/** * \file * * \brief SPI Slave Async related functionality declaration. * * Copyright (c) 2015-2018 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_S_ASYNC_H_INCLUDED #define _HPL_SPI_S_ASYNC_H_INCLUDED #include /** * \addtogroup hpl_spi HPL SPI * * *@{ */ #ifdef __cplusplus extern "C" { #endif /** Uses common SPI async device driver. */ #define _spi_s_async_dev _spi_async_dev #define _spi_s_async_dev_cb_type _spi_async_dev_cb_type /** Uses common SPI async device driver complete callback type. */ #define _spi_m_async_dev_cb_error_t _spi_async_dev_cb_error_t /** Uses common SPI async device driver transfer callback type. */ #define _spi_s_async_dev_cb_xfer_t _spi_async_dev_cb_xfer_t /** * \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 Operation done successfully. */ int32_t _spi_s_async_init(struct _spi_s_async_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 Operation done successfully. */ int32_t _spi_s_async_deinit(struct _spi_s_async_dev *dev); /** * \brief Enable SPI for access with interrupts * Enable the SPI and enable callback generation of receive and error * interrupts. * \param[in, out] 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 Operation done successfully. */ int32_t _spi_s_async_enable(struct _spi_s_async_dev *dev); /** * \brief Disable SPI for access without interrupts * Disable SPI and interrupts. Deactivate all CS pins if works as master. * \param[in, out] dev Pointer to the SPI device instance. * \return Operation status. * \retval 0 Operation done successfully. */ int32_t _spi_s_async_disable(struct _spi_s_async_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, out] 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 Operation done successfully. */ int32_t _spi_s_async_set_mode(struct _spi_s_async_dev *dev, const enum spi_transfer_mode mode); /** * \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_s_async_set_char_size(struct _spi_s_async_dev *dev, const enum spi_char_size char_size); /** * \brief Set SPI data order * \param[in, out] 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_s_async_set_data_order(struct _spi_s_async_dev *dev, const enum spi_data_order dord); /** * \brief Enable interrupt on character output * * Enable interrupt when a new character can be written * to the SPI device. * * \param[in] dev Pointer to the SPI device instance * \param[in] state true = enable output interrupt * false = disable output interrupt * * \return Status code * \retval 0 Ok status */ int32_t _spi_s_async_enable_tx(struct _spi_s_async_dev *dev, bool state); /** * \brief Enable interrupt on character input * * Enable interrupt when a new character is ready to be * read from the SPI device. * * \param[in] dev Pointer to the SPI device instance * \param[in] state true = enable input interrupts * false = disable input interrupt * * \return Status code * \retvat 0 OK Status */ int32_t _spi_s_async_enable_rx(struct _spi_s_async_dev *dev, bool state); /** * \brief Enable interrupt on Slave Select (SS) rising * * \param[in] dev Pointer to the SPI device instance * \param[in] state true = enable input interrupts * false = disable input interrupt * * \return Status code * \retvat 0 OK Status */ int32_t _spi_s_async_enable_ss_detect(struct _spi_s_async_dev *dev, bool state); /** * \brief Read one character to SPI device instance * \param[in, out] dev Pointer to the SPI device instance. * * \return Character read from SPI module */ uint16_t _spi_s_async_read_one(struct _spi_s_async_dev *dev); /** * \brief Write one character to assigned buffer * \param[in, out] dev Pointer to the SPI device instance. * \param[in] data * * \return Status code of write operation * \retval 0 Write operation OK */ int32_t _spi_s_async_write_one(struct _spi_s_async_dev *dev, uint16_t data); /** * \brief Register the SPI device callback * \param[in, out] 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. */ int32_t _spi_s_async_register_callback(struct _spi_s_async_dev *dev, const enum _spi_s_async_dev_cb_type cb_type, const FUNC_PTR func); /** * \brief Enable/disable SPI slave interrupt * * param[in] device The pointer to SPI slave device instance * param[in] type The type of interrupt to disable/enable if applicable * param[in] state Enable or disable */ void _spi_s_async_set_irq_state(struct _spi_s_async_dev *const device, const enum _spi_async_dev_cb_type type, const bool state); //@} #ifdef __cplusplus } #endif /**@}*/ #endif /* ifndef _HPL_SPI_S_ASYNC_H_INCLUDED */