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Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_uart_ex.c')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_uart_ex.c | 445 |
1 files changed, 445 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_uart_ex.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_uart_ex.c new file mode 100644 index 0000000000..2ae1b15e87 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_uart_ex.c @@ -0,0 +1,445 @@ +/** + ****************************************************************************** + * @file stm32l0xx_hal_uart_ex.c + * @author MCD Application Team + * @version V1.2.0 + * @date 06-February-2015 + * @brief Extended UART HAL module driver. + * + * This file provides firmware functions to manage the following + * functionalities of the Inter Integrated Circuit (UART) peripheral: + * + Extended Control methods + * + @verbatim + ============================================================================== + ##### UART peripheral extended features ##### + ============================================================================== + + [..] Comparing to other previous devices, the UART interface for STM32L0XX + devices contains the following additional features + + (+) Possibility to disable or enable Analog Noise Filter + (+) Use of a configured Digital Noise Filter + (+) Disable or enable wakeup from Stop mode + + ##### How to use this driver ##### + ============================================================================== + [..] This driver provides functions to configure Noise Filter + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. 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. + * 3. 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. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32l0xx_hal.h" + +/** @addtogroup STM32L0xx_HAL_Driver + * @{ + */ + +/** @addtogroup UARTEx + * @brief UARTEx module driver + * @{ + */ + +#ifdef HAL_UART_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#define UART_REACK_TIMEOUT ((uint32_t) 1000) +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +static void UART_Wakeup_AddressConfig(UART_HandleTypeDef *huart, UART_WakeUpTypeDef WakeUpSelection); +/* Private functions ---------------------------------------------------------*/ + +/** @addtogroup UARTEx_Exported_Functions + * @{ + */ + +/** @addtogroup UARTEx_Exported_Functions_Group1 + * @brief Extended Initialization and Configuration Functions + + * +@verbatim +=============================================================================== + ##### Initialization and Configuration functions ##### + =============================================================================== + [..] + The HAL_RS485Ex_Init() API follows respectively the UART RS485 mode + configuration procedures (details for the procedures are available in reference manual). + +@endverbatim + * @{ + */ + +/** + * @brief Initializes the RS485 Driver enable feature according to the specified + * parameters in the UART_InitTypeDef and creates the associated handle . + * @param huart: uart handle + * @param Polarity: select the driver enable polarity + * This parameter can be one of the following values: + * @arg UART_DE_POLARITY_HIGH: DE signal is active high + * @arg UART_DE_POLARITY_LOW: DE signal is active low + * @param AssertionTime: Driver Enable assertion time + * 5-bit value defining the time between the activation of the DE (Driver Enable) + * signal and the beginning of the start bit. It is expressed in sample time + * units (1/8 or 1/16 bit time, depending on the oversampling rate) + * @param DeassertionTime: Driver Enable deassertion time + * 5-bit value defining the time between the end of the last stop bit, in a + * transmitted message, and the de-activation of the DE (Driver Enable) signal. + * It is expressed in sample time units (1/8 or 1/16 bit time, depending on the + * oversampling rate). + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RS485Ex_Init(UART_HandleTypeDef *huart, uint32_t Polarity, uint32_t AssertionTime, uint32_t DeassertionTime) +{ + uint32_t temp = 0x0; + + /* Check the UART handle allocation */ + if(huart == NULL) + { + return HAL_ERROR; + } + + /* Check the Driver Enable polarity */ + assert_param(IS_UART_DE_POLARITY(Polarity)); + + /* Check the Driver Enable assertion time */ + assert_param(IS_UART_ASSERTIONTIME(AssertionTime)); + + /* Check the Driver Enable deassertion time */ + assert_param(IS_UART_DEASSERTIONTIME(DeassertionTime)); + + if(huart->State == HAL_UART_STATE_RESET) + { + /* Init the low level hardware : GPIO, CLOCK, CORTEX */ + HAL_UART_MspInit(huart); + } + + huart->State = HAL_UART_STATE_BUSY; + + /* Disable the Peripheral */ + __HAL_UART_DISABLE(huart); + + /* Set the UART Communication parameters */ + UART_SetConfig(huart); + + if(huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT) + { + UART_AdvFeatureConfig(huart); + } + + /* Enable the Driver Enable mode by setting the DEM bit in the CR3 register */ + huart->Instance->CR3 |= USART_CR3_DEM; + + /* Set the Driver Enable polarity */ + MODIFY_REG(huart->Instance->CR3, USART_CR3_DEP, Polarity); + + /* Set the Driver Enable assertion and deassertion times */ + temp = (AssertionTime << UART_CR1_DEAT_ADDRESS_LSB_POS); + temp |= (DeassertionTime << UART_CR1_DEDT_ADDRESS_LSB_POS); + MODIFY_REG(huart->Instance->CR1, (USART_CR1_DEDT|USART_CR1_DEAT), temp); + + /* Enable the Peripheral */ + __HAL_UART_ENABLE(huart); + + /* TEACK and/or REACK to check before moving huart->State to Ready */ + return (UART_CheckIdleState(huart)); +} + + +/** + * @} + */ + +/** @addtogroup UARTEx_Exported_Functions_Group2 + * @brief management functions + * +@verbatim + =============================================================================== + ##### Peripheral Control funtions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) UART_AdvFeatureConfig() API optionally configures the UART advanced features + (+) HAL_MultiProcessorEx_AddressLength_Set() API optionally sets the UART node address + detection length to more than 4 bits for multiprocessor address mark wake up. + (+) HAL_UARTEx_EnableStopMode() API enables the UART to wake up the MCU from stop mode + (+) HAL_UARTEx_DisableStopMode() API disables the above functionality + (+) HAL_UARTEx_EnableClockStopMode() API enables the UART HSI clock during stop mode + (+) HAL_UARTEx_DisableClockStopMode() API disables the above functionality + (+) UART_Wakeup_AddressConfig() API configures the wake-up from stop mode parameters + +@endverbatim + * @{ + */ + +/** + * @brief Enable UART Stop Mode + * The UART is able to wake up the MCU from Stop mode as long as UART clock is HSI or LSE + * @param huart: uart handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_UARTEx_EnableStopMode(UART_HandleTypeDef *huart) +{ + /* Process Locked */ + __HAL_LOCK(huart); + + huart->State = HAL_UART_STATE_BUSY; + + /* Set the USART UESM bit */ + huart->Instance->CR1 |= USART_CR1_UESM; + + huart->State = HAL_UART_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(huart); + + return HAL_OK; +} + +/** + * @brief Enable UART Clock in Stop Mode + * The UART keeps the Clock ON during Stop mode + * @param huart: uart handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_UARTEx_EnableClockStopMode(UART_HandleTypeDef *huart) +{ + /* Process Locked */ + __HAL_LOCK(huart); + + huart->State = HAL_UART_STATE_BUSY; + + /* Set the USART UESM bit */ + huart->Instance->CR3 |= USART_CR3_UCESM; + + huart->State = HAL_UART_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(huart); + + return HAL_OK; +} + +/** + * @brief Disable UART Stop Mode + * @param huart: uart handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_UARTEx_DisableStopMode(UART_HandleTypeDef *huart) +{ + /* Process Locked */ + __HAL_LOCK(huart); + + huart->State = HAL_UART_STATE_BUSY; + + /* Clear USART UESM bit */ + huart->Instance->CR1 &= ~(USART_CR1_UESM); + + huart->State = HAL_UART_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(huart); + + return HAL_OK; +} + +/** + * @brief Disable UART Clock in Stop Mode + * @param huart: uart handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_UARTEx_DisableClockStopMode(UART_HandleTypeDef *huart) +{ + /* Process Locked */ + __HAL_LOCK(huart); + + huart->State = HAL_UART_STATE_BUSY; + + /* Clear USART UESM bit */ + huart->Instance->CR3 &= ~(USART_CR3_UCESM); + + huart->State = HAL_UART_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(huart); + + return