883 lines
34 KiB
C
883 lines
34 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Damien P. George
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* Copyright (c) 2019 Jim Mussared
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "py/mperrno.h"
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#include "py/mphal.h"
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#if MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_NIMBLE
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#include "extmod/nimble/modbluetooth_nimble.h"
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#include "extmod/modbluetooth.h"
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#include "host/ble_hs.h"
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#include "host/util/util.h"
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#include "nimble/ble.h"
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#include "nimble/nimble_port.h"
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#include "services/gap/ble_svc_gap.h"
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#ifndef MICROPY_PY_BLUETOOTH_DEFAULT_GAP_NAME
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#define MICROPY_PY_BLUETOOTH_DEFAULT_GAP_NAME "MPY NIMBLE"
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#endif
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#define DEBUG_EVENT_printf(...) //printf(__VA_ARGS__)
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#define ERRNO_BLUETOOTH_NOT_ACTIVE MP_ENODEV
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STATIC int8_t ble_hs_err_to_errno_table[] = {
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[BLE_HS_EAGAIN] = MP_EAGAIN,
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[BLE_HS_EALREADY] = MP_EALREADY,
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[BLE_HS_EINVAL] = MP_EINVAL,
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[BLE_HS_EMSGSIZE] = MP_EIO,
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[BLE_HS_ENOENT] = MP_ENOENT,
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[BLE_HS_ENOMEM] = MP_ENOMEM,
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[BLE_HS_ENOTCONN] = MP_ENOTCONN,
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[BLE_HS_ENOTSUP] = MP_EOPNOTSUPP,
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[BLE_HS_EAPP] = MP_EIO,
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[BLE_HS_EBADDATA] = MP_EIO,
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[BLE_HS_EOS] = MP_EIO,
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[BLE_HS_ECONTROLLER] = MP_EIO,
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[BLE_HS_ETIMEOUT] = MP_ETIMEDOUT,
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[BLE_HS_EDONE] = MP_EIO, // TODO: Maybe should be MP_EISCONN (connect uses this for "already connected").
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[BLE_HS_EBUSY] = MP_EBUSY,
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[BLE_HS_EREJECT] = MP_EIO,
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[BLE_HS_EUNKNOWN] = MP_EIO,
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[BLE_HS_EROLE] = MP_EIO,
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[BLE_HS_ETIMEOUT_HCI] = MP_EIO,
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[BLE_HS_ENOMEM_EVT] = MP_EIO,
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[BLE_HS_ENOADDR] = MP_EIO,
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[BLE_HS_ENOTSYNCED] = MP_EIO,
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[BLE_HS_EAUTHEN] = MP_EIO,
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[BLE_HS_EAUTHOR] = MP_EIO,
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[BLE_HS_EENCRYPT] = MP_EIO,
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[BLE_HS_EENCRYPT_KEY_SZ] = MP_EIO,
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[BLE_HS_ESTORE_CAP] = MP_EIO,
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[BLE_HS_ESTORE_FAIL] = MP_EIO,
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[BLE_HS_EPREEMPTED] = MP_EIO,
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[BLE_HS_EDISABLED] = MP_EIO,
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};
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STATIC int ble_hs_err_to_errno(int err) {
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if (0 <= err && err < MP_ARRAY_SIZE(ble_hs_err_to_errno_table)) {
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return ble_hs_err_to_errno_table[err];
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} else {
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return MP_EIO;
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}
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}
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// Note: modbluetooth UUIDs store their data in LE.
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STATIC ble_uuid_t *create_nimble_uuid(const mp_obj_bluetooth_uuid_t *uuid) {
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if (uuid->type == MP_BLUETOOTH_UUID_TYPE_16) {
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ble_uuid16_t *result = m_new(ble_uuid16_t, 1);
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result->u.type = BLE_UUID_TYPE_16;
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result->value = (uuid->data[1] << 8) | uuid->data[0];
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return (ble_uuid_t *)result;
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} else if (uuid->type == MP_BLUETOOTH_UUID_TYPE_32) {
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ble_uuid32_t *result = m_new(ble_uuid32_t, 1);
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result->u.type = BLE_UUID_TYPE_32;
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result->value = (uuid->data[1] << 24) | (uuid->data[1] << 16) | (uuid->data[1] << 8) | uuid->data[0];
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return (ble_uuid_t *)result;
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} else if (uuid->type == MP_BLUETOOTH_UUID_TYPE_128) {
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ble_uuid128_t *result = m_new(ble_uuid128_t, 1);
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result->u.type = BLE_UUID_TYPE_128;
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memcpy(result->value, uuid->data, 16);
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return (ble_uuid_t *)result;
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} else {
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return NULL;
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}
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}
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#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
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STATIC mp_obj_bluetooth_uuid_t create_mp_uuid(const ble_uuid_any_t *uuid) {
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mp_obj_bluetooth_uuid_t result;
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switch (uuid->u.type) {
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case BLE_UUID_TYPE_16:
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result.type = MP_BLUETOOTH_UUID_TYPE_16;
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result.data[0] = uuid->u16.value & 0xff;
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result.data[1] = (uuid->u16.value >> 8) & 0xff;
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break;
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case BLE_UUID_TYPE_32:
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result.type = MP_BLUETOOTH_UUID_TYPE_32;
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result.data[0] = uuid->u32.value & 0xff;
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result.data[1] = (uuid->u32.value >> 8) & 0xff;
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result.data[2] = (uuid->u32.value >> 16) & 0xff;
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result.data[3] = (uuid->u32.value >> 24) & 0xff;
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break;
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case BLE_UUID_TYPE_128:
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result.type = MP_BLUETOOTH_UUID_TYPE_128;
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memcpy(result.data, uuid->u128.value, 16);
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break;
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default:
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assert(false);
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}
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return result;
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}
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// modbluetooth (and the layers above it) work in BE for addresses, Nimble works in LE.
