circuitpython/ports/nrf/modules/ubluepy/ubluepy_peripheral.c

499 lines
19 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Glenn Ruben Bakke
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
#include "py/obj.h"
#include "py/runtime.h"
#include "py/objstr.h"
#include "py/objlist.h"
#if MICROPY_PY_UBLUEPY
#include "ble_drv.h"
STATIC void ubluepy_peripheral_print(const mp_print_t *print, mp_obj_t o, mp_print_kind_t kind) {
ubluepy_peripheral_obj_t * self = (ubluepy_peripheral_obj_t *)o;
(void)self;
mp_printf(print, "Peripheral(conn_handle: " HEX2_FMT ")",
self->conn_handle);
}
STATIC void gap_event_handler(mp_obj_t self_in, uint16_t event_id, uint16_t conn_handle, uint16_t length, uint8_t * data) {
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (event_id == 16) { // connect event
self->conn_handle = conn_handle;
} else if (event_id == 17) { // disconnect event
self->conn_handle = 0xFFFF; // invalid connection handle
}
if (self->conn_handler != mp_const_none) {
mp_obj_t args[3];
mp_uint_t num_of_args = 3;
args[0] = MP_OBJ_NEW_SMALL_INT(event_id);
args[1] = MP_OBJ_NEW_SMALL_INT(conn_handle);
if (data != NULL) {
args[2] = mp_obj_new_bytearray_by_ref(length, data);
} else {
args[2] = mp_const_none;
}
// for now hard-code all events to conn_handler
mp_call_function_n_kw(self->conn_handler, num_of_args, 0, args);
}
(void)self;
}
STATIC void gatts_event_handler(mp_obj_t self_in, uint16_t event_id, uint16_t attr_handle, uint16_t length, uint8_t * data) {
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(self_in);
if (self->conn_handler != mp_const_none) {
mp_obj_t args[3];
mp_uint_t num_of_args = 3;
args[0] = MP_OBJ_NEW_SMALL_INT(event_id);
args[1] = MP_OBJ_NEW_SMALL_INT(attr_handle);
if (data != NULL) {
args[2] = mp_obj_new_bytearray_by_ref(length, data);
} else {
args[2] = mp_const_none;
}
// for now hard-code all events to conn_handler
mp_call_function_n_kw(self->conn_handler, num_of_args, 0, args);
}
}
#if MICROPY_PY_UBLUEPY_CENTRAL
static volatile bool m_disc_evt_received;
STATIC void gattc_event_handler(mp_obj_t self_in, uint16_t event_id, uint16_t attr_handle, uint16_t length, uint8_t * data) {
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(self_in);
(void)self;
m_disc_evt_received = true;
}
#endif
STATIC mp_obj_t ubluepy_peripheral_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
enum {
ARG_NEW_DEVICE_ADDR,
ARG_NEW_ADDR_TYPE
};
static const mp_arg_t allowed_args[] = {
{ ARG_NEW_DEVICE_ADDR, MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ ARG_NEW_ADDR_TYPE, MP_ARG_OBJ, {.u_obj = mp_const_none} },
};
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
ubluepy_peripheral_obj_t *s = m_new_obj(ubluepy_peripheral_obj_t);
s->base.type = type;
s->delegate = mp_const_none;
s->conn_handler = mp_const_none;
s->notif_handler = mp_const_none;
s->conn_handle = 0xFFFF;
s->service_list = mp_obj_new_list(0, NULL);
return MP_OBJ_FROM_PTR(s);
}
/// \method withDelegate(DefaultDelegate)
/// Set delegate instance for handling Bluetooth LE events.
///
STATIC mp_obj_t peripheral_with_delegate(mp_obj_t self_in, mp_obj_t delegate) {
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(self_in);
self->delegate = delegate;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(ubluepy_peripheral_with_delegate_obj, peripheral_with_delegate);
/// \method setNotificationHandler(func)
/// Set handler for Bluetooth LE notification events.
///
STATIC mp_obj_t peripheral_set_notif_handler(mp_obj_t self_in, mp_obj_t func) {
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(self_in);
self->notif_handler = func;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(ubluepy_peripheral_set_notif_handler_obj, peripheral_set_notif_handler);
/// \method setConnectionHandler(func)
/// Set handler for Bluetooth LE connection events.
///
STATIC mp_obj_t peripheral_set_conn_handler(mp_obj_t self_in, mp_obj_t func) {
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(self_in);
self->conn_handler = func;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(ubluepy_peripheral_set_conn_handler_obj, peripheral_set_conn_handler);
#if MICROPY_PY_UBLUEPY_PERIPHERAL
/// \method advertise(device_name, [service=[service1, service2, ...]], [data=bytearray], [connectable=True])
/// Start advertising. Connectable advertisment type by default.
