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571 lines
20 KiB
C
571 lines
20 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <stdio.h>
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#include <stdbool.h>
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#include "sdkconfig.h"
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#include "esp_err.h"
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#include "esp_intr_alloc.h"
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#include "soc/soc_caps.h"
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#include "hal/gpio_types.h"
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#include "esp_rom_gpio.h"
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#include "driver/gpio_etm.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define GPIO_PIN_COUNT (SOC_GPIO_PIN_COUNT)
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/// Check whether it is a valid GPIO number
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#define GPIO_IS_VALID_GPIO(gpio_num) ((gpio_num >= 0) && \
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(((1ULL << (gpio_num)) & SOC_GPIO_VALID_GPIO_MASK) != 0))
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/// Check whether it can be a valid GPIO number of output mode
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#define GPIO_IS_VALID_OUTPUT_GPIO(gpio_num) ((gpio_num >= 0) && \
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(((1ULL << (gpio_num)) & SOC_GPIO_VALID_OUTPUT_GPIO_MASK) != 0))
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/// Check whether it can be a valid digital I/O pad
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#define GPIO_IS_VALID_DIGITAL_IO_PAD(gpio_num) ((gpio_num >= 0) && \
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(((1ULL << (gpio_num)) & SOC_GPIO_VALID_DIGITAL_IO_PAD_MASK) != 0))
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typedef intr_handle_t gpio_isr_handle_t;
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/**
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* @brief GPIO interrupt handler
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*
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* @param arg User registered data
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*/
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typedef void (*gpio_isr_t)(void *arg);
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/**
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* @brief Configuration parameters of GPIO pad for gpio_config function
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*/
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typedef struct {
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uint64_t pin_bit_mask; /*!< GPIO pin: set with bit mask, each bit maps to a GPIO */
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gpio_mode_t mode; /*!< GPIO mode: set input/output mode */
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gpio_pullup_t pull_up_en; /*!< GPIO pull-up */
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gpio_pulldown_t pull_down_en; /*!< GPIO pull-down */
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gpio_int_type_t intr_type; /*!< GPIO interrupt type */
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#if SOC_GPIO_SUPPORT_PIN_HYS_FILTER
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gpio_hys_ctrl_mode_t hys_ctrl_mode; /*!< GPIO hysteresis: hysteresis filter on slope input */
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#endif
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} gpio_config_t;
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/**
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* @brief GPIO common configuration
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*
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* Configure GPIO's Mode,pull-up,PullDown,IntrType
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*
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* @param pGPIOConfig Pointer to GPIO configure struct
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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*
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*/
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esp_err_t gpio_config(const gpio_config_t *pGPIOConfig);
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/**
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* @brief Reset an gpio to default state (select gpio function, enable pullup and disable input and output).
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*
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* @param gpio_num GPIO number.
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*
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* @note This function also configures the IOMUX for this pin to the GPIO
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* function, and disconnects any other peripheral output configured via GPIO
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* Matrix.
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*
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* @return Always return ESP_OK.
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*/
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esp_err_t gpio_reset_pin(gpio_num_t gpio_num);
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/**
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* @brief GPIO set interrupt trigger type
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*
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* @param gpio_num GPIO number. If you want to set the trigger type of e.g. of GPIO16, gpio_num should be GPIO_NUM_16 (16);
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* @param intr_type Interrupt type, select from gpio_int_type_t
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*
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*/
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esp_err_t gpio_set_intr_type(gpio_num_t gpio_num, gpio_int_type_t intr_type);
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/**
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* @brief Enable GPIO module interrupt signal
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*
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* @note ESP32: Please do not use the interrupt of GPIO36 and GPIO39 when using ADC or Wi-Fi and Bluetooth with sleep mode enabled.
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* Please refer to the comments of `adc1_get_raw`.
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* Please refer to Section 3.11 of <a href="https://espressif.com/sites/default/files/documentation/eco_and_workarounds_for_bugs_in_esp32_en.pdf">ESP32 ECO and Workarounds for Bugs</a> for the description of this issue.
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*
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* @param gpio_num GPIO number. If you want to enable an interrupt on e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*
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*/
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esp_err_t gpio_intr_enable(gpio_num_t gpio_num);
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/**
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* @brief Disable GPIO module interrupt signal
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*
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* @note This function is allowed to be executed when Cache is disabled within ISR context, by enabling `CONFIG_GPIO_CTRL_FUNC_IN_IRAM`
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*
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* @param gpio_num GPIO number. If you want to disable the interrupt of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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*
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*/
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esp_err_t gpio_intr_disable(gpio_num_t gpio_num);
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/**
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* @brief GPIO set output level
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*
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* @note This function is allowed to be executed when Cache is disabled within ISR context, by enabling `CONFIG_GPIO_CTRL_FUNC_IN_IRAM`
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*
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* @param gpio_num GPIO number. If you want to set the output level of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
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* @param level Output level. 0: low ; 1: high
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG GPIO number error
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*
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*/
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esp_err_t gpio_set_level(gpio_num_t gpio_num, uint32_t level);
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/**
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* @brief GPIO get input level
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*
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* @warning If the pad is not configured for input (or input and output) the returned value is always 0.
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*
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* @param gpio_num GPIO number. If you want to get the logic level of e.g. pin GPIO16, gpio_num should be GPIO_NUM_16 (16);
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*
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* @return
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* - 0 the GPIO input level is 0
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* - 1 the GPIO input level is 1
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*
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*/
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int gpio_get_level(gpio_num_t gpio_num);
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/**
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* @brief GPIO set direction
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*
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* Configure GPIO direction,such as output_only,input_only,output_and_input
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*
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* @param gpio_num Configure GPIO pins number, it should be GPIO number. If you want to set direction of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
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* @param mode GPIO direction
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG GPIO error
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*
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*/
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esp_err_t gpio_set_direction(gpio_num_t gpio_num, gpio_mode_t mode);
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/**
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* @brief Configure GPIO pull-up/pull-down resistors
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*
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* @note ESP32: Only pins that support both input & output have integrated pull-up and pull-down resistors. Input-only GPIOs 34-39 do not.
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*
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* @param gpio_num GPIO number. If you want to set pull up or down mode for e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
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* @param pull GPIO pull up/down mode.
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG : Parameter error
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*
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*/
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esp_err_t gpio_set_pull_mode(gpio_num_t gpio_num, gpio_pull_mode_t pull);
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/**
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* @brief Enable GPIO wake-up function.
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*
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* @param gpio_num GPIO number.
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*
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* @param intr_type GPIO wake-up type. Only GPIO_INTR_LOW_LEVEL or GPIO_INTR_HIGH_LEVEL can be used.
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_wakeup_enable(gpio_num_t gpio_num, gpio_int_type_t intr_type);
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/**
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* @brief Disable GPIO wake-up function.
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*
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* @param gpio_num GPIO number
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_wakeup_disable(gpio_num_t gpio_num);
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/**
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* @brief Register GPIO interrupt handler, the handler is an ISR.
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* The handler will be attached to the same CPU core that this function is running on.
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*
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* This ISR function is called whenever any GPIO interrupt occurs. See
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* the alternative gpio_install_isr_service() and
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* gpio_isr_handler_add() API in order to have the driver support
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* per-GPIO ISRs.
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*
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* @param fn Interrupt handler function.
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* @param arg Parameter for handler function
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* @param intr_alloc_flags Flags used to allocate the interrupt. One or multiple (ORred)
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* ESP_INTR_FLAG_* values. See esp_intr_alloc.h for more info.
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* @param handle Pointer to return handle. If non-NULL, a handle for the interrupt will be returned here.
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*
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* \verbatim embed:rst:leading-asterisk
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* To disable or remove the ISR, pass the returned handle to the :doc:`interrupt allocation functions </api-reference/system/intr_alloc>`.
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* \endverbatim
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*
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* @return
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* - ESP_OK Success ;
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* - ESP_ERR_INVALID_ARG GPIO error
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* - ESP_ERR_NOT_FOUND No free interrupt found with the specified flags
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*/
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esp_err_t gpio_isr_register(void (*fn)(void *), void *arg, int intr_alloc_flags, gpio_isr_handle_t *handle);
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/**
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* @brief Enable pull-up on GPIO.
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*
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* @param gpio_num GPIO number
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_pullup_en(gpio_num_t gpio_num);
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/**
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* @brief Disable pull-up on GPIO.