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STATIC void reverse_addr_byte_order(uint8_t *addr_out, const uint8_t *addr_in) {
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for (int i = 0; i < 6; ++i) {
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addr_out[i] = addr_in[5 - i];
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}
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}
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STATIC ble_addr_t create_nimble_addr(uint8_t addr_type, const uint8_t *addr) {
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ble_addr_t addr_nimble;
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addr_nimble.type = addr_type;
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// Incoming addr is from modbluetooth (BE), so copy and convert to LE for Nimble.
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reverse_addr_byte_order(addr_nimble.val, addr);
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return addr_nimble;
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}
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#endif // MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
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volatile int mp_bluetooth_nimble_ble_state = MP_BLUETOOTH_NIMBLE_BLE_STATE_OFF;
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STATIC void reset_cb(int reason) {
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(void)reason;
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}
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STATIC void sync_cb(void) {
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int rc;
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ble_addr_t addr;
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rc = ble_hs_util_ensure_addr(0); // prefer public address
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if (rc != 0) {
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// https://mynewt.apache.org/latest/tutorials/ble/eddystone.html#configure-the-nimble-stack-with-an-address
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#if MICROPY_PY_BLUETOOTH_RANDOM_ADDR
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rc = ble_hs_id_gen_rnd(1, &addr);
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assert(rc == 0);
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rc = ble_hs_id_set_rnd(addr.val);
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assert(rc == 0);
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#else
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uint8_t addr_be[6];
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mp_hal_get_mac(MP_HAL_MAC_BDADDR, addr_be);
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reverse_addr_byte_order(addr.val, addr_be);
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// ble_hs_id_set_pub(addr.val);
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rc = ble_hs_id_set_rnd(addr.val);
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assert(rc == 0);
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#endif
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rc = ble_hs_util_ensure_addr(0); // prefer public address
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assert(rc == 0);
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}
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if (MP_BLUETOOTH_DEFAULT_ATTR_LEN > 20) {
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rc = ble_att_set_preferred_mtu(MP_BLUETOOTH_DEFAULT_ATTR_LEN + 3);
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assert(rc == 0);
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}
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ble_svc_gap_device_name_set(MICROPY_PY_BLUETOOTH_DEFAULT_GAP_NAME);
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mp_bluetooth_nimble_ble_state = MP_BLUETOOTH_NIMBLE_BLE_STATE_ACTIVE;
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}
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STATIC void gatts_register_cb(struct ble_gatt_register_ctxt *ctxt, void *arg) {
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if (!mp_bluetooth_is_active()) {
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return;
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}
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switch (ctxt->op) {
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case BLE_GATT_REGISTER_OP_SVC:
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// Called when a service is successfully registered.
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DEBUG_EVENT_printf("gatts_register_cb: svc uuid=%p handle=%d\n", &ctxt->svc.svc_def->uuid, ctxt->svc.handle);
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break;
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case BLE_GATT_REGISTER_OP_CHR:
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// Called when a characteristic is successfully registered.
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DEBUG_EVENT_printf("gatts_register_cb: chr uuid=%p def_handle=%d val_handle=%d\n", &ctxt->chr.chr_def->uuid, ctxt->chr.def_handle, ctxt->chr.val_handle);
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// Note: We will get this event for the default GAP Service, meaning that we allocate storage for the
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// "device name" and "appearance" characteristics, even though we never see the reads for them.
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// TODO: Possibly check if the service UUID is 0x1801 and ignore?
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// Allocate the gatts_db storage for this characteristic.
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// Although this function is a callback, it's called synchronously from ble_hs_sched_start/ble_gatts_start, so safe to allocate.
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mp_bluetooth_gatts_db_create_entry(MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db, ctxt->chr.val_handle, MP_BLUETOOTH_DEFAULT_ATTR_LEN);
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break;
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case BLE_GATT_REGISTER_OP_DSC:
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// Called when a descriptor is successfully registered.
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// Note: This is event is not called for the CCCD.
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DEBUG_EVENT_printf("gatts_register_cb: dsc uuid=%p handle=%d\n", &ctxt->dsc.dsc_def->uuid, ctxt->dsc.handle);
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// See above, safe to alloc.
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mp_bluetooth_gatts_db_create_entry(MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db, ctxt->dsc.handle, MP_BLUETOOTH_DEFAULT_ATTR_LEN);
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// Unlike characteristics, we have to manually provide a way to get the handle back to the register method.
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*((uint16_t *)ctxt->dsc.dsc_def->arg) = ctxt->dsc.handle;
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break;
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default:
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DEBUG_EVENT_printf("gatts_register_cb: unknown op %d\n", ctxt->op);
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break;
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}
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}
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STATIC int gap_event_cb(struct ble_gap_event *event, void *arg) {
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DEBUG_EVENT_printf("gap_event_cb: type=%d\n", event->type);
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if (!mp_bluetooth_is_active()) {
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return 0;
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}
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struct ble_gap_conn_desc desc;
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uint8_t addr[6] = {0};
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switch (event->type) {
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case BLE_GAP_EVENT_CONNECT:
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if (event->connect.status == 0) {
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// Connection established.
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ble_gap_conn_find(event->connect.conn_handle, &desc);
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reverse_addr_byte_order(addr, desc.peer_id_addr.val);
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mp_bluetooth_gap_on_connected_disconnected(MP_BLUETOOTH_IRQ_CENTRAL_CONNECT, event->connect.conn_handle, desc.peer_id_addr.type, addr);
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} else {
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// Connection failed.
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mp_bluetooth_gap_on_connected_disconnected(MP_BLUETOOTH_IRQ_CENTRAL_DISCONNECT, event->connect.conn_handle, 0xff, addr);
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}
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break;
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case BLE_GAP_EVENT_DISCONNECT:
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// Disconnect.
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reverse_addr_byte_order(addr, event->disconnect.conn.peer_id_addr.val);
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mp_bluetooth_gap_on_connected_disconnected(MP_BLUETOOTH_IRQ_CENTRAL_DISCONNECT, event->disconnect.conn.conn_handle, event->disconnect.conn.peer_id_addr.type, addr);
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break;
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}
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return 0;
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}
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int mp_bluetooth_init(void) {
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DEBUG_EVENT_printf("mp_bluetooth_init\n");
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// Clean up if necessary.
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mp_bluetooth_deinit();
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ble_hs_cfg.reset_cb = reset_cb;
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ble_hs_cfg.sync_cb = sync_cb;
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ble_hs_cfg.gatts_register_cb = gatts_register_cb;
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ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
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MP_STATE_PORT(bluetooth_nimble_root_pointers) = m_new0(mp_bluetooth_nimble_root_pointers_t, 1);
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mp_bluetooth_gatts_db_create(&MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db);
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mp_bluetooth_nimble_ble_state = MP_BLUETOOTH_NIMBLE_BLE_STATE_STARTING;
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mp_bluetooth_nimble_port_preinit();
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nimble_port_init();
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mp_bluetooth_nimble_port_postinit();
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// By default, just register the default gap service.
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ble_svc_gap_init();
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mp_bluetooth_nimble_port_start();
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// Wait for sync callback
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while (mp_bluetooth_nimble_ble_state != MP_BLUETOOTH_NIMBLE_BLE_STATE_ACTIVE) {
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MICROPY_EVENT_POLL_HOOK
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}
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DEBUG_EVENT_printf("mp_bluetooth_init: ready\n");
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return 0;
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}
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// Called when the host stop procedure has completed.
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STATIC void ble_hs_shutdown_stop_cb(int status, void *arg) {
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mp_bluetooth_nimble_ble_state = MP_BLUETOOTH_NIMBLE_BLE_STATE_OFF;
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}
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STATIC struct ble_hs_stop_listener ble_hs_shutdown_stop_listener;
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void mp_bluetooth_deinit(void) {
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DEBUG_EVENT_printf("mp_bluetooth_deinit\n");
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if (mp_bluetooth_nimble_ble_state == MP_BLUETOOTH_NIMBLE_BLE_STATE_OFF) {
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return;
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}
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mp_bluetooth_gap_advertise_stop();
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#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
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mp_bluetooth_gap_scan_stop();
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#endif
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mp_bluetooth_nimble_ble_state = MP_BLUETOOTH_NIMBLE_BLE_STATE_STOPPING;
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ble_hs_stop(&ble_hs_shutdown_stop_listener, ble_hs_shutdown_stop_cb, NULL);
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while (mp_bluetooth_nimble_ble_state != MP_BLUETOOTH_NIMBLE_BLE_STATE_OFF) {
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MICROPY_EVENT_POLL_HOOK
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}
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mp_bluetooth_nimble_port_deinit();
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MP_STATE_PORT(bluetooth_nimble_root_pointers) = NULL;
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DEBUG_EVENT_printf("mp_bluetooth_deinit: shut down\n");
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}
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bool mp_bluetooth_is_active(void) {
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return mp_bluetooth_nimble_ble_state == MP_BLUETOOTH_NIMBLE_BLE_STATE_ACTIVE;
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}
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void mp_bluetooth_get_device_addr(uint8_t *addr) {
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#if MICROPY_PY_BLUETOOTH_RANDOM_ADDR
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uint8_t addr_le[6];
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int rc = ble_hs_id_copy_addr(BLE_ADDR_RANDOM, addr_le, NULL);
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if (rc != 0) {
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// Even with MICROPY_PY_BLUETOOTH_RANDOM_ADDR enabled the public address may
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// be used instead, in which case there is no random address.
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ble_hs_id_copy_addr(BLE_ADDR_PUBLIC, addr_le, NULL);
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}
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reverse_addr_byte_order(addr, addr_le);
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#else
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mp_hal_get_mac(MP_HAL_MAC_BDADDR, addr);
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#endif
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}
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size_t mp_bluetooth_gap_get_device_name(const uint8_t **buf) {
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const char *name = ble_svc_gap_device_name();
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*buf = (const uint8_t *)name;
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return strlen(name);
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}
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int mp_bluetooth_gap_set_device_name(const uint8_t *buf, size_t len) {
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char tmp_buf[MYNEWT_VAL(BLE_SVC_GAP_DEVICE_NAME_MAX_LENGTH) + 1];
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if (len + 1 > sizeof(tmp_buf)) {
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return MP_EINVAL;
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}
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memcpy(tmp_buf, buf, len);
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tmp_buf[len] = '\0';
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return ble_hs_err_to_errno(ble_svc_gap_device_name_set(tmp_buf));
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}
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int mp_bluetooth_gap_advertise_start(bool connectable, int32_t interval_us, const uint8_t *adv_data, size_t adv_data_len, const uint8_t *sr_data, size_t sr_data_len) {
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if (!mp_bluetooth_is_active()) {
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return ERRNO_BLUETOOTH_NOT_ACTIVE;
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}
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mp_bluetooth_gap_advertise_stop();
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int ret;
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if (adv_data) {
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ret = ble_gap_adv_set_data(adv_data, adv_data_len);
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if (ret != 0) {
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return ble_hs_err_to_errno(ret);
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}
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}
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if (sr_data) {
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ret = ble_gap_adv_rsp_set_data(sr_data, sr_data_len);
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if (ret != 0) {
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return ble_hs_err_to_errno(ret);
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}
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}
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struct ble_gap_adv_params adv_params = {
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.conn_mode = connectable ? BLE_GAP_CONN_MODE_UND : BLE_GAP_CONN_MODE_NON,
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.disc_mode = BLE_GAP_DISC_MODE_GEN,
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.itvl_min = interval_us / BLE_HCI_ADV_ITVL, // convert to 625us units.
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.itvl_max = interval_us / BLE_HCI_ADV_ITVL,
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.channel_map = 7, // all 3 channels.
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};
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ret = ble_gap_adv_start(BLE_OWN_ADDR_PUBLIC, NULL, BLE_HS_FOREVER, &adv_params, gap_event_cb, NULL);
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if (ret == 0) {
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return 0;
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}
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ret = ble_gap_adv_start(BLE_OWN_ADDR_RPA_PUBLIC_DEFAULT, NULL, BLE_HS_FOREVER, &adv_params, gap_event_cb, NULL);
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if (ret == 0) {
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return 0;
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}
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ret = ble_gap_adv_start(BLE_OWN_ADDR_RPA_RANDOM_DEFAULT, NULL, BLE_HS_FOREVER, &adv_params, gap_event_cb, NULL);
|
|
if (ret == 0) {
|
|
return 0;
|
|
}
|
|
ret = ble_gap_adv_start(BLE_OWN_ADDR_RANDOM, NULL, BLE_HS_FOREVER, &adv_params, gap_event_cb, NULL);
|
|
if (ret == 0) {
|
|
return 0;
|
|
}
|
|
DEBUG_EVENT_printf("ble_gap_adv_start: %d\n", ret);
|
|
|
|
return ble_hs_err_to_errno(ret);
|
|
}
|
|
|
|
void mp_bluetooth_gap_advertise_stop(void) {
|
|
if (ble_gap_adv_active()) {
|
|
ble_gap_adv_stop();
|
|
}
|
|
}
|
|
|
|
static int characteristic_access_cb(uint16_t conn_handle, uint16_t value_handle, struct ble_gatt_access_ctxt *ctxt, void *arg) {
|
|
DEBUG_EVENT_printf("characteristic_access_cb: conn_handle=%u value_handle=%u op=%u\n", conn_handle, value_handle, ctxt->op);
|
|
if (!mp_bluetooth_is_active()) {
|
|
return 0;
|
|
}
|
|
mp_bluetooth_gatts_db_entry_t *entry;
|
|
switch (ctxt->op) {
|
|
case BLE_GATT_ACCESS_OP_READ_CHR:
|
|
case BLE_GATT_ACCESS_OP_READ_DSC:
|
|
#if MICROPY_PY_BLUETOOTH_GATTS_ON_READ_CALLBACK
|
|
// Allow Python code to override (by using gatts_write), or deny (by returning false) the read.