HAL_OK; +} + +/** + * @brief Set Wakeup from Stop mode interrupt flag selection + * @param huart: uart handle, + * @param WakeUpSelection: address match, Start Bit detection or RXNE bit status. + * This parameter can be one of the following values: + * @arg UART_WAKEUP_ON_ADDRESS + * @arg UART_WAKEUP_ON_STARTBIT + * @arg UART_WAKEUP_ON_READDATA_NONEMPTY + * @retval HAL status + */ +HAL_StatusTypeDef HAL_UARTEx_StopModeWakeUpSourceConfig(UART_HandleTypeDef *huart, UART_WakeUpTypeDef WakeUpSelection) +{ + + /* check the wake-up from stop mode UART instance */ + assert_param(IS_UART_WAKEUP_FROMSTOP_INSTANCE(huart->Instance)); + /* Check the wake-up selection parameter */ + assert_param(IS_UART_WAKEUP_SELECTION(WakeUpSelection.WakeUpEvent)); + + /* Process Locked */ + __HAL_LOCK(huart); + + huart->State = HAL_UART_STATE_BUSY; + + /* Disable the Peripheral */ + __HAL_UART_DISABLE(huart); + + /* Set the wake-up selection scheme */ + MODIFY_REG(huart->Instance->CR3, USART_CR3_WUS, WakeUpSelection.WakeUpEvent); + + if(WakeUpSelection.WakeUpEvent == UART_WAKEUP_ON_ADDRESS) + { + UART_Wakeup_AddressConfig(huart, WakeUpSelection); + } + + /* Enable the Peripheral */ + __HAL_UART_ENABLE(huart); + + /* Wait until REACK flag is set before moving huart->State to Ready */ + if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_REACK, RESET, UART_REACK_TIMEOUT) != HAL_OK) + { + return HAL_TIMEOUT; + } + + /* Process Unlocked */ + __HAL_UNLOCK(huart); + + /* Initialize the UART state*/ + huart->ErrorCode = HAL_UART_ERROR_NONE; + huart->State= HAL_UART_STATE_READY; + + return HAL_OK; +} +/** + * @brief By default in multiprocessor mode, when the wake up method is set + * to address mark, the UART handles only 4-bit long addresses detection. + * This API allows to enable longer addresses detection (6-, 7- or 8-bit + * long): + * - 6-bit address detection in 7-bit data mode + * - 7-bit address detection in 8-bit data mode + * - 8-bit address detection in 9-bit data mode + * @param huart: UART handle + * @param AddressLength: this parameter can be one of the following values: + * @arg UART_ADDRESS_DETECT_4B: 4-bit long address + * @arg UART_ADDRESS_DETECT_7B: 6-, 7- or 8-bit long address + * @retval HAL status + */ +HAL_StatusTypeDef HAL_MultiProcessorEx_AddressLength_Set(UART_HandleTypeDef *huart, uint32_t AddressLength) +{ + /* Check the UART handle allocation */ + if(huart == NULL) + { + return HAL_ERROR; + } + + /* Check the address length parameter */ + assert_param(IS_UART_ADDRESSLENGTH_DETECT(AddressLength)); + + huart->State = HAL_UART_STATE_BUSY; + + /* Disable the Peripheral */ + __HAL_UART_DISABLE(huart); + + /* Set the address length */ + MODIFY_REG(huart->Instance->CR2, USART_CR2_ADDM7, AddressLength); + + /* Enable the Peripheral */ + __HAL_UART_ENABLE(huart); + + /* TEACK and/or REACK to check before moving huart->State to Ready */ + return (UART_CheckIdleState(huart)); +} + +/** + * @} + */ + +/** + * @brief Initializes the UART wake-up from stop mode parameters when triggered by address detection. + * @param huart: uart handle + * @param WakeUpSelection: UART wake up from stop mode parameters + * @retval HAL status + */ +static void UART_Wakeup_AddressConfig(UART_HandleTypeDef *huart, UART_WakeUpTypeDef WakeUpSelection) +{ + assert_param(IS_UART_ADDRESSLENGTH_DETECT(WakeUpSelection.AddressLength)); + if(WakeUpSelection.AddressLength == UART_ADDRESS_DETECT_4B) + { + assert_param(IS_UART_4B_ADDRESS(WakeUpSelection.Address)); + } + else + { + assert_param(IS_UART_7B_ADDRESS(WakeUpSelection.Address)); + } + + /* Set the USART address length */ + MODIFY_REG(huart->Instance->CR2, USART_CR2_ADDM7, WakeUpSelection.AddressLength); + + /* Set the USART address node */ + MODIFY_REG(huart->Instance->CR2, USART_CR2_ADD, ((uint32_t)WakeUpSelection.Address << UART_CR2_ADDRESS_LSB_POS)); +} + +/** + * @brief UART wakeup from Stop mode callback + * @param huart: uart handle + * @retval None + */ + __weak void HAL_UARTEx_WakeupCallback(UART_HandleTypeDef *huart) +{ + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_UART_WakeupCallback can be implemented in the user file + */ +} + +/** + * @} + */ + +#endif /* HAL_UART_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ + |