neorv32/sw/lib/include/neorv32_gpio.h

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2024-02-24 08:25:27 +00:00
// #################################################################################################
// # << NEORV32: neorv32_gpio.h - General Purpose Input/Output Port HW Driver (Header) >> #
// # ********************************************************************************************* #
// # BSD 3-Clause License #
// # #
// # Copyright (c) 2023, Stephan Nolting. All rights reserved. #
// # #
// # Redistribution and use in source and binary forms, with or without modification, are #
// # permitted provided that the following conditions are met: #
// # #
// # 1. Redistributions of source code must retain the above copyright notice, this list of #
// # conditions and the following disclaimer. #
// # #
// # 2. Redistributions in binary form must reproduce the above copyright notice, this list of #
// # conditions and the following disclaimer in the documentation and/or other materials #
// # provided with the distribution. #
// # #
// # 3. Neither the name of the copyright holder nor the names of its contributors may be used to #
// # endorse or promote products derived from this software without specific prior written #
// # permission. #
// # #
// # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS #
// # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF #
// # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE #
// # COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, #
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// # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED #
// # OF THE POSSIBILITY OF SUCH DAMAGE. #
// # ********************************************************************************************* #
// # The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting #
// #################################################################################################
/**********************************************************************//**
* @file neorv32_gpio.h
* @brief General purpose input/output port unit (GPIO) HW driver header file.
*
* @note These functions should only be used if the GPIO unit was synthesized (IO_GPIO_EN = true).
**************************************************************************/
#ifndef neorv32_gpio_h
#define neorv32_gpio_h
/**********************************************************************//**
* @name IO Device: General Purpose Input/Output Port Unit (GPIO)
**************************************************************************/
/**@{*/
/** GPIO module prototype */
typedef volatile struct __attribute__((packed,aligned(4))) {
const uint32_t INPUT_LO; /**< offset 0: parallel input port lower 32-bit, read-only */
const uint32_t INPUT_HI; /**< offset 4: parallel input port upper 32-bit, read-only */
uint32_t OUTPUT_LO; /**< offset 8: parallel output port lower 32-bit */
uint32_t OUTPUT_HI; /**< offset 12: parallel output port upper 32-bit */
} neorv32_gpio_t;
/** GPIO module hardware access (#neorv32_gpio_t) */
#define NEORV32_GPIO ((neorv32_gpio_t*) (NEORV32_GPIO_BASE))
/**@}*/
/**********************************************************************//**
* @name Prototypes
**************************************************************************/
/**@{*/
int neorv32_gpio_available(void);
void neorv32_gpio_pin_set(int pin);
void neorv32_gpio_pin_clr(int pin);
void neorv32_gpio_pin_toggle(int pin);
uint32_t neorv32_gpio_pin_get(int pin);
void neorv32_gpio_port_set(uint64_t d);
uint64_t neorv32_gpio_port_get(void);
/**@}*/
#endif // neorv32_gpio_h