|
|
if (!mp_bluetooth_gatts_on_read_request(conn_handle, value_handle)) {
|
|
return BLE_ATT_ERR_READ_NOT_PERMITTED;
|
|
}
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
|
|
os_mbuf_append(ctxt->om, entry->data, entry->data_len);
|
|
|
|
return 0;
|
|
case BLE_GATT_ACCESS_OP_WRITE_CHR:
|
|
case BLE_GATT_ACCESS_OP_WRITE_DSC:
|
|
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;
|
|
}
|
|
|
|
size_t offset = 0;
|
|
if (entry->append) {
|
|
offset = entry->data_len;
|
|
}
|
|
entry->data_len = MIN(entry->data_alloc, OS_MBUF_PKTLEN(ctxt->om) + offset);
|
|
os_mbuf_copydata(ctxt->om, 0, entry->data_len - offset, entry->data + offset);
|
|
|
|
mp_bluetooth_gatts_on_write(conn_handle, value_handle);
|
|
|
|
return 0;
|
|
}
|
|
return BLE_ATT_ERR_UNLIKELY;
|
|
}
|
|
|
|
int mp_bluetooth_gatts_register_service_begin(bool append) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
int ret = ble_gatts_reset();
|
|
if (ret != 0) {
|
|
return ble_hs_err_to_errno(ret);
|
|
}
|
|
|
|
// Reset the gatt characteristic value db.
|
|
mp_bluetooth_gatts_db_reset(MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db);
|
|
|
|
// By default, just register the default gap service.
|
|
ble_svc_gap_init();
|
|
|
|
if (!append) {
|
|
// Unref any previous service definitions.
|
|
for (int i = 0; i < MP_STATE_PORT(bluetooth_nimble_root_pointers)->n_services; ++i) {
|
|
MP_STATE_PORT(bluetooth_nimble_root_pointers)->services[i] = NULL;
|
|
}
|
|
MP_STATE_PORT(bluetooth_nimble_root_pointers)->n_services = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mp_bluetooth_gatts_register_service_end() {
|
|
int ret = ble_gatts_start();
|
|
if (ret != 0) {
|
|
return ble_hs_err_to_errno(ret);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mp_bluetooth_gatts_register_service(mp_obj_bluetooth_uuid_t *service_uuid, mp_obj_bluetooth_uuid_t **characteristic_uuids, uint8_t *characteristic_flags, mp_obj_bluetooth_uuid_t **descriptor_uuids, uint8_t *descriptor_flags, uint8_t *num_descriptors, uint16_t *handles, size_t num_characteristics) {
|
|
if (MP_STATE_PORT(bluetooth_nimble_root_pointers)->n_services == MP_BLUETOOTH_NIMBLE_MAX_SERVICES) {
|
|
return MP_E2BIG;
|
|
}
|
|
size_t handle_index = 0;
|
|
size_t descriptor_index = 0;
|
|
|
|
struct ble_gatt_chr_def *characteristics = m_new(struct ble_gatt_chr_def, num_characteristics + 1);
|
|
for (size_t i = 0; i < num_characteristics; ++i) {
|
|
characteristics[i].uuid = create_nimble_uuid(characteristic_uuids[i]);
|
|
characteristics[i].access_cb = characteristic_access_cb;
|
|
characteristics[i].arg = NULL;
|
|
characteristics[i].flags = characteristic_flags[i];
|
|
characteristics[i].min_key_size = 0;
|
|
characteristics[i].val_handle = &handles[handle_index];
|
|
++handle_index;
|
|
|
|
if (num_descriptors[i] == 0) {
|
|
characteristics[i].descriptors = NULL;
|
|
} else {
|
|
struct ble_gatt_dsc_def *descriptors = m_new(struct ble_gatt_dsc_def, num_descriptors[i] + 1);
|
|
|
|
for (size_t j = 0; j < num_descriptors[i]; ++j) {
|
|
descriptors[j].uuid = create_nimble_uuid(descriptor_uuids[descriptor_index]);
|
|
descriptors[j].access_cb = characteristic_access_cb;
|
|
descriptors[j].att_flags = descriptor_flags[descriptor_index];
|
|
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];
|
|
++descriptor_index;
|
|
++handle_index;
|
|
}
|
|
descriptors[num_descriptors[i]].uuid = NULL; // no more descriptors
|
|
|
|
characteristics[i].descriptors = descriptors;
|
|
}
|
|
}
|
|
characteristics[num_characteristics].uuid = NULL; // no more characteristics
|
|
|
|
struct ble_gatt_svc_def *service = m_new(struct ble_gatt_svc_def, 2);
|
|
service[0].type = BLE_GATT_SVC_TYPE_PRIMARY;
|
|
service[0].uuid = create_nimble_uuid(service_uuid);
|
|
service[0].includes = NULL;
|
|
service[0].characteristics = characteristics;
|
|
service[1].type = 0; // no more services
|
|
|
|
MP_STATE_PORT(bluetooth_nimble_root_pointers)->services[MP_STATE_PORT(bluetooth_nimble_root_pointers)->n_services++] = service;
|
|
|
|
// Note: advertising must be stopped for gatts registration to work
|
|
|
|
int ret = ble_gatts_count_cfg(service);
|
|
if (ret != 0) {
|
|
return ble_hs_err_to_errno(ret);
|
|
}
|
|
|
|
ret = ble_gatts_add_svcs(service);
|
|
if (ret != 0) {
|
|
return ble_hs_err_to_errno(ret);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mp_bluetooth_gap_disconnect(uint16_t conn_handle) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
return ble_hs_err_to_errno(ble_gap_terminate(conn_handle, BLE_ERR_REM_USER_CONN_TERM));
|
|
}
|
|
|
|
int mp_bluetooth_gatts_read(uint16_t value_handle, uint8_t **value, size_t *value_len) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
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) {
|
|
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);
|
|
}
|
|
|
|
// TODO: Could use ble_gatts_chr_updated to send to all subscribed centrals.
