| /** |
| * \file |
| * |
| * \brief SPI Master DMA related functionality declaration. |
| * |
| * Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries. |
| * |
| * \asf_license_start |
| * |
| * \page License |
| * |
| * Subject to your compliance with these terms, you may use Microchip |
| * software and any derivatives exclusively with Microchip products. |
| * It is your responsibility to comply with third party license terms applicable |
| * to your use of third party software (including open source software) that |
| * may accompany Microchip software. |
| * |
| * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, |
| * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, |
| * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, |
| * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE |
| * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL |
| * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE |
| * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE |
| * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT |
| * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY |
| * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, |
| * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. |
| * |
| * \asf_license_stop |
| * |
| */ |
| |
| #ifndef _HPL_SPI_M_DMA_H_INCLUDED |
| #define _HPL_SPI_M_DMA_H_INCLUDED |
| |
| #include <hpl_spi.h> |
| #include <hpl_spi_dma.h> |
| |
| /** |
| * \addtogroup hpl_spi HPL SPI |
| * |
| * |
| *@{ |
| */ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** Uses common SPI dma device driver. */ |
| #define _spi_m_dma_dev _spi_dma_dev |
| |
| #define _spi_m_dma_dev_cb_type _spi_dma_dev_cb_type |
| |
| /** |
| * \name HPL functions |
| */ |
| //@{ |
| /** |
| * \brief Initialize SPI for access with interrupts |
| * It will load default hardware configuration and software struct. |
| * \param[in, out] dev Pointer to the SPI device instance. |
| * \param[in] hw Pointer to the hardware base. |
| * \return Operation status. |
| * \retval ERR_INVALID_ARG Input parameter problem. |
| * \retval ERR_BUSY SPI hardware not ready (resetting). |
| * \retval ERR_DENIED SPI has been enabled. |
| * \retval 0 ERR_NONE is operation done successfully. |
| */ |
| int32_t _spi_m_dma_init(struct _spi_m_dma_dev *dev, void *const hw); |
| |
| /** |
| * \brief Initialize SPI for access with interrupts |
| * Disable, reset the hardware and the software struct. |
| * \param[in, out] dev Pointer to the SPI device instance. |
| * \return Operation status. |
| * \retval 0 ERR_NONE is operation done successfully. |
| */ |
| int32_t _spi_m_dma_deinit(struct _spi_m_dma_dev *dev); |
| |
| /** |
| * \brief Enable SPI for access with interrupts |
| * Enable the SPI and enable callback generation of receive and error |
| * interrupts. |
| * \param[in] dev Pointer to the SPI device instance. |
| * \return Operation status. |
| * \retval ERR_INVALID_ARG Input parameter problem. |
| * \retval ERR_BUSY SPI hardware not ready (resetting). |
| * \retval 0 ERR_NONE is operation done successfully. |
| */ |
| int32_t _spi_m_dma_enable(struct _spi_m_dma_dev *dev); |
| |
| /** |
| * \brief Disable SPI for access without interrupts |
| * Disable SPI and interrupts. Deactivate all CS pins if works as master. |
| * \param[in] dev Pointer to the SPI device instance. |
| * \return Operation status. |
| * \retval 0 ERR_NONE is operation done successfully. |
| */ |
| int32_t _spi_m_dma_disable(struct _spi_m_dma_dev *dev); |
| |
| /** |
| * \brief Set SPI transfer mode |
| * Set SPI transfer mode (\ref spi_transfer_mode), |
| * which controls clock polarity and clock phase. |
| * Mode 0: leading edge is rising edge, data sample on leading edge. |
| * Mode 1: leading edge is rising edge, data sample on trailing edge. |
| * Mode 2: leading edge is falling edge, data sample on leading edge. |
| * Mode 3: leading edge is falling edge, data sample on trailing edge. |
| * \param[in] dev Pointer to the SPI device instance. |
| * \param[in] mode The SPI transfer mode. |
| * \return Operation status. |
| * \retval ERR_BUSY SPI is not ready to accept new setting. |
| * \retval 0 ERR_NONE is operation done successfully. |
| */ |
| int32_t _spi_m_dma_set_mode(struct _spi_m_dma_dev *dev, const enum spi_transfer_mode mode); |
| |
| /** |
| * \brief Set SPI baudrate |
| * \param[in] dev Pointer to the SPI device instance. |
| * \param[in] baud_val The SPI baudrate value, see \ref _spi_calc_baud_val() on |
| * how it's generated. |
| * \return Operation status. |
| * \retval ERR_BUSY SPI is not ready to accept new setting. |
| * \retval 0 Operation done successfully. |
| */ |
| int32_t _spi_m_dma_set_baudrate(struct _spi_m_dma_dev *dev, const uint32_t baud_val); |
| |
| /** |
| * \brief Set SPI baudrate |
| * \param[in, out] dev Pointer to the SPI device instance. |
| * \param[in] char_size The character size, see \ref spi_char_size. |
| * \return Operation status. |
| * \retval ERR_INVALID_ARG The character size is not supported. |
| * \retval ERR_BUSY SPI is not ready to accept new setting. |
| * \retval 0 Operation done successfully. |
| */ |
| int32_t _spi_m_dma_set_char_size(struct _spi_m_dma_dev *dev, const enum spi_char_size char_size); |
| |
| /** |
| * \brief Set SPI data order |
| * \param[in] dev Pointer to the SPI device instance. |
| * \param[in] dord SPI data order (LSB/MSB first). |
| * \return Operation status. |
| * \retval ERR_INVALID_ARG The character size is not supported. |
| * \retval ERR_BUSY SPI is not ready to accept new setting. |
| * \retval 0 Operation done successfully. |
| */ |
| int32_t _spi_m_dma_set_data_order(struct _spi_m_dma_dev *dev, const enum spi_data_order dord); |
| |
| /** |
| * \brief Register the SPI device callback |
| * \param[in] dev Pointer to the SPI device instance. |
| * \param[in] cb_type The callback type. |
| * \param[in] func The callback function to register. NULL to disable callback. |
| * \return Always 0. |
| */ |
| void _spi_m_dma_register_callback(struct _spi_m_dma_dev *dev, enum _spi_dma_dev_cb_type, _spi_dma_cb_t func); |
| |
| /** \brief Do SPI data transfer (TX & RX) with DMA |
| * Log the TX & RX buffers and transfer them in background. It never blocks. |
| * |
| * \param[in] dev Pointer to the SPI device instance. |
| * \param[in] txbuf Pointer to the transfer information (\ref spi_transfer). |
| * \param[out] rxbuf Pointer to the receiver information (\ref spi_receive). |
| * \param[in] length spi transfer data length. |
| * |
| * \return Operation status. |
| * \retval ERR_NONE Success. |
| * \retval ERR_BUSY Busy. |
| */ |
| int32_t _spi_m_dma_transfer(struct _spi_m_dma_dev *dev, uint8_t const *txbuf, uint8_t *const rxbuf, |
| const uint16_t length); |
| //@} |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| /**@}*/ |
| #endif /* ifndef _HPL_SPI_M_DMA_H_INCLUDED */ |