///
STATIC mp_obj_t peripheral_advertise(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_device_name, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_services, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_data, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
{ MP_QSTR_connectable, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
};
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
self->role = UBLUEPY_ROLE_PERIPHERAL;
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
// ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
mp_obj_t device_name_obj = args[0].u_obj;
mp_obj_t service_obj = args[1].u_obj;
mp_obj_t data_obj = args[2].u_obj;
mp_obj_t connectable_obj = args[3].u_obj;
ubluepy_advertise_data_t adv_data;
memset(&adv_data, 0, sizeof(ubluepy_advertise_data_t));
if (device_name_obj != mp_const_none && MP_OBJ_IS_STR(device_name_obj)) {
GET_STR_DATA_LEN(device_name_obj, str_data, str_len);
adv_data.p_device_name = (uint8_t *)str_data;
adv_data.device_name_len = str_len;
}
if (service_obj != mp_const_none) {
mp_obj_t * services = NULL;
mp_uint_t num_services;
mp_obj_get_array(service_obj, &num_services, &services);
if (num_services > 0) {
adv_data.p_services = services;
adv_data.num_of_services = num_services;
}
}
if (data_obj != mp_const_none) {
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(data_obj, &bufinfo, MP_BUFFER_READ);
if (bufinfo.len > 0) {
adv_data.p_data = bufinfo.buf;
adv_data.data_len = bufinfo.len;
}
}
adv_data.connectable = true;
if (connectable_obj != mp_const_none && !(mp_obj_is_true(connectable_obj))) {
adv_data.connectable = false;
} else {
ble_drv_gap_event_handler_set(MP_OBJ_FROM_PTR(self), gap_event_handler);
ble_drv_gatts_event_handler_set(MP_OBJ_FROM_PTR(self), gatts_event_handler);
}
(void)ble_drv_advertise_data(&adv_data);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(ubluepy_peripheral_advertise_obj, 0, peripheral_advertise);
/// \method advertise_stop()
/// Stop advertisment if any onging advertisment.
///
STATIC mp_obj_t peripheral_advertise_stop(mp_obj_t self_in) {
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(self_in);
(void)self;
ble_drv_advertise_stop();
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(ubluepy_peripheral_advertise_stop_obj, peripheral_advertise_stop);
#endif // MICROPY_PY_UBLUEPY_PERIPHERAL
/// \method disconnect()
/// disconnect connection.
///
STATIC mp_obj_t peripheral_disconnect(mp_obj_t self_in) {
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(self_in);
(void)self;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(ubluepy_peripheral_disconnect_obj, peripheral_disconnect);
/// \method addService(Service)
/// Add service to the Peripheral.
///
STATIC mp_obj_t peripheral_add_service(mp_obj_t self_in, mp_obj_t service) {
ubluepy_peripheral_obj_t * self = MP_OBJ_TO_PTR(self_in);
ubluepy_service_obj_t * p_service = MP_OBJ_TO_PTR(service);
p_service->p_periph = self;
mp_obj_list_append(self->service_list, service);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(ubluepy_peripheral_add_service_obj, peripheral_add_service);
/// \method getServices()
/// Return list with all service registered in the Peripheral.
///
STATIC mp_obj_t peripheral_get_services(mp_obj_t self_in) {
ubluepy_peripheral_obj_t * self = MP_OBJ_TO_PTR(self_in);
return self->service_list;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(ubluepy_peripheral_get_services_obj, peripheral_get_services);
#if MICROPY_PY_UBLUEPY_CENTRAL
void static disc_add_service(mp_obj_t self, ble_drv_service_data_t * p_service_data) {
ubluepy_service_obj_t * p_service = m_new_obj(ubluepy_service_obj_t);
p_service->base.type = &ubluepy_service_type;
ubluepy_uuid_obj_t * p_uuid = m_new_obj(ubluepy_uuid_obj_t);
p_uuid->base.type = &ubluepy_uuid_type;
p_service->p_uuid = p_uuid;
p_uuid->type = p_service_data->uuid_type;
p_uuid->value[0] = p_service_data->uuid & 0xFF;
p_uuid->value[1] = p_service_data->uuid >> 8;
p_service->handle = p_service_data->start_handle;
p_service->start_handle = p_service_data->start_handle;
p_service->end_handle = p_service_data->end_handle;
p_service->char_list = mp_obj_new_list(0, NULL);
peripheral_add_service(self, MP_OBJ_FROM_PTR(p_service));
}
void static disc_add_char(mp_obj_t service_in, ble_drv_char_data_t * p_desc_data) {
ubluepy_service_obj_t * p_service = MP_OBJ_TO_PTR(service_in);
ubluepy_characteristic_obj_t * p_char = m_new_obj(ubluepy_characteristic_obj_t);
p_char->base.type = &ubluepy_characteristic_type;
ubluepy_uuid_obj_t * p_uuid = m_new_obj(ubluepy_uuid_obj_t);
p_uuid->base.type = &ubluepy_uuid_type;
p_char->p_uuid = p_uuid;
p_uuid->type = p_desc_data->uuid_type;
p_uuid->value[0] = p_desc_data->uuid & 0xFF;
p_uuid->value[1] = p_desc_data->uuid >> 8;
// add characteristic specific data from discovery
p_char->props = p_desc_data->props;
p_char->handle = p_desc_data->value_handle;
// equivalent to ubluepy_service.c - service_add_characteristic()
// except the registration of the characteristic towards the bluetooth stack
p_char->service_handle = p_service->handle;
p_char->p_service = p_service;
mp_obj_list_append(p_service->char_list, MP_OBJ_FROM_PTR(p_char));
}
/// \method connect(device_address [, addr_type=ADDR_TYPE_PUBLIC])
/// Connect to device peripheral with the given device address.
/// addr_type can be either ADDR_TYPE_PUBLIC (default) or
/// ADDR_TYPE_RANDOM_STATIC.
///
STATIC mp_obj_t peripheral_connect(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
ubluepy_peripheral_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
mp_obj_t dev_addr = pos_args[1];
self->role = UBLUEPY_ROLE_CENTRAL;
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_addr_type, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = UBLUEPY_ADDR_TYPE_PUBLIC } },
};
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args - 2, pos_args + 2, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
uint8_t addr_type = args[0].u_int;
ble_drv_gap_event_handler_set(MP_OBJ_FROM_PTR(self), gap_event_handler);
if (MP_OBJ_IS_STR(dev_addr)) {
GET_STR_DATA_LEN(dev_addr, str_data, str_len);
if (str_len == 17) { // Example "11:22:33:aa:bb:cc"
uint8_t * p_addr = m_new(uint8_t, 6);
p_addr[0] = unichar_xdigit_value(str_data[16]);
p_addr[0] += unichar_xdigit_value(str_data[15]) << 4;
p_addr[1] = unichar_xdigit_value(str_data[13]);
p_addr[1] += unichar_xdigit_value(str_data[12]) << 4;
p_addr[2] = unichar_xdigit_value(str_data[10]);
p_addr[2] += unichar_xdigit_value(str_data[9]) << 4;
p_addr[3] = unichar_xdigit_value(str_data[7]);
p_addr[3] += unichar_xdigit_value(str_data[6]) << 4;
p_addr[4] = unichar_xdigit_value(str_data[4]);
p_addr[4] += unichar_xdigit_value(str_data[3]) << 4;
p_addr[5] = unichar_xdigit_value(str_data[1]);
p_addr[5] += unichar_xdigit_value(str_data[0]) << 4;
ble_drv_connect(p_addr, addr_type);
m_del(uint8_t, p_addr, 6);
}
}
// block until connected
while (self->conn_handle == 0xFFFF) {
;
}
ble_drv_gattc_event_handler_set(MP_OBJ_FROM_PTR(self), gattc_event_handler);
bool service_disc_retval = ble_drv_discover_services(self, self->conn_handle, 0x0001, disc_add_service);
// continue discovery of primary services ...
while (service_disc_retval) {
// locate the last added service
mp_obj_t * services = NULL;
mp_uint_t num_services;
mp_obj_get_array(self->service_list, &num_services, &services);
ubluepy_service_obj_t * p_service = (ubluepy_service_obj_t *)services[num_services - 1];
service_disc_retval = ble_drv_discover_services(self,
self->conn_handle,
p_service->end_handle + 1,
disc_add_service);
}
// For each service perform a characteristic discovery
mp_obj_t * services = NULL;
mp_uint_t num_services;
mp_obj_get_array(self->service_list, &num_services, &services);
for (uint16_t s = 0; s < num_services; s++) {
ubluepy_service_obj_t * p_service = (ubluepy_service_obj_t *)services[s];
bool char_disc_retval = ble_drv_discover_characteristic(p_service,
self->conn_handle,
p_service->start_handle,
p_service->end_handle,
disc_add_char);
// continue discovery of characteristics ...
