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docs(ble): Added more explanations for memory release related API

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This commit is contained in:
Yuhan Wei
2024-07-10 09:31:44 +08:00
parent ea5a48836d
commit 075bb4831d
1 changed files with 24 additions and 22 deletions
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46
components/bt/include/esp32/include/esp_bt.h
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@@ -272,22 +272,22 @@ typedef enum {
/**
* @brief BLE TX power type
* @note
* 1. The connection TX power can only be set after the connection is established.
* 1. Please use `ESP_BLE_PWR_TYPE_DEFAULT` to set connection TX power before establishing the connection.
* After disconnecting, the corresponding TX power will not be affected.
* 2. `ESP_BLE_PWR_TYPE_DEFAULT` can be used to set the TX power for power types that have not been set before.
* It will not affect the TX power values which have been set for the following CONN0-8/ADV/SCAN power types.
* 3. If none of power type is set, the system will use `ESP_PWR_LVL_P3` as default for ADV/SCAN/CONN0-8.
* It will not affect the TX power values which have been set for the ADV/SCAN power types.
* 3. If none of power type is set, the system will use `ESP_PWR_LVL_P3` as default for all power types.
*/
typedef enum {
ESP_BLE_PWR_TYPE_CONN_HDL0 = 0, /*!< TX power for connection handle 0 */
ESP_BLE_PWR_TYPE_CONN_HDL1 = 1, /*!< TX power for connection handle 1 */
ESP_BLE_PWR_TYPE_CONN_HDL2 = 2, /*!< TX power for connection handle 2 */
ESP_BLE_PWR_TYPE_CONN_HDL3 = 3, /*!< TX power for connection handle 3 */
ESP_BLE_PWR_TYPE_CONN_HDL4 = 4, /*!< TX power for connection handle 4 */
ESP_BLE_PWR_TYPE_CONN_HDL5 = 5, /*!< TX power for connection handle 5 */
ESP_BLE_PWR_TYPE_CONN_HDL6 = 6, /*!< TX power for connection handle 6 */
ESP_BLE_PWR_TYPE_CONN_HDL7 = 7, /*!< TX power for connection handle 7 */
ESP_BLE_PWR_TYPE_CONN_HDL8 = 8, /*!< TX power for connection handle 8 */
ESP_BLE_PWR_TYPE_CONN_HDL0 = 0, /*!< TX power for connection handle 0. Currently not effective */
ESP_BLE_PWR_TYPE_CONN_HDL1 = 1, /*!< TX power for connection handle 1. Currently not effective */
ESP_BLE_PWR_TYPE_CONN_HDL2 = 2, /*!< TX power for connection handle 2. Currently not effective */
ESP_BLE_PWR_TYPE_CONN_HDL3 = 3, /*!< TX power for connection handle 3. Currently not effective */
ESP_BLE_PWR_TYPE_CONN_HDL4 = 4, /*!< TX power for connection handle 4. Currently not effective */
ESP_BLE_PWR_TYPE_CONN_HDL5 = 5, /*!< TX power for connection handle 5. Currently not effective */
ESP_BLE_PWR_TYPE_CONN_HDL6 = 6, /*!< TX power for connection handle 6. Currently not effective */
ESP_BLE_PWR_TYPE_CONN_HDL7 = 7, /*!< TX power for connection handle 7. Currently not effective */
ESP_BLE_PWR_TYPE_CONN_HDL8 = 8, /*!< TX power for connection handle 8. Currently not effective */
ESP_BLE_PWR_TYPE_ADV = 9, /*!< TX power for advertising */
ESP_BLE_PWR_TYPE_SCAN = 10, /*!< TX power for scan */
ESP_BLE_PWR_TYPE_DEFAULT = 11, /*!< Default TX power type, which can be used to set the TX power for power types that have not been set before.*/
@@ -514,6 +514,12 @@ esp_err_t esp_vhci_host_register_callback(const esp_vhci_host_callback_t *callba
*
* This function releases the BSS, data and other sections of the Controller to heap. The total size is about 70 KB.
*
* @note
* 1. This function is optional and should be called only if you want to free up memory for other components.
* 2. This function should be called only before `esp_bt_controller_init()` or after `esp_bt_controller_deinit()`.
* 3. Once Bluetooth Controller memory is released, the process cannot be reversed. This means you cannot use the Bluetooth Controller mode that you have released using this function.
* 4. If your firmware will upgrade the Bluetooth Controller mode later (such as switching from BLE to Classic Bluetooth or from disabled to enabled), then do not call this function.
*
* If the app calls `esp_bt_controller_enable(ESP_BT_MODE_BLE)` to use BLE only,
* then it is safe to call `esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT)` at initialization time to free unused Classic Bluetooth memory.
*
@@ -521,11 +527,6 @@ esp_err_t esp_vhci_host_register_callback(const esp_vhci_host_callback_t *callba
* which internally calls `esp_bt_controller_mem_release(ESP_BT_MODE_BTDM)` and additionally releases the BSS and data
* consumed by the Classic Bluetooth/BLE Host stack to heap. For more details about usage please refer to the documentation of `esp_bt_mem_release()` function.
*
* @note
* 1. This function should be called only before `esp_bt_controller_init()` or after `esp_bt_controller_deinit()`.
* 2. Once Bluetooth Controller memory is released, the process cannot be reversed. This means you cannot use the Bluetooth Controller mode that you have released using this function.
* 3. If your firmware will upgrade the Bluetooth Controller mode later (such as switching from BLE to Classic Bluetooth or from disabled to enabled), then do not call this function.
*
* @param[in] mode The Bluetooth Controller mode
*
* @return
@@ -536,6 +537,12 @@ esp_err_t esp_vhci_host_register_callback(const esp_vhci_host_callback_t *callba
esp_err_t esp_bt_controller_mem_release(esp_bt_mode_t mode);
/** @brief Release the Controller memory, BSS and data section of the Classic Bluetooth/BLE Host stack as per the mode
*
* @note
* 1. This function is optional and should be called only if you want to free up memory for other components.
* 2. Once Bluetooth Controller memory is released, the process cannot be reversed. This means you cannot use the Bluetooth Controller mode that you have released using this function.
* 3. If your firmware will upgrade the Bluetooth Controller mode later (such as switching from BLE to Classic Bluetooth or from disabled to enabled), then do not call this function.
* 4. In case of NimBLE Host, to release BSS and data memory to heap, the mode needs to be set to `ESP_BT_MODE_BTDM` as the Controller is in Dual mode.
*
* This function first releases Controller memory by internally calling `esp_bt_controller_mem_release()`.
* Additionally, if the mode is set to `ESP_BT_MODE_BTDM`, it also releases the BSS and data consumed by the Classic Bluetooth and BLE Host stack to heap.
@@ -553,11 +560,6 @@ esp_err_t esp_bt_controller_mem_release(esp_bt_mode_t mode);
* esp_bt_controller_deinit();
* esp_bt_mem_release(ESP_BT_MODE_BTDM);
*
* @note
* 1. Once Bluetooth Controller memory is released, the process cannot be reversed. This means you cannot use the Bluetooth Controller mode that you have released using this function.
* 2. If your firmware will upgrade the Bluetooth Controller mode later (such as switching from BLE to Classic Bluetooth or from disabled to enabled), then do not call this function.
* 3. In case of NimBLE Host, to release BSS and data memory to heap, the mode needs to be set to `ESP_BT_MODE_BTDM` as the Controller is in Dual mode.
*
* @param[in] mode The Bluetooth Controller mode
*
* @return