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diff Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_i2s_ex.c @ 128:c78bcbd5deda FlipDisplay
Added current STM32 standandard libraries in version independend folder structure
author | Ideenmodellierer |
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date | Sun, 17 Feb 2019 21:12:22 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_i2s_ex.c Sun Feb 17 21:12:22 2019 +0100 @@ -0,0 +1,1184 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_i2s_ex.c + * @author MCD Application Team + * @brief I2S HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of I2S extension peripheral: + * + Extension features Functions + * + @verbatim + ============================================================================== + ##### I2S Extension features ##### + ============================================================================== + [..] + (#) In I2S full duplex mode, each SPI peripheral is able to manage sending and receiving + data simultaneously using two data lines. Each SPI peripheral has an extended block + called I2Sxext (i.e I2S2ext for SPI2 and I2S3ext for SPI3). + (#) The extension block is not a full SPI IP, it is used only as I2S slave to + implement full duplex mode. The extension block uses the same clock sources + as its master. + + (#) Both I2Sx and I2Sx_ext can be configured as transmitters or receivers. + + [..] + (@) Only I2Sx can deliver SCK and WS to I2Sx_ext in full duplex mode, where + I2Sx can be I2S2 or I2S3. + + ##### How to use this driver ##### + =============================================================================== + [..] + Three operation modes are available within this driver : + + *** Polling mode IO operation *** + ================================= + [..] + (+) Send and receive in the same time an amount of data in blocking mode using HAL_I2SEx_TransmitReceive() + + *** Interrupt mode IO operation *** + =================================== + [..] + (+) Send and receive in the same time an amount of data in non blocking mode using HAL_I2SEx_TransmitReceive_IT() + (+) At transmission/reception end of transfer HAL_I2SEx_TxRxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2SEx_TxRxCpltCallback + (+) In case of transfer Error, HAL_I2S_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2S_ErrorCallback + + *** DMA mode IO operation *** + ============================== + [..] + (+) Send and receive an amount of data in non blocking mode (DMA) using HAL_I2SEx_TransmitReceive_DMA() + (+) At transmission/reception end of transfer HAL_I2SEx_TxRxCpltCallback is executed and user can + add his own code by customization of function pointer HAL_I2S_TxRxCpltCallback + (+) In case of transfer Error, HAL_I2S_ErrorCallback() function is executed and user can + add his own code by customization of function pointer HAL_I2S_ErrorCallback + @endverbatim + + Additional Figure: The Extended block uses the same clock sources as its master. + + +-----------------------+ + I2Sx_SCK | | + ----------+-->| I2Sx |------------------->I2Sx_SD(in/out) + +--|-->| | + | | +-----------------------+ + | | + I2S_WS | | + ------>| | + | | +-----------------------+ + | +-->| | + | | I2Sx_ext |------------------->I2Sx_extSD(in/out) + +----->| | + +-----------------------+ + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2017 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 "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ + +#ifdef HAL_I2S_MODULE_ENABLED + +/** @defgroup I2SEx I2SEx + * @brief I2S Extended HAL module driver + * @{ + */ + +#if defined (SPI_I2S_FULLDUPLEX_SUPPORT) + +/* Private typedef -----------------------------------------------------------*/ +/** @defgroup I2SEx_Private_Typedef I2S Extended Private Typedef + * @{ + */ +typedef enum +{ + I2S_USE_I2S = 0x00U, /*!< I2Sx should be used */ + I2S_USE_I2SEXT = 0x01U, /*!