79 lines
4.9 KiB
C
79 lines
4.9 KiB
C
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// #################################################################################################
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// # << NEORV32: neorv32_gpio.h - General Purpose Input/Output Port HW Driver (Header) >> #
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// # ********************************************************************************************* #
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// # BSD 3-Clause License #
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// # #
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// # Copyright (c) 2023, Stephan Nolting. All rights reserved. #
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// # #
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// # Redistribution and use in source and binary forms, with or without modification, are #
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// # permitted provided that the following conditions are met: #
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// # #
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// # 1. Redistributions of source code must retain the above copyright notice, this list of #
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// # conditions and the following disclaimer. #
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// # #
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// # 2. Redistributions in binary form must reproduce the above copyright notice, this list of #
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// # conditions and the following disclaimer in the documentation and/or other materials #
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// # provided with the distribution. #
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// # #
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// # 3. Neither the name of the copyright holder nor the names of its contributors may be used to #
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// # endorse or promote products derived from this software without specific prior written #
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// # permission. #
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// # #
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// # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS #
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// # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF #
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// # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE #
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// # COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, #
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// # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE #
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// # GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED #
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// # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING #
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// # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED #
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// # OF THE POSSIBILITY OF SUCH DAMAGE. #
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// # ********************************************************************************************* #
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// # The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting #
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// #################################################################################################
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/**********************************************************************//**
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* @file neorv32_gpio.h
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* @brief General purpose input/output port unit (GPIO) HW driver header file.
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*
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* @note These functions should only be used if the GPIO unit was synthesized (IO_GPIO_EN = true).
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**************************************************************************/
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#ifndef neorv32_gpio_h
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#define neorv32_gpio_h
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/**********************************************************************//**
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* @name IO Device: General Purpose Input/Output Port Unit (GPIO)
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**************************************************************************/
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/**@{*/
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/** GPIO module prototype */
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typedef volatile struct __attribute__((packed,aligned(4))) {
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const uint32_t INPUT_LO; /**< offset 0: parallel input port lower 32-bit, read-only */
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const uint32_t INPUT_HI; /**< offset 4: parallel input port upper 32-bit, read-only */
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uint32_t OUTPUT_LO; /**< offset 8: parallel output port lower 32-bit */
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uint32_t OUTPUT_HI; /**< offset 12: parallel output port upper 32-bit */
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} neorv32_gpio_t;
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/** GPIO module hardware access (#neorv32_gpio_t) */
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#define NEORV32_GPIO ((neorv32_gpio_t*) (NEORV32_GPIO_BASE))
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/**@}*/
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/**********************************************************************//**
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* @name Prototypes
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**************************************************************************/
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/**@{*/
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int neorv32_gpio_available(void);
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void neorv32_gpio_pin_set(int pin);
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void neorv32_gpio_pin_clr(int pin);
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void neorv32_gpio_pin_toggle(int pin);
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uint32_t neorv32_gpio_pin_get(int pin);
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void neorv32_gpio_port_set(uint64_t d);
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uint64_t neorv32_gpio_port_get(void);
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/**@}*/
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#endif // neorv32_gpio_h
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