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extmod/modbluetooth: Add send_update arg to gatts_write.

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This allows the write to trigger a notification or indication, but only to
subscribed clients. This is different to gatts_notify/gatts_indicate,
which will unconditionally notify/indicate.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
This commit is contained in:
Jim Mussared
2021-07-23 15:12:26 +10:00
committed by Damien George
parent 5733c49174
commit 1d9e489af3
6 changed files with 42 additions and 18 deletions
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13
extmod/nimble/modbluetooth_nimble.c
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@@ -512,6 +512,11 @@ STATIC int central_gap_event_cb(struct ble_gap_event *event, void *arg) {
return 0;
}
case BLE_GAP_EVENT_SUBSCRIBE: {
DEBUG_printf("central_gap_event_cb: subscribe: handle=%d, reason=%d notify=%d indicate=%d \n", event->subscribe.attr_handle, event->subscribe.reason, event->subscribe.cur_notify, event->subscribe.cur_indicate);
return 0;
}
}
return commmon_gap_event_cb(event, arg);
@@ -1004,11 +1009,15 @@ int mp_bluetooth_gatts_read(uint16_t value_handle, uint8_t **value, size_t *valu
return mp_bluetooth_gatts_db_read(MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db, value_handle, value, value_len);
}
int mp_bluetooth_gatts_write(uint16_t value_handle, const uint8_t *value, size_t value_len) {
int mp_bluetooth_gatts_write(uint16_t value_handle, const uint8_t *value, size_t value_len, bool send_update) {
if (!mp_bluetooth_is_active()) {
return ERRNO_BLUETOOTH_NOT_ACTIVE;
}
return mp_bluetooth_gatts_db_write(MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db, value_handle, value, value_len);
int err = mp_bluetooth_gatts_db_write(MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db, value_handle, value, value_len);
if (err == 0 && send_update) {
ble_gatts_chr_updated(value_handle);
}
return err;
}
// TODO: Could use ble_gatts_chr_updated to send to all subscribed centrals.