/*
 * SPDX-FileCopyrightText: 2015-2026 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#ifndef __SLAVE_BT_H__
#define __SLAVE_BT_H__

#include "esp_err.h"
#include "esp_idf_version.h"
#include <stdbool.h>

#if defined(CONFIG_ESP_HOSTED_CP_BT) && (!defined(CONFIG_BT_ENABLED) || !defined(CONFIG_SOC_BT_SUPPORTED))
#error "CONFIG_ESP_HOSTED_CP_BT is enabled but CONFIG_BT_ENABLED or CONFIG_SOC_BT_SUPPORTED is not enabled. Please enable BT support in menuconfig."
#endif

#ifdef CONFIG_ESP_HOSTED_CP_BT

#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
  #include "driver/periph_ctrl.h"
  #define DISABLE_INTR_ON_GPIO GPIO_PIN_INTR_DISABLE
#else
  #include "esp_private/periph_ctrl.h"
  #define DISABLE_INTR_ON_GPIO GPIO_INTR_DISABLE
#endif

#if (defined(CONFIG_IDF_TARGET_ESP32C3) || \
	 defined(CONFIG_IDF_TARGET_ESP32S3))
  #define BT_OVER_C3_S3 1
#endif

#if CONFIG_IDF_TARGET_ESP32

  #if defined(CONFIG_BTDM_CONTROLLER_MODE_BLE_ONLY)
    #define BLUETOOTH_BLE    1
  #elif defined(CONFIG_BTDM_CONTROLLER_MODE_BR_EDR_ONLY)
    #define BLUETOOTH_BT     2
  #elif defined(CONFIG_BTDM_CONTROLLER_MODE_BTDM)
    #define BLUETOOTH_BT_BLE 3
  #endif

  #if defined(CONFIG_BTDM_CONTROLLER_HCI_MODE_VHCI)
    #define BLUETOOTH_HCI    4
  #elif CONFIG_BT_HCI_UART_NO
    #define BLUETOOTH_UART   CONFIG_BT_HCI_UART_NO
  #elif CONFIG_BTDM_CTRL_HCI_UART_NO
    #define BLUETOOTH_UART   CONFIG_BTDM_CTRL_HCI_UART_NO
  #endif

#elif BT_OVER_C3_S3

  #define BLUETOOTH_BLE      1

  #if defined(CONFIG_BT_CTRL_HCI_MODE_VHCI)
    #define BLUETOOTH_HCI    4
  #elif CONFIG_BT_CTRL_HCI_MODE_UART_H4
    #define BLUETOOTH_UART   CONFIG_ESP_HOSTED_BT_UART_PORT_ESP32_C3_S3
  #endif

#else
  /* only BLE for chipsets other than ESP32 */

  #define BLUETOOTH_BLE      1

  #if defined(CONFIG_BT_LE_HCI_INTERFACE_USE_RAM)
    #define BLUETOOTH_HCI    4
  #elif defined(CONFIG_BT_LE_HCI_INTERFACE_USE_UART)
    #define BLUETOOTH_UART   CONFIG_BT_LE_HCI_UART_PORT
  #endif

#endif

#ifdef BLUETOOTH_UART

  #include "driver/uart.h"

  #if defined(CONFIG_IDF_TARGET_ESP32)

    // GPIO pins are fixed
    #define BT_TX_PIN	       CONFIG_ESP_HOSTED_BT_UART_TX_PIN_ESP32
    #define BT_RX_PIN	       CONFIG_ESP_HOSTED_BT_UART_RX_PIN_ESP32

    #if defined(CONFIG_BTDM_CTRL_HCI_UART_FLOW_CTRL_EN)
    #define BT_RTS_PIN         CONFIG_ESP_HOSTED_BT_UART_RTS_PIN_ESP32
    #define BT_CTS_PIN         CONFIG_ESP_HOSTED_BT_UART_CTS_PIN_ESP32
    #else
    #define BT_RTS_PIN         -1
    #define BT_CTS_PIN         -1
    #endif

