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circuitpython/nrf5/drivers/bluetooth/ble_drv.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 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.
*/
#if BLUETOOTH_SD
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include "py/runtime.h"
#include "ble_drv.h"
#include "mpconfigport.h"
#include "nrf_sdm.h"
#include "ble_gap.h"
#include "ble.h" // sd_ble_uuid_encode
#define BLE_DRIVER_VERBOSE 0
#if BLE_DRIVER_VERBOSE
#define BLE_DRIVER_LOG printf
#else
#define BLE_DRIVER_LOG(...)
#endif
#define BLE_ADV_LENGTH_FIELD_SIZE 1
#define BLE_ADV_AD_TYPE_FIELD_SIZE 1
#define BLE_AD_TYPE_FLAGS_DATA_SIZE 1
#define MSEC_TO_UNITS(TIME, RESOLUTION) (((TIME) * 1000) / (RESOLUTION))
#define UNIT_0_625_MS (625)
#define UNIT_10_MS (10000)
#define APP_CFG_NON_CONN_ADV_TIMEOUT 0 // Disable timeout.
#define NON_CONNECTABLE_ADV_INTERVAL MSEC_TO_UNITS(100, UNIT_0_625_MS)
#define BLE_MIN_CONN_INTERVAL MSEC_TO_UNITS(12, UNIT_0_625_MS)
#define BLE_MAX_CONN_INTERVAL MSEC_TO_UNITS(12, UNIT_0_625_MS)
#define BLE_SLAVE_LATENCY 0
#define BLE_CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS)
#define SD_TEST_OR_ENABLE() \
if (ble_drv_stack_enabled() == 0) { \
(void)ble_drv_stack_enable(); \
}
static volatile bool m_adv_in_progress;
static volatile bool m_tx_in_progress;
static ble_drv_gap_evt_callback_t gap_event_handler;
static ble_drv_gatts_evt_callback_t gatts_event_handler;
static mp_obj_t mp_gap_observer;
static mp_obj_t mp_gatts_observer;
#if (BLUETOOTH_SD == 130) || (BLUETOOTH_SD == 132)
static volatile bool m_primary_service_found;
static volatile bool m_characteristic_found;
static volatile bool m_write_done;
static volatile ble_drv_adv_evt_callback_t adv_event_handler;
static volatile ble_drv_gattc_evt_callback_t gattc_event_handler;
static volatile ble_drv_disc_add_service_callback_t disc_add_service_handler;
static volatile ble_drv_disc_add_char_callback_t disc_add_char_handler;
static volatile ble_drv_gattc_char_data_callback_t gattc_char_data_handle;
static mp_obj_t mp_adv_observer;
static mp_obj_t mp_gattc_observer;
static mp_obj_t mp_gattc_disc_service_observer;
static mp_obj_t mp_gattc_disc_char_observer;
static mp_obj_t mp_gattc_char_data_observer;
#endif
#if (BLUETOOTH_SD != 100) && (BLUETOOTH_SD != 110)
#include "nrf_nvic.h"
#ifdef NRF52
nrf_nvic_state_t nrf_nvic_state = {0};
#endif // NRF52
#endif // (BLUETOOTH_SD != 100)
#if (BLUETOOTH_SD == 100 ) || (BLUETOOTH_SD == 110)
void softdevice_assert_handler(uint32_t pc, uint16_t line_number, const uint8_t * p_file_name) {
BLE_DRIVER_LOG("ERROR: SoftDevice assert!!!");
}
#else
void softdevice_assert_handler(uint32_t id, uint32_t pc, uint32_t info) {
BLE_DRIVER_LOG("ERROR: SoftDevice assert!!!");
}
#endif
uint32_t ble_drv_stack_enable(void) {
m_adv_in_progress = false;
m_tx_in_progress = false;
#if (BLUETOOTH_SD == 100) || (BLUETOOTH_SD == 110)
#if BLUETOOTH_LFCLK_RC
uint32_t err_code = sd_softdevice_enable(NRF_CLOCK_LFCLKSRC_RC_250_PPM_250MS_CALIBRATION,
softdevice_assert_handler);
#else
uint32_t err_code = sd_softdevice_enable(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM,
softdevice_assert_handler);
#endif // BLUETOOTH_LFCLK_RC
#else
nrf_clock_lf_cfg_t clock_config = {
.source = NRF_CLOCK_LF_SRC_XTAL,
.rc_ctiv = 0,
.rc_temp_ctiv = 0,
.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM
};
uint32_t err_code = sd_softdevice_enable(&clock_config,
softdevice_assert_handler);
#endif
BLE_DRIVER_LOG("SoftDevice enable status: " UINT_FMT "\n", (uint16_t)err_code);
#if NRF51
err_code = sd_nvic_EnableIRQ(SWI2_IRQn);
#else
err_code = sd_nvic_EnableIRQ(SWI2_EGU2_IRQn);
#endif
BLE_DRIVER_LOG("IRQ enable status: " UINT_FMT "\n", (uint16_t)err_code);
// Enable BLE stack.
ble_enable_params_t ble_enable_params;
memset(&ble_enable_params, 0x00, sizeof(ble_enable_params));
ble_enable_params.gatts_enable_params.attr_tab_size = BLE_GATTS_ATTR_TAB_SIZE_DEFAULT;
ble_enable_params.gatts_enable_params.service_changed = 0;
#if (BLUETOOTH_SD == 132)
ble_enable_params.gap_enable_params.periph_conn_count = 1;
ble_enable_params.gap_enable_params.central_conn_count = 1;
#endif
#if (BLUETOOTH_SD == 100) || (BLUETOOTH_SD == 110)
err_code = sd_ble_enable(&ble_enable_params);
#else
#if (BLUETOOTH_SD == 132)
uint32_t app_ram_start = 0x200039c0;
err_code = sd_ble_enable(&ble_enable_params, &app_ram_start); // 8K SD headroom from linker script.
BLE_DRIVER_LOG("BLE ram size: " UINT_FMT "\n", (uint16_t)app_ram_start);
#else
err_code = sd_ble_enable(&ble_enable_params, (uint32_t *)0x20001870);
#endif
#endif
BLE_DRIVER_LOG("BLE enable status: " UINT_FMT "\n", (uint16_t)err_code);
// set up security mode
ble_gap_conn_params_t gap_conn_params;
ble_gap_conn_sec_mode_t sec_mode;
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
const char device_name[] = "micr";
if ((err_code = sd_ble_gap_device_name_set(&sec_mode,
(const uint8_t *)device_name,
strlen(device_name))) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Cannot apply GAP parameters."));
}
// set connection parameters
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
gap_conn_params.min_conn_interval = BLE_MIN_CONN_INTERVAL;
gap_conn_params.max_conn_interval = BLE_MAX_CONN_INTERVAL;
gap_conn_params.slave_latency = BLE_SLAVE_LATENCY;
gap_conn_params.conn_sup_timeout = BLE_CONN_SUP_TIMEOUT;
if (sd_ble_gap_ppcp_set(&gap_conn_params) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Cannot set PPCP parameters."));
}
return err_code;
}
void ble_drv_stack_disable(void) {
sd_softdevice_disable();
}
uint8_t ble_drv_stack_enabled(void) {
uint8_t is_enabled;
uint32_t err_code = sd_softdevice_is_enabled(&is_enabled);
(void)err_code;
BLE_DRIVER_LOG("Is enabled status: " UINT_FMT "\n", (uint16_t)err_code);
return is_enabled;
}
void ble_drv_address_get(ble_drv_addr_t * p_addr) {
SD_TEST_OR_ENABLE();
ble_gap_addr_t local_ble_addr;
#if (BLUETOOTH_SD == 132 && BLE_API_VERSION == 3)
uint32_t err_code = sd_ble_gap_addr_get(&local_ble_addr);
#else
uint32_t err_code = sd_ble_gap_address_get(&local_ble_addr);
#endif
if (err_code != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not query for the device address."));
}
BLE_DRIVER_LOG("ble address, type: " HEX2_FMT ", " \
"address: " HEX2_FMT ":" HEX2_FMT ":" HEX2_FMT ":" \
HEX2_FMT ":" HEX2_FMT ":" HEX2_FMT "\n", \
local_ble_addr.addr_type, \
local_ble_addr.addr[5], local_ble_addr.addr[4], local_ble_addr.addr[3], \
local_ble_addr.addr[2], local_ble_addr.addr[1], local_ble_addr.addr[0]);
p_addr->addr_type = local_ble_addr.addr_type;
memcpy(p_addr->addr, local_ble_addr.addr, 6);
}
bool ble_drv_uuid_add_vs(uint8_t * p_uuid, uint8_t * idx) {
SD_TEST_OR_ENABLE();
if (sd_ble_uuid_vs_add((ble_uuid128_t const *)p_uuid, idx) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not add Vendor Specific 128-bit UUID."));
}
return true;
}
bool ble_drv_service_add(ubluepy_service_obj_t * p_service_obj) {
SD_TEST_OR_ENABLE();
if (p_service_obj->p_uuid->type > BLE_UUID_TYPE_BLE) {
ble_uuid_t uuid;
uuid.type = p_service_obj->p_uuid->uuid_vs_idx;
uuid.uuid = p_service_obj->p_uuid->value[0];
uuid.uuid += p_service_obj->p_uuid->value[1] << 8;
if (sd_ble_gatts_service_add(p_service_obj->type,
&uuid,
&p_service_obj->handle) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not add Service."));
}
} else if (p_service_obj->p_uuid->type == BLE_UUID_TYPE_BLE) {
printf("adding service\n");
ble_uuid_t uuid;
uuid.type = p_service_obj->p_uuid->type;
uuid.uuid = p_service_obj->p_uuid->value[0];
uuid.uuid += p_service_obj->p_uuid->value[1] << 8;
printf("adding service\n");
if (sd_ble_gatts_service_add(p_service_obj->type,
&uuid,
&p_service_obj->handle) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not add Service."));
}
}
return true;
}
bool ble_drv_characteristic_add(ubluepy_characteristic_obj_t * p_char_obj) {
ble_gatts_char_md_t char_md;
ble_gatts_attr_md_t cccd_md;
ble_gatts_attr_t attr_char_value;
ble_uuid_t uuid;
ble_gatts_attr_md_t attr_md;
memset(&char_md, 0, sizeof(char_md));
char_md.char_props.broadcast = (p_char_obj->props & UBLUEPY_PROP_BROADCAST) ? 1 : 0;
char_md.char_props.read = (p_char_obj->props & UBLUEPY_PROP_READ) ? 1 : 0;
char_md.char_props.write_wo_resp = (p_char_obj->props & UBLUEPY_PROP_WRITE_WO_RESP) ? 1 : 0;
char_md.char_props.write = (p_char_obj->props & UBLUEPY_PROP_WRITE) ? 1 : 0;
char_md.char_props.notify = (p_char_obj->props & UBLUEPY_PROP_NOTIFY) ? 1 : 0;
char_md.char_props.indicate = (p_char_obj->props & UBLUEPY_PROP_INDICATE) ? 1 : 0;
#if 0
char_md.char_props.auth_signed_wr = (p_char_obj->props & UBLUEPY_PROP_NOTIFY) ? 1 : 0;
#endif
char_md.p_char_user_desc = NULL;
char_md.p_char_pf = NULL;
char_md.p_user_desc_md = NULL;
char_md.p_sccd_md = NULL;
// if cccd
if (p_char_obj->attrs & UBLUEPY_ATTR_CCCD) {
memset(&cccd_md, 0, sizeof(cccd_md));
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm);
cccd_md.vloc = BLE_GATTS_VLOC_STACK;
char_md.p_cccd_md = &cccd_md;
} else {
char_md.p_cccd_md = NULL;
}
uuid.type = p_char_obj->p_uuid->type;
uuid.uuid = p_char_obj->p_uuid->value[0];
uuid.uuid += p_char_obj->p_uuid->value[1] << 8;
memset(&attr_md, 0, sizeof(attr_md));
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);
attr_md.vloc = BLE_GATTS_VLOC_STACK;
attr_md.rd_auth = 0;
attr_md.wr_auth = 0;
attr_md.vlen = 1;
memset(&attr_char_value, 0, sizeof(attr_char_value));
attr_char_value.p_uuid = &uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len = sizeof(uint8_t);
attr_char_value.init_offs = 0;
attr_char_value.max_len = (GATT_MTU_SIZE_DEFAULT - 3);
ble_gatts_char_handles_t handles;
if (sd_ble_gatts_characteristic_add(p_char_obj->service_handle,
&char_md,
&attr_char_value,
&handles) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not add Characteristic."));
}
