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# Release Notes for STM32L4xx_Nucleo Board Drivers Copyright 2017 STMicroelectronics
## Update History ### V2.1.0 / 16-June-2017 Main Changes stm32l4xx_nucleo.c, stm32l4xx_nucleo.h New APIs delivery to support Nucleo-64 with external SMPS BSP_SMPS_DeInit(), BSP_SMPS_Init(), BSP_SMPS_Enable(), BSP_SMPS_Disable(), BSP_SMPS_Supply_Enable (), BSP_SMPS_Supply_Disable NOTE: This release must be used with: STM32L4xx HAL driver V1.7.2 or newer ### V2.0.0 / 16-September-2015 Main Changes stm32l4xx_nucleo.c SD over SPI interface rework for Adafruit Shield usage and performance LED2 GPIO pull mode set to GPIO_NOPULL to improve power consumption Apply new GPIO speed frequency define from HAL GPIO (GPIO_SPEED_FREQ_xxxx) NOTE: This release must be used with: BSP Adafruit_Shield Component driver V2.0.0 or later STM32L4xx HAL driver V1.1.0 or later ### V1.0.0 / 26-June-2015 Main Changes First official release of STM32L4xx_Nucleo board drivers for STM32Cube L4 FW package ## License Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of STMicroelectronics nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. For complete documentation on STM32 Microcontrollers visit www.st.com/STM32