This release includes:

Add support of:

• Blackpill F401CC
• Nucleo-G431KB
• Nucleo-G431RB
• Nucleo-G474RE
• STEVAL-MKSBOX1V1 (SensorTile.box)
• SharkyMKR from Midatronics
• Core Board F401RC
• Afroflight Rev 5 (8/12MHz)
• Generic STM32F103R(8/B/C/E)
• Add module RHF76-052 based on STM32L051

Extend support

• STM32F030F4 Demo board using 16MHz X-TAL or HSI.

HAL Drivers and CMSIS updated:

• STM32F1xx HAL Drivers to v1.1.4 (USB related files reverted due to a regression)
• STM32F1xx CMSIS to v4.3.1
• STM32F2xx HAL Drivers to v1.2.3
• STM32F2xx CMSIS to v2.2.2
• STM32G0xx HAL Drivers to v1.3.0
• STM32G0xx CMSIS to v1.3.0
• STM32H7xx HAL Drivers to v1.6.0
• STM32H7xx CMSIS to v1.6.0
• STM32WBxx HAL Drivers to v1.2.0
• STM32WBxx CMSIS to v1.2.0

HAL Drivers and CMSIS added:

• STM32G4xx HAL Drivers v1.1.0
• STM32G4xx CMSIS v1.1.0

Middleware updated:

• STM32 USB Host library to v3.3.3
• STM32 USB Device library to v2.5.3

Core dependencies:

• Updates STM32 Tools 1.3.1

Enhancements/improvements:

• [PinMap] Add WEAK attribute to PinMap arrays. See custom pinmap array wiki page.
• Add HardwareTimer library. See wiki
• [I2C] Harden error management
• Allow F_CPU redefinition
• [Time] delayMicroseconds() accuracy
• Add SoftwareSerial built-in library
• Allow not to have analog pin. If no analog pin required then NUM_ANALOG_INPUTS and NUM_ANALOG_FIRST could be not defined or set to respectively 0 and NUM_DIGITAL_PINS. Nevertheless, this kept ADC internal channels functional if HAL_ADC_MODULE_ENABLED still defined.
• Update Nucleo H743ZI(2) variant to use HSE

Fixes:

• [I2C] Compute timing properly. See i2c-timing wiki page.
• Fix {build.mcu} definition then library can provide a precompiled library.
• [Time] Fix ticks per ms value used to compute micros
• [USB] Fix endpoints configurations

Plus several other fixes: See 1.6.1...1.7.0

Several components libraries are available on stm32duino organization.
They are also available through the Arduino library manager. Search for STM32duino 😉