// apply handles to object instance
p_char_obj->handle = handles.value_handle;
p_char_obj->user_desc_handle = handles.user_desc_handle;
p_char_obj->cccd_handle = handles.cccd_handle;
p_char_obj->sccd_handle = handles.sccd_handle;
return true;
}
bool ble_drv_advertise_data(ubluepy_advertise_data_t * p_adv_params) {
SD_TEST_OR_ENABLE();
uint8_t byte_pos = 0;
uint8_t adv_data[BLE_GAP_ADV_MAX_SIZE];
if (p_adv_params->device_name_len > 0) {
ble_gap_conn_sec_mode_t sec_mode;
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
if (sd_ble_gap_device_name_set(&sec_mode,
p_adv_params->p_device_name,
p_adv_params->device_name_len) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not apply device name in the stack."));
}
BLE_DRIVER_LOG("Device name applied\n");
adv_data[byte_pos] = (BLE_ADV_AD_TYPE_FIELD_SIZE + p_adv_params->device_name_len);
byte_pos += BLE_ADV_LENGTH_FIELD_SIZE;
adv_data[byte_pos] = BLE_GAP_AD_TYPE_COMPLETE_LOCAL_NAME;
byte_pos += BLE_ADV_AD_TYPE_FIELD_SIZE;
memcpy(&adv_data[byte_pos], p_adv_params->p_device_name, p_adv_params->device_name_len);
// increment position counter to see if it fits, and in case more content should
// follow in this adv packet.
byte_pos += p_adv_params->device_name_len;
}
// Add FLAGS only if manually controlled data has not been used.
if (p_adv_params->data_len == 0) {
// set flags, default to disc mode
adv_data[byte_pos] = (BLE_ADV_AD_TYPE_FIELD_SIZE + BLE_AD_TYPE_FLAGS_DATA_SIZE);
byte_pos += BLE_ADV_LENGTH_FIELD_SIZE;
adv_data[byte_pos] = BLE_GAP_AD_TYPE_FLAGS;
byte_pos += BLE_AD_TYPE_FLAGS_DATA_SIZE;
adv_data[byte_pos] = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
byte_pos += 1;
}
if (p_adv_params->num_of_services > 0) {
bool type_16bit_present = false;
bool type_128bit_present = false;
for (uint8_t i = 0; i < p_adv_params->num_of_services; i++) {
ubluepy_service_obj_t * p_service = (ubluepy_service_obj_t *)p_adv_params->p_services[i];
if (p_service->p_uuid->type == UBLUEPY_UUID_16_BIT) {
type_16bit_present = true;
}
if (p_service->p_uuid->type == UBLUEPY_UUID_128_BIT) {
type_128bit_present = true;
}
}
if (type_16bit_present) {
uint8_t size_byte_pos = byte_pos;
// skip length byte for now, apply total length post calculation
byte_pos += BLE_ADV_LENGTH_FIELD_SIZE;
adv_data[byte_pos] = BLE_GAP_AD_TYPE_16BIT_SERVICE_UUID_COMPLETE;
byte_pos += BLE_ADV_AD_TYPE_FIELD_SIZE;
uint8_t uuid_total_size = 0;
uint8_t encoded_size = 0;
for (uint8_t i = 0; i < p_adv_params->num_of_services; i++) {
ubluepy_service_obj_t * p_service = (ubluepy_service_obj_t *)p_adv_params->p_services[i];
ble_uuid_t uuid;
uuid.type = p_service->p_uuid->type;
uuid.uuid = p_service->p_uuid->value[0];
uuid.uuid += p_service->p_uuid->value[1] << 8;
// calculate total size of uuids
if (sd_ble_uuid_encode(&uuid, &encoded_size, NULL) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not encode UUID, to check length."));
}
// do encoding into the adv buffer
if (sd_ble_uuid_encode(&uuid, &encoded_size, &adv_data[byte_pos]) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can encode UUID into the advertisment packet."));
}
BLE_DRIVER_LOG("encoded uuid for service %u: ", 0);
for (uint8_t j = 0; j < encoded_size; j++) {
BLE_DRIVER_LOG(HEX2_FMT " ", adv_data[byte_pos + j]);
}
BLE_DRIVER_LOG("\n");
uuid_total_size += encoded_size; // size of entry
byte_pos += encoded_size; // relative to adv data packet
BLE_DRIVER_LOG("ADV: uuid size: %u, type: %u, uuid: %x%x, vs_idx: %u\n",
encoded_size, p_service->p_uuid->type,
p_service->p_uuid->value[1],
p_service->p_uuid->value[0],
p_service->p_uuid->uuid_vs_idx);
}
adv_data[size_byte_pos] = (BLE_ADV_AD_TYPE_FIELD_SIZE + uuid_total_size);
}
if (type_128bit_present) {
uint8_t size_byte_pos = byte_pos;
// skip length byte for now, apply total length post calculation
byte_pos += BLE_ADV_LENGTH_FIELD_SIZE;
adv_data[byte_pos] = BLE_GAP_AD_TYPE_128BIT_SERVICE_UUID_COMPLETE;
byte_pos += BLE_ADV_AD_TYPE_FIELD_SIZE;
uint8_t uuid_total_size = 0;
uint8_t encoded_size = 0;
for (uint8_t i = 0; i < p_adv_params->num_of_services; i++) {
ubluepy_service_obj_t * p_service = (ubluepy_service_obj_t *)p_adv_params->p_services[i];
ble_uuid_t uuid;
uuid.type = p_service->p_uuid->uuid_vs_idx;
uuid.uuid = p_service->p_uuid->value[0];
uuid.uuid += p_service->p_uuid->value[1] << 8;
// calculate total size of uuids
if (sd_ble_uuid_encode(&uuid, &encoded_size, NULL) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not encode UUID, to check length."));
}
// do encoding into the adv buffer
if (sd_ble_uuid_encode(&uuid, &encoded_size, &adv_data[byte_pos]) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can encode UUID into the advertisment packet."));
}
BLE_DRIVER_LOG("encoded uuid for service %u: ", 0);
for (uint8_t j = 0; j < encoded_size; j++) {
BLE_DRIVER_LOG(HEX2_FMT " ", adv_data[byte_pos + j]);
}
BLE_DRIVER_LOG("\n");
uuid_total_size += encoded_size; // size of entry
byte_pos += encoded_size; // relative to adv data packet
BLE_DRIVER_LOG("ADV: uuid size: %u, type: %x%x, uuid: %u, vs_idx: %u\n",
encoded_size, p_service->p_uuid->type,
p_service->p_uuid->value[1],
p_service->p_uuid->value[0],
p_service->p_uuid->uuid_vs_idx);
}
adv_data[size_byte_pos] = (BLE_ADV_AD_TYPE_FIELD_SIZE + uuid_total_size);
}
}
if ((p_adv_params->data_len > 0) && (p_adv_params->p_data != NULL)) {
if (p_adv_params->data_len + byte_pos > BLE_GAP_ADV_MAX_SIZE) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not fit data into the advertisment packet."));
}
memcpy(adv_data, p_adv_params->p_data, p_adv_params->data_len);
byte_pos += p_adv_params->data_len;
}
// scan response data not set
uint32_t err_code;
if ((err_code = sd_ble_gap_adv_data_set(adv_data, byte_pos, NULL, 0)) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not apply advertisment data. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
BLE_DRIVER_LOG("Set Adv data size: " UINT_FMT "\n", byte_pos);
static ble_gap_adv_params_t m_adv_params;
// initialize advertising params
memset(&m_adv_params, 0, sizeof(m_adv_params));
