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/**
* \file
*
* \brief I/O SPI related functionality implementation.
*
* Copyright (c) 2014-2018 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
*
*/
#include "hal_spi_m_sync.h"
#include <utils_assert.h>
#include <utils.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Driver version
*/
#define SPI_M_SYNC_DRIVER_VERSION 0x00000001u
#define SPI_DEACTIVATE_NEXT 0x8000
static int32_t _spi_m_sync_io_write(struct io_descriptor *const io, const uint8_t *const buf, const uint16_t length);
static int32_t _spi_m_sync_io_read(struct io_descriptor *const io, uint8_t *const buf, const uint16_t length);
/**
* \brief Initialize the SPI HAL instance function pointer for HPL APIs.
*/
void spi_m_sync_set_func_ptr(struct spi_m_sync_descriptor *spi, void *const func)
{
ASSERT(spi);
spi->func = (struct _spi_m_sync_hpl_interface *)func;
}
int32_t spi_m_sync_init(struct spi_m_sync_descriptor *spi, void *const hw)
{
int32_t rc = 0;
ASSERT(spi && hw);
spi->dev.prvt = (void *)hw;
rc = _spi_m_sync_init(&spi->dev, hw);
if (rc < 0) {
return rc;
}
spi->flags = SPI_DEACTIVATE_NEXT;
spi->io.read = _spi_m_sync_io_read;
spi->io.write = _spi_m_sync_io_write;
return ERR_NONE;
}
void spi_m_sync_deinit(struct spi_m_sync_descriptor *spi)
{
ASSERT(spi);
_spi_m_sync_deinit(&spi->dev);
}
void spi_m_sync_enable(struct spi_m_sync_descriptor *spi)
{
ASSERT(spi);
_spi_m_sync_enable(&spi->dev);
}
void spi_m_sync_disable(struct spi_m_sync_descriptor *spi)
{
ASSERT(spi);
_spi_m_sync_disable(&spi->dev);
}
int32_t spi_m_sync_set_baudrate(struct spi_m_sync_descriptor *spi, const uint32_t baud_val)
{
ASSERT(spi);
return _spi_m_sync_set_baudrate(&spi->dev, baud_val);
}
int32_t spi_m_sync_set_mode(struct spi_m_sync_descriptor *spi, const enum spi_transfer_mode mode)
{
ASSERT(spi);
return _spi_m_sync_set_mode(&spi->dev, mode);
}
int32_t spi_m_sync_set_char_size(struct spi_m_sync_descriptor *spi, const enum spi_char_size char_size)
{
ASSERT(spi);
return _spi_m_sync_set_char_size(&spi->dev, char_size);
}
int32_t spi_m_sync_set_data_order(struct spi_m_sync_descriptor *spi, const enum spi_data_order dord)
{
ASSERT(spi);
return _spi_m_sync_set_data_order(&spi->dev, dord);
}
/** \brief Do SPI read in polling way
* For SPI master, activate CS, do send 0xFFs and read data, deactivate CS.
*
* It blocks until all data read or error.
*
* \param[in, out] spi Pointer to the HAL SPI instance.
* \param[out] buf Pointer to the buffer to store read data.
* \param[in] size Size of the data in number of characters.
* \return Operation status.
* \retval size Success.
* \retval >=0 Time out, with number of characters read.
*/
static int32_t _spi_m_sync_io_read(struct io_descriptor *io, uint8_t *buf, const uint16_t length)
{
ASSERT(io);
struct spi_m_sync_descriptor *spi = CONTAINER_OF(io, struct spi_m_sync_descriptor, io);
struct spi_xfer xfer;
xfer.rxbuf = buf;
xfer.txbuf = 0;
xfer.size = length;
return spi_m_sync_transfer(spi, &xfer);
}
/** \brief Do SPI data write in polling way
* For SPI master, activate CS, do buffer send and deactivate CS. The data back
* is discarded.
*
* The data read back is discarded.
*
* It blocks until all data sent or error.
*
* \param[in, out] spi Pointer to the HAL SPI instance.
* \param[in] p_xfer Pointer to the transfer information (\ref spi_transfer).
* \return Operation status.
* \retval size Success.
* \retval >=0 Timeout, with number of characters transferred.
*/
static int32_t _spi_m_sync_io_write(struct io_descriptor *const io, const uint8_t *const buf, const uint16_t length)
{
ASSERT(io);
struct spi_m_sync_descriptor *spi = CONTAINER_OF(io, struct spi_m_sync_descriptor, io);
struct spi_xfer xfer;
xfer.rxbuf = 0;
xfer.txbuf = (uint8_t *)buf;
xfer.size = length;
return spi_m_sync_transfer(spi, &xfer);
}
int32_t spi_m_sync_transfer(struct spi_m_sync_descriptor *spi, const struct spi_xfer *p_xfer)
{
struct spi_msg msg;
ASSERT(spi && p_xfer);
msg.txbuf = p_xfer->txbuf;
msg.rxbuf = p_xfer->rxbuf;
msg.size = p_xfer->size;
return _spi_m_sync_trans(&spi->dev, &msg);
}
int32_t spi_m_sync_get_io_descriptor(struct spi_m_sync_descriptor *const spi, struct io_descriptor **io)
{
ASSERT(spi && io);
*io = &spi->io;
return 0;
}
uint32_t spi_m_sync_get_version(void)
{
return SPI_M_SYNC_DRIVER_VERSION;
}
#ifdef __cplusplus
}
#endif
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