< I2Sx_ext should be used */ +}I2S_UseTypeDef; +/** + * @} + */ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @defgroup I2SEx_Private_Functions I2S Extended Private Functions + * @{ + */ +static void I2SEx_TxRxDMAHalfCplt(DMA_HandleTypeDef *hdma); +static void I2SEx_TxRxDMACplt(DMA_HandleTypeDef *hdma); +static void I2SEx_TxRxDMAError(DMA_HandleTypeDef *hdma); +static void I2SEx_FullDuplexTx_IT(I2S_HandleTypeDef *hi2s, I2S_UseTypeDef i2sUsed); +static void I2SEx_FullDuplexRx_IT(I2S_HandleTypeDef *hi2s, I2S_UseTypeDef i2sUsed); +static HAL_StatusTypeDef I2SEx_FullDuplexWaitFlagStateUntilTimeout(I2S_HandleTypeDef *hi2s, uint32_t Flag, + uint32_t State, uint32_t Timeout, I2S_UseTypeDef i2sUsed); +/** + * @} + */ + +/** + * @} + */ + +/* Private functions ---------------------------------------------------------*/ +/* Exported functions --------------------------------------------------------*/ + +/** @addtogroup I2SEx I2SEx + * @{ + */ + +/** @addtogroup I2SEx_Exported_Functions I2S Extended Exported Functions + * @{ + */ + +/** @defgroup I2SEx_Exported_Functions_Group1 I2S Extended IO operation functions + * @brief I2SEx IO operation functions + * +@verbatim + =============================================================================== + ##### IO operation functions##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to manage the I2S data + transfers. + + (#) There are two modes of transfer: + (++) Blocking mode : The communication is performed in the polling mode. + The status of all data processing is returned by the same function + after finishing transfer. + (++) No-Blocking mode : The communication is performed using Interrupts + or DMA. These functions return the status of the transfer startup. + The end of the data processing will be indicated through the + dedicated I2S IRQ when using Interrupt mode or the DMA IRQ when + using DMA mode. + + (#) Blocking mode functions are : + (++) HAL_I2SEx_TransmitReceive() + + (#) No-Blocking mode functions with Interrupt are : + (++) HAL_I2SEx_TransmitReceive_IT() + (++) HAL_I2SEx_FullDuplex_IRQHandler() + + (#) No-Blocking mode functions with DMA are : + (++) HAL_I2SEx_TransmitReceive_DMA() + + (#) A set of Transfer Complete Callback are provided in non Blocking mode: + (++) HAL_I2SEx_TxRxCpltCallback() +@endverbatim + * @{ + */ +/** + * @brief Full-Duplex Transmit/Receive data in blocking mode. + * @param hi2s pointer to a I2S_HandleTypeDef structure that contains + * the configuration information for I2S module + * @param pTxData a 16-bit pointer to the Transmit data buffer. + * @param pRxData a 16-bit pointer to the Receive data buffer. + * @param Size number of data sample to be sent: + * @note When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S + * configuration phase, the Size parameter means the number of 16-bit data length + * in the transaction and when a 24-bit data frame or a 32-bit data frame is selected + * the Size parameter means the number of 16-bit data length. + * @param Timeout Timeout duration + * @note The I2S is kept enabled at the end of transaction to avoid the clock de-synchronization + * between Master and Slave(example: audio streaming). + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2SEx_TransmitReceive(I2S_HandleTypeDef *hi2s, uint16_t *pTxData, uint16_t *pRxData, + uint16_t Size, uint32_t Timeout) +{ + uint32_t tmp1 = 0U; + + if((pTxData == NULL ) || (pRxData == NULL ) || (Size == 0U)) + { + return HAL_ERROR; + } + + /* Check the I2S State */ + if(hi2s->State == HAL_I2S_STATE_READY) + { + tmp1 = hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN); + /* Check the Data format: When a 16-bit data frame or a 16-bit data frame extended + is selected during the I2S configuration phase, the Size parameter means the number + of 16-bit data length in the transaction and when a 24-bit data frame or a 32-bit data + frame is selected the Size parameter means the number of 16-bit data length. */ + if((tmp1 == I2S_DATAFORMAT_24B) || (tmp1 == I2S_DATAFORMAT_32B)) + { + hi2s->TxXferSize = (Size << 1U); + hi2s->TxXferCount = (Size << 1U); + hi2s->RxXferSize = (Size << 1U); + hi2s->RxXferCount = (Size << 1U); + } + else + { + hi2s->TxXferSize = Size; + hi2s->TxXferCount = Size; + hi2s->RxXferSize = Size; + hi2s->RxXferCount = Size; + } + + /* Process Locked */ + __HAL_LOCK(hi2s); + + hi2s->ErrorCode = HAL_I2S_ERROR_NONE; + + /* Set the I2S State busy TX/RX */ + hi2s->State = HAL_I2S_STATE_BUSY_TX_RX; + + tmp1 = hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG; + /* Check if the I2S_MODE_MASTER_TX or I2S_MODE_SLAVE_TX Mode is selected */ + if((tmp1 == I2S_MODE_MASTER_TX) || (tmp1 == I2S_MODE_SLAVE_TX)) + { + /* Prepare the First Data before enabling the I2S */ + hi2s->Instance->DR = (*pTxData++); + hi2s->TxXferCount--; + + /* Enable