  #elif BT_OVER_C3_S3

    #define BT_BAUDRATE         CONFIG_ESP_HOSTED_BT_UART_BAUDRATE_ESP32_C3_S3

    #if defined(CONFIG_IDF_TARGET_ESP32C3)

      #define BT_TX_PIN         CONFIG_ESP_HOSTED_BT_UART_TX_PIN_ESP32_C3_S3
      #define BT_RX_PIN         CONFIG_ESP_HOSTED_BT_UART_RX_PIN_ESP32_C3_S3

      #define BT_FLOWCTRL       CONFIG_ESP_HOSTED_BT_UART_FLOWCONTROL_ESP32_C3_S3

      #if CONFIG_ESP_HOSTED_BT_UART_FLOWCONTROL_ESP32_C3_S3
      #define BT_RTS_PIN        CONFIG_ESP_HOSTED_BT_UART_RTS_PIN_ESP32_C3_S3
      #define BT_CTS_PIN        CONFIG_ESP_HOSTED_BT_UART_CTS_PIN_ESP32_C3_S3
      #else
      #define BT_RTS_PIN        -1
      #define BT_CTS_PIN        -1
      #endif

    #elif defined(CONFIG_IDF_TARGET_ESP32S3)

      #define BT_TX_PIN         CONFIG_ESP_HOSTED_BT_UART_TX_PIN_ESP32_C3_S3
      #define BT_RX_PIN         CONFIG_ESP_HOSTED_BT_UART_RX_PIN_ESP32_C3_S3

      #define BT_FLOWCTRL       CONFIG_ESP_HOSTED_BT_UART_FLOWCONTROL_ESP32_C3_S3

      #if CONFIG_ESP_HOSTED_BT_UART_FLOWCONTROL_ESP32_C3_S3
      #define BT_RTS_PIN        CONFIG_ESP_HOSTED_BT_UART_RTS_PIN_ESP32_C3_S3
      #define BT_CTS_PIN        CONFIG_ESP_HOSTED_BT_UART_CTS_PIN_ESP32_C3_S3
      #else
      #define BT_RTS_PIN        -1
      #define BT_CTS_PIN        -1
      #endif

    #endif

    #define UART_RX_THRS       (120)

    #if defined(CONFIG_ESP_HOSTED_BT_UART_FLOWCONTROL_ENABLED)
    #define GPIO_OUTPUT_PIN_SEL  ((1ULL<<BT_TX_PIN) | (1ULL<<BT_RTS_PIN))
    #define GPIO_INPUT_PIN_SEL   ((1ULL<<BT_RX_PIN) | (1ULL<<BT_CTS_PIN))
    #else
    #define GPIO_OUTPUT_PIN_SEL  (1ULL<<BT_TX_PIN)
    #define GPIO_INPUT_PIN_SEL   (1ULL<<BT_RX_PIN)
    #endif

  #else

    #define BT_TX_PIN         CONFIG_BT_LE_HCI_UART_TX_PIN
    #define BT_RX_PIN         CONFIG_BT_LE_HCI_UART_RX_PIN

    #if defined(CONFIG_BT_LE_HCI_UART_FLOWCTRL)
    #define BT_RTS_PIN        CONFIG_BT_LE_HCI_UART_RTS_PIN
    #define BT_CTS_PIN        CONFIG_BT_LE_HCI_UART_CTS_PIN
    #else
    #define BT_RTS_PIN        -1
    #define BT_CTS_PIN        -1
    #endif

  #endif

#elif BLUETOOTH_HCI
  void process_hci_rx_pkt(uint8_t *payload, uint16_t payload_len);
#endif


esp_err_t init_bluetooth(void);
esp_err_t enable_bluetooth(void);
esp_err_t disable_bluetooth(void);
esp_err_t deinit_bluetooth(bool mem_release);

uint8_t get_bluetooth_capabilities(void);
uint32_t get_bluetooth_ext_capabilities(void);
#endif /* CONFIG_ESP_HOSTED_CP_BT */

#endif /* __SLAVE_BT_H__ */