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*
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* @param gpio_num GPIO number
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_pullup_dis(gpio_num_t gpio_num);
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/**
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* @brief Enable pull-down on GPIO.
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*
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* @param gpio_num GPIO number
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_pulldown_en(gpio_num_t gpio_num);
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/**
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* @brief Disable pull-down on GPIO.
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*
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* @param gpio_num GPIO number
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_pulldown_dis(gpio_num_t gpio_num);
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/**
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* @brief Install the GPIO driver's ETS_GPIO_INTR_SOURCE ISR handler service, which allows per-pin GPIO interrupt handlers.
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*
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* This function is incompatible with gpio_isr_register() - if that function is used, a single global ISR is registered for all GPIO interrupts. If this function is used, the ISR service provides a global GPIO ISR and individual pin handlers are registered via the gpio_isr_handler_add() function.
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*
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* @param intr_alloc_flags Flags used to allocate the interrupt. One or multiple (ORred)
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* ESP_INTR_FLAG_* values. See esp_intr_alloc.h for more info.
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_NO_MEM No memory to install this service
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* - ESP_ERR_INVALID_STATE ISR service already installed.
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* - ESP_ERR_NOT_FOUND No free interrupt found with the specified flags
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* - ESP_ERR_INVALID_ARG GPIO error
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*/
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esp_err_t gpio_install_isr_service(int intr_alloc_flags);
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/**
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* @brief Uninstall the driver's GPIO ISR service, freeing related resources.
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*/
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void gpio_uninstall_isr_service(void);
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/**
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* @brief Add ISR handler for the corresponding GPIO pin.
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*
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* Call this function after using gpio_install_isr_service() to
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* install the driver's GPIO ISR handler service.
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*
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* The pin ISR handlers no longer need to be declared with IRAM_ATTR,
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* unless you pass the ESP_INTR_FLAG_IRAM flag when allocating the
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* ISR in gpio_install_isr_service().
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*
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* This ISR handler will be called from an ISR. So there is a stack
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* size limit (configurable as "ISR stack size" in menuconfig). This
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* limit is smaller compared to a global GPIO interrupt handler due
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* to the additional level of indirection.
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*
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* @param gpio_num GPIO number
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* @param isr_handler ISR handler function for the corresponding GPIO number.
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* @param args parameter for ISR handler.
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Wrong state, the ISR service has not been initialized.
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_isr_handler_add(gpio_num_t gpio_num, gpio_isr_t isr_handler, void *args);
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/**
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* @brief Remove ISR handler for the corresponding GPIO pin.
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*
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* @param gpio_num GPIO number
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Wrong state, the ISR service has not been initialized.
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_isr_handler_remove(gpio_num_t gpio_num);
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/**
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* @brief Set GPIO pad drive capability
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*
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* @param gpio_num GPIO number, only support output GPIOs
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* @param strength Drive capability of the pad
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_set_drive_capability(gpio_num_t gpio_num, gpio_drive_cap_t strength);
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/**
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* @brief Get GPIO pad drive capability
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*
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* @param gpio_num GPIO number, only support output GPIOs
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* @param strength Pointer to accept drive capability of the pad
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t gpio_get_drive_capability(gpio_num_t gpio_num, gpio_drive_cap_t *strength);
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/**
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* @brief Enable gpio pad hold function.
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*
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* When a GPIO is set to hold, its state is latched at that moment and will not change when the internal
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* signal or the IO MUX/GPIO configuration is modified (including input enable, output enable, output value,
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* function, and drive strength values). This function can be used to retain the state of GPIOs when the power
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* domain of where GPIO/IOMUX belongs to becomes off. For example, chip or system is reset (e.g. watchdog
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* time-out, deep-sleep events are triggered), or peripheral power-down in light-sleep.
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*
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* This function works in both input and output modes, and only applicable to output-capable GPIOs.
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* If this function is enabled:
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* in output mode: the output level of the GPIO will be locked and can not be changed.
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* in input mode: the input read value can still reflect the changes of the input signal.
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*
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* However, on ESP32/S2/C3/S3/C2, this function cannot be used to hold the state of a digital GPIO during Deep-sleep.
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* Even if this function is enabled, the digital GPIO will be reset to its default state when the chip wakes up from
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* Deep-sleep. If you want to hold the state of a digital GPIO during Deep-sleep, please call `gpio_deep_sleep_hold_en`.
