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extmod/modbluetooth: Allow discovery of svc/char by uuid. 

In most situations this is a more efficient way of going straight to the
service and characteristic you need.
v1.13-wasp-os
Jim Mussared 2020-05-12 23:55:49 +10:00 committed by Damien George
parent 6a3c89d584
commit 919d640aec
5 changed files with 81 additions and 25 deletions
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38
extmod/btstack/modbluetooth_btstack.c
View File

@ -677,12 +677,27 @@ int mp_bluetooth_gap_peripheral_connect(uint8_t addr_type, const uint8_t *addr,
return btstack_error_to_errno(gap_connect(btstack_addr, addr_type));
}
int mp_bluetooth_gattc_discover_primary_services(uint16_t conn_handle) {
int mp_bluetooth_gattc_discover_primary_services(uint16_t conn_handle, const mp_obj_bluetooth_uuid_t *uuid) {
DEBUG_EVENT_printf("mp_bluetooth_gattc_discover_primary_services\n");
return btstack_error_to_errno(gatt_client_discover_primary_services(&btstack_packet_handler_discover_services, conn_handle));
uint8_t err;
if (uuid) {
if (uuid->type == MP_BLUETOOTH_UUID_TYPE_16) {
err = gatt_client_discover_primary_services_by_uuid16(&btstack_packet_handler_discover_services, conn_handle, get_uuid16(uuid));
} else if (uuid->type == MP_BLUETOOTH_UUID_TYPE_128) {
uint8_t buffer[16];
reverse_128(uuid->data, buffer);
err = gatt_client_discover_primary_services_by_uuid128(&btstack_packet_handler_discover_services, conn_handle, buffer);
} else {
DEBUG_EVENT_printf(" --> unknown UUID size\n");
return MP_EINVAL;
}
} else {
err = gatt_client_discover_primary_services(&btstack_packet_handler_discover_services, conn_handle);
}
return btstack_error_to_errno(err);
}
int mp_bluetooth_gattc_discover_characteristics(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle) {
int mp_bluetooth_gattc_discover_characteristics(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle, const mp_obj_bluetooth_uuid_t *uuid) {
DEBUG_EVENT_printf("mp_bluetooth_gattc_discover_characteristics\n");
gatt_client_service_t service = {
// Only start/end handles needed for gatt_client_discover_characteristics_for_service.
@ -691,7 +706,22 @@ int mp_bluetooth_gattc_discover_characteristics(uint16_t conn_handle, uint16_t s
.uuid16 = 0,
.uuid128 = {0},
};
return btstack_error_to_errno(gatt_client_discover_characteristics_for_service(&btstack_packet_handler_discover_characteristics, conn_handle, &service));
uint8_t err;
if (uuid) {
if (uuid->type == MP_BLUETOOTH_UUID_TYPE_16) {
err = gatt_client_discover_characteristics_for_service_by_uuid16(&btstack_packet_handler_discover_characteristics, conn_handle, &service, get_uuid16(uuid));
} else if (uuid->type == MP_BLUETOOTH_UUID_TYPE_128) {
uint8_t buffer[16];
reverse_128(uuid->data, buffer);
err = gatt_client_discover_characteristics_for_service_by_uuid128(&btstack_packet_handler_discover_characteristics, conn_handle, &service, buffer);
} else {
DEBUG_EVENT_printf(" --> unknown UUID size\n");
return MP_EINVAL;
}
} else {
err = gatt_client_discover_characteristics_for_service(&btstack_packet_handler_discover_characteristics, conn_handle, &service);
}
return btstack_error_to_errno(err);
}
int mp_bluetooth_gattc_discover_descriptors(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle) {

