diff options
Diffstat (limited to 'drivers/fsl_i2c_edma.h')
| -rw-r--r-- | drivers/fsl_i2c_edma.h | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/drivers/fsl_i2c_edma.h b/drivers/fsl_i2c_edma.h index c95d6ad..40cb648 100644 --- a/drivers/fsl_i2c_edma.h +++ b/drivers/fsl_i2c_edma.h @@ -1,6 +1,6 @@ /* * Copyright (c) 2015, Freescale Semiconductor, Inc. - * All rights reserved. + * Copyright 2016-2017 NXP * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: @@ -12,7 +12,7 @@ * list of conditions and the following disclaimer in the documentation and/or * other materials provided with the distribution. * - * o Neither the name of Freescale Semiconductor, Inc. nor the names of its + * o Neither the name of the copyright holder nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * @@ -39,7 +39,6 @@ * @{ */ - /******************************************************************************* * Definitions ******************************************************************************/ @@ -56,13 +55,14 @@ typedef void (*i2c_master_edma_transfer_callback_t)(I2C_Type *base, /*! @brief I2C master eDMA transfer structure. */ struct _i2c_master_edma_handle { - i2c_master_transfer_t transfer; /*!< I2C master transfer struct. */ + i2c_master_transfer_t transfer; /*!< I2C master transfer structure. */ size_t transferSize; /*!< Total bytes to be transferred. */ + uint8_t nbytes; /*!< eDMA minor byte transfer count initially configured. */ uint8_t state; /*!< I2C master transfer status. */ edma_handle_t *dmaHandle; /*!< The eDMA handler used. */ i2c_master_edma_transfer_callback_t - completionCallback; /*!< Callback function called after eDMA transfer finished. */ - void *userData; /*!< Callback parameter passed to callback function. */ + completionCallback; /*!< A callback function called after the eDMA transfer is finished. */ + void *userData; /*!< A callback parameter passed to the callback function. */ }; /******************************************************************************* @@ -79,12 +79,12 @@ extern "C" { */ /*! - * @brief Init the I2C handle which is used in transcational functions. + * @brief Initializes the I2C handle which is used in transcational functions. * * @param base I2C peripheral base address. - * @param handle pointer to i2c_master_edma_handle_t structure. - * @param callback pointer to user callback function. - * @param userData user param passed to the callback function. + * @param handle A pointer to the i2c_master_edma_handle_t structure. + * @param callback A pointer to the user callback function. + * @param userData A user parameter passed to the callback function. * @param edmaHandle eDMA handle pointer. */ void I2C_MasterCreateEDMAHandle(I2C_Type *base, @@ -97,30 +97,30 @@ void I2C_MasterCreateEDMAHandle(I2C_Type *base, * @brief Performs a master eDMA non-blocking transfer on the I2C bus. * * @param base I2C peripheral base address. - * @param handle pointer to i2c_master_edma_handle_t structure. - * @param xfer pointer to transfer structure of i2c_master_transfer_t. - * @retval kStatus_Success Sucessully complete the data transmission. - * @retval kStatus_I2C_Busy Previous transmission still not finished. - * @retval kStatus_I2C_Timeout Transfer error, wait signal timeout. + * @param handle A pointer to the i2c_master_edma_handle_t structure. + * @param xfer A pointer to the transfer structure of i2c_master_transfer_t. + * @retval kStatus_Success Sucessfully completed the data transmission. + * @retval kStatus_I2C_Busy A previous transmission is still not finished. + * @retval kStatus_I2C_Timeout Transfer error, waits for a signal timeout. * @retval kStatus_I2C_ArbitrationLost Transfer error, arbitration lost. - * @retval kStataus_I2C_Nak Transfer error, receive Nak during transfer. + * @retval kStataus_I2C_Nak Transfer error, receive NAK during transfer. */ status_t I2C_MasterTransferEDMA(I2C_Type *base, i2c_master_edma_handle_t *handle, i2c_master_transfer_t *xfer); /*! - * @brief Get master transfer status during a eDMA non-blocking transfer. + * @brief Gets a master transfer status during the eDMA non-blocking transfer. * * @param base I2C peripheral base address. - * @param handle pointer to i2c_master_edma_handle_t structure. - * @param count Number of bytes transferred so far by the non-blocking transaction. + * @param handle A pointer to the i2c_master_edma_handle_t structure. + * @param count A number of bytes transferred by the non-blocking transaction. */ status_t I2C_MasterTransferGetCountEDMA(I2C_Type *base, i2c_master_edma_handle_t *handle, size_t *count); /*! - * @brief Abort a master eDMA non-blocking transfer in a early time. + * @brief Aborts a master eDMA non-blocking transfer early. * * @param base I2C peripheral base address. - * @param handle pointer to i2c_master_edma_handle_t structure. + * @param handle A pointer to the i2c_master_edma_handle_t structure. */ void I2C_MasterTransferAbortEDMA(I2C_Type *base, i2c_master_edma_handle_t *handle); |