if (p_adv_params->connectable) {
m_adv_params.type = BLE_GAP_ADV_TYPE_ADV_IND;
} else {
m_adv_params.type = BLE_GAP_ADV_TYPE_ADV_NONCONN_IND;
}
m_adv_params.p_peer_addr = NULL; // undirected advertisement
m_adv_params.fp = BLE_GAP_ADV_FP_ANY;
m_adv_params.interval = MSEC_TO_UNITS(100, UNIT_0_625_MS); // approx 8 ms
m_adv_params.timeout = 0; // infinite advertisment
ble_drv_advertise_stop();
err_code = sd_ble_gap_adv_start(&m_adv_params);
if (err_code != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not start advertisment. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
m_adv_in_progress = true;
return true;
}
void ble_drv_advertise_stop(void) {
if (m_adv_in_progress == true) {
uint32_t err_code;
if ((err_code = sd_ble_gap_adv_stop()) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not stop advertisment. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
}
m_adv_in_progress = false;
}
void ble_drv_attr_s_read(uint16_t conn_handle, uint16_t handle, uint16_t len, uint8_t * p_data) {
ble_gatts_value_t gatts_value;
memset(&gatts_value, 0, sizeof(gatts_value));
gatts_value.len = len;
gatts_value.offset = 0;
gatts_value.p_value = p_data;
uint32_t err_code = sd_ble_gatts_value_get(conn_handle,
handle,
&gatts_value);
if (err_code != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not read attribute value. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
}
void ble_drv_attr_s_write(uint16_t conn_handle, uint16_t handle, uint16_t len, uint8_t * p_data) {
ble_gatts_value_t gatts_value;
memset(&gatts_value, 0, sizeof(gatts_value));
gatts_value.len = len;
gatts_value.offset = 0;
gatts_value.p_value = p_data;
uint32_t err_code = sd_ble_gatts_value_set(conn_handle, handle, &gatts_value);
if (err_code != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not write attribute value. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
}
void ble_drv_attr_s_notify(uint16_t conn_handle, uint16_t handle, uint16_t len, uint8_t * p_data) {
uint16_t hvx_len = len;
ble_gatts_hvx_params_t hvx_params;
memset(&hvx_params, 0, sizeof(hvx_params));
hvx_params.handle = handle;
hvx_params.type = BLE_GATT_HVX_NOTIFICATION;
hvx_params.offset = 0;
hvx_params.p_len = &hvx_len;
hvx_params.p_data = p_data;
while (m_tx_in_progress) {
;
}
m_tx_in_progress = true;
uint32_t err_code;
if ((err_code = sd_ble_gatts_hvx(conn_handle, &hvx_params)) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not notify attribute value. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
}
void ble_drv_gap_event_handler_set(mp_obj_t obj, ble_drv_gap_evt_callback_t evt_handler) {
mp_gap_observer = obj;
gap_event_handler = evt_handler;
}
void ble_drv_gatts_event_handler_set(mp_obj_t obj, ble_drv_gatts_evt_callback_t evt_handler) {
mp_gatts_observer = obj;
gatts_event_handler = evt_handler;
}
#if (BLUETOOTH_SD == 130) || (BLUETOOTH_SD == 132)
void ble_drv_gattc_event_handler_set(mp_obj_t obj, ble_drv_gattc_evt_callback_t evt_handler) {
mp_gattc_observer = obj;
