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extmod/btstack: Reset pending_value_handle before calling read-done cb. 

Similar to the previous commit but for MP_BLUETOOTH_IRQ_GATTC_READ_DONE:
the pending_value_handle needs to be reset before calling
mp_bluetooth_gattc_on_read_write_status(), which will call the Python IRQ
handler, which may in turn call back into BTstack to perform an action like
a write.  In that case the pending_value_handle will need to be available
for the write/read/etc to proceed.

Fixes issue #13634.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2024-02-11 15:08:08 +11:00
parent e7ff724a87
commit 02df2b09d4
3 changed files with 18 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
extmod/btstack/modbluetooth_btstack.c
View File

@ -462,8 +462,9 @@ STATIC void btstack_packet_handler_read(uint8_t packet_type, uint16_t channel, u
if (!conn) {
return;
}
mp_bluetooth_gattc_on_read_write_status(MP_BLUETOOTH_IRQ_GATTC_READ_DONE, conn_handle, conn->pending_value_handle, status);
uint16_t value_handle = conn->pending_value_handle;
conn->pending_value_handle = 0xffff;
mp_bluetooth_gattc_on_read_write_status(MP_BLUETOOTH_IRQ_GATTC_READ_DONE, conn_handle, value_handle, status);
} else if (event_type == GATT_EVENT_CHARACTERISTIC_VALUE_QUERY_RESULT) {
DEBUG_printf(" --> gatt characteristic value query result\n");
uint16_t conn_handle = gatt_event_characteristic_value_query_result_get_handle(packet);

14
tests/multi_bluetooth/ble_irq_calls.py
View File

@ -65,8 +65,9 @@ class Central:
self.done = False
self._conn_handle = None
self._service = None
self._characteristic = None
self._characteristic_handle = None
self._cccd_handle = None
self._reads_remaining = None
ble.active(1)
ble.irq(self._ble_event_handler)
ble.gap_connect(*BDADDR)
@ -101,7 +102,8 @@ class Central:
_, end_handle, value_handle, properties, uuid = data
assert uuid == STATE_UUID
print("characteristic found:", uuid)
self._characteristic = (end_handle, value_handle, properties)
assert self._characteristic_handle is None
self._characteristic_handle = value_handle
elif event == _IRQ_GATTC_CHARACTERISTIC_DONE:
start_handle, end_handle = self._service
@ -128,15 +130,19 @@ class Central:
elif event == _IRQ_GATTC_WRITE_DONE:
conn_handle, _, result = data
print("CCCD write result:", result)
_, state_handle, _ = self._characteristic
print("issue gattc_read")
ble.gattc_read(self._conn_handle, state_handle)
self._reads_remaining = 2
ble.gattc_read(self._conn_handle, self._characteristic_handle)
elif event == _IRQ_GATTC_READ_RESULT:
_, _, char_data = data
print("gattc_read result:", bytes(char_data))
elif event == _IRQ_GATTC_READ_DONE:
self._reads_remaining -= 1
if self._reads_remaining > 0:
ble.gattc_read(self._conn_handle, self._characteristic_handle)
else:
self.done = True
ble.gap_disconnect(self._conn_handle)

4
tests/multi_bluetooth/ble_irq_calls.py.exp
View File

@ -3,6 +3,7 @@ peripheral start
_IRQ_CENTRAL_CONNECT
_IRQ_MTU_EXCHANGED
_IRQ_GATTS_READ_REQUEST
_IRQ_GATTS_READ_REQUEST
_IRQ_CENTRAL_DISCONNECT
--- instance1 ---
central start
@ -27,5 +28,8 @@ issue gattc_read
_IRQ_GATTC_READ_RESULT
gattc_read result: b''
_IRQ_GATTC_READ_DONE
_IRQ_GATTC_READ_RESULT
gattc_read result: b''
_IRQ_GATTC_READ_DONE
_IRQ_PERIPHERAL_DISCONNECT
connection closed