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Release_Notes.html
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<!DOCTYPE html>
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<h1 id="release-notes-forstm32l0xx-hal-drivers"><small>Release Notes for</small><mark>STM32L0xx HAL Drivers</mark></h1>
<p>Copyright © 2017 STMicroelectronics<br />
</p>
<a href="https://www.st.com" class="logo"><img src="_htmresc/st_logo_2020.png" alt="ST logo" /></a>
</center>
<h1 id="purpose">Purpose</h1>
<p>The STM32Cube HAL and LL, an STM32 abstraction layer embedded software, ensure maximized portability across STM32 portfolio.</p>
<p>The portable APIs layer provides a generic, multi instanced and simple set of APIs to interact with the upper layer (application, libraries and stacks). It is composed of native and extended APIs set. It is directly built around a generic architecture and allows the build-upon layers, like the middleware layer, to implement its functions without knowing in-depth the used STM32 device. This improves the library code reusability and guarantees an easy portability on other devices and STM32 families.</p>
<p>The Low Layer (LL) drivers are part of the STM32Cube firmware HAL that provides a basic set of optimized and one shot services. The Low layer drivers, contrary to the HAL ones are not fully portable across the STM32 families; the availability of some functions depends on the physical availability of the relative features on the product. The Low Layer (LL) drivers are designed to offer the following features:</p>
<ul>
<li>New set of inline functions for direct and atomic register access</li>
<li>One-shot operations that can be used by the HAL drivers or from application level</li>
<li>Full independence from HAL and standalone usage (without HAL drivers)</li>
<li>Full features coverage of all the supported peripherals</li>
</ul>
</div>
<div class="col-sm-12 col-lg-8">
<h1 id="update-history">Update History</h1>
<div class="collapse">
<input type="checkbox" id="collapse-section1_10_6" checked aria-hidden="true"> <label for="collapse-section1_10_6" aria-hidden="true">V1.10.6 / 27-January-2023</label>
<div>
<h2 id="main-changes">Main Changes</h2>
<ul>
<li>General updates to fix known defects and enhancements implementation.</li>
<li>HAL code quality enhancement for MISRA-C Rule-8.13 by adding const qualifiers.</li>
</ul>
<h2 id="contents">Contents</h2>
<ul>
<li><strong>HAL/LL Generic</strong> update
<ul>
<li>Allow redefinition of macro UNUSED(x).</li>
</ul></li>
<li><strong>HAL CORTEX</strong> update
<ul>
<li>Add barrier instructions in hal_cortex.c file to be compliant with ARM recommendation.</li>
</ul></li>
<li><strong>HAL GPIO</strong> update
<ul>
<li>Reorder EXTI configuration sequence in order to avoid unexpected level detection.</li>
<li>Substitute GPIO_MODER_MODE0 by GPIO_MODE_ANALOG in API HAL_GPIO_DeInit().</li>
</ul></li>
<li><strong>HAL EXTI</strong> update
<ul>
<li>Fix computation of pExtiConfig->GPIOSel in HAL_EXTI_GetConfigLine().</li>
</ul></li>
<li><strong>HAL RCC</strong> update
<ul>
<li>Complete LCD clock configuration by invoking __HAL_RCC_LCD_CONFIG() macro in HAL_RCCEx_PeriphCLKConfig().</li>
<li>Remove useless assignments of frequency in HAL_RCCEx_GetPeriphCLKFreq() API to avoid CodeSonar warning generation.</li>
</ul></li>
<li><strong>HAL FLASH</strong> update
<ul>
<li>Update the FLASH_OB_RDPConfig() function to keep reserved bits at reset value.</li>
<li>Update the HAL_FLASHEx_DATAEEPROM_Program() function to check status of write operation at the end.</li>
<li>Relocate variable pFlash and private function FLASH_PageErase() to respectively stm32l0xx_hal_flash.h and stm32l0xx_hal_flash_ex.h to avoid the generation of related MISRAC2012-Rule-8.5_b error.</li>
<li>Remove invariant TypeProgram check in HAL_FLASH_Program_IT() API to avoid generation of Code Sonar’s Redundant Condition warning.</li>
<li>A duplicated declaration of FLASH_SIZE_DATA_REGISTER macro was removed from stm32l0xx_hal_flash_ex.h to avoid generation of related MISRAC2012-Rule-5.4_c99 error.</li>
</ul></li>
<li><strong>HAL PWR</strong> update
<ul>
<li>A duplicated declaration of __HAL_PWR_PVD_EXTI_GENERATE_SWIT() macro was removed from stm32l0xx_hal_pwr.h file to avoid the generation of MISRAC2012-Rule-5.4_c99 error.</li>
</ul></li>
<li><strong>LL UTILS</strong> update
<ul>
<li>Remove useless assignment to avoid CodeSonar warning.</li>
</ul></li>
<li><strong>HAL/LL CRC</strong> update
<ul>
<li>Add filter in HAL_CRCEx_Polynomial_Set() to exclude even polynomials.</li>
<li>Update to fix STM32CubeIDE warning: overflow in conversion from ‘int’ to ‘uint8_t’.</li>
</ul></li>
<li><strong>HAL ADC</strong> update
<ul>
<li>Better performance by removing multiple volatile reads or writes in interrupt handler.</li>
</ul></li>
<li><strong>HAL DAC</strong> update
<ul>
<li>Remove reused name DAC_HandleTypeDef as struct to comply to MISRA C 2004 rule 5.3.</li>
<li>Fix incorrect word ‘surcharged’ in functions headers.</li>
</ul></li>
<li><strong>HAL/LL TIM</strong> update
<ul>
<li>Fix HAL_TIMEx_RemapConfig() lock issue: __HAL_LOCK is called before calls to assert_param().</li>
<li>__LL_TIM_CALC_PSC() macro update to round up the evaluate value when the fractional part of the division is greater than 0.5.</li>
<li>Remove useless check on IS_TIM_ADVANCED_INSTANCE() within LL_TIM_BDTR_Init() to fix Break Filter configuration problem with specific TIM instances</li>
</ul></li>
<li><strong>HAL/LL LPTIM</strong> update
<ul>
<li>Add check on PRIMASK register to prevent from enabling unwanted global interrupts within LPTIM_Disable() and LL_LPTIM_Disable().</li>
<li>Add const qualifier to comply to MISRA-C Rule-8.13.</li>
<li>Removed Lock management from callback management functions.</li>
<li>Applied same naming rules to clear FLAG related functions.</li>
<li>Improved LPTIM FSM management consistency.</li>
</ul></li>