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*
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* Power down or call `gpio_hold_dis` will disable this function.
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*
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* @param gpio_num GPIO number, only support output-capable GPIOs
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_NOT_SUPPORTED Not support pad hold function
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*/
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esp_err_t gpio_hold_en(gpio_num_t gpio_num);
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/**
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* @brief Disable gpio pad hold function.
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*
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* When the chip is woken up from peripheral power-down sleep, the gpio will be set to the default mode,
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* so, the gpio will output the default level if this function is called. If you don't want the level changes, the
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* gpio should be configured to a known state before this function is called.
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* e.g.
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* If you hold gpio18 high during Deep-sleep, after the chip is woken up and `gpio_hold_dis` is called,
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* gpio18 will output low level(because gpio18 is input mode by default). If you don't want this behavior,
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* you should configure gpio18 as output mode and set it to high level before calling `gpio_hold_dis`.
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*
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* @param gpio_num GPIO number, only support output-capable GPIOs
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_NOT_SUPPORTED Not support pad hold function
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*/
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esp_err_t gpio_hold_dis(gpio_num_t gpio_num);
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#if !SOC_GPIO_SUPPORT_HOLD_SINGLE_IO_IN_DSLP
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/**
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* @brief Enable all digital gpio pads hold function during Deep-sleep.
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*
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* Enabling this feature makes all digital gpio pads be at the holding state during Deep-sleep. The state of each pad
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* holds is its active configuration (not pad's sleep configuration!).
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*
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* Note that this pad hold feature only works when the chip is in Deep-sleep mode. When the chip is in active mode,
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* the digital gpio state can be changed freely even you have called this function.
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*
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* After this API is being called, the digital gpio Deep-sleep hold feature will work during every sleep process. You
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* should call `gpio_deep_sleep_hold_dis` to disable this feature.
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*/
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void gpio_deep_sleep_hold_en(void);
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/**
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* @brief Disable all digital gpio pads hold function during Deep-sleep.
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*/
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void gpio_deep_sleep_hold_dis(void);
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#endif //!SOC_GPIO_SUPPORT_HOLD_SINGLE_IO_IN_DSLP
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/**
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* @brief Set pad input to a peripheral signal through the IOMUX.
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* @param gpio_num GPIO number of the pad.
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* @param signal_idx Peripheral signal id to input. One of the ``*_IN_IDX`` signals in ``soc/gpio_sig_map.h``.
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*/
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void gpio_iomux_in(uint32_t gpio_num, uint32_t signal_idx);
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/**
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* @brief Set peripheral output to an GPIO pad through the IOMUX.
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* @param gpio_num gpio_num GPIO number of the pad.
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* @param func The function number of the peripheral pin to output pin.
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* One of the ``FUNC_X_*`` of specified pin (X) in ``soc/io_mux_reg.h``.
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* @param out_en_inv True if the output enable needs to be inverted, otherwise False.
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*/
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void gpio_iomux_out(uint8_t gpio_num, int func, bool out_en_inv);
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#if SOC_GPIO_SUPPORT_FORCE_HOLD
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/**
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* @brief Force hold all digital and rtc gpio pads.
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*
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* GPIO force hold, no matter the chip in active mode or sleep modes.
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*
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* This function will immediately cause all pads to latch the current values of input enable, output enable,
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* output value, function, and drive strength values.
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*
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* @warning
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* 1. This function will hold flash and UART pins as well. Therefore, this function, and all code run afterwards
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* (till calling `gpio_force_unhold_all` to disable this feature), MUST be placed in internal RAM as holding the flash
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|
* pins will halt SPI flash operation, and holding the UART pins will halt any UART logging.
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|
* 2. The hold state of all pads will be cancelled during ROM boot, so it is not recommended to use this API to hold
|
|
* the pads state during deepsleep and reset.
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|
* */
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|
esp_err_t gpio_force_hold_all(void);
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|
|
|
/**
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|
* @brief Unhold all digital and rtc gpio pads.
