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Diffstat (limited to 'watch-library/hardware/hal/include/hpl_spi_async.h')
| -rw-r--r-- | watch-library/hardware/hal/include/hpl_spi_async.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/watch-library/hardware/hal/include/hpl_spi_async.h b/watch-library/hardware/hal/include/hpl_spi_async.h new file mode 100644 index 00000000..8e5a8485 --- /dev/null +++ b/watch-library/hardware/hal/include/hpl_spi_async.h @@ -0,0 +1,131 @@ +/** + * \file + * + * \brief Common SPI 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_ASYNC_H_INCLUDED +#define _HPL_SPI_ASYNC_H_INCLUDED + +#include <hpl_spi.h> +#include <hpl_irq.h> + +/** + * \addtogroup hpl_spi HPL SPI + * + *@{ + */ + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \brief Callbacks the SPI driver must offer in async mode + */ +//@{ +/** The callback types */ +enum _spi_async_dev_cb_type { + /** Callback type for transmit, see \ref _spi_async_dev_cb_xfer_t. */ + SPI_DEV_CB_TX, + /** Callback type for receive, see \ref _spi_async_dev_cb_xfer_t. */ + SPI_DEV_CB_RX, + /** Callback type for \ref _spi_async_dev_cb_complete_t. */ + SPI_DEV_CB_COMPLETE, + /** Callback type for error */ + SPI_DEV_CB_ERROR, + /** Number of callbacks. */ + SPI_DEV_CB_N +}; + +struct _spi_async_dev; + +/** \brief The prototype for callback on SPI transfer error. + * If status code is zero, it indicates the normal completion, that is, + * SS deactivation. + * If status code belows zero, it indicates complete. + */ +typedef void (*_spi_async_dev_cb_error_t)(struct _spi_async_dev *dev, int32_t status); + +/** \brief The prototype for callback on SPI transmit/receive event + * For TX, the callback is invoked when transmit is done or ready to start + * transmit. + * For RX, the callback is invoked when receive is done or ready to read data, + * see \ref _spi_async_dev_read_one_t on data reading. + * Without DMA enabled, the callback is invoked on each character event. + * With DMA enabled, the callback is invoked on DMA buffer done. + */ +typedef void (*_spi_async_dev_cb_xfer_t)(struct _spi_async_dev *dev); + +/** + * \brief The callbacks offered by SPI driver + */ +struct _spi_async_dev_callbacks { + /** TX callback, see \ref _spi_async_dev_cb_xfer_t. */ + _spi_async_dev_cb_xfer_t tx; + /** RX callback, see \ref _spi_async_dev_cb_xfer_t. */ + _spi_async_dev_cb_xfer_t rx; + /** Complete or complete callback, see \ref _spi_async_dev_cb_complete_t. */ + _spi_async_dev_cb_xfer_t complete; + /** Error callback, see \ref */ + _spi_async_dev_cb_error_t err; +}; +//@} + +/** + * \brief SPI async driver + */ +//@{ + +/** SPI driver to support async HAL */ +struct _spi_async_dev { + /** Pointer to the hardware base or private data for special device. */ + void *prvt; + /** Data size, number of bytes for each character */ + uint8_t char_size; + /** Dummy byte used in master mode when reading the slave */ + uint16_t dummy_byte; + + /** \brief Pointer to callback functions, ignored for polling mode + * Pointer to the callback functions so that initialize the driver to + * handle interrupts. + */ + struct _spi_async_dev_callbacks callbacks; + /** IRQ instance for SPI device. */ + struct _irq_descriptor irq; +}; +//@} + +#ifdef __cplusplus +} +#endif + +/**@}*/ +#endif /* ifndef _HPL_SPI_ASYNC_H_INCLUDED */ |