<li><strong>HAL RTC BKP</strong> update
<ul>
<li>Move ‘clear EXTI and RTC interrupt flags’ instructions before calls to callbacks in IRQ handlers in order to better handle the case of an interruption by a higher priority IRQ.</li>
<li>Use bits definitions from CMSIS Device header file instead of hard-coded values.</li>
<li>Wrap comments to be 80-character long and correct typos.</li>
<li>Move constants RTC_IT_TAMP from hal_rtc.h to hal_rtc_ex.h.</li>
<li>Gather all instructions related to exiting the “init” mode into new function RTC_ExitInitMode().</li>
<li>Add new macro assert_param(IS_RTC_TAMPER_FILTER_CONFIG_CORRECT(sTamper->Filter, sTamper->Trigger)) to check tamper filtering is disabled in case tamper events are triggered on signal edges.</li>
<li>Rework functions HAL_RTCEx_SetTamper() and HAL_RTCEx_SetTamper_IT() to :
<ul>
<li>Write in TAMPCR register in one single access instead of two.</li>
<li>Deactivate selected TAMPER’s interrupt (besides global TAMPER interrupt).</li>
<li>Avoid activating global TAMPER interrupt.</li>
<li>Avoid modifying user structure sTamper.</li>
<li>Avoid overwriting TAMPCR register’s content on successive calls to the function.</li>
</ul></li>
<li>Check if the RTC calendar has been previously initialized before entering initialization mode.</li>
<li>Clear RSF flag using a single ‘write’ operation instead of a ‘read-modify-write’ sequence to avoid clearing other ISR flags if set in the meantime.</li>
</ul></li>
<li><strong>HAL UART</strong> update
<ul>
<li>Improve header description of UART_WaitOnFlagUntilTimeout() function.</li>
<li>Add a check on the UART parity before enabling the parity error interruption.</li>
<li>Fix wrong cast when computing the USARTDIV value in UART_SetConfig().</li>
<li>Removal of HAL_LOCK/HAL_UNLOCK calls in HAL UART Tx and Rx APIs.</li>
<li>Remove __HAL_LOCK() from HAL_xxx_RegisterCallback()/HAL_xxx_UnRegisterCallback()</li>
<li>Disable the Receiver Timeout Interrupt when data reception is completed.</li>
<li>Rework of UART_WaitOnFlagUntilTimeout() API to avoid being stuck forever when UART overrun error occurs and to enhance behavior.</li>
<li>Add a new API HAL_UARTEx_GetRxEventType() that could be used to retrieve the type of event that has led the RxEventCallback execution.</li>
</ul></li>
<li><strong>HAL SMARTCARD</strong> update
<ul>
<li>Improve header description of SMARTCARD_WaitOnFlagUntilTimeout() function.</li>
<li>Fix wrong cast when computing the USARTDIV value in SMARTCARD_SetConfig().</li>
<li>Remove __HAL_LOCK() from HAL_xxx_RegisterCallback()/HAL_xxx_UnRegisterCallback().</li>
</ul></li>
<li><strong>HAL IRDA</strong> update
<ul>
<li>Improve header description of IRDA_WaitOnFlagUntilTimeout() function.</li>
<li>Add a check on the IRDA parity before enabling the parity error interrupt.</li>
<li>Fix wrong cast when computing the USARTDIV value in IRDA_SetConfig().</li>
<li>Remove __HAL_LOCK() from HAL_xxx_RegisterCallback()/HAL_xxx_UnRegisterCallback().</li>
</ul></li>
<li><strong>HAL/LL USART</strong> update
<ul>
<li>Improve header description of USART_WaitOnFlagUntilTimeout() function.</li>
<li>Add a check on the USART parity before enabling the parity error interrupt.</li>
<li>Remove __HAL_LOCK() from HAL_xxx_RegisterCallback()/HAL_xxx_UnRegisterCallback().</li>
<li>Fix compilation warnings generated with ARMV6 compiler.</li>
</ul></li>
<li><strong>HAL TSC</strong> update
<ul>
<li>Fix missing ‘)’ at #define TSC_CTPL_4CYCLES.</li>
</ul></li>
<li><strong>HAL/LL I2C</strong> update
<ul>
<li>Update to handle errors in polling mode : Rename I2C_IsAcknowledgeFailed() to I2C_IsErrorOccurred() and correctly manage when error occurs.</li>
<li>Update to fix issue detected due to low system frequency execution (HSI).</li>
<li>Define new macro I2C_GET_DMA_REMAIN_DATA() as alias of macro __HAL_DMA_GET_COUNTER() to get remaining data to transfer by DMA for better code portability.</li>
<li>Fix timeout issue using HAL MEM interface through FreeRTOS.</li>
<li>Update I2C_IsErrorOccurred to return error if timeout is detected.</li>
<li>The ADDRF flag is cleared too early when the restart is received but the direction has changed.</li>
<li>Duplicate the test condition after timeout detection to avoid false timeout detection.</li>
<li>Improve header description of I2C_WaitOnFlagUntilTimeout() function.</li>
<li>Fix written reserved bit 28 in I2C_CR2 register.</li>
<li>Update HAL_I2C_IsDeviceReady() API to support 10_bit addressing mode.</li>
</ul></li>
<li><strong>HAL SMBUS</strong> update
<ul>
<li>Add flushing of TX register to fix issue of mismatching data received by master in case data size to be transmitted by the slave is greater than the data size to be received by the master.</li>
</ul></li>
<li><strong>HAL SPI</strong> update
<ul>
<li>Fix driver to don’t update state in case of error (HAL_SPI_STATE_READY will be set only in case of HAL_TIMEOUT).</li>
</ul></li>
<li><strong>HAL USB_FS</strong> update
<ul>
<li>Optimize HAL_PCD_IRQHandler() by removing multiple readings of ISTR register.</li>
<li>PCD: add supporting multi packets transfer on Interrupt endpoint</li>
<li>Set DCD timeout (in HAL PCD) to minimum of 300ms before starting BCD primary detection process.</li>
<li>HAL: PCD: software correction added to avoid unexpected STALL condition during EP0 multi packet OUT transfer.</li>
<li>hal_pcd.h: add a mask for USB RX bytes count</li>
<li>Add new HAL_PCD_EP_Abort() API to abort current USB endpoint transfer.</li>
</ul></li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section1_10_5" aria-hidden="true"> <label for="collapse-section1_10_5" aria-hidden="true">V1.10.5 / 16-July-2021</label>
<div>
<h2 id="main-changes-1">Main Changes</h2>
<ul>
<li>General updates to fix known defects and enhancements implementation</li>
</ul>
<h2 id="contents-1">Contents</h2>
<ul>
<li><strong>HAL</strong> updates
<ul>
<li><strong>HAL EXTI</strong> update
<ul>
<li>Update HAL_EXTI_GetConfigLine() API to set default configuration value of Trigger and GPIOSel before checking each corresponding registers.</li>
</ul></li>
<li><strong>HAL GPIO</strong> driver
<ul>
<li>Update HAL_GPIO_Init() API to avoid the configuration of PUPDR register when Analog mode is selected.</li>
</ul></li>
<li><strong>HAL ADC</strong> update
<ul>
<li>Update timeout mechanism to avoid false timeout detection in case of preemption.</li>
<li>Update LL_ADC driver to prevent unused argument compilation warning.</li>
</ul></li>
<li><strong>HAL/LL DAC</strong> update
<ul>
<li>Fix compilation error when USE_DAC_REGISTER_CALLBACKS is activated.</li>
<li>Remove ‘register’ storage class specifier from LL DAC driver.</li>
<li>Update LL_ADC_DMA_GetRegAddr() API to prevent unused argument compilation warning.</li>
<li>Update HAL timeout mechanism to avoid false timeout detection in case of preemption.</li>
</ul></li>
<li><strong>HAL IWDG</strong> update
<ul>
<li>Update HAL_IWDG_Init() API in order to fix HAL_GetTick() timeout vulnerability issue.</li>
</ul></li>
<li><strong>HAL/LL RTC</strong> update
<ul>
<li>Update __RTC_…(__HANDLE__, …) macros to access registers through (__HANDLE__)->Instance pointer and avoid “unused variable” warnings.</li>
<li>Correct month management in IS_LL_RTC_MONTH() macro.</li>
<li>Update implementations of LL_RTC_BAK_SetRegister() and LL_RTC_BAK_GetRegister() to comply to MISRAC rule 17.4.</li>
</ul></li>
<li><strong>HAL TIM</strong> update
<ul>
<li>Update HAL_TIMEx_OnePulseN_Start and HAL_TIMEx_OnePulseN_Stop (pooling and IT mode) to take into consideration all OutputChannel parameters.</li>
<li>Update input capture measurement in DMA mode to avoid zero return values at high frequencies.</li>
<li>Correct reversed description of TIM_LL_EC_ONEPULSEMODE One Pulse Mode.</li>
</ul></li>
<li><strong>HAL LPTIM</strong> update
<ul>
<li>Update HAL_LPTIM_Init implementation to configure digital filter for external clock when LPTIM is clocked by an internal clock source.</li>
</ul></li>
<li><strong>HAL I2C</strong> update
<ul>
<li>Update I2C_IsAcknowledgeFailed() API to avoid I2C in busy state if NACK received after transmitting register address.</li>
</ul></li>
<li><strong>LL USART</strong> update
<ul>
<li>Remove useless check on maximum BRR value by removing IS_LL_USART_BRR_MAX() macro.</li>
<li>Handling of UART concurrent register access in case of race condition between Tx and Rx transfers (HAL UART and LL LPUART)</li>
</ul></li>
<li><strong>HAL SMBUS</strong> update
<ul>
<li>Add the support of wake up capability.</li>
</ul></li>
<li><strong>HAL/LL SPI</strong> update
<ul>
<li>Update to fix MISRA-C 2012 Rule-13.2</li>
<li>Update LL_SPI_TransmitData8() API to avoid casting the result to 8 bits.</li>
</ul></li>
<li><strong>HAL UART</strong> update
<ul>
<li>Fix erroneous UART’s handle state in case of error returned after DMA reception start within UART_Start_Receive_DMA().</li>
<li>Correction on UART ReceptionType management in case of ReceptionToIdle API are called from RxEvent callback.</li>
<li>Handling of UART concurrent register access in case of race condition between Tx and Rx transfers (HAL UART and LL LPUART).</li>
</ul></li>
<li><strong>HAL RNG</strong> update
<ul>
<li>Update timeout mechanism to avoid false timeout detection in case of preemption.</li>
</ul></li>
<li><strong>HAL USB_FS</strong> update
<ul>
<li>HAL PCD: add fix transfer complete for IN Interrupt transaction in single buffer mode.</li>
<li>Race condition in USB PCD control endpoint receive ISR.</li>
</ul></li>
</ul></li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section1_10_4" aria-hidden="true"> <label for="collapse-section1_10_4" aria-hidden="true">V1.10.4 / 28-October-2020</label>
<div>
<h2 id="main-changes-2">Main Changes</h2>
<ul>
<li>General updates to fix known defects and enhancements implementation</li>
<li>Add new <strong>HAL EXTI</strong> driver</li>
<li>Add new <strong>HAL SMBUS extended</strong> driver to support SMBUS fast Mode Plus.</li>
<li>Remove <strong>HAL LPTIM Extended</strong> driver to move its contain to HAL LPTIM header file.</li>
<li>Correct MISRA-C 2012: Rule-10.5, Rule-10.4_a, Rule-2.7 and Rule-21.1</li>
<li>Remove useless casts</li>
</ul>
<h2 id="contents-2">Contents</h2>
<ul>
<li><strong>HAL</strong> driver
<ul>
<li>Update HAL driver to allow user to change systick period to 1ms, 10 ms or 100 ms:
<ul>
<li>Add the following new API’s :
<ul>
<li>HAL_GetTickPrio(): Returns a tick priority.</li>
<li>HAL_SetTickFreq(): Sets new tick frequency.</li>
<li>HAL_GetTickFreq(): Returns tick frequency.</li>
</ul></li>
<li>Add HAL_TickFreqTypeDef enumeration for the different Tick Frequencies: 10 Hz, 100 Hz and 1KHz (default).</li>
</ul></li>
<li>Update HAL_Init_Tick() API to proporely store the priority when using the non-default time base.</li>
<li>Add new defines for ARM compiler V6:
<ul>
<li>__weak</li>
<li>__packed</li>
<li>__NOINLINE</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL ADC</strong> update
<ul>
<li>Update HAL_ADC_Stop_DMA() API to check if DMA state is Busy before calling HAL_DMA_Abort() API to avoid DMA internal error.</li>
<li>Update LL_ADC_REG_Init() API to avoid enabling continuous mode and discontinuous mode simultaneously.</li>
</ul></li>
<li><strong>HAL/LL IWDG</strong> update
<ul>
<li>Update HAL_IWDG_DEFAULT_TIMEOUT define value to consider LSI value instead of hardcoded value</li>
</ul></li>
<li><strong>HAL/LL WWDG</strong> update
<ul>
<li>Update WWDG frequency, min and max timeout values</li>
<li>Update HAL WWDG driver description</li>
</ul></li>
<li><strong>HAL CORTEX</strong> update
<ul>
<li>Update IS_NVIC_PREEMPTION_PRIORITY macro in order to prevent PreemptPriority assert failure</li>
</ul></li>
<li><strong>HAL/LL PWR</strong> update
<ul>
<li>Reset bit ULP before entering in low power modes in case ULP=1 and EN_VREFINT = 1.
