ESP-IDF
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Outline
#include <stdint.h>
#include <stdbool.h>
#include "soc/gpio_pins.h"
esp_rom_gpio_pad_select_gpio(uint32_t);
esp_rom_gpio_pad_pullup_only(uint32_t);
esp_rom_gpio_pad_unhold(uint32_t);
esp_rom_gpio_pad_set_drv(uint32_t, uint32_t);
esp_rom_gpio_connect_in_signal(uint32_t, uint32_t, bool);
esp_rom_gpio_connect_out_signal(uint32_t, uint32_t, bool, bool);
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_rom/include/esp_rom_gpio.h
 
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/* * SPDX-FileCopyrightText: 2010-2023 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #pragma once #ifdef __cplusplus extern "C" { #endif #include <stdint.h> #include <stdbool.h> #include "soc/gpio_pins.h" //for GPIO_MATRIX_CONST_ONE_INPUT, GPIO_MATRIX_CONST_ZERO_INPUT /** * @brief Configure IO Pad as General Purpose IO, * so that it can be connected to internal Matrix, * then combined with one or more peripheral signals. * * @param iopad_num IO Pad number *//* ... */ void esp_rom_gpio_pad_select_gpio(uint32_t iopad_num); /** * @brief Enable internal pull up, and disable internal pull down. * * @param iopad_num IO Pad number *//* ... */ void esp_rom_gpio_pad_pullup_only(uint32_t iopad_num); /** * @brief Unhold the IO Pad. * @note When the Pad is set to hold, the state is latched at that moment and won't get changed. * * @param iopad_num IP Pad number *//* ... */ void esp_rom_gpio_pad_unhold(uint32_t gpio_num); /** * @brief Set IO Pad current drive capability. * * @param iopad_num IO Pad number * @param drv Numeric to indicate the capability of current drive * - 0: 5mA * - 1: 10mA * - 2: 20mA * - 3: 40mA *//* ... */ void esp_rom_gpio_pad_set_drv(uint32_t iopad_num, uint32_t drv); /** * @brief Combine a GPIO input with a peripheral signal, which tagged as input attribute. * * @note There's no limitation on the number of signals that a GPIO can combine with. * * @param gpio_num GPIO number, especially, `GPIO_MATRIX_CONST_ZERO_INPUT` means connect logic 0 to signal * `GPIO_MATRIX_CONST_ONE_INPUT` means connect logic 1 to signal * @param signal_idx Peripheral signal index (tagged as input attribute) * @param inv Whether the GPIO input to be inverted or not *//* ... */ void esp_rom_gpio_connect_in_signal(uint32_t gpio_num, uint32_t signal_idx, bool inv); /** * @brief Combine a peripheral signal which tagged as output attribute with a GPIO. * * @note There's no limitation on the number of signals that a GPIO can combine with. * @note Internally, the signal will be connected first, then output will be enabled on the pad. * * @param gpio_num GPIO number * @param signal_idx Peripheral signal index (tagged as output attribute). Particularly, `SIG_GPIO_OUT_IDX` means disconnect GPIO and other peripherals. Only the GPIO driver can control the output level. * @param out_inv Whether to signal to be inverted or not * @param oen_inv Whether the output enable control is inverted or not *//* ... */ void esp_rom_gpio_connect_out_signal(uint32_t gpio_num, uint32_t signal_idx, bool out_inv, bool oen_inv); #ifdef __cplusplus }{...} #endif
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