151 lines
6.2 KiB
C
151 lines
6.2 KiB
C
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/**
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* Copyright (c) 2015 - 2019, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are 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
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* 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)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef NRF_GPIO_H__
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#define NRF_GPIO_H__
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#include <cstdint>
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/**
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* @brief Enumerator used for selecting the pin to be pulled down or up at the time of pin configuration.
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*/
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// lv_sim: values copied from nrf52810_bifiellds.h
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enum nrf_gpio_pin_pull_t
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{
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NRF_GPIO_PIN_NOPULL = 0, // GPIO_PIN_CNF_PULL_Disabled, ///< Pin pull-up resistor disabled.
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NRF_GPIO_PIN_PULLDOWN = 1, // GPIO_PIN_CNF_PULL_Pulldown, ///< Pin pull-down resistor enabled.
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NRF_GPIO_PIN_PULLUP = 3, // GPIO_PIN_CNF_PULL_Pullup, ///< Pin pull-up resistor enabled.
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};
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constexpr uint16_t GPIO_PIN_CNF_PULL_Pulldown = 1;
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constexpr uint16_t GPIO_PIN_CNF_PULL_Pullup = 3;
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using nrf_gpiote_polarity_t = uint32_t;
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constexpr uint16_t NRF_GPIOTE_POLARITY_HITOLO = 2;
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constexpr uint16_t NRF_GPIOTE_POLARITY_TOGGLE = 3;
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using nrfx_gpiote_pin_t = uint32_t;
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typedef void (*nrfx_gpiote_event_handler_t)(nrfx_gpiote_pin_t, nrf_gpiote_polarity_t);
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using nrf_gpio_pin_sense_t = uint32_t;
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constexpr uint16_t GPIO_PIN_CNF_SENSE_Low = 3;
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struct nrfx_gpiote_in_config_t {
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bool skip_gpio_setup = false;
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bool hi_accuracy = false;
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bool is_watcher = false;
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nrf_gpiote_polarity_t sense;
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nrf_gpio_pin_pull_t pull;
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};
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/**
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* @brief Function for resetting pin configuration to its default state.
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*
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* @param pin_number Specifies the pin number.
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*/
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void nrf_gpio_cfg_default(uint32_t pin_number);
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/**
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* @brief Function for setting a GPIO pin.
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*
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* Note that the pin must be configured as an output for this function to have any effect.
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*
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* @param pin_number Specifies the pin number to set.
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*/
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void nrf_gpio_pin_set(uint32_t pin_number);
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// read pin stub, intended to forward right mouse button as PinMap::Button
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uint32_t nrf_gpio_pin_read(uint32_t pin_number);
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/**
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* @brief Function for configuring the given GPIO pin number as output, hiding inner details.
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* This function can be used to configure a pin as simple output with gate driving GPIO_PIN_CNF_DRIVE_S0S1 (normal cases).
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*
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* @param pin_number Specifies the pin number.
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*
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* @note Sense capability on the pin is disabled and input is disconnected from the buffer as the pins are configured as output.
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*/
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void nrf_gpio_cfg_output(uint32_t pin_number);
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/**
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* @brief Function for clearing a GPIO pin.
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*
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* Note that the pin must be configured as an output for this
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* function to have any effect.
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*
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* @param pin_number Specifies the pin number to clear.
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*/
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void nrf_gpio_pin_clear(uint32_t pin_number);
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/**
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* @brief Function for configuring the GPIO pin range as input pins with given initial value set, hiding inner details.
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* This function can be used to configure pin range as simple input.
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*
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* @param pin_range_start Specifies the start number (inclusive) in the range of pin numbers to be configured (allowed values 0-30).
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*
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* @param pin_range_end Specifies the end number (inclusive) in the range of pin numbers to be configured (allowed values 0-30).
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*
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* @param pull_config State of the pin range pull resistor (no pull, pulled down, or pulled high).
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*
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* @note For configuring only one pin as input, use @ref nrf_gpio_cfg_input.
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* Sense capability on the pin is disabled and input is connected to buffer so that the GPIO->IN register is readable.
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*/
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void nrf_gpio_range_cfg_input(uint32_t pin_range_start,
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uint32_t pin_range_end,
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nrf_gpio_pin_pull_t pull_config);
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/**
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* @brief Function for configuring the given GPIO pin number as input, hiding inner details.
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* This function can be used to configure a pin as simple input.
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*
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* @param pin_number Specifies the pin number.
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* @param pull_config State of the pin range pull resistor (no pull, pulled down, or pulled high).
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*
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* @note Sense capability on the pin is disabled and input is connected to buffer so that the GPIO->IN register is readable.
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*/
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void nrf_gpio_cfg_input(uint32_t pin_number, nrf_gpio_pin_pull_t pull_config);
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void nrfx_gpiote_in_init(uint32_t pin_number, nrfx_gpiote_in_config_t *config, nrfx_gpiote_event_handler_t);
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void nrfx_gpiote_in_event_enable(uint32_t pin_number, bool enable);
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void nrf_gpio_cfg_sense_input(uint32_t pin_number, nrf_gpio_pin_pull_t pin_pull, nrf_gpio_pin_sense_t sense);
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void APP_GPIOTE_INIT(uint32_t max_users);
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#endif // NRF_GPIO_H__
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