<ul>
<li>Update HAL_PWR_EnterSLEEPMode() and HAL_PWR_EnterSTOPMode() APIs</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL RTC</strong> update
<ul>
<li>Optimize HAL implementation Daylight saving feature to subtract or add one hour to the calendar in one single operation without going through the initialization procedure:
<ul>
<li>Add HAL_RTC_DST_Add1Hour(), HAL_RTC_DST_Sub1Hour(), HAL_RTC_DST_SetStoreOperation(), HAL_RTC_DST_ClearStoreOperation(), HAL_RTC_DST_ReadStoreOperation() APIs.</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL SPI</strong> update
<ul>
<li>Bug fix to support the data packing mode
<ul>
<li>Update SPI Transmit/Receive APIs with assert for 8-bit.</li>
</ul></li>
<li>Update SPI_DMAReceiveCplt() API to handle efficiently the repeated transfers.
<ul>
<li>Disable TX DMA request only in bidirectional receive mode</li>
</ul></li>
<li>Update HAL_SPI_Init() API
<ul>
<li>To avoid setting the BaudRatePrescaler in case of Slave Motorola Mode</li>
<li>Use the bit-mask for SPI configuration</li>
</ul></li>
<li>Update Transmit/Receive processes in half-duplex mode
<ul>
<li>Disable the SPI instance before setting BDIOE bit</li>
</ul></li>
<li>Fix wrong timeout management
<ul>
<li>Calculate Timeout based on a software loop to avoid blocking issue if Systick is disabled</li>
</ul></li>
<li>Update to implement Erratasheet: BSY bit may stay high at the end of a data transfer in Slave mode.</li>
</ul></li>
<li><strong>HAL/LL I2S</strong> update
<ul>
<li>Update HAL_I2S_DMAStop() API to be more safe
<ul>
<li>Add a check on BSY, TXE and RXNE flags before disabling the I2S</li>
</ul></li>
<li>Update HAL_I2S_DMAStop() API to fix multi-call transfer issue(to avoid re-initializing the I2S for the next transfer).
<ul>
<li>Add __HAL_I2SEXT_FLUSH_RX_DR() and __HAL_I2S_FLUSH_RX_DR() macros to flush the remaining data inside DR registers.</li>
<li>Add new ErrorCode define: HAL_I2S_ERROR_BUSY_LINE_RX</li>
</ul></li>
</ul></li>
<li><strong>HAL SMBUS</strong> update
<ul>
<li>Add support of Fast Mode Plus to be SMBus rev 3 compliant.
<ul>
<li>Add HAL_SMBUSEx_EnableFastModePlus() and HAL_SMBUSEx_DisableFastModePlus() APIs to manage Fm+.</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL TIM</strong> update
<ul>
<li>Add new macros to enable and disable the fast mode when using the one pulse mode to output a waveform with a minimum delay
<ul>
<li>__HAL_TIM_ENABLE_OCxFAST() and __HAL_TIM_DISABLE_OCxFAST().</li>
</ul></li>
<li>Update Encoder interface mode to keep TIM_CCER_CCxNP bits low
<ul>
<li>Add TIM_ENCODERINPUTPOLARITY_RISING and TIM_ENCODERINPUTPOLARITY_FALLING definitions to determine encoder input polarity.</li>
<li>Add IS_TIM_ENCODERINPUT_POLARITY() macro to check the encoder input polarity.</li>
<li>Update HAL_TIM_Encoder_Init() API</li>
<li>Replace IS_TIM_IC_POLARITY() macro by IS_TIM_ENCODERINPUT_POLARITY() macro.</li>
</ul></li>
<li>Update driver to handle channel state and DMA burst state independently allowing to use multiple DMA request with different channels of same timer
<ul>
<li>Introduce DMA burst state management mechanism
<ul>
<li>Add a new structure for DMA Burst States definition : HAL_TIM_DMABurstStateTypeDef</li>
<li>Update __HAL_TIM_RESET_HANDLE_STATE to support DMABurstState</li>
<li>Add a new API HAL_TIM_DMABurstState() to get the actual state of a DMA burst operation</li>
</ul></li>
<li>Add HAL_TIM_DMABurstStateTypeDef enumeration
<ul>
<li>Add DMABurstState, the DMA burst operation state, to the TIM_HandleTypeDef structure<br />
</li>
</ul></li>
<li>Implement TIM channel state management mechanism
<ul>
<li>Add new private macro
<ul>
<li>TIM_CHANNEL_STATE_SET_ALL</li>
<li>TIM_CHANNEL_STATE_SET</li>
<li>TIM_CHANNEL_STATE_GET</li>
</ul></li>
</ul></li>
<li>Add new API HAL_TIM_GetActiveChannel()
<ul>
<li>Add new API HAL_TIM_GetChannelState() to get actual state of the TIM channel</li>
<li>Add a new structure for TIM channel States definition : HAL_TIM_ChannelStateTypeDef</li>
<li>Update __HAL_TIM_RESET_HANDLE_STATE to support ChannelState</li>
</ul></li>
<li>Add HAL_TIM_ChannelStateTypeDef enumeration
<ul>
<li>Add ChannelState to the TIM_HandleTypeDef structure to manage TIM channel operation state</li>
</ul></li>
</ul></li>
<li>Update HAL_TIMEx_MasterConfigSynchronization() API to avoid functional errors and assert fails when using some TIM instances as input trigger.
