[esp32_ble] Make BLE notification limit configurable to fix ESP_GATT_NO_RESOURCES errors (#10098)

This commit is contained in:
J. Nick Koston 2025-08-06 07:24:02 -10:00 committed by GitHub
parent 2b3e546203
commit 5021cc6d5f
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2 changed files with 15 additions and 5 deletions

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@ -118,6 +118,7 @@ CONF_IO_CAPABILITY = "io_capability"
CONF_ADVERTISING_CYCLE_TIME = "advertising_cycle_time"
CONF_DISABLE_BT_LOGS = "disable_bt_logs"
CONF_CONNECTION_TIMEOUT = "connection_timeout"
CONF_MAX_NOTIFICATIONS = "max_notifications"
NO_BLUETOOTH_VARIANTS = [const.VARIANT_ESP32S2]
@ -173,6 +174,11 @@ CONFIG_SCHEMA = cv.Schema(
cv.positive_time_period_seconds,
cv.Range(min=TimePeriod(seconds=10), max=TimePeriod(seconds=180)),
),
cv.SplitDefault(CONF_MAX_NOTIFICATIONS, esp32_idf=12): cv.All(
cv.only_with_esp_idf,
cv.positive_int,
cv.Range(min=1, max=64),
),
}
).extend(cv.COMPONENT_SCHEMA)
@ -272,6 +278,15 @@ async def to_code(config):
"CONFIG_BT_BLE_ESTAB_LINK_CONN_TOUT", timeout_seconds
)
# Set the maximum number of notification registrations
# This controls how many BLE characteristics can have notifications enabled
# across all connections for a single GATT client interface
# https://github.com/esphome/issues/issues/6808
if CONF_MAX_NOTIFICATIONS in config:
add_idf_sdkconfig_option(
"CONFIG_BT_GATTC_NOTIF_REG_MAX", config[CONF_MAX_NOTIFICATIONS]
)
cg.add_define("USE_ESP32_BLE")

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@ -355,11 +355,6 @@ async def to_code(config):
add_idf_sdkconfig_option(
"CONFIG_BTDM_CTRL_BLE_MAX_CONN", config[CONF_MAX_CONNECTIONS]
)
# CONFIG_BT_GATTC_NOTIF_REG_MAX controls the number of
# max notifications in 5.x, setting CONFIG_BT_ACL_CONNECTIONS
# is enough in 4.x
# https://github.com/esphome/issues/issues/6808
add_idf_sdkconfig_option("CONFIG_BT_GATTC_NOTIF_REG_MAX", 9)
cg.add_define("USE_OTA_STATE_CALLBACK") # To be notified when an OTA update starts
cg.add_define("USE_ESP32_BLE_CLIENT")