add some code

managed_components/espressif__esp_io_expander_tca95xx_16bit/include/esp_io_expander_tca95xx_16bit.h

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+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include "esp_err.h"
+#include "driver/i2c_master.h"
+#include "esp_io_expander.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Create a TCA95539 or TCA9555 IO expander object
+ *
+ * @param[in]  i2c_bus    I2C bus handle. Obtained from `i2c_new_master_bus()`
+ * @param[in]  dev_addr   I2C device address of chip. Can be `ESP_IO_EXPANDER_I2C_TCA9539_ADDRESS_XX` or `ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_XXX`.
+ * @param[out] handle_ret Handle to created IO expander object
+ *
+ * @return
+ *      - ESP_OK: Success, otherwise returns ESP_ERR_xxx
+ */
+esp_err_t esp_io_expander_new_i2c_tca95xx_16bit(i2c_master_bus_handle_t i2c_bus, uint32_t dev_addr, esp_io_expander_handle_t *handle_ret);
+
+/**
+ * @brief I2C address of the TCA9539 or TCA9555
+ *
+ * The 8-bit address format for the TCA9539 is as follows:
+ *
+ *                (Slave Address)
+ *     ┌─────────────────┷─────────────────┐
+ *  ┌─────┐─────┐─────┐─────┐─────┐─────┐─────┐─────┐
+ *  |  1  |  1  |  1  |  0  |  1  | A1  | A0  | R/W |
+ *  └─────┘─────┘─────┘─────┘─────┘─────┘─────┘─────┘
+ *     └────────┯──────────────┘     └──┯──┘
+ *           (Fixed)        (Hareware Selectable)
+ *
+ * The 8-bit address format for the TCA9555 is as follows:
+ *
+ *                (Slave Address)
+ *     ┌─────────────────┷─────────────────┐
+ *  ┌─────┐─────┐─────┐─────┐─────┐─────┐─────┐─────┐
+ *  |  0  |  1  |  0  |  0  | A2  | A1  | A0  | R/W |
+ *  └─────┘─────┘─────┘─────┘─────┘─────┘─────┘─────┘
+ *     └────────┯────────┘     └─────┯──────┘
+ *           (Fixed)        (Hareware Selectable)
+ *
+ * And the 7-bit slave address is the most important data for users.
+ * For example, if a TCA9555 chip's A0,A1,A2 are connected to GND, it's 7-bit slave address is 0b0100000.
+ * Then users can use `ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_000` to init it.
+ */
+enum esp_io_expander_tca_95xx_16bit_address {
+    ESP_IO_EXPANDER_I2C_TCA9539_ADDRESS_00 = 0b1110100,
+    ESP_IO_EXPANDER_I2C_TCA9539_ADDRESS_01 = 0b1110101,
+    ESP_IO_EXPANDER_I2C_TCA9539_ADDRESS_10 = 0b1110110,
+    ESP_IO_EXPANDER_I2C_TCA9539_ADDRESS_11 = 0b1110111,
+    ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_000 = 0b0100000,
+    ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_001 = 0b0100001,
+    ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_010 = 0b0100010,
+    ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_011 = 0b0100011,
+    ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_100 = 0b0100000,
+    ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_101 = 0b0100101,
+    ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_110 = 0b0100110,
+    ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_111 = 0b0100111,
+};
+
+#ifdef __cplusplus
+}
+#endif