<ul>
<li>Replace IS_TIM_SYNCHRO_INSTANCE() macro by IS_TIM_MASTER_INSTANCE() macro.</li>
<li>Add IS_TIM_SLAVE_INSTANCE() macro to check on TIM_SMCR_MSM bit.</li>
</ul></li>
<li>Add new API HAL_TIM_DMABurst_MultiWriteStart() allowing to configure the DMA Burst to transfer multiple Data from the memory to the TIM peripheral</li>
<li>Add new API HAL_TIM_DMABurst_MultiReadStart() allowing to configure the DMA Burst to transfer Data from the TIM peripheral to the memory</li>
<li>Remove “register” “C” keyword: The register storage class specifier was deprecated in C++11 and removed in C++17</li>
<li>Correct inverted values of LL_TIM_COUNTERMODE_CENTER_DOWN and LL_TIM_COUNTERMODE_CENTER_UP</li>
<li>Remove extra DMABurst Base Addresses not consistent with reference manual</li>
<li>Move the TIM input remapping TIM3_TI4_GPIOC9_AF2 and TIM3_TI1_GPIO definition from USB section</li>
<li>Update LL_TIM_GetCounterMode() implementation to return adequate values to the routine expected ones.</li>
</ul></li>
<li><strong>LL LPTIM</strong> update
<ul>
<li>Fix typos introduced in some comments</li>
<li>Remove useless check on LPTIM2 instance introduced in the driver not consistent with the reference manual</li>
<li>Update HAL_LPTIM_Init implementation to configure digital filter for external clock when LPTIM is clocked by an internal clock source</li>
<li>Add a polling mechanism to check on LPTIM_FLAG_XXOK flags in different API
<ul>
<li>Add LPTIM_WaitForFlag() to wait for flag set.</li>
<li>Perform new checks on HAL_LPTIM_STATE_TIMEOUT.</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL IRDA</strong> update
<ul>
<li>Align HAL IRDA driver with latest updates and enhancements</li>
<li>Optimize HAL IRDA to avoid using macros as argument of function calls</li>
<li>Update description of “HAL_IRDA_Transmit_XXX”, “HAL_IRDA_Receive_XXX” APIs with more details about the data size management</li>
</ul></li>
<li><strong>HAL/LL SMARTCARD</strong> update
<ul>
<li>Update HAL_SMARTCARD_Transmit(), HAL_SMARTCARD_Transmit_IT(), HAL_SMARTCARD_Transmit_DMA() and SMARTCARD_EndTransmit_IT() APIs implementation to fix an issue when No repetition after NACK is received in smartcard T=0</li>
<li>Optimize HAL SMARTCARD to avoid using macros as argument of function calls</li>
</ul></li>
<li><strong>HAL/LL UART</strong> update
<ul>
<li>Implementation of ReceptionToIdle reception services enhancement
<ul>
<li>Align the HAL UART driver with latest updates and enhancements to support the new enhancement of ReceptionToIdle</li>
</ul></li>
<li>Add HAL_UART_RxTypeTypeDef to the UART_HandleTypeDef structure to identify the type of ongoing Reception
<ul>
<li>HAL_UART_RECEPTION_STANDARD, HAL_UART_RECEPTION_TOIDLE, HAL_UART_RECEPTION_TORTO, HAL_UART_RECEPTION_TOCHARMATCH</li>
</ul></li>
<li>Add UART Reception Event Callback registration features
<ul>
<li>Add HAL_UART_RegisterRxEventCallback, HAL_UART_UnRegisterRxEventCallback and HAL_UARTEx_RxEventCallback APIs</li>
<li>Add pUART_RxEventCallbackTypeDef pointer to a UART Rx Event specific callback function</li>
<li>Add a set of APIs specific to Reception to Idle transfer in different mode
<ul>
<li>Add HAL_UARTEx_ReceiveToIdle API to receive an amount of data in blocking mode till either the expected number of data is received or an IDLE event occurs.</li>
</ul></li>
<li>Add HAL_UARTEx_ReceiveToIdle_IT() API to receive an amount of data in interrupt mode till either the expected number of data is received or an IDLE event occurs.</li>
<li>Add HAL_UARTEx_ReceiveToIdle_DMA() API to receive an amount of data in DMA mode till either the expected number of data is received or an IDLE event occurs.</li>
<li>Update implementation of HAL_UART_Receive(), HAL_UART_Receive_IT() and HAL_UART_Receive_DMA() to support the new enhancement of ReceptionToIdle
<ul>
<li>Add UART_Start_Receive_IT() to start Receive operation in interrupt mode</li>
<li>Add UART_Start_Receive_DMA() to start Receive operation in DMA mode.</li>
</ul></li>
</ul></li>
<li>Rework BRR register value computation in HAL_UART_Init() for code footprint size optimization</li>
<li>Update UART polling processes to handle efficiently the Lock mechanism
<ul>
<li>Move the process unlock at the top of the HAL_UART_Receive() and HAL_UART_Transmit() API.<br />
</li>
</ul></li>
<li>Add RTO (Receiver Time Out) support to UART HAL flags and IRQ macros
<ul>
<li>Add HAL_UART_ERROR_RTO define of Receiver Timeout error to the UART Error Definition section</li>
</ul></li>
<li>Add UART_FLAG_RTOF define of Receiver Timeout flag to the UART Flags section</li>
<li>Add UART_IT_RTO define of Receiver Timeout interruption to the UART interrupts definition</li>
<li>Add UART_CLEAR_RTOF define of Receiver Timeout clear flag to the UART Clear Flags section</li>
<li>Implementation of a new macro IS_UART_RECEIVER_TIMEOUT_VALUE to check the receiver timeout value</li>
<li>Add new APIs HAL_UART_DisableReceiverTimeout(), HAL_UART_DisableReceiverTimeout() to Enable/Disable the UART receiver timeout feature.</li>
<li>Add new API HAL_UART_ReceiverTimeout_Config() to update on the fly the receiver timeout value in RTOR register</li>
<li>Update HAL_UART_IRQHandler() to handle UART_ISR_RTOF flag and IT</li>
</ul></li>
<li><strong>LL LPUART</strong> update
<ul>
<li>Remove “register” “C” keyword: The register storage class specifier was deprecated in C++11 and removed in C++17</li>
<li>Align LL LPUART driver with latest updates and enhancements</li>
</ul></li>
<li><strong>HAL/LL USART</strong> update
<ul>
<li>Add RTO (Receiver Time Out) support to USART HAL flags and IRQ macros
<ul>
<li>Add HAL_USART_ERROR_RTO define of Receiver Timeout error to the USART Error Definition section</li>
</ul></li>
<li>Add USART_FLAG_RTOF define of Receiver Timeout flag to the USART Flags section</li>
<li>Add USART_CLEAR_RTOF define of Receiver Timeout clear flag to the USART Clear Flags section
<ul>
<li>Update HAL_USART_IRQHandler to add support to the Receiver Timeout Interruption</li>
</ul></li>
<li>Optimize HAL USART to avoid using macros as argument of function calls</li>
<li>Update description of “HAL_USART_Transmit_XXX”, “HAL_USART_Receive_XXX” APIs with more details about the data size management</li>
<li>Fix typos introduced in some APIs descriptions</li>
<li>Remove “register” “C” keyword: The register storage class specifier was deprecated in C++11 and removed in C++17</li>
</ul></li>
<li><strong>LL UTILS</strong> update
<ul>
<li>UTILS_SetFlashLatency() API renamed to LL_SetFlashLatency() and set exportable.</li>
</ul></li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section1_10_3" aria-hidden="true"> <label for="collapse-section1_10_3" aria-hidden="true">V1.10.3 / 07-August-2020</label>
<div>
<h2 id="main-changes-3">Main Changes</h2>
<ul>
<li>General updates to fix known defects and enhancements implementation</li>
</ul>
<h2 id="contents-3">Contents</h2>
<ul>
<li><strong>HAL Generic</strong> update
<ul>
<li>Add new template driver to configure timebase using TIMER :
<ul>
<li>stm32l0xx_hal_timebase_tim_template.c</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL GPIO</strong> update
<ul>
<li>Update GPIO initialization sequence to avoid unwanted pulse on GPIO Pin’s.</li>
<li>Update HAL_GPIO_TogglePin() API to improve robustness: allow multi Pin’s toggling</li>
</ul></li>
<li><strong>HAL/LL I2C</strong> update
<ul>
<li>Update HAL_I2C_ER_IRQHandler() API to fix acknowledge failure issue with I2C memory IT processes
<ul>
<li>Add stop condition generation when NACK occurs.</li>
</ul></li>
<li>Update I2C_DMAXferCplt(), I2C_DMAError() and I2C_DMAAbort() APIs to fix hardfault issue when hdmatx and hdmarx parameters in i2c handle aren’t initialized (NULL pointer).
