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/*
* SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
#include "esp_err.h"
#include "esp_attr.h"
#include "soc/soc_caps.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Type of Dedicated GPIO bundle
*/
typedef struct dedic_gpio_bundle_t *dedic_gpio_bundle_handle_t;
/**
* @brief Type of Dedicated GPIO bundle configuration
*/
typedef struct {
const int *gpio_array; /*!< Array of GPIO numbers, gpio_array[0] ~ gpio_array[size-1] <=> low_dedic_channel_num ~ high_dedic_channel_num */
size_t array_size; /*!< Number of GPIOs in gpio_array */
struct {
unsigned int in_en: 1; /*!< Enable input */
unsigned int in_invert: 1; /*!< Invert input signal */
unsigned int out_en: 1; /*!< Enable output */
unsigned int out_invert: 1; /*!< Invert output signal */
} flags; /*!< Flags to control specific behaviour of GPIO bundle */
} dedic_gpio_bundle_config_t;
/**
* @brief Create GPIO bundle and return the handle
*
* @param[in] config Configuration of GPIO bundle
* @param[out] ret_bundle Returned handle of the new created GPIO bundle
* @return
* - ESP_OK: Create GPIO bundle successfully
* - ESP_ERR_INVALID_ARG: Create GPIO bundle failed because of invalid argument
* - ESP_ERR_NO_MEM: Create GPIO bundle failed because of no capable memory
* - ESP_ERR_NOT_FOUND: Create GPIO bundle failed because of no enough continuous dedicated channels
* - ESP_FAIL: Create GPIO bundle failed because of other error
*
* @note One has to enable at least input or output mode in "config" parameter.
*/
esp_err_t dedic_gpio_new_bundle(const dedic_gpio_bundle_config_t *config, dedic_gpio_bundle_handle_t *ret_bundle);
/**
* @brief Destroy GPIO bundle
*
* @param[in] bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @return
* - ESP_OK: Destroy GPIO bundle successfully
* - ESP_ERR_INVALID_ARG: Destroy GPIO bundle failed because of invalid argument
* - ESP_FAIL: Destroy GPIO bundle failed because of other error
*/
esp_err_t dedic_gpio_del_bundle(dedic_gpio_bundle_handle_t bundle);
/**@{*/
/**
* @brief Get allocated channel mask
*
* @param[in] bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @param[out] mask Returned mask value for on specific direction (in or out)
* @return
* - ESP_OK: Get channel mask successfully
* - ESP_ERR_INVALID_ARG: Get channel mask failed because of invalid argument
* - ESP_FAIL: Get channel mask failed because of other error
*
* @note Each bundle should have at least one mask (in or/and out), based on bundle configuration.
* @note With the returned mask, user can directly invoke LL function like "dedic_gpio_cpu_ll_write_mask"
* or write assembly code with dedicated GPIO instructions, to get better performance on GPIO manipulation.
*/
esp_err_t dedic_gpio_get_out_mask(dedic_gpio_bundle_handle_t bundle, uint32_t *mask);
esp_err_t dedic_gpio_get_in_mask(dedic_gpio_bundle_handle_t bundle, uint32_t *mask);
/**@}*/
/**@{*/
/**
* @brief Get the channel offset of the GPIO bundle
*
* A GPIO bundle maps the GPIOS of a particular direction to a consecutive set of channels within
* a particular GPIO bank of a particular CPU. This function returns the offset to
* the bundle's first channel of a particular direction within the bank.
*
* @param[in] bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @param[out] offset Offset value to the first channel of a specific direction (in or out)
* @return
* - ESP_OK: Get channel offset successfully
* - ESP_ERR_INVALID_ARG: Get channel offset failed because of invalid argument
* - ESP_FAIL: Get channel offset failed because of other error
*/
esp_err_t dedic_gpio_get_out_offset(dedic_gpio_bundle_handle_t bundle, uint32_t *offset);
esp_err_t dedic_gpio_get_in_offset(dedic_gpio_bundle_handle_t bundle, uint32_t *offset);
/**@}*/
/**
* @brief Write value to GPIO bundle
*
* @param[in] bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @param[in] mask Mask of the GPIOs to be written in the given bundle
* @param[in] value Value to write to given GPIO bundle, low bit represents low member in the bundle
*
* @note The mask is seen from the view of GPIO bundle.
