76 lines
3.2 KiB
C
76 lines
3.2 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016 Scott Shawcroft
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_BUSIO_SPI_H
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#define MICROPY_INCLUDED_SHARED_BINDINGS_BUSIO_SPI_H
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#include "py/obj.h"
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#include "common-hal/microcontroller/Pin.h"
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#include "common-hal/busio/SPI.h"
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// Type object used in Python. Should be shared between ports.
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extern const mp_obj_type_t busio_spi_type;
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// Construct an underlying SPI object.
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extern void common_hal_busio_spi_construct(busio_spi_obj_t *self,
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const mcu_pin_obj_t *clock, const mcu_pin_obj_t *mosi,
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const mcu_pin_obj_t *miso, bool half_duplex);
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extern void common_hal_busio_spi_deinit(busio_spi_obj_t *self);
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extern bool common_hal_busio_spi_deinited(busio_spi_obj_t *self);
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extern bool common_hal_busio_spi_configure(busio_spi_obj_t *self, uint32_t baudrate, uint8_t polarity, uint8_t phase, uint8_t bits);
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extern bool common_hal_busio_spi_try_lock(busio_spi_obj_t *self);
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extern bool common_hal_busio_spi_has_lock(busio_spi_obj_t *self);
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extern void common_hal_busio_spi_unlock(busio_spi_obj_t *self);
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// Writes out the given data.
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extern bool common_hal_busio_spi_write(busio_spi_obj_t *self, const uint8_t *data, size_t len);
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// Reads in len bytes while outputting the byte write_value.
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extern bool common_hal_busio_spi_read(busio_spi_obj_t *self, uint8_t *data, size_t len, uint8_t write_value);
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// Reads and write len bytes simultaneously.
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extern bool common_hal_busio_spi_transfer(busio_spi_obj_t *self, const uint8_t *data_out, uint8_t *data_in, size_t len);
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// Return actual SPI bus frequency.
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uint32_t common_hal_busio_spi_get_frequency(busio_spi_obj_t *self);
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// Return SPI bus phase.
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uint8_t common_hal_busio_spi_get_phase(busio_spi_obj_t *self);
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// Return SPI bus polarity.
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uint8_t common_hal_busio_spi_get_polarity(busio_spi_obj_t *self);
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// This is used by the supervisor to claim SPI devices indefinitely.
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extern void common_hal_busio_spi_never_reset(busio_spi_obj_t *self);
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extern busio_spi_obj_t *validate_obj_is_spi_bus(mp_obj_t obj_in, qstr arg_name);
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#endif // MICROPY_INCLUDED_SHARED_BINDINGS_BUSIO_SPI_H
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