<ul>
<li>Add additional check on hi2c->hdmtx and hi2c->hdmarx before resetting DMA Tx/Rx complete callbacks</li>
</ul></li>
<li>Update Sequential transfer APIs to adjust xfermode condition.
<ul>
<li>Replace hi2c->XferCount < MAX_NBYTE_SIZE by hi2c->XferCount <= MAX_NBYTE_SIZE which corresponds to a case without reload</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL USB</strong> driver
<ul>
<li>Bug fix: USB_ReadPMA() and USB_WritePMA() by ensuring 16-bits access to USB PMA memory</li>
<li>Bug fix: correct USB RX count calculation</li>
<li>Fix USB Bulk transfer double buffer mode</li>
<li>Remove register keyword from USB defined macros as no more supported by C++ compiler</li>
<li>Minor rework on USBD_Start() and USBD_Stop() APIs: stopping device will be handled by HAL_PCD_DeInit() API.</li>
<li>Remove non used API for USB device mode.</li>
</ul></li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section15" aria-hidden="true"> <label for="collapse-section15" aria-hidden="true">V1.10.2 / 22-February-2019</label>
<div>
<h2 id="main-changes-4">Main Changes</h2>
<h3 id="patch-release">Patch release</h3>
<ul>
<li>Update of <strong>HAL</strong> driver to include latest corrections and ensure compatibility with legacy code.</li>
<li>The <strong>V1.10.2</strong> version contains all the updates implemented in <strong>V1.10.1</strong> version. For more details, please refer to the History.</li>
</ul>
<h2 id="contents-4">Contents</h2>
<ul>
<li><strong>HAL </strong>
<ul>
<li>Updated HAL_GetUID() functions to correct address offset.</li>
</ul></li>
<li><strong>Legacy</strong>
<ul>
<li>Updated stm32_hal_legacy.h file to add missing definitions and ensure compatibility with legacy code.</li>
</ul></li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section14" aria-hidden="true"> <label for="collapse-section14" aria-hidden="true">V1.10.1 / 08-February-2019</label>
<div>
<h2 id="main-changes-5">Main Changes</h2>
<h3 id="patch-release-1">Patch release</h3>
<ul>
<li>Update of <strong>HAL FLASH, RCC and SPI</strong> drivers to include latest corrections</li>
</ul>
<h2 id="contents-5">Contents</h2>
<ul>
<li><strong>HAL RCC</strong>
<ul>
<li>Updated HAL_RCC_OscConfig() to add missing checks and to modify return status.</li>
</ul></li>
<li><strong>HAL FLASH</strong>
<ul>
<li>Updated HAL_FLASH_Unlock() and HAL_FLASH_OB_Unlock() to handle interrupts disabling.</li>
<li>Updated FLASH_OB_GetRDP() to return the correct RDP level.</li>
</ul></li>
<li><strong>HAL SPI</strong>
<ul>
<li>Updated HAL SPI driver to handle STM32L0 erratasheets.</li>
</ul></li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section13" aria-hidden="true"> <label for="collapse-section13" aria-hidden="true">V1.10.0 / 26-October-2018</label>
<div>
<h2 id="main-changes-6">Main Changes</h2>
<h3 id="major-maintenance-release">Major maintenance release</h3>
<ul>
<li>Add support of new <strong>L0 Value Line</strong> devices</li>
<li>Add support of <strong>HAL callback registration</strong> feature</li>
<li>Add several enhancements implementation</li>
<li>Fix known defects to be aligned with others STM32 series</li>
</ul>
<h2 id="contents-6">Contents</h2>
<ul>
<li><strong>HAL/LL generic</strong>
<ul>
<li>Add support of HAL callback registration feature
<ul>
<li>The feature disabled by default is available for the following HAL drivers:
<ul>
<li>ADC, COMP, DAC, I2C, I2S, IRDA, LPTIM, PCD, RNG, RTC, SMARTCARD, SMBUS, SPI, TIM, TSC, UART, USART and WWDG</li>
</ul></li>
<li>The feature may be enabled individually per HAL PPP driver by setting the corresponding definition USE_HAL_PPP_REGISTER_CALLBACKS to 1U in stm32l0xx_hal_conf.h project configuration file (template file stm32l0xx_hal_conf_template.h available from Drivers/STM32L0xx_HAL_Driver/Inc)</li>
<li>Once enabled, the user application may resort to HAL_PPP_RegisterCallback() to register specific callback function(s) and unregister it(them) with HAL_PPP_UnRegisterCallback().</li>
<li>Updated HAL/LL Driver compliance with MISRA C 2004 rules
<ul>
<li>MISRA C 2004 rules 10.4, 11.4, 12.4</li>
</ul></li>
<li>Updated HAL/LL Driver compliance with MISRA C 2012 rules
<ul>
<li>MISRA C 2012 rules 16.3, 17.4, 21.1</li>
</ul></li>
<li>Corrected Doxygen tags in macros description to have generate correct CHM format.</li>
<li>stm32l0xx_hal_def.h
<ul>
<li>Updated file to avoid compiler warnings from __packed definitions.</li>
<li>Updated UNUSED() macro to fix compilation warning with g++ compiler.</li>
<li>Replaced include stdio.h by stddef.h.</li>
<li>Updated __RAM_FUNC define to not impose function type.</li>
</ul></li>
<li>stm32l0xx_hal_conf_template.h
<ul>
<li>Updated default MSI_VALUE reset value set in SystemCoreClock.</li>
<li>Added USE_SPI_CRC definition to be aligned with SPI driver.</li>
</ul></li>
</ul></li>
</ul></li>
<li><strong>HAL</strong>
<ul>
<li>Added HAL_GetUIDw0(), HAL_GetUIDw1() and HAL_GetUIDw2() for 96-bit UID.</li>
<li>Modified default HAL_Delay implementation to guarantee minimum delay.</li>
</ul></li>
<li><strong>HAL/LL ADC</strong>
<ul>
<li>Updated IS_ADC_EOC_SELECTION macro (removed unused literal).</li>
<li>Updated LL_ADC_Init function to apply correct clock settings in init structure.</li>
<li>Added missing define for regular external trigger source definitions.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_ADC_RegisterCallback() and HAL_ADC_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_ADC_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL COMP</strong>
<ul>
<li>Updated HAL_COMP_Init, HAL_COMPEx_EnableVREFINT, HAL_COMPEx_DisableVREFINT functions after reintroduction of EN_VREFINT bit in SYSCFG_CFGR3 register.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_COMP_RegisterCallback() and HAL_COMP_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_COMP_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL CORTEX</strong>
<ul>
<li>Modified HAL_MPU_Enable()/HAL_MPU_Disable() functions to allow clear of the whole control register.</li>
</ul></li>
<li><strong>HAL CRC</strong>