|
|
|
|
int mp_bluetooth_gatts_notify(uint16_t conn_handle, uint16_t value_handle) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
// Confusingly, notify/notify_custom/indicate are "gattc" function (even though they're used by peripherals (i.e. gatt servers)).
|
|
// See https://www.mail-archive.com/dev@mynewt.apache.org/msg01293.html
|
|
return ble_hs_err_to_errno(ble_gattc_notify(conn_handle, value_handle));
|
|
}
|
|
|
|
int mp_bluetooth_gatts_notify_send(uint16_t conn_handle, uint16_t value_handle, const uint8_t *value, size_t *value_len) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
struct os_mbuf *om = ble_hs_mbuf_from_flat(value, *value_len);
|
|
if (om == NULL) {
|
|
return -1;
|
|
}
|
|
// TODO: check that notify_custom takes ownership of om, if not os_mbuf_free_chain(om).
|
|
return ble_hs_err_to_errno(ble_gattc_notify_custom(conn_handle, value_handle, om));
|
|
}
|
|
|
|
int mp_bluetooth_gatts_indicate(uint16_t conn_handle, uint16_t value_handle) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
return ble_hs_err_to_errno(ble_gattc_indicate(conn_handle, value_handle));
|
|
}
|
|
|
|
int mp_bluetooth_gatts_set_buffer(uint16_t value_handle, size_t len, bool append) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
return mp_bluetooth_gatts_db_resize(MP_STATE_PORT(bluetooth_nimble_root_pointers)->gatts_db, value_handle, len, append);
|
|
}
|
|
|
|
#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
|
|
|
|
STATIC void gattc_on_data_available(uint16_t event, uint16_t conn_handle, uint16_t value_handle, const struct os_mbuf *om) {
|
|
size_t len = OS_MBUF_PKTLEN(om);
|
|
mp_uint_t atomic_state;
|
|
len = mp_bluetooth_gattc_on_data_available_start(event, conn_handle, value_handle, len, &atomic_state);
|
|
while (len > 0 && om != NULL) {
|
|
size_t n = MIN(om->om_len, len);
|
|
mp_bluetooth_gattc_on_data_available_chunk(OS_MBUF_DATA(om, const uint8_t *), n);
|
|
len -= n;
|
|
om = SLIST_NEXT(om, om_next);
|
|
}
|
|
mp_bluetooth_gattc_on_data_available_end(atomic_state);
|
|
}
|
|
|
|
STATIC int gap_scan_cb(struct ble_gap_event *event, void *arg) {
|
|
DEBUG_EVENT_printf("gap_scan_cb: event=%d type=%d\n", event->type, event->type == BLE_GAP_EVENT_DISC ? event->disc.event_type : -1);
|
|
if (!mp_bluetooth_is_active()) {
|
|
return 0;
|
|
}
|
|
|
|
if (event->type == BLE_GAP_EVENT_DISC_COMPLETE) {
|
|
mp_bluetooth_gap_on_scan_complete();
|
|
return 0;
|
|
}
|
|
|
|
if (event->type != BLE_GAP_EVENT_DISC) {
|
|
return 0;
|
|
}
|
|
|
|
uint8_t addr[6];
|
|
reverse_addr_byte_order(addr, event->disc.addr.val);
|
|
mp_bluetooth_gap_on_scan_result(event->disc.addr.type, addr, event->disc.event_type, event->disc.rssi, event->disc.data, event->disc.length_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mp_bluetooth_gap_scan_start(int32_t duration_ms, int32_t interval_us, int32_t window_us) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
if (duration_ms == 0) {
|
|
duration_ms = BLE_HS_FOREVER;
|
|
}
|
|
struct ble_gap_disc_params discover_params = {
|
|
.itvl = MAX(BLE_HCI_SCAN_ITVL_MIN, MIN(BLE_HCI_SCAN_ITVL_MAX, interval_us / BLE_HCI_SCAN_ITVL)),
|
|
.window = MAX(BLE_HCI_SCAN_WINDOW_MIN, MIN(BLE_HCI_SCAN_WINDOW_MAX, window_us / BLE_HCI_SCAN_ITVL)),
|
|
.filter_policy = BLE_HCI_CONN_FILT_NO_WL,
|
|
.limited = 0,
|
|
.passive = 1, // TODO: Handle BLE_HCI_ADV_RPT_EVTYPE_SCAN_RSP in gap_scan_cb above.
|
|
.filter_duplicates = 0,
|
|
};
|
|
int err = ble_gap_disc(BLE_OWN_ADDR_PUBLIC, duration_ms, &discover_params, gap_scan_cb, NULL);
|
|
return ble_hs_err_to_errno(err);
|
|
}
|
|
|
|
int mp_bluetooth_gap_scan_stop(void) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
if (!ble_gap_disc_active()) {
|
|
return 0;
|
|
}
|
|
int err = ble_gap_disc_cancel();
|
|
if (err == 0) {
|
|
mp_bluetooth_gap_on_scan_complete();
|
|
return 0;
|
|
}
|
|
return ble_hs_err_to_errno(err);
|
|
}
|
|
|
|
// Central role: GAP events for a connected peripheral.