I2Sext(receiver) before enabling I2Sx peripheral */ + __HAL_I2SEXT_ENABLE(hi2s); + + /* Enable I2Sx peripheral */ + __HAL_I2S_ENABLE(hi2s); + + /* Check if Master Receiver mode is selected */ + if((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_MASTER_TX) + { + /* Clear the Overrun Flag by a read operation on the SPI_DR register followed by a read + access to the SPI_SR register. */ + __HAL_I2SEXT_CLEAR_OVRFLAG(hi2s); + } + + while((hi2s->RxXferCount > 0U) || (hi2s->TxXferCount > 0U)) + { + if(hi2s->TxXferCount > 0U) + { + /* Wait until TXE flag is set */ + if (I2SEx_FullDuplexWaitFlagStateUntilTimeout(hi2s, I2S_FLAG_TXE, SET, Timeout, I2S_USE_I2S) != HAL_OK) + { + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode, HAL_I2S_ERROR_TIMEOUT); + HAL_I2S_ErrorCallback(hi2s); + return HAL_TIMEOUT; + } + /* Write Data on DR register */ + hi2s->Instance->DR = (*pTxData++); + hi2s->TxXferCount--; + + /* Check if an underrun occurs */ + if((__HAL_I2S_GET_FLAG(hi2s, I2S_FLAG_UDR) == SET) && (tmp1 == I2S_MODE_SLAVE_TX)) + { + /* Clear Underrun flag */ + __HAL_I2S_CLEAR_UDRFLAG(hi2s); + + /* Set the I2S State ready */ + hi2s->State = HAL_I2S_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2s); + + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_UDR); + HAL_I2S_ErrorCallback(hi2s); + + return HAL_ERROR; + } + } + if(hi2s->RxXferCount > 0U) + { + /* Wait until RXNE flag is set */ + if (I2SEx_FullDuplexWaitFlagStateUntilTimeout(hi2s, I2S_FLAG_RXNE, SET, Timeout, I2S_USE_I2SEXT) != HAL_OK) + { + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_TIMEOUT); + HAL_I2S_ErrorCallback(hi2s); + return HAL_TIMEOUT; + } + /* Read Data from DR register */ + (*pRxData++) = I2SxEXT(hi2s->Instance)->DR; + hi2s->RxXferCount--; + + /* Check if an overrun occurs */ + if(__HAL_I2SEXT_GET_FLAG(hi2s, I2S_FLAG_OVR) == SET) + { + /* Clear Overrun flag */ + __HAL_I2S_CLEAR_OVRFLAG(hi2s); + + /* Set the I2S State ready */ + hi2s->State = HAL_I2S_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2s); + + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_OVR); + HAL_I2S_ErrorCallback(hi2s); + + return HAL_ERROR; + } + } + } + } + /* The I2S_MODE_MASTER_RX or I2S_MODE_SLAVE_RX Mode is selected */ + else + { + /* Prepare the First Data before enabling the I2S */ + I2SxEXT(hi2s->Instance)->DR = (*pTxData++); + hi2s->TxXferCount--; + + /* Enable I2Sext(transmitter) after enabling I2Sx peripheral */ + __HAL_I2SEXT_ENABLE(hi2s); + + /* Enable I2S peripheral before the I2Sext*/ + __HAL_I2S_ENABLE(hi2s); + + /* Check if Master Receiver mode is selected */ + if((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_MASTER_RX) + { + /* Clear the Overrun Flag by a read operation on the SPI_DR register followed by a read + access to the SPI_SR register. */ + __HAL_I2S_CLEAR_OVRFLAG(hi2s); + } + + while((hi2s->RxXferCount > 0U) || (hi2s->TxXferCount > 0U)) + { + if(hi2s->TxXferCount > 0U) + { + /* Wait until TXE flag is set */ + if (I2SEx_FullDuplexWaitFlagStateUntilTimeout(hi2s, I2S_FLAG_TXE, SET, Timeout, I2S_USE_I2SEXT) != HAL_OK) + { + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_TIMEOUT); + HAL_I2S_ErrorCallback(hi2s); + return HAL_TIMEOUT; + } + /* Write Data on DR register */ + I2SxEXT(hi2s->Instance)->DR = (*pTxData++); + hi2s->TxXferCount--; + + /* Check if an underrun occurs */ + if((__HAL_I2SEXT_GET_FLAG(hi2s, I2S_FLAG_UDR) == SET) && (tmp1 == I2S_MODE_SLAVE_RX)) + { + /* Clear Underrun flag */ + __HAL_I2S_CLEAR_UDRFLAG(hi2s); + + /* Set the I2S State ready */ + hi2s->State = HAL_I2S_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2s); + + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_UDR); + HAL_I2S_ErrorCallback(hi2s); + + return HAL_ERROR; + } + } + if(hi2s->RxXferCount > 0U) + { + /* Wait until RXNE flag is set */ + if (I2SEx_FullDuplexWaitFlagStateUntilTimeout(hi2s, I2S_FLAG_RXNE, SET, Timeout, I2S_USE_I2S) != HAL_OK) + { + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_TIMEOUT); + HAL_I2S_ErrorCallback(hi2s); + return HAL_TIMEOUT; + } + /* Read Data from DR register */ + (*pRxData++) = hi2s->Instance->DR; + hi2s->RxXferCount--; + + /* Check if an overrun occurs */ + if(__HAL_I2S_GET_FLAG(hi2s, I2S_FLAG_OVR) == SET) + { + /* Clear Overrun flag */ + __HAL_I2S_CLEAR_OVRFLAG(hi2s); + + /* Set the I2S State ready */ + hi2s->State = HAL_I2S_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2s); + + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_OVR); + HAL_I2S_ErrorCallback(hi2s); + + return HAL_ERROR; + } + } + } + } + + /* Set the I2S State ready */ + hi2s->State = HAL_I2S_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2s); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Full-Duplex Transmit/Receive data in non-blocking mode using Interrupt + * @param hi2s pointer to a I2S_HandleTypeDef structure that contains + * the configuration information for I2S module + * @param pTxData a 16-bit pointer to the Transmit data buffer. + * @param pRxData a 16-bit pointer to the Receive data buffer. + * @param Size number of data sample to be sent: + * @note When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S + * configuration phase, the Size parameter means the number of 16-bit data length + * in the transaction and when a 24-bit data frame or a 32-bit data frame is selected + * the Size parameter means the number of 16-bit data length. + * @note The I2S is kept enabled at the end of transaction to avoid the clock de-synchronization + * between Master and Slave(example: audio streaming). + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2SEx_TransmitReceive_IT(I2S_HandleTypeDef *hi2s, uint16_t *pTxData, uint16_t *pRxData, + uint16_t Size) +{ + uint32_t tmp1 = 0U; + + if(hi2s->State == HAL_I2S_STATE_READY) + { + if((pTxData == NULL ) || (pRxData == NULL ) || (Size == 0U)) + { + return HAL_ERROR; + } + + hi2s->pTxBuffPtr = pTxData; + hi2s->pRxBuffPtr = pRxData; + + tmp1 = hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN); + /* Check the Data format: When a 16-bit data frame or a 16-bit data frame extended + is selected during the I2S configuration phase, the Size parameter means the number + of 16-bit data length in the transaction and when a 24-bit data frame or a 32-bit data + frame is selected the Size parameter means the number of 16-bit data length. */ + if((tmp1 == I2S_DATAFORMAT_24B) || (tmp1 == I2S_DATAFORMAT_32B)) + { + hi2s->TxXferSize = (Size << 1U); + hi2s->TxXferCount = (Size << 1U); + hi2s->RxXferSize = (Size << 1U); + hi2s->RxXferCount = (Size << 1U); + } + else + { + hi2s->TxXferSize = Size; + hi2s->TxXferCount = Size; + hi2s->RxXferSize = Size; + hi2s->RxXferCount = Size; + } + + /* Process Locked */ + __HAL_LOCK(hi2s); + + hi2s->ErrorCode = HAL_I2S_ERROR_NONE; + hi2s->State = HAL_I2S_STATE_BUSY_TX_RX; + + tmp1 = hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG; + /* Check if the I2S_MODE_MASTER_TX or I2S_MODE_SLAVE_TX Mode is selected */ + if((tmp1 == I2S_MODE_MASTER_TX) || (tmp1 == I2S_MODE_SLAVE_TX)) + { + /* Enable I2Sext RXNE and ERR interrupts */ + __HAL_I2SEXT_ENABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); + + /* Enable I2Sx TXE and ERR interrupts */ + __HAL_I2S_ENABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + + /* Check if the I2S is already enabled */ + if((hi2s->Instance->I2SCFGR &SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE) + { + if((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_SLAVE_TX) + { + /* Prepare the First Data before enabling the I2S */ + if(hi2s->TxXferCount != 0U) + { + /* Transmit First data */ + hi2s->Instance->DR = (*hi2s->pTxBuffPtr++); + hi2s->TxXferCount--; + + if(hi2s->TxXferCount == 0U) + { + /* Disable TXE and ERR interrupt */ + __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + + if(hi2s->RxXferCount == 0U) + { + /* Disable I2Sext RXNE and ERR interrupt */ + __HAL_I2SEXT_DISABLE_IT(hi2s, (I2S_IT_RXNE| I2S_IT_ERR)); + + hi2s->State = HAL_I2S_STATE_READY; + HAL_I2SEx_TxRxCpltCallback(hi2s); + } + } + } + } + /* Enable I2Sext(receiver) before enabling I2Sx peripheral */ + __HAL_I2SEXT_ENABLE(hi2s); + + /* Enable I2Sx peripheral */ + __HAL_I2S_ENABLE(hi2s); + } + } + /* The I2S_MODE_MASTER_RX or I2S_MODE_SLAVE_RX Mode is selected */ + else + { + /* Enable I2Sext TXE and ERR interrupts */ + __HAL_I2SEXT_ENABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + + /* Enable I2Sext RXNE and ERR interrupts */ + __HAL_I2S_ENABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); + + /* Check if the I2S is already enabled */ + if((hi2s->Instance->I2SCFGR &SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE) + { + /* Check if the I2S_MODE_MASTER_RX is selected */ + if((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_MASTER_RX) + { + /* Prepare the First Data before enabling the I2S */ + if(hi2s->TxXferCount != 0U) + { + /* Transmit First data */ + I2SxEXT(hi2s->Instance)->DR = (*hi2s->pTxBuffPtr++); + hi2s->TxXferCount--; + + if(hi2s->TxXferCount == 0U) + { + /* Disable I2Sext TXE and ERR interrupt */ + __HAL_I2SEXT_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + if(hi2s->RxXferCount == 0U) + { + /* Disable RXNE and ERR interrupt */ + __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_RXNE| I2S_IT_ERR)); + + hi2s->State = HAL_I2S_STATE_READY; + HAL_I2SEx_TxRxCpltCallback(hi2s); + } + } + } + } + /* Enable I2Sext(transmitter) after enabling I2Sx peripheral */ + __HAL_I2SEXT_ENABLE(hi2s); + + /* Enable I2S peripheral */ + __HAL_I2S_ENABLE(hi2s); + } + } + /* Process Unlocked */ + __HAL_UNLOCK(hi2s); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief Full-Duplex Transmit/Receive data in non-blocking mode using DMA + * @param hi2s pointer to a I2S_HandleTypeDef structure that contains + * the configuration information for I2S module + * @param pTxData a 16-bit pointer to the Transmit data buffer. + * @param pRxData a 16-bit pointer to the Receive data buffer. + * @param Size number of data sample to be sent: + * @note When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S + * configuration phase, the Size parameter means the number of 16-bit data length + * in the transaction and when a 24-bit data frame or a 32-bit data frame is selected + * the Size parameter means the number of 16-bit data length. + * @note The I2S is kept enabled at the end of transaction to avoid the clock de-synchronization + * between Master and Slave(example: audio streaming). + * @retval HAL status + */ +HAL_StatusTypeDef HAL_I2SEx_TransmitReceive_DMA(I2S_HandleTypeDef *hi2s, uint16_t *pTxData, uint16_t *pRxData, + uint16_t Size) +{ + uint32_t *tmp = NULL; + uint32_t tmp1 = 0U; + + if((pTxData == NULL ) || (pRxData == NULL ) || (Size == 0U)) + { + return HAL_ERROR; + } + + if(hi2s->State == HAL_I2S_STATE_READY) + { + hi2s->pTxBuffPtr = pTxData; + hi2s->pRxBuffPtr = pRxData; + + tmp1 = hi2s->Instance->I2SCFGR & (SPI_I2SCFGR_DATLEN | SPI_I2SCFGR_CHLEN); + /* Check the Data format: When a 16-bit data frame or a 16-bit data frame extended + is selected during the I2S configuration phase, the Size parameter means the number + of 16-bit data length in the transaction and when a 24-bit data frame or a 32-bit data + frame is selected the Size parameter means the number of 16-bit data length. */ + if((tmp1 == I2S_DATAFORMAT_24B) || (tmp1 == I2S_DATAFORMAT_32B)) + { + hi2s->TxXferSize = (Size << 1U); + hi2s->TxXferCount = (Size << 1U); + hi2s->RxXferSize = (Size << 1U); + hi2s->RxXferCount = (Size << 1U); + } + else + { + hi2s->TxXferSize = Size; + hi2s->TxXferCount = Size; + hi2s->RxXferSize = Size; + hi2s->RxXferCount = Size; + } + + /* Process Locked */ + __HAL_LOCK(hi2s); + + hi2s->ErrorCode = HAL_I2S_ERROR_NONE; + hi2s->State = HAL_I2S_STATE_BUSY_TX_RX; + + /* Set the I2S Rx DMA Half transfer complete callback */ + hi2s->hdmarx->XferHalfCpltCallback = I2SEx_TxRxDMAHalfCplt; + + /* Set the I2S Rx DMA transfer complete callback */ + hi2s->hdmarx->XferCpltCallback = I2SEx_TxRxDMACplt; + + /* Set the I2S Rx DMA error callback */ + hi2s->hdmarx->XferErrorCallback = I2SEx_TxRxDMAError; + + /* Set the I2S Tx DMA Half transfer complete callback */ + hi2s->hdmatx->XferHalfCpltCallback = I2SEx_TxRxDMAHalfCplt; + + /* Set the I2S Tx DMA transfer complete callback */ + hi2s->hdmatx->XferCpltCallback = I2SEx_TxRxDMACplt; + + /* Set the I2S Tx DMA error callback */ + hi2s->hdmatx->XferErrorCallback = I2SEx_TxRxDMAError; + + tmp1 = hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG; + /* Check if the I2S_MODE_MASTER_TX or I2S_MODE_SLAVE_TX Mode is selected */ + if((tmp1 == I2S_MODE_MASTER_TX) || (tmp1 == I2S_MODE_SLAVE_TX)) + { + /* Enable the Rx DMA Stream */ + tmp = (uint32_t*)&pRxData; + HAL_DMA_Start_IT(hi2s->hdmarx, (uint32_t)&I2SxEXT(hi2s->Instance)->DR, *(uint32_t*)tmp, hi2s->RxXferSize); + + /* Enable Rx DMA Request */ + SET_BIT(I2SxEXT(hi2s->Instance)->CR2,SPI_CR2_RXDMAEN); + + /* Enable the Tx DMA Stream */ + tmp = (uint32_t*)&pTxData; + HAL_DMA_Start_IT(hi2s->hdmatx, *(uint32_t*)tmp, (uint32_t)&hi2s->Instance->DR, hi2s->TxXferSize); + + /* Enable Tx DMA Request */ + SET_BIT(hi2s->Instance->CR2,SPI_CR2_TXDMAEN); + + /* Check if the I2S is already enabled */ + if((hi2s->Instance->I2SCFGR &SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE) + { + /* Enable I2Sext(receiver) before enabling I2Sx peripheral */ + __HAL_I2SEXT_ENABLE(hi2s); + + /* Enable I2S peripheral after the I2Sext */ + __HAL_I2S_ENABLE(hi2s); + } + } + else + { + /* Check if Master Receiver mode is selected */ + if((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_MASTER_RX) + { + /* Clear the Overrun Flag by a read operation on the SPI_DR register followed by a read + access to the SPI_SR register. */ + __HAL_I2S_CLEAR_OVRFLAG(hi2s); + } + /* Enable the Tx DMA Stream */ + tmp = (uint32_t*)&pTxData; + HAL_DMA_Start_IT(hi2s->hdmatx, *(uint32_t*)tmp, (uint32_t)&I2SxEXT(hi2s->Instance)->DR, hi2s->TxXferSize); + + /* Enable Tx DMA Request */ + SET_BIT(I2SxEXT(hi2s->Instance)->CR2,SPI_CR2_TXDMAEN); + + /* Enable the Rx DMA Stream */ + tmp = (uint32_t*)&pRxData; + HAL_DMA_Start_IT(hi2s->hdmarx, (uint32_t)&hi2s->Instance->DR, *(uint32_t*)tmp, hi2s->RxXferSize); + + /* Enable Rx DMA Request */ + SET_BIT(hi2s->Instance->CR2,SPI_CR2_RXDMAEN); + + /* Check if the I2S is already enabled */ + if((hi2s->Instance->I2SCFGR &SPI_I2SCFGR_I2SE) != SPI_I2SCFGR_I2SE) + { + /* Enable I2Sext(transmitter) before enabling I2Sx peripheral */ + __HAL_I2SEXT_ENABLE(hi2s); + /* Enable I2S peripheral before the I2Sext */ + __HAL_I2S_ENABLE(hi2s); + } + } + + /* Process Unlocked */ + __HAL_UNLOCK(hi2s); + + return HAL_OK; + } + else + { + return HAL_BUSY; + } +} + +/** + * @brief This function handles I2S/I2Sext interrupt requests in full-duplex mode. + * @param hi2s I2S handle + * @retval HAL status + */ +void HAL_I2SEx_FullDuplex_IRQHandler(I2S_HandleTypeDef *hi2s) +{ + __IO uint32_t i2ssr = hi2s->Instance->SR ; + __IO uint32_t i2sextsr = I2SxEXT(hi2s->Instance)->SR; + + /* Check if the I2S_MODE_MASTER_TX or I2S_MODE_SLAVE_TX Mode is selected */ + if (((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_MASTER_TX) + || ((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_SLAVE_TX)) + { + /* I2S in mode Transmitter -------------------------------------------------*/ + if(((i2ssr & I2S_FLAG_TXE) == I2S_FLAG_TXE) && (__HAL_I2S_GET_IT_SOURCE(hi2s, I2S_IT_TXE) != RESET)) + { + /* When the I2S mode is configured as I2S_MODE_MASTER_TX or I2S_MODE_SLAVE_TX, + the I2S TXE interrupt will be generated to manage the full-duplex transmit phase. */ + I2SEx_FullDuplexTx_IT(hi2s, I2S_USE_I2S); + } + + /* I2Sext in mode Receiver -----------------------------------------------*/ + if(((i2sextsr & I2S_FLAG_RXNE) == I2S_FLAG_RXNE) && (__HAL_I2SEXT_GET_IT_SOURCE(hi2s, I2S_IT_RXNE) != RESET)) + { + /* When the I2S mode is configured as I2S_MODE_MASTER_TX or I2S_MODE_SLAVE_TX, + the I2Sext RXNE interrupt will be generated to manage the full-duplex receive phase. */ + I2SEx_FullDuplexRx_IT(hi2s, I2S_USE_I2SEXT); + } + + /* I2Sext Overrun error interrupt occured --------------------------------*/ + if(((i2sextsr & I2S_FLAG_OVR) == I2S_FLAG_OVR) && (__HAL_I2SEXT_GET_IT_SOURCE(hi2s, I2S_IT_ERR) != RESET)) + { + /* Disable RXNE and ERR interrupt */ + __HAL_I2SEXT_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); + + /* Disable TXE and ERR interrupt */ + __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + + /* Clear Overrun flag */ + __HAL_I2S_CLEAR_OVRFLAG(hi2s); + + /* Set the I2S State ready */ + hi2s->State = HAL_I2S_STATE_READY; + + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_OVR); + HAL_I2S_ErrorCallback(hi2s); + } + + /* I2S Underrun error interrupt occured ----------------------------------*/ + if(((i2ssr & I2S_FLAG_UDR) == I2S_FLAG_UDR) && (__HAL_I2S_GET_IT_SOURCE(hi2s, I2S_IT_ERR) != RESET)) + { + /* Disable TXE and ERR interrupt */ + __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + + /* Disable RXNE and ERR interrupt */ + __HAL_I2SEXT_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); + + /* Clear underrun flag */ + __HAL_I2S_CLEAR_UDRFLAG(hi2s); + + /* Set the I2S State ready */ + hi2s->State = HAL_I2S_STATE_READY; + + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_UDR); + HAL_I2S_ErrorCallback(hi2s); + } + } + /* The I2S_MODE_MASTER_RX or I2S_MODE_SLAVE_RX Mode is selected */ + else + { + /* I2Sext in mode Transmitter ----------------------------------------------*/ + if(((i2sextsr & I2S_FLAG_TXE) == I2S_FLAG_TXE) && (__HAL_I2SEXT_GET_IT_SOURCE(hi2s, I2S_IT_TXE) != RESET)) + { + /* When the I2S mode is configured as I2S_MODE_MASTER_RX or I2S_MODE_SLAVE_RX, + the I2Sext TXE interrupt will be generated to manage the full-duplex transmit phase. */ + I2SEx_FullDuplexTx_IT(hi2s, I2S_USE_I2SEXT); + } + + /* I2S in mode Receiver --------------------------------------------------*/ + if(((i2ssr & I2S_FLAG_RXNE) == I2S_FLAG_RXNE) && (__HAL_I2S_GET_IT_SOURCE(hi2s, I2S_IT_RXNE) != RESET)) + { + /* When the I2S mode is configured as I2S_MODE_MASTER_RX or I2S_MODE_SLAVE_RX, + the I2S RXNE interrupt will be generated to manage the full-duplex receive phase. */ + I2SEx_FullDuplexRx_IT(hi2s, I2S_USE_I2S); + } + + /* I2S Overrun error interrupt occured -------------------------------------*/ + if(((i2ssr & I2S_FLAG_OVR) == I2S_FLAG_OVR) && (__HAL_I2S_GET_IT_SOURCE(hi2s, I2S_IT_ERR) != RESET)) + { + /* Disable RXNE and ERR interrupt */ + __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); + + /* Disable TXE and ERR interrupt */ + __HAL_I2SEXT_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + + /* Set the I2S State ready */ + hi2s->State = HAL_I2S_STATE_READY; + + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_OVR); + HAL_I2S_ErrorCallback(hi2s); + } + + /* I2Sext Underrun error interrupt occured -------------------------------*/ + if(((i2sextsr & I2S_FLAG_UDR) == I2S_FLAG_UDR) && (__HAL_I2SEXT_GET_IT_SOURCE(hi2s, I2S_IT_ERR) != RESET)) + { + /* Disable TXE and ERR interrupt */ + __HAL_I2SEXT_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + + /* Disable RXNE and ERR interrupt */ + __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); + + /* Set the I2S State ready */ + hi2s->State = HAL_I2S_STATE_READY; + + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_UDR); + HAL_I2S_ErrorCallback(hi2s); + } + } +} + +/** + * @brief Tx and Rx Transfer half completed callback + * @param hi2s I2S handle + * @retval None + */ +__weak void HAL_I2SEx_TxRxHalfCpltCallback(I2S_HandleTypeDef *hi2s) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2s); + + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_I2SEx_TxRxHalfCpltCallback could be implemented in the user file + */ +} + +/** + * @brief Tx and Rx Transfer completed callback + * @param hi2s I2S handle + * @retval None + */ +__weak void HAL_I2SEx_TxRxCpltCallback(I2S_HandleTypeDef *hi2s) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hi2s); + + /* NOTE : This function Should not be modified, when the callback is needed, + the HAL_I2SEx_TxRxCpltCallback could be implemented in the user file + */ +} + +/** + * @} + */ + +/** + * @} + */ + +/** @addtogroup I2SEx_Private_Functions I2S Extended Private Functions + * @{ + */ + +/** + * @brief DMA I2S transmit receive process half complete callback + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void I2SEx_TxRxDMAHalfCplt(DMA_HandleTypeDef *hdma) +{ + I2S_HandleTypeDef* hi2s = (I2S_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + HAL_I2SEx_TxRxHalfCpltCallback(hi2s); +} + +/** + * @brief DMA I2S transmit receive process complete callback + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA module. + * @retval None + */ +static void I2SEx_TxRxDMACplt(DMA_HandleTypeDef *hdma) +{ + I2S_HandleTypeDef* hi2s = (I2S_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent; + + /* if DMA is not configured in DMA_CIRCULAR mode */ + if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) + { + if (hi2s->hdmarx == hdma) + { + /* Disable Rx DMA Request */ + if (((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_MASTER_TX) ||\ + ((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_SLAVE_TX)) + { + CLEAR_BIT(I2SxEXT(hi2s->Instance)->CR2,SPI_CR2_RXDMAEN); + } + else + { + CLEAR_BIT(hi2s->Instance->CR2,SPI_CR2_RXDMAEN); + } + + hi2s->RxXferCount = 0U; + + if (hi2s->TxXferCount == 0U) + { + hi2s->State = HAL_I2S_STATE_READY; + + HAL_I2SEx_TxRxCpltCallback(hi2s); + } + } + + if (hi2s->hdmatx == hdma) + { + /* Disable Tx DMA Request */ + if (((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_MASTER_TX) ||\ + ((hi2s->Instance->I2SCFGR & SPI_I2SCFGR_I2SCFG) == I2S_MODE_SLAVE_TX)) + { + CLEAR_BIT(hi2s->Instance->CR2,SPI_CR2_TXDMAEN); + } + else + { + CLEAR_BIT(I2SxEXT(hi2s->Instance)->CR2,SPI_CR2_TXDMAEN); + } + + hi2s->TxXferCount = 0U; + + if (hi2s->RxXferCount == 0U) + { + hi2s->State = HAL_I2S_STATE_READY; + + HAL_I2SEx_TxRxCpltCallback(hi2s); + } + } + } +} + +/** + * @brief DMA I2S communication error callback + * @param hdma DMA handle + * @retval None + */ +static void I2SEx_TxRxDMAError(DMA_HandleTypeDef *hdma) +{ + I2S_HandleTypeDef* hi2s = ( I2S_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; + + /* Disable Rx and Tx DMA Request */ + CLEAR_BIT(hi2s->Instance->CR2,(SPI_CR2_RXDMAEN | SPI_CR2_TXDMAEN)); + CLEAR_BIT(I2SxEXT(hi2s->Instance)->CR2,(SPI_CR2_RXDMAEN | SPI_CR2_TXDMAEN)); + + hi2s->TxXferCount = 0U; + hi2s->RxXferCount = 0U; + + hi2s->State= HAL_I2S_STATE_READY; + + /* Set the error code and execute error callback*/ + SET_BIT(hi2s->ErrorCode,HAL_I2S_ERROR_DMA); + HAL_I2S_ErrorCallback(hi2s); +} + +/** + * @brief Full-Duplex IT handler transmit function + * @param hi2s I2S handle + * @param i2sUsed indicate if I2Sx or I2Sx_ext is concerned + * @retval None + */ +static void I2SEx_FullDuplexTx_IT(I2S_HandleTypeDef *hi2s, I2S_UseTypeDef i2sUsed) +{ + if(i2sUsed == I2S_USE_I2S) + { + /* Write Data on DR register */ + hi2s->Instance->DR = (*hi2s->pTxBuffPtr++); + hi2s->TxXferCount--; + + if(hi2s->TxXferCount == 0U) + { + /* Disable TXE and ERR interrupt */ + __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + + if(hi2s->RxXferCount == 0U) + { + hi2s->State = HAL_I2S_STATE_READY; + HAL_I2SEx_TxRxCpltCallback(hi2s); + } + } + } + else + { + /* Write Data on DR register */ + I2SxEXT(hi2s->Instance)->DR = (*hi2s->pTxBuffPtr++); + hi2s->TxXferCount--; + + if(hi2s->TxXferCount == 0U) + { + /* Disable I2Sext TXE and ERR interrupt */ + __HAL_I2SEXT_DISABLE_IT(hi2s, (I2S_IT_TXE | I2S_IT_ERR)); + + if(hi2s->RxXferCount == 0U) + { + hi2s->State = HAL_I2S_STATE_READY; + HAL_I2SEx_TxRxCpltCallback(hi2s); + } + } + } +} + +/** + * @brief Full-Duplex IT handler receive function + * @param hi2s I2S handle + * @param i2sUsed indicate if I2Sx or I2Sx_ext is concerned + * @retval None + */ +static void I2SEx_FullDuplexRx_IT(I2S_HandleTypeDef *hi2s, I2S_UseTypeDef i2sUsed) +{ + if(i2sUsed == I2S_USE_I2S) + { + /* Read Data from DR register */ + (*hi2s->pRxBuffPtr++) = hi2s->Instance->DR; + hi2s->RxXferCount--; + + if(hi2s->RxXferCount == 0U) + { + /* Disable RXNE and ERR interrupt */ + __HAL_I2S_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); + + if(hi2s->TxXferCount == 0U) + { + hi2s->State = HAL_I2S_STATE_READY; + HAL_I2SEx_TxRxCpltCallback(hi2s); + } + } + } + else + { + /* Read Data from DR register */ + (*hi2s->pRxBuffPtr++) = I2SxEXT(hi2s->Instance)->DR; + hi2s->RxXferCount--; + + if(hi2s->RxXferCount == 0U) + { + /* Disable I2Sext RXNE and ERR interrupt */ + __HAL_I2SEXT_DISABLE_IT(hi2s, (I2S_IT_RXNE | I2S_IT_ERR)); + + if(hi2s->TxXferCount == 0U) + { + hi2s->State = HAL_I2S_STATE_READY; + HAL_I2SEx_TxRxCpltCallback(hi2s); + } + } + } +} + +/** + * @brief This function handles I2S Communication Timeout. + * @param hi2s I2S handle + * @param Flag Flag checked + * @param State Value of the flag expected + * @param Timeout Duration of the timeout + * @param i2sUsed I2S instance reference + * @retval HAL status + */ +static HAL_StatusTypeDef I2SEx_FullDuplexWaitFlagStateUntilTimeout(I2S_HandleTypeDef *hi2s, uint32_t Flag, + uint32_t State, uint32_t Timeout, I2S_UseTypeDef i2sUsed) +{ + uint32_t tickstart = HAL_GetTick(); + + if(i2sUsed == I2S_USE_I2S) + { + /* Wait until flag is reset */ + while(((__HAL_I2S_GET_FLAG(hi2s, Flag)) ? SET : RESET) != State) + { + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout)) + { + /* Set the I2S State ready */ + hi2s->State= HAL_I2S_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2s); + + return HAL_TIMEOUT; + } + } + } + } + else /* i2sUsed == I2S_USE_I2SEXT */ + { + /* Wait until flag is reset */ + while(((__HAL_I2SEXT_GET_FLAG(hi2s, Flag)) ? SET : RESET) != State) + { + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout)) + { + /* Set the I2S State ready */ + hi2s->State= HAL_I2S_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hi2s); + + return HAL_TIMEOUT; + } + } + } + } + return HAL_OK; +} + +/** + * @} + */ +#endif /* SPI_I2S_FULLDUPLEX_SUPPORT */ + +/** + * @} + */ +#endif /* HAL_I2S_MODULE_ENABLED */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/