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fix(examples): improve bluedroid BLE example error handling

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Check GAP/GATT event status, fix prepare-write buffer lifecycle, and
align example code with updated Bluedroid API behavior.

(cherry picked from commit bfc47ace48)

Co-authored-by: zhiweijian <zhiweijian@espressif.com>
This commit is contained in:
Zhi Wei Jian
2026-06-12 10:54:03 +08:00
committed by zhiweijian
parent ccd011323c
commit 29a6200e40
48 changed files with 1606 additions and 721 deletions
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examples/bluetooth/bluedroid/ble/ble_compatibility_test/main/ble_compatibility_test.c
+14 -3
View File
@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2021-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2021-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
@@ -7,6 +7,7 @@
/********************************************************************************
*
* This file is for gatt server. It can send adv data, and get connected by client.
* Only one BLE ACL connection is supported (see sdkconfig.defaults: CONFIG_BT_ACL_CONNECTIONS=1).
*
*********************************************************************************/
@@ -65,6 +66,7 @@ typedef struct {
int prepare_len;
} prepare_type_env_t;
/* This demo targets one connected client; a single prepare-write buffer is enough. */
static prepare_type_env_t prepare_write_env;
//#define CONFIG_SET_RAW_ADV_DATA
@@ -441,7 +443,11 @@ void example_prepare_write_event_env(esp_gatt_if_t gatts_if, prepare_type_env_t
memcpy(prepare_write_env->prepare_buf + param->write.offset,
param->write.value,
param->write.len);
prepare_write_env->prepare_len += param->write.len;
/* Extent of prepared value: max(offset+len), not sum(len) — overlaps/retries must not inflate length. */
uint32_t span_end = (uint32_t)param->write.offset + (uint32_t)param->write.len;
if (span_end > (uint32_t)prepare_write_env->prepare_len) {
prepare_write_env->prepare_len = (int)span_end;
}
}
uint8_t long_write[16] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF};
@@ -562,7 +568,7 @@ static void gatts_profile_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_
break;
case ESP_GATTS_EXEC_WRITE_EVT:
// the length of gattc prepare write data must be less than GATTS_EXAMPLE_CHAR_VAL_LEN_MAX.
ESP_LOGI(EXAMPLE_TAG, "ESP_GATTS_EXEC_WRITE_EVT, Length=%d", prepare_write_env.prepare_len);
ESP_LOGI(EXAMPLE_TAG, "ESP_GATTS_EXEC_WRITE_EVT, Length=%d", prepare_write_env.prepare_len);
example_exec_write_event_env(&prepare_write_env, param);
break;
case ESP_GATTS_MTU_EVT:
@@ -581,6 +587,11 @@ static void gatts_profile_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_
break;
case ESP_GATTS_DISCONNECT_EVT:
ESP_LOGI(EXAMPLE_TAG, "ESP_GATTS_DISCONNECT_EVT, reason = %d", param->disconnect.reason);
if (prepare_write_env.prepare_buf) {
free(prepare_write_env.prepare_buf);
prepare_write_env.prepare_buf = NULL;
}
prepare_write_env.prepare_len = 0;
esp_ble_gap_start_advertising(&adv_params);
break;
case ESP_GATTS_CREAT_ATTR_TAB_EVT:{