forked from Imagelibrary/rtems
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/*
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* Copyright (c) 2016 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <info@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifndef LIBBSP_ARM_ATSAM_SC16IS752_H
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#define LIBBSP_ARM_ATSAM_SC16IS752_H
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#include <rtems/irq-extension.h>
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#include <libchip/chip.h>
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#include <dev/serial/sc16is752.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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typedef struct {
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sc16is752_spi_context base;
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Pin irq_pin;
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rtems_interrupt_server_entry irqs_entry; /* Internal. Don't touch. */
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rtems_interrupt_server_action irqs_action; /* Internal. Don't touch. */
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} atsam_sc16is752_spi_context;
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/**
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* @brief Creates an SPI connected SC16IS752 device.
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*
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* This devices uses the interrupt server, see
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* rtems_interrupt_server_initialize().
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*
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* The device claims the interrupt of the PIO block.
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*
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* @param[in] ctx The device context. May have an arbitrary content.
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* @param[in] device_path The device file path for the new device.
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* @param[in] mode The SC16IS752 mode.
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* @param[in] input_frequency The input frequency in Hertz of the SC16IS752
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* chip. See XTAL1 and XTAL2 pins.
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* @param[in] spi_path The SPI bus device path.
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* @param[in] spi_chip_select The SPI chip select (starts with 0, the SPI
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* driver uses SPI_ChipSelect(1 << spi_chip_select)).
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* @param[in] spi_speed_hz The SPI bus speed in Hertz.
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* @param[in] irq_pin The interrupt pin, e.g. { PIO_PD28, PIOD, ID_PIOD,
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* PIO_INPUT, PIO_IT_LOW_LEVEL }.
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*
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* @return See sc16is752_spi_create().
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*/
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int atsam_sc16is752_spi_create(
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atsam_sc16is752_spi_context *ctx,
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const char *device_path,
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sc16is752_mode mode,
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uint32_t input_frequency,
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const char *spi_path,
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uint8_t spi_chip_select,
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uint32_t spi_speed_hz,
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const Pin *irq_pin
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);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* LIBBSP_ARM_ATSAM_SC16IS752_H */
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