while (char_disc_retval) {
mp_obj_t * characteristics = NULL;
mp_uint_t num_chars;
mp_obj_get_array(p_service->char_list, &num_chars, &characteristics);
ubluepy_characteristic_obj_t * p_char = (ubluepy_characteristic_obj_t *)characteristics[num_chars - 1];
uint16_t next_handle = p_char->handle + 1;
if ((next_handle) < p_service->end_handle) {
char_disc_retval = ble_drv_discover_characteristic(p_service,
self->conn_handle,
next_handle,
p_service->end_handle,
disc_add_char);
} else {
break;
}
}
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(ubluepy_peripheral_connect_obj, 2, peripheral_connect);
#endif
STATIC const mp_rom_map_elem_t ubluepy_peripheral_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_withDelegate), MP_ROM_PTR(&ubluepy_peripheral_with_delegate_obj) },
{ MP_ROM_QSTR(MP_QSTR_setNotificationHandler), MP_ROM_PTR(&ubluepy_peripheral_set_notif_handler_obj) },
{ MP_ROM_QSTR(MP_QSTR_setConnectionHandler), MP_ROM_PTR(&ubluepy_peripheral_set_conn_handler_obj) },
{ MP_ROM_QSTR(MP_QSTR_getServices), MP_ROM_PTR(&ubluepy_peripheral_get_services_obj) },
#if MICROPY_PY_UBLUEPY_CENTRAL
{ MP_ROM_QSTR(MP_QSTR_connect), MP_ROM_PTR(&ubluepy_peripheral_connect_obj) },
#if 0
{ MP_ROM_QSTR(MP_QSTR_disconnect), MP_ROM_PTR(&ubluepy_peripheral_disconnect_obj) },
{ MP_ROM_QSTR(MP_QSTR_getServiceByUUID), MP_ROM_PTR(&ubluepy_peripheral_get_service_by_uuid_obj) },
{ MP_ROM_QSTR(MP_QSTR_getCharacteristics), MP_ROM_PTR(&ubluepy_peripheral_get_chars_obj) },
{ MP_ROM_QSTR(MP_QSTR_getDescriptors), MP_ROM_PTR(&ubluepy_peripheral_get_descs_obj) },
{ MP_ROM_QSTR(MP_QSTR_waitForNotifications), MP_ROM_PTR(&ubluepy_peripheral_wait_for_notif_obj) },
{ MP_ROM_QSTR(MP_QSTR_writeCharacteristic), MP_ROM_PTR(&ubluepy_peripheral_write_char_obj) },
{ MP_ROM_QSTR(MP_QSTR_readCharacteristic), MP_ROM_PTR(&ubluepy_peripheral_read_char_obj) },
#endif // 0
#endif // MICROPY_PY_UBLUEPY_CENTRAL
#if MICROPY_PY_UBLUEPY_PERIPHERAL
{ MP_ROM_QSTR(MP_QSTR_advertise), MP_ROM_PTR(&ubluepy_peripheral_advertise_obj) },
{ MP_ROM_QSTR(MP_QSTR_advertise_stop), MP_ROM_PTR(&ubluepy_peripheral_advertise_stop_obj) },
{ MP_ROM_QSTR(MP_QSTR_disconnect), MP_ROM_PTR(&ubluepy_peripheral_disconnect_obj) },
{ MP_ROM_QSTR(MP_QSTR_addService), MP_ROM_PTR(&ubluepy_peripheral_add_service_obj) },
#if 0
{ MP_ROM_QSTR(MP_QSTR_addCharacteristic), MP_ROM_PTR(&ubluepy_peripheral_add_char_obj) },
{ MP_ROM_QSTR(MP_QSTR_addDescriptor), MP_ROM_PTR(&ubluepy_peripheral_add_desc_obj) },
{ MP_ROM_QSTR(MP_QSTR_writeCharacteristic), MP_ROM_PTR(&ubluepy_peripheral_write_char_obj) },
{ MP_ROM_QSTR(MP_QSTR_readCharacteristic), MP_ROM_PTR(&ubluepy_peripheral_read_char_obj) },
#endif
#endif
#if MICROPY_PY_UBLUEPY_BROADCASTER
{ MP_ROM_QSTR(MP_QSTR_advertise), MP_ROM_PTR(&ubluepy_peripheral_advertise_obj) },
#endif
#if MICROPY_PY_UBLUEPY_OBSERVER
// Nothing yet.
#endif
};
STATIC MP_DEFINE_CONST_DICT(ubluepy_peripheral_locals_dict, ubluepy_peripheral_locals_dict_table);
const mp_obj_type_t ubluepy_peripheral_type = {
{ &mp_type_type },
.name = MP_QSTR_Peripheral,
.print = ubluepy_peripheral_print,
.make_new = ubluepy_peripheral_make_new,
.locals_dict = (mp_obj_dict_t*)&ubluepy_peripheral_locals_dict
};
#endif // MICROPY_PY_UBLUEPY