bootloader-based (serial), non-SWD reflash

2.0.6 @ 2022-12-30
- ESP32C3 build
- Updated networking, TLS code
- Disabling RPC over BLE for provisioned devices
- Allowing all RPCs on un-provisioned devices
- Added CLI mode for UART-based configuration

2.0.5 @ 2022-08-30
- Auto-disabling BLE and HTTP RPC channels after cloud provisioning
- Added JS support, based on https://github.com/cesanta/elk engine
- Auto-executing main.js file on boot - if it is present
- Fixed MQTT / RPC mode issue
- Changed Ethernet settings: added rst and phy, removed pwr and clk
- Support Ethenet PHYs, 0: LAN8720, 1: ip101, 2: rtl8201, 3: dp83848, 4: ksz80xx

2.0.4 @ 2022-06-19
- Fixed issue with UART / MQTT bridge
- Fixed TLS handshake handling
- Fixed SNTP race issue
- Fixed backtrace reporting

2.0.3 @ 2021-10-11
- Added cellular modem support

2.0.2 @ 2021-06-25
- Added Mega128A support
- Added LAN8720 functionality back
- Added $.device.dns tunable for setting DNS manually, e.g. udp://1.2.3.4:53
- Fixed mbedtls disconnection issue

2.0.1 @ 2021-04-18
- Support for Raspberry RP2040 reflashing
- Added "swd.write" RPC for bulk writing into target memory
- Added "rr,N" and "wr,N,N" swd.exec commands for reading and writing core regs
- Fixed $.pins.* logic for pin 0
- Added initial UPDI support and $.host.updi.{pin,dur} parameters

2.0.0 @ 2021-04-02
- Better WiFi reconnection logic
- Protection from VCON OTA failures - rollback if can't connect to the cloud
- Report current config when connected to the cloud
- Ethernet LAN8720 functionality being temporarily removed

1.4.24 @ 2021-03-08
- Added RAM check to the RPC handlers to prevent OOM
- Added allocation granularity to RPC allocator to decrease fragmentation

1.4.23 @ 2021-01-27
- Added http.request RPC call, that adds ability to send HTTP requests
- Fixes in the factory reset procedure

1.4.22 @ 2021-01-18
- Host MCU reset improved by resetting init.txt to the factory defaults
- VCON-D51 init.txt flashes a bootloader
- Added websocket bridge, with $.ws config section
- Added hexdump options for $.dash, $.mqtt, $.ws sections for connection debug

1.4.21 @ 2020-12-12
- AVR reset logic enhanced
- Added $.device.board string var - an arbitrary hardware board description
- Added wifi.scan RPC call for scanning available WiFi networks

1.4.20 @ 2020-11-05
- Corrections in SWD reflashing functionality for ATSAM microcontrollers
- Send RPC events to the Host MCU only if host.mode == 1
- Fixed "cli mkhex" command to allow arbitrary .bin file order
- Added "cli mkfs" command for creating FS SPIFFS images
- Allow .bin OTA updates in addition to .hex
- Added $.host.addr configuration option for .bin firmware OTA updates, which
specifies .bin firmware offset in flash memory
- Added Host MCU auto-configuration via the init.txt file

1.4.19 @ 2020-10-09
- Changed max console log buffer size 512->1024 bytes
- Added ability to send RPC requests through the VCON UART
- UART polling code does not wait if there is no data to read


1.4.18 @ 2020-09-09
- Fixed HTTP configuration in Access Point mode
- Added `backtrace` attribute to the `sys.info` response, which shows a
crash backtrace for the last firmware crash. Allows to remotely debug
crashed devices. Also, that attribute was added to the `state` device
object on the cloud: that allows to access the backtrace even if a device
is not currently connected