<ul>
<li>Aligned HAL/LL CRC driver with latest updates and enhancements.</li>
<li>Updated CRC driver to remove compilation warnings.</li>
</ul></li>
<li><strong>HAL DAC</strong>
<ul>
<li>Add callback registration feature
<ul>
<li>Add HAL_DAC_RegisterCallback() and HAL_DAC_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_DAC_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL DMA</strong>
<ul>
<li>Aligned HAL/LL DMA drivers with latest updates and enhancements .</li>
</ul></li>
<li><strong>HAL FIREWALL</strong>
<ul>
<li>Ensured Non-Volatile Data Segment length is set to protect code segment.</li>
</ul></li>
<li><strong>HAL FLASH</strong>
<ul>
<li>Corrected inconsistency between HAL_Flash_Lock and HAL_Flash_Unlock.</li>
<li>Corrected __HAL_FLASH_BUFFER_CACHE_ENABLE() and __HAL_FLASH_BUFFER_CACHE_DISABLE() for FLASH Buffer cache management.</li>
<li>Updated HAL_FLASHEx_DATAEEPROM_Unlock() to protect writing of PEKEY1/PEKEY2 against interrupts.</li>
<li>Updated IS_OBEX macro to fix issue in FLASH_DualBoot Example.</li>
</ul></li>
<li><strong>LL GPIO</strong>
<ul>
<li>Renamed GPIO_AFRL_AFRLx and GPIO_AFRL_AFRHx bit to GPIO_AFRL_AFSELx.</li>
</ul></li>
<li><strong>HAL/LL I2C</strong>
<ul>
<li>Add callback registration feature
<ul>
<li>Add HAL_I2C_RegisterCallback(), HAL_I2C_UnRegisterCallback(), HAL_I2C_RegisterAddrCallback() and HAL_I2C_UnRegisterAddrCallback() APIs</li>
<li>Add callback identifiers in HAL_I2C_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
<li>Added missing cast in I2C_GET_DMA_REMAIN_DATA macro definition.</li>
<li>Updated I2C_WaitOnRXNEFlagUntilTimeout function to check I2C_FLAG_RXNE.</li>
<li>Updated comments about Device Address parameter (DevAddress) description in I2C functions header.</li>
<li>Updated IS_I2C_TRANSFER_OPTIONS_REQUEST definition by adding I2C_LAST_FRAME_NO_STOP option, which allows to call transmit or receive at any know time.</li>
<li>Added restart condition for each call of HAL_I2C_Master_Sequential_xxxx_IT.</li>
<li>Updated ErrorCode to correct wrong returned value after waiting until BUSY flag is reset.</li>
<li>Updated error management in I2C_ITSlaveCplt() function.</li>
<li>Corrected issue in HAL_I2C_Mem_Read_DMA() function.</li>
<li>Corrected issue in I2C slave when master sends RESTART instead of STOP.</li>
<li>Fix issue with clearing ADDR flag in I2C_ITSlaveCplt() function.</li>
<li>Fix MISRAC2012 issue
<ul>
<li>Renamed HAL_I2C_Master_Sequential_Transmit_IT(DMA) to HAL_I2C_Master_Seq_Transmit_IT(DMA).</li>
<li>Renamed HAL_I2C_Master_Sequential_Receive_IT(DMA) to HAL_I2C_Master_Seq_Receive_IT(DMA).</li>
<li>Renamed HAL_I2C_Slave_Sequential_Transmit_IT(DMA) to HAL_I2C_Slave_Seq_Transmit_IT(DMA).</li>
<li>Renamed HAL_I2C_Slave_Sequential_Receive_IT(DMA) to HAL_I2C_Slave_Seq_Receive_IT(DMA).</li>
</ul></li>
</ul></li>
<li><strong>HAL I2S</strong>
<ul>
<li>Aligned HAL I2S driver with latest updates and enhancements.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_I2S_RegisterCallback() and HAL_I2S_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_I2S_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL IRDA</strong>
<ul>
<li>Aligned HAL IRDA driver with latest updates and enhancements.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_IRDA_RegisterCallback() and HAL_IRDA_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_IRDA_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL LPTIM</strong>
<ul>
<li>Aligned HAL/LL LPTIM driver with updates and enhancements.</li>
<li>Corrected LL_LPTIM_TRIG_SOURCE_RTCTAMP1 and LL_LPTIM_TRIG_SOURCE_RTCTAMP3 definitions according to supported devices.</li>
<li>Corrected management of EXTI line during LPTIM wakeup</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_LPTIM_RegisterCallback() and HAL_LPTIM_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_LPTIM_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL PWR</strong>
<ul>
<li>Rename LL_PWR_IsActiveFlag_VOSF() to LL_PWR_IsActiveFlag_VOS() to be compliant with all STM32 families.</li>
<li>Updated HAL_PWR_EnterSLEEPMode() to add NOP to ensure all pending instructions are flushed before entering low power mode.</li>
</ul></li>
<li><strong>HAL RNG</strong>
<ul>
<li>Aligned HAL RNG driver with latest updates and enhancements.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_RNG_RegisterCallback(), HAL_RNG_UnRegisterCallback(), HAL_RNG_RegisterReadyDataCallback() and HAL_RNG_UnRegisterReadyDataCallback() APIs</li>
<li>Add callback identifiers in HAL_RNG_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL RCC</strong>
<ul>
<li>Updated HAL_RCC_OscConfig(), which returns HAL_ERROR to apply HSI divider 4 when HSI used as clock source.</li>
<li>Updated HAL_RCC_OscConfig() to reset HSI on state when RCC_HSI_OUTEN configuration is selected .</li>
<li>Updated value of RCC_FLAG_FWRST.</li>
<li>Changed HAL_RCC_DeInit() to HAL_StatusTypeDef.</li>
<li>Updated HAL_RCC_DeInit() and LL_RCC_DeInit() to also clear interrupts and reset flags.</li>
<li>Updated HAL_RCC_DeInit() and LL_RCC_DeInit() to add check on PLLRDY before clearing PLLCFGR register.</li>
<li>Added new LL_RCC_PLL_SetMainSource macro to set the PLL source without enabling any PLL.</li>
<li>Updated RCC_GetSystemClockFreq() by checking HSIDIVF for divider 4 when HSI is used.</li>
<li>Updated HAL_RCC_OscConfig() to not return HAL_ERROR if request repeats the current configuration.</li>
</ul></li>
<li><strong>HAL/LL RTC</strong>
<ul>
<li>Aligned HAL/LL RTC driver with latest updates and enhancements.</li>
<li>Updated RTC driver to use the bit RTC_CR_BKP instead of RTC_CR_BCK.</li>
<li>Updated implementation of LL_RTC_DATE_Get() function().</li>
<li>Corrected __HAL_RTC_TAMPER_GET_IT() macro definition.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_RTC_RegisterCallback() and HAL_RTC_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_RTC_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL SMARTCARD</strong>
<ul>