|
|
STATIC int peripheral_gap_event_cb(struct ble_gap_event *event, void *arg) {
|
|
DEBUG_EVENT_printf("peripheral_gap_event_cb: event=%d\n", event->type);
|
|
if (!mp_bluetooth_is_active()) {
|
|
return 0;
|
|
}
|
|
struct ble_gap_conn_desc desc;
|
|
uint8_t addr[6] = {0};
|
|
|
|
switch (event->type) {
|
|
case BLE_GAP_EVENT_CONNECT:
|
|
if (event->connect.status == 0) {
|
|
// Connection established.
|
|
ble_gap_conn_find(event->connect.conn_handle, &desc);
|
|
reverse_addr_byte_order(addr, desc.peer_id_addr.val);
|
|
mp_bluetooth_gap_on_connected_disconnected(MP_BLUETOOTH_IRQ_PERIPHERAL_CONNECT, event->connect.conn_handle, desc.peer_id_addr.type, addr);
|
|
} else {
|
|
// Connection failed.
|
|
mp_bluetooth_gap_on_connected_disconnected(MP_BLUETOOTH_IRQ_PERIPHERAL_DISCONNECT, event->connect.conn_handle, 0xff, addr);
|
|
}
|
|
break;
|
|
|
|
case BLE_GAP_EVENT_DISCONNECT:
|
|
// Disconnect.
|
|
reverse_addr_byte_order(addr, event->disconnect.conn.peer_id_addr.val);
|
|
mp_bluetooth_gap_on_connected_disconnected(MP_BLUETOOTH_IRQ_PERIPHERAL_DISCONNECT, event->disconnect.conn.conn_handle, event->disconnect.conn.peer_id_addr.type, addr);
|
|
|
|
break;
|
|
|
|
case BLE_GAP_EVENT_NOTIFY_RX: {
|
|
uint16_t ev = event->notify_rx.indication == 0 ? MP_BLUETOOTH_IRQ_GATTC_NOTIFY : MP_BLUETOOTH_IRQ_GATTC_INDICATE;
|
|
gattc_on_data_available(ev, event->notify_rx.conn_handle, event->notify_rx.attr_handle, event->notify_rx.om);
|
|
break;
|
|
}
|
|
|
|
case BLE_GAP_EVENT_CONN_UPDATE:
|
|
// TODO
|
|
break;
|
|
|
|
case BLE_GAP_EVENT_CONN_UPDATE_REQ:
|
|
// TODO
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int mp_bluetooth_gap_peripheral_connect(uint8_t addr_type, const uint8_t *addr, int32_t duration_ms) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
if (ble_gap_disc_active()) {
|
|
mp_bluetooth_gap_scan_stop();
|
|
}
|
|
|
|
// TODO: This is the same as ble_gap_conn_params_dflt (i.e. passing NULL).
|
|
STATIC const struct ble_gap_conn_params params = {
|
|
.scan_itvl = 0x0010,
|
|
.scan_window = 0x0010,
|
|
.itvl_min = BLE_GAP_INITIAL_CONN_ITVL_MIN,
|
|
.itvl_max = BLE_GAP_INITIAL_CONN_ITVL_MAX,
|
|
.latency = BLE_GAP_INITIAL_CONN_LATENCY,
|
|
.supervision_timeout = BLE_GAP_INITIAL_SUPERVISION_TIMEOUT,
|
|
.min_ce_len = BLE_GAP_INITIAL_CONN_MIN_CE_LEN,
|
|
.max_ce_len = BLE_GAP_INITIAL_CONN_MAX_CE_LEN,
|
|
};
|
|
|
|
ble_addr_t addr_nimble = create_nimble_addr(addr_type, addr);
|
|
int err = ble_gap_connect(BLE_OWN_ADDR_PUBLIC, &addr_nimble, duration_ms, ¶ms, &peripheral_gap_event_cb, NULL);
|
|
return ble_hs_err_to_errno(err);
|
|
}
|
|
|
|
STATIC int peripheral_discover_service_cb(uint16_t conn_handle, const struct ble_gatt_error *error, const struct ble_gatt_svc *service, void *arg) {
|
|
DEBUG_EVENT_printf("peripheral_discover_service_cb: conn_handle=%d status=%d start_handle=%d\n", conn_handle, error->status, service ? service->start_handle : -1);
|
|
if (!mp_bluetooth_is_active()) {
|
|
return 0;
|
|
}
|
|
if (error->status == 0) {
|
|
mp_obj_bluetooth_uuid_t service_uuid = create_mp_uuid(&service->uuid);
|
|
mp_bluetooth_gattc_on_primary_service_result(conn_handle, service->start_handle, service->end_handle, &service_uuid);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int mp_bluetooth_gattc_discover_primary_services(uint16_t conn_handle) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
int err = ble_gattc_disc_all_svcs(conn_handle, &peripheral_discover_service_cb, NULL);
|
|
return ble_hs_err_to_errno(err);
|
|
}
|
|
|
|
STATIC int ble_gatt_characteristic_cb(uint16_t conn_handle, const struct ble_gatt_error *error, const struct ble_gatt_chr *characteristic, void *arg) {
|
|
DEBUG_EVENT_printf("ble_gatt_characteristic_cb: conn_handle=%d status=%d def_handle=%d val_handle=%d\n", conn_handle, error->status, characteristic ? characteristic->def_handle : -1, characteristic ? characteristic->val_handle : -1);