22
extmod/modbluetooth.c
View File

@ -688,21 +688,27 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(bluetooth_ble_gatts_set_buffer_obj, 3
#if MICROPY_PY_BLUETOOTH_ENABLE_CENTRAL_MODE
STATIC mp_obj_t bluetooth_ble_gattc_discover_services(mp_obj_t self_in, mp_obj_t conn_handle_in) {
(void)self_in;
mp_int_t conn_handle = mp_obj_get_int(conn_handle_in);
return bluetooth_handle_errno(mp_bluetooth_gattc_discover_primary_services(conn_handle));
STATIC mp_obj_t bluetooth_ble_gattc_discover_services(size_t n_args, const mp_obj_t *args) {
mp_int_t conn_handle = mp_obj_get_int(args[1]);
mp_obj_bluetooth_uuid_t *uuid = NULL;
if (n_args == 3) {
uuid = MP_OBJ_TO_PTR(args[2]);
}
return bluetooth_handle_errno(mp_bluetooth_gattc_discover_primary_services(conn_handle, uuid));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(bluetooth_ble_gattc_discover_services_obj, bluetooth_ble_gattc_discover_services);
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(bluetooth_ble_gattc_discover_services_obj, 2, 3, bluetooth_ble_gattc_discover_services);
STATIC mp_obj_t bluetooth_ble_gattc_discover_characteristics(size_t n_args, const mp_obj_t *args) {
(void)n_args;
mp_int_t conn_handle = mp_obj_get_int(args[1]);
mp_int_t start_handle = mp_obj_get_int(args[2]);
mp_int_t end_handle = mp_obj_get_int(args[3]);
return bluetooth_handle_errno(mp_bluetooth_gattc_discover_characteristics(conn_handle, start_handle, end_handle));
mp_obj_bluetooth_uuid_t *uuid = NULL;
if (n_args == 3) {
uuid = MP_OBJ_TO_PTR(args[4]);
}
return bluetooth_handle_errno(mp_bluetooth_gattc_discover_characteristics(conn_handle, start_handle, end_handle, uuid));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(bluetooth_ble_gattc_discover_characteristics_obj, 4, 4, bluetooth_ble_gattc_discover_characteristics);
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(bluetooth_ble_gattc_discover_characteristics_obj, 4, 5, bluetooth_ble_gattc_discover_characteristics);
STATIC mp_obj_t bluetooth_ble_gattc_discover_descriptors(size_t n_args, const mp_obj_t *args) {
(void)n_args;

4
extmod/modbluetooth.h
View File

@ -221,10 +221,10 @@ int mp_bluetooth_gap_scan_stop(void);
int mp_bluetooth_gap_peripheral_connect(uint8_t addr_type, const uint8_t *addr, int32_t duration_ms);
// Find all primary services on the connected peripheral.
int mp_bluetooth_gattc_discover_primary_services(uint16_t conn_handle);
int mp_bluetooth_gattc_discover_primary_services(uint16_t conn_handle, const mp_obj_bluetooth_uuid_t *uuid);
// Find all characteristics on the specified service on a connected peripheral.
int mp_bluetooth_gattc_discover_characteristics(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle);
int mp_bluetooth_gattc_discover_characteristics(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle, const mp_obj_bluetooth_uuid_t *uuid);
// Find all descriptors on the specified characteristic on a connected peripheral.
int mp_bluetooth_gattc_discover_descriptors(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle);