<li>Aligned HAL SMARTCARD driver with latest updates and enhancements.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_SMARTCARD_RegisterCallback() and HAL_SMARTCARD_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_SMARTCARD_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL SMBUS</strong>
<ul>
<li>Aligned HAL SMBUS driver with latest updates and enhancements.</li>
<li>Updated HAL_SMBUS_ER_IRQHandler function to manage SMBUS interrupts error handler.</li>
<li>Updated SMBUS_TransferConfig function (I2C_CR2 register update).</li>
<li>Updated comments about Device Address parameter (DevAddress) description in SMBUS functions header.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_SMBUS_RegisterCallback(), HAL_SMBUS_UnRegisterCallback(), HAL_SMBUS_RegisterAddrCallback() and HAL_SMBUS_UnRegisterAddrCallback() APIs</li>
<li>Add callback identifiers in HAL_SMBUS_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL SPI</strong>
<ul>
<li>Aligned HAL/LL SPI driver with latest updates and enhancements.</li>
<li>Fixed issue in HAL_SPI_Transmit() and HAL_SPI_TransmitReceive() functions.</li>
<li>Removed define LL_SPI_SR_UDR which available only for I2S feature.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_SPI_RegisterCallback() and HAL_SPI_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_SPI_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL TIM</strong>
<ul>
<li>Aligned L0 HAL/LL TIM driver with latest updates and enhancements.</li>
<li>Fixed error in LL_TIM_EnableUpdateEvent, LL_TIM_DisableUpdateEvent functions.</li>
<li>Updated comments in HAL/LL functions to describe how to switch from Center Aligned counter mode to Edge Aligned Down mode.</li>
<li>Corrected offset definitions (TIM_DMABASE_DMAR, TIM_DMABASE_OR) for burst access.</li>
<li>Updated HAL_TIM_OnePulse_xxx functions to prevent unused argument(s) compilation warnings.</li>
<li>Add support of preload control in HAL TIM API.</li>
<li>Removed usage of STM32L0 device compilation switch in remap constant and HAL_TIMEx_RemapConfig definitions.</li>
<li>Remove reference to TIMx_SMCR.OCCS related constants/functions, not supported by L0 series.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_TIM_RegisterCallback() and HAL_TIM_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_TIM_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL TSC</strong>
<ul>
<li>Aligned HAL TSC driver with latest updates and enhancements.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_TSC_RegisterCallback() and HAL_TSC_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_TSC_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>HAL/LL UART/USART/LPUART</strong>
<ul>
<li>Aligned HAL UART/USART/LPUART drivers with latest updates and enhancements.</li>
<li>Aligned __HAL_UART_GET_IT and __HAL_UART_GET_IT_SOURCE macros with others series.</li>
<li>Add missing HAL_UARTEx_EnableClockStopMode() function.</li>
<li>Add callback registration feature
<ul>
<li>Add HAL_UART_RegisterCallback() and HAL_UART_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_UART_CallbackIDTypeDef enumerated typedef</li>
<li>Add HAL_USART_RegisterCallback() and HAL_USART_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_USART_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
<li><strong>LL UTILS</strong>
<ul>
<li>Corrected LL_GetUID_Word2 function to fix error in UID flash location.</li>
<li>Fixed mismatch return type in LL_GetPackageType(void).</li>
<li>Update UTILS_MAX_FREQUENCY_SCALE3 value.</li>
</ul></li>
<li><strong>HAL USB</strong>
<ul>
<li>Aligned HAL USB driver with latest updates and enhancements.</li>
<li>Upgrade to USB Device Library v2.5.1.</li>
</ul></li>
<li><strong>HAL WWDG</strong>
<ul>
<li>ligned HAL WWDG driver with latest updates and enhancements.</li>
<li>dd callback registration feature
<ul>
<li>Add HAL_WWDG_RegisterCallback() and HAL_WWDG_UnRegisterCallback() APIs</li>
<li>Add callback identifiers in HAL_WWDG_CallbackIDTypeDef enumerated typedef</li>
</ul></li>
</ul></li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section12" aria-hidden="true"> <label for="collapse-section12" aria-hidden="true">V1.9.0 / 12-January-2018</label>
<div>
<h2 id="main-changes-7">Main Changes</h2>
<h3 id="internal-release">Internal release</h3>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section11" aria-hidden="true"> <label for="collapse-section11" aria-hidden="true">V1.8.2 / 25-August-2017</label>
<div>
<h2 id="main-changes-8">Main Changes</h2>
<h3 id="maintenance-release">Maintenance release</h3>
<h2 id="contents-7">Contents</h2>
<ul>
<li><strong>HAL/LL generic</strong>
<ul>
<li>Updated :</li>
<li>Removed DATE and VERSION fields from header files.</li>
<li>Updated CHM User Manual for Drivers/STM32L0xx_HAL_Driver.</li>
</ul></li>
<li><strong>LL ADC</strong>
<ul>
<li>Updated LL ADC driver to exclude __LL_ADC_CALC_TEMPERATURE macro for STM32L011xx devices.</li>
</ul></li>
<li><strong>HAL COMP</strong>
<ul>
<li>Updated HAL_COMP_Init manage default case as LPTIM1 for COMP1 and LPTIM2 for COMP2.</li>
</ul></li>
<li><strong>HAL/LL I2C</strong>
<ul>
<li>Replaced POSITION val notion by associated I2C_xxx_pos CMSIS definition.</li>
<li>Updated LL_I2C_Init() function to add condition to test the value of OwnAddress1 before calling the inline LL function LL_I2C_EnableOwnAddress1().</li>
<li>Updated implementation of I2C_TransferConfig() function.</li>
</ul></li>
<li><strong>HAL PCD</strong>
<ul>
<li>Removed the lock/unlock from HAL_PCD_EP_Receive/HAL_PCD_EP_Transmit functions.</li>
</ul></li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section10" aria-hidden="true"> <label for="collapse-section10" aria-hidden="true">V1.8.1 / 14-April-2017</label>
<div>
<h2 id="main-changes-9">Main Changes</h2>
<h3 id="patch-release-2">Patch release</h3>
<h2 id="contents-8">Contents</h2>
<ul>
<li><strong>HAL LCD</strong>
<ul>
<li>Update of stm32l0xx_hal_lcd.h to avoid C++ compilation errors.</li>
</ul></li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section9" aria-hidden="true"> <label for="collapse-section9" aria-hidden="true">V1.8.0 / 25-November-2016</label>