|
|
if (!mp_bluetooth_is_active()) {
|
|
return 0;
|
|
}
|
|
if (error->status == 0) {
|
|
mp_obj_bluetooth_uuid_t characteristic_uuid = create_mp_uuid(&characteristic->uuid);
|
|
mp_bluetooth_gattc_on_characteristic_result(conn_handle, characteristic->def_handle, characteristic->val_handle, characteristic->properties, &characteristic_uuid);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int mp_bluetooth_gattc_discover_characteristics(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
int err = ble_gattc_disc_all_chrs(conn_handle, start_handle, end_handle, &ble_gatt_characteristic_cb, NULL);
|
|
return ble_hs_err_to_errno(err);
|
|
}
|
|
|
|
STATIC int ble_gatt_descriptor_cb(uint16_t conn_handle, const struct ble_gatt_error *error, uint16_t characteristic_val_handle, const struct ble_gatt_dsc *descriptor, void *arg) {
|
|
DEBUG_EVENT_printf("ble_gatt_descriptor_cb: conn_handle=%d status=%d chr_handle=%d dsc_handle=%d\n", conn_handle, error->status, characteristic_val_handle, descriptor ? descriptor->handle : -1);
|
|
if (!mp_bluetooth_is_active()) {
|
|
return 0;
|
|
}
|
|
if (error->status == 0) {
|
|
mp_obj_bluetooth_uuid_t descriptor_uuid = create_mp_uuid(&descriptor->uuid);
|
|
mp_bluetooth_gattc_on_descriptor_result(conn_handle, descriptor->handle, &descriptor_uuid);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int mp_bluetooth_gattc_discover_descriptors(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
int err = ble_gattc_disc_all_dscs(conn_handle, start_handle, end_handle, &ble_gatt_descriptor_cb, NULL);
|
|
return ble_hs_err_to_errno(err);
|
|
}
|
|
|
|
STATIC int ble_gatt_attr_read_cb(uint16_t conn_handle, const struct ble_gatt_error *error, struct ble_gatt_attr *attr, void *arg) {
|
|
DEBUG_EVENT_printf("ble_gatt_attr_read_cb: conn_handle=%d status=%d handle=%d\n", conn_handle, error->status, attr ? attr->handle : -1);
|
|
if (!mp_bluetooth_is_active()) {
|
|
return 0;
|
|
}
|
|
// TODO: Maybe send NULL if error->status non-zero.
|
|
if (error->status == 0) {
|
|
gattc_on_data_available(MP_BLUETOOTH_IRQ_GATTC_READ_RESULT, conn_handle, attr->handle, attr->om);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Initiate read of a value from the remote peripheral.
|
|
int mp_bluetooth_gattc_read(uint16_t conn_handle, uint16_t value_handle) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
int err = ble_gattc_read(conn_handle, value_handle, &ble_gatt_attr_read_cb, NULL);
|
|
return ble_hs_err_to_errno(err);
|
|
}
|
|
|
|
STATIC int ble_gatt_attr_write_cb(uint16_t conn_handle, const struct ble_gatt_error *error, struct ble_gatt_attr *attr, void *arg) {
|
|
DEBUG_EVENT_printf("ble_gatt_attr_write_cb: conn_handle=%d status=%d handle=%d\n", conn_handle, error->status, attr ? attr->handle : -1);
|
|
if (!mp_bluetooth_is_active()) {
|
|
return 0;
|
|
}
|
|
mp_bluetooth_gattc_on_write_status(conn_handle, attr->handle, error->status);
|
|
return 0;
|
|
}
|
|
|
|
// Write the value to the remote peripheral.
|
|
int mp_bluetooth_gattc_write(uint16_t conn_handle, uint16_t value_handle, const uint8_t *value, size_t *value_len, unsigned int mode) {
|
|
if (!mp_bluetooth_is_active()) {
|
|
return ERRNO_BLUETOOTH_NOT_ACTIVE;
|
|
}
|
|
int err;
|
|
if (mode == MP_BLUETOOTH_WRITE_MODE_NO_RESPONSE) {
|
|
err = ble_gattc_write_no_rsp_flat(conn_handle, value_handle, value, *value_len);
|
|
} else if (mode == MP_BLUETOOTH_WRITE_MODE_WITH_RESPONSE) {
|
|
err = ble_gattc_write_flat(conn_handle, value_handle, value, *value_len, &ble_gatt_attr_write_cb, NULL);
|
|
} else {
|
|
err = BLE_HS_EINVAL;
|
|
}
|
|
return ble_hs_err_to_errno(err);
|
|
}
|
|
|
|
#endif // MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
|
|
|
|
#endif // MICROPY_PY_BLUETOOTH && MICROPY_BLUETOOTH_NIMBLE
|