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extmod/nimble: Fix flags for descriptor registration.

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The att_flags for descriptors does not use the same bitfield as for
characteristics. This was leading to NimBLE descriptors getting the wrong
flags set.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
This commit is contained in:
Jim Mussared 2023-04-12 00:16:47 +10:00
parent bb4ee06d98
commit e6de6656f4
1 changed files with 10 additions and 1 deletions
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11
extmod/nimble/modbluetooth_nimble.c
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@ -851,6 +851,7 @@ static int characteristic_access_cb(uint16_t conn_handle, uint16_t value_handle,
switch (ctxt->op) {
case BLE_GATT_ACCESS_OP_READ_CHR:
case BLE_GATT_ACCESS_OP_READ_DSC: {
DEBUG_printf("write for %d %d (op=%d)\n", conn_handle, value_handle, ctxt->op);
// Allow Python code to override (by using gatts_write), or deny (by returning false) the read.
// Note this will be a no-op if the ringbuffer implementation is being used (i.e. the stack isn't
// run in the scheduler). The ringbuffer is not used on STM32 and Unix-H4 only.
@ -872,6 +873,7 @@ static int characteristic_access_cb(uint16_t conn_handle, uint16_t value_handle,
}
case BLE_GATT_ACCESS_OP_WRITE_CHR:
case BLE_GATT_ACCESS_OP_WRITE_DSC:
DEBUG_printf("write for %d %d (op=%d)\n", conn_handle, value_handle, ctxt->op);
entry = mp_bluetooth_gatts_db_lookup(MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db, value_handle);
if (!entry) {
return BLE_ATT_ERR_ATTR_NOT_FOUND;
@ -963,7 +965,14 @@ int mp_bluetooth_gatts_register_service(mp_obj_bluetooth_uuid_t *service_uuid, m
descriptors[j].uuid = create_nimble_uuid(descriptor_uuids[descriptor_index], NULL);
descriptors[j].access_cb = characteristic_access_cb;
// NimBLE doesn't support security/privacy options on descriptors.
descriptors[j].att_flags = (uint8_t)descriptor_flags[descriptor_index];
uint8_t desc_att_flags = 0;
if (descriptor_flags[descriptor_index] & MP_BLUETOOTH_CHARACTERISTIC_FLAG_READ) {
desc_att_flags |= BLE_ATT_F_READ;
}
if (descriptor_flags[descriptor_index] & (MP_BLUETOOTH_CHARACTERISTIC_FLAG_WRITE | MP_BLUETOOTH_CHARACTERISTIC_FLAG_WRITE_NO_RESPONSE)) {
desc_att_flags |= BLE_ATT_F_WRITE;
}
descriptors[j].att_flags = desc_att_flags;
descriptors[j].min_key_size = 0;
// Unlike characteristic, Nimble doesn't provide an automatic way to remember the handle, so use the arg.
descriptors[j].arg = &handles[handle_index];