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extmod/modbluetooth: Implement MTU.

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This commit is contained in:
Jim Mussared
2020-09-11 18:12:36 +10:00
parent f271b96b5c
commit 857e2c8fd5
4 changed files with 116 additions and 4 deletions
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44
extmod/nimble/modbluetooth_nimble.c
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@@ -288,9 +288,17 @@ STATIC int gap_event_cb(struct ble_gap_event *event, void *arg) {
// Map "done/ack" to 0, otherwise pass the status directly.
mp_bluetooth_gatts_on_indicate_complete(event->notify_tx.conn_handle, event->notify_tx.attr_handle, event->notify_tx.status == BLE_HS_EDONE ? 0 : event->notify_tx.status);
}
break;
}
case BLE_GAP_EVENT_MTU: {
if (event->mtu.channel_id == BLE_L2CAP_CID_ATT) {
DEBUG_printf("gap_event_cb: mtu update: conn_handle=%d cid=%d mtu=%d\n", event->mtu.conn_handle, event->mtu.channel_id, event->mtu.value);
mp_bluetooth_gatts_on_mtu_exchanged(event->mtu.conn_handle, event->mtu.value);
}
break;
}
}
return 0;
}
@@ -637,7 +645,7 @@ int mp_bluetooth_gatts_register_service_begin(bool append) {
return 0;
}
int mp_bluetooth_gatts_register_service_end() {
int mp_bluetooth_gatts_register_service_end(void) {
int ret = ble_gatts_start();
if (ret != 0) {
return ble_hs_err_to_errno(ret);
@@ -769,6 +777,23 @@ int mp_bluetooth_gatts_set_buffer(uint16_t value_handle, size_t len, bool append
return mp_bluetooth_gatts_db_resize(MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db, value_handle, len, append);
}
int mp_bluetooth_get_preferred_mtu(void) {
if (!mp_bluetooth_is_active()) {
mp_raise_OSError(ERRNO_BLUETOOTH_NOT_ACTIVE);
}
return ble_att_preferred_mtu();
}
int mp_bluetooth_set_preferred_mtu(uint16_t mtu) {
if (!mp_bluetooth_is_active()) {
return ERRNO_BLUETOOTH_NOT_ACTIVE;
}
if (ble_att_set_preferred_mtu(mtu)) {
return MP_EINVAL;
}
return 0;
}
#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
STATIC void gattc_on_data_available(uint8_t event, uint16_t conn_handle, uint16_t value_handle, const struct os_mbuf *om) {
@@ -884,6 +909,14 @@ STATIC int peripheral_gap_event_cb(struct ble_gap_event *event, void *arg) {
// TODO
break;
case BLE_GAP_EVENT_MTU: {
if (event->mtu.channel_id == BLE_L2CAP_CID_ATT) {
DEBUG_printf("peripheral_gap_event_cb: mtu update: conn_handle=%d cid=%d mtu=%d\n", event->mtu.conn_handle, event->mtu.channel_id, event->mtu.value);
mp_bluetooth_gatts_on_mtu_exchanged(event->mtu.conn_handle, event->mtu.value);
}
break;
}
default:
break;
}
@@ -1042,6 +1075,13 @@ int mp_bluetooth_gattc_write(uint16_t conn_handle, uint16_t value_handle, const
return ble_hs_err_to_errno(err);
}
int mp_bluetooth_gattc_exchange_mtu(uint16_t conn_handle) {
DEBUG_printf("mp_bluetooth_exchange_mtu: conn_handle=%d mtu=%d\n", conn_handle, ble_att_preferred_mtu());
// Using NULL callback (we'll get notified in gap_event_cb instead).
return ble_hs_err_to_errno(ble_gattc_exchange_mtu(conn_handle, NULL, NULL));
}
#endif // MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
#endif // MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_NIMBLE