36
extmod/nimble/modbluetooth_nimble.c
View File

@ -74,19 +74,19 @@ STATIC int ble_hs_err_to_errno(int err) {
}
// Note: modbluetooth UUIDs store their data in LE.
STATIC ble_uuid_t *create_nimble_uuid(const mp_obj_bluetooth_uuid_t *uuid) {
STATIC ble_uuid_t *create_nimble_uuid(const mp_obj_bluetooth_uuid_t *uuid, ble_uuid_any_t *storage) {
if (uuid->type == MP_BLUETOOTH_UUID_TYPE_16) {
ble_uuid16_t *result = m_new(ble_uuid16_t, 1);
ble_uuid16_t *result = storage ? &storage->u16 : m_new(ble_uuid16_t, 1);
result->u.type = BLE_UUID_TYPE_16;
result->value = (uuid->data[1] << 8) | uuid->data[0];
return (ble_uuid_t *)result;
} else if (uuid->type == MP_BLUETOOTH_UUID_TYPE_32) {
ble_uuid32_t *result = m_new(ble_uuid32_t, 1);
ble_uuid32_t *result = storage ? &storage->u32 : m_new(ble_uuid32_t, 1);
result->u.type = BLE_UUID_TYPE_32;
result->value = (uuid->data[1] << 24) | (uuid->data[1] << 16) | (uuid->data[1] << 8) | uuid->data[0];
return (ble_uuid_t *)result;
} else if (uuid->type == MP_BLUETOOTH_UUID_TYPE_128) {
ble_uuid128_t *result = m_new(ble_uuid128_t, 1);
ble_uuid128_t *result = storage ? &storage->u128 : m_new(ble_uuid128_t, 1);
result->u.type = BLE_UUID_TYPE_128;
memcpy(result->value, uuid->data, 16);
return (ble_uuid_t *)result;
@ -498,7 +498,7 @@ int mp_bluetooth_gatts_register_service(mp_obj_bluetooth_uuid_t *service_uuid, m
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].uuid = create_nimble_uuid(characteristic_uuids[i], NULL);
characteristics[i].access_cb = characteristic_access_cb;
characteristics[i].arg = NULL;
characteristics[i].flags = characteristic_flags[i];
@ -512,7 +512,7 @@ int mp_bluetooth_gatts_register_service(mp_obj_bluetooth_uuid_t *service_uuid, m
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].uuid = create_nimble_uuid(descriptor_uuids[descriptor_index], NULL);
descriptors[j].access_cb = characteristic_access_cb;
descriptors[j].att_flags = descriptor_flags[descriptor_index];
descriptors[j].min_key_size = 0;
@ -530,7 +530,7 @@ int mp_bluetooth_gatts_register_service(mp_obj_bluetooth_uuid_t *service_uuid, m
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].uuid = create_nimble_uuid(service_uuid, NULL);
service[0].includes = NULL;
service[0].characteristics = characteristics;
service[1].type = 0; // no more services
@ -769,11 +769,18 @@ STATIC int peripheral_discover_service_cb(uint16_t conn_handle, const struct ble
return 0;
}
int mp_bluetooth_gattc_discover_primary_services(uint16_t conn_handle) {
int mp_bluetooth_gattc_discover_primary_services(uint16_t conn_handle, const mp_obj_bluetooth_uuid_t *uuid) {
if (!mp_bluetooth_is_active()) {
return ERRNO_BLUETOOTH_NOT_ACTIVE;
}
int err = ble_gattc_disc_all_svcs(conn_handle, &peripheral_discover_service_cb, NULL);
int err;
if (uuid) {
ble_uuid_any_t nimble_uuid;
create_nimble_uuid(uuid, &nimble_uuid);
err = ble_gattc_disc_svc_by_uuid(conn_handle, &nimble_uuid.u, &peripheral_discover_service_cb, NULL);
} else {
err = ble_gattc_disc_all_svcs(conn_handle, &peripheral_discover_service_cb, NULL);
}
return ble_hs_err_to_errno(err);
}
@ -791,11 +798,18 @@ STATIC int ble_gatt_characteristic_cb(uint16_t conn_handle, const struct ble_gat
return 0;
}
int mp_bluetooth_gattc_discover_characteristics(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle) {
int mp_bluetooth_gattc_discover_characteristics(uint16_t conn_handle, uint16_t start_handle, uint16_t end_handle, const mp_obj_bluetooth_uuid_t *uuid) {
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);
int err;
if (uuid) {
ble_uuid_any_t nimble_uuid;
create_nimble_uuid(uuid, &nimble_uuid);
err = ble_gattc_disc_chrs_by_uuid(conn_handle, start_handle, end_handle, &nimble_uuid.u, &ble_gatt_characteristic_cb, NULL);
} else {
err = ble_gattc_disc_all_chrs(conn_handle, start_handle, end_handle, &ble_gatt_characteristic_cb, NULL);
}
return ble_hs_err_to_errno(err);
}

6
extmod/nimble/nimble/npl_os.c
View File

@ -127,6 +127,12 @@ void *nimble_realloc(void *ptr, size_t size) {
return ptr2;
}
// No-op implementation (only used by NimBLE logging).
int nimble_sprintf(char *str, const char *fmt, ...) {
str[0] = 0;
return 0;
}
/******************************************************************************/
// EVENTQ