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|
*
|
|
* @note The global hold signal and the hold signal of each IO act on the PAD through 'or' logic, so if a pad has already
|
|
* been configured to hold by `gpio_hold_en`, this API can't release its hold state.
|
|
* */
|
|
esp_err_t gpio_force_unhold_all(void);
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|
#endif
|
|
|
|
/**
|
|
* @brief Enable SLP_SEL to change GPIO status automantically in lightsleep.
|
|
* @param gpio_num GPIO number of the pad.
|
|
*
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|
* @return
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|
* - ESP_OK Success
|
|
*
|
|
*/
|
|
esp_err_t gpio_sleep_sel_en(gpio_num_t gpio_num);
|
|
|
|
/**
|
|
* @brief Disable SLP_SEL to change GPIO status automantically in lightsleep.
|
|
* @param gpio_num GPIO number of the pad.
|
|
*
|
|
* @return
|
|
* - ESP_OK Success
|
|
*/
|
|
esp_err_t gpio_sleep_sel_dis(gpio_num_t gpio_num);
|
|
|
|
/**
|
|
* @brief GPIO set direction at sleep
|
|
*
|
|
* Configure GPIO direction,such as output_only,input_only,output_and_input
|
|
*
|
|
* @param gpio_num Configure GPIO pins number, it should be GPIO number. If you want to set direction of e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
|
|
* @param mode GPIO direction
|
|
*
|
|
* @return
|
|
* - ESP_OK Success
|
|
* - ESP_ERR_INVALID_ARG GPIO error
|
|
*/
|
|
esp_err_t gpio_sleep_set_direction(gpio_num_t gpio_num, gpio_mode_t mode);
|
|
|
|
/**
|
|
* @brief Configure GPIO pull-up/pull-down resistors at sleep
|
|
*
|
|
* @note ESP32: Only pins that support both input & output have integrated pull-up and pull-down resistors. Input-only GPIOs 34-39 do not.
|
|
*
|
|
* @param gpio_num GPIO number. If you want to set pull up or down mode for e.g. GPIO16, gpio_num should be GPIO_NUM_16 (16);
|
|
* @param pull GPIO pull up/down mode.
|
|
*
|
|
* @return
|
|
* - ESP_OK Success
|
|
* - ESP_ERR_INVALID_ARG : Parameter error
|
|
*/
|
|
esp_err_t gpio_sleep_set_pull_mode(gpio_num_t gpio_num, gpio_pull_mode_t pull);
|
|
|
|
#if SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP
|
|
|
|
#define GPIO_IS_DEEP_SLEEP_WAKEUP_VALID_GPIO(gpio_num) ((gpio_num >= 0) && \
|
|
(((1ULL << (gpio_num)) & SOC_GPIO_DEEP_SLEEP_WAKE_VALID_GPIO_MASK) != 0))
|
|
|
|
/**
|
|
* @brief Enable GPIO deep-sleep wake-up function.
|
|
*
|
|
* @param gpio_num GPIO number.
|
|
*
|
|
* @param intr_type GPIO wake-up type. Only GPIO_INTR_LOW_LEVEL or GPIO_INTR_HIGH_LEVEL can be used.
|
|
*
|
|
* @note Called by the SDK. User shouldn't call this directly in the APP.
|
|
*
|
|
* @return
|
|
* - ESP_OK Success
|
|
* - ESP_ERR_INVALID_ARG Parameter error
|
|
*/
|
|
esp_err_t gpio_deep_sleep_wakeup_enable(gpio_num_t gpio_num, gpio_int_type_t intr_type);
|
|
|
|
/**
|
|
* @brief Disable GPIO deep-sleep wake-up function.
|
|
*
|
|
* @param gpio_num GPIO number
|
|
*
|
|
* @return
|
|
* - ESP_OK Success
|
|
* - ESP_ERR_INVALID_ARG Parameter error
|
|
*/
|
|
esp_err_t gpio_deep_sleep_wakeup_disable(gpio_num_t gpio_num);
|
|
|
|
#endif //SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP
|
|
|
|
/**
|
|
* @brief Dump IO configuration information to console
|
|
*
|
|
* @param out_stream IO stream (e.g. stdout)
|
|
* @param io_bit_mask IO pin bit mask, each bit maps to an IO
|
|
*
|
|
* @return
|
|
* - ESP_OK Success
|
|
* - ESP_ERR_INVALID_ARG Parameter error
|
|
*/
|
|
esp_err_t gpio_dump_io_configuration(FILE *out_stream, uint64_t io_bit_mask);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|