* For example, bundleA contains [GPIO10, GPIO12, GPIO17], to set GPIO17 individually, the mask should be 0x04.
* @note For performance reasons, this function doesn't check the validity of any parameters, and is placed in IRAM.
*/
void dedic_gpio_bundle_write(dedic_gpio_bundle_handle_t bundle, uint32_t mask, uint32_t value) IRAM_ATTR;
/**
* @brief Read the value that output from the given GPIO bundle
*
* @param[in] bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @return Value that output from the GPIO bundle, low bit represents low member in the bundle
*
* @note For performance reasons, this function doesn't check the validity of any parameters, and is placed in IRAM.
*/
uint32_t dedic_gpio_bundle_read_out(dedic_gpio_bundle_handle_t bundle) IRAM_ATTR;
/**
* @brief Read the value that input to the given GPIO bundle
*
* @param[in] bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @return Value that input to the GPIO bundle, low bit represents low member in the bundle
*
* @note For performance reasons, this function doesn't check the validity of any parameters, and is placed in IRAM.
*/
uint32_t dedic_gpio_bundle_read_in(dedic_gpio_bundle_handle_t bundle) IRAM_ATTR;
#if SOC_DEDIC_GPIO_HAS_INTERRUPT
/**
* @brief Supported type of dedicated GPIO interrupt
*/
typedef enum {
DEDIC_GPIO_INTR_NONE, /*!< No interrupt */
DEDIC_GPIO_INTR_LOW_LEVEL = 2, /*!< Interrupt on low level */
DEDIC_GPIO_INTR_HIGH_LEVEL, /*!< Interrupt on high level */
DEDIC_GPIO_INTR_NEG_EDGE, /*!< Interrupt on negedge */
DEDIC_GPIO_INTR_POS_EDGE, /*!< Interrupt on posedge */
DEDIC_GPIO_INTR_BOTH_EDGE /*!< Interrupt on both negedge and posedge */
} dedic_gpio_intr_type_t;
/**
* @brief Type of dedicated GPIO ISR callback function
*
* @param bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @param index Index of the GPIO in its corresponding bundle (count from 0)
* @param args User defined arguments for the callback function. It's passed through `dedic_gpio_bundle_set_interrupt_and_callback`
* @return If a high priority task is woken up by the callback function
*/
typedef bool (*dedic_gpio_isr_callback_t)(dedic_gpio_bundle_handle_t bundle, uint32_t index, void *args);
/**
* @brief Set interrupt and callback function for GPIO bundle
*
* @param[in] bundle Handle of GPIO bundle that returned from "dedic_gpio_new_bundle"
* @param[in] mask Mask of the GPIOs in the given bundle
* @param[in] intr_type Interrupt type, set to DEDIC_GPIO_INTR_NONE can disable interrupt
* @param[in] cb_isr Callback function, which got invoked in ISR context. A NULL pointer here will bypass the callback
* @param[in] cb_args User defined argument to be passed to the callback function
*
* @note This function is only valid for bundle with input mode enabled. See "dedic_gpio_bundle_config_t"
* @note The mask is seen from the view of GPIO Bundle.
* For example, bundleA contains [GPIO10, GPIO12, GPIO17], to set GPIO17 individually, the mask should be 0x04.
*
* @return
* - ESP_OK: Set GPIO interrupt and callback function successfully
* - ESP_ERR_INVALID_ARG: Set GPIO interrupt and callback function failed because of invalid argument
* - ESP_FAIL: Set GPIO interrupt and callback function failed because of other error
*/
esp_err_t dedic_gpio_bundle_set_interrupt_and_callback(dedic_gpio_bundle_handle_t bundle, uint32_t mask, dedic_gpio_intr_type_t intr_type, dedic_gpio_isr_callback_t cb_isr, void *cb_args);
#endif // SOC_DEDIC_GPIO_HAS_INTERRUPT
#ifdef __cplusplus
}
#endif
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