gattc_event_handler = evt_handler;
}
void ble_drv_adv_report_handler_set(mp_obj_t obj, ble_drv_adv_evt_callback_t evt_handler) {
mp_adv_observer = obj;
adv_event_handler = evt_handler;
}
void ble_drv_attr_c_read(uint16_t conn_handle, uint16_t handle, mp_obj_t obj, ble_drv_gattc_char_data_callback_t cb) {
mp_gattc_char_data_observer = obj;
gattc_char_data_handle = cb;
uint32_t err_code = sd_ble_gattc_read(conn_handle,
handle,
0);
if (err_code != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not read attribute value. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
while (gattc_char_data_handle != NULL) {
;
}
}
void ble_drv_attr_c_write(uint16_t conn_handle, uint16_t handle, uint16_t len, uint8_t * p_data, bool w_response) {
ble_gattc_write_params_t write_params;
if (w_response) {
write_params.write_op = BLE_GATT_OP_WRITE_REQ;
} else {
write_params.write_op = BLE_GATT_OP_WRITE_CMD;
}
write_params.flags = BLE_GATT_EXEC_WRITE_FLAG_PREPARED_CANCEL;
write_params.handle = handle;
write_params.offset = 0;
write_params.len = len;
write_params.p_value = p_data;
m_write_done = !w_response;
uint32_t err_code = sd_ble_gattc_write(conn_handle, &write_params);
if (err_code != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not write attribute value. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
while (m_write_done != true) {
;
}
}
void ble_drv_scan_start(void) {
SD_TEST_OR_ENABLE();
ble_gap_scan_params_t scan_params;
scan_params.active = 1;
scan_params.interval = MSEC_TO_UNITS(100, UNIT_0_625_MS);
scan_params.window = MSEC_TO_UNITS(100, UNIT_0_625_MS);
scan_params.timeout = 0; // Infinite
#if (BLUETOOTH_SD == 130)
scan_params.selective = 0;
scan_params.p_whitelist = NULL;
#elif (BLUETOOTH_SD == 132 && BLE_API_VERSION == 3)
scan_params.use_whitelist = 0;
#endif
uint32_t err_code;
if ((err_code = sd_ble_gap_scan_start(&scan_params)) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not start scanning. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
}
void ble_drv_scan_stop(void) {
sd_ble_gap_scan_stop();
}
void ble_drv_connect(uint8_t * p_addr, uint8_t addr_type) {
SD_TEST_OR_ENABLE();
ble_gap_scan_params_t scan_params;
scan_params.active = 1;
scan_params.interval = MSEC_TO_UNITS(100, UNIT_0_625_MS);
scan_params.window = MSEC_TO_UNITS(100, UNIT_0_625_MS);
scan_params.timeout = 0; // infinite
#if (BLUETOOTH_SD == 130)
scan_params.selective = 0;
scan_params.p_whitelist = NULL;
#elif (BLUETOOTH_SD == 132 && BLE_API_VERSION == 3)
scan_params.use_whitelist = 0;
#endif
ble_gap_addr_t addr;
memset(&addr, 0, sizeof(addr));
addr.addr_type = addr_type;
memcpy(addr.addr, p_addr, 6);
BLE_DRIVER_LOG("GAP CONNECTING: "HEX2_FMT":"HEX2_FMT":"HEX2_FMT":"HEX2_FMT":"HEX2_FMT":"HEX2_FMT", type: %d\n",
addr.addr[0], addr.addr[1], addr.addr[2], addr.addr[3], addr.addr[4], addr.addr[5], addr.addr_type);
ble_gap_conn_params_t conn_params;
// (void)sd_ble_gap_ppcp_get(&conn_params);
// set connection parameters
memset(&conn_params, 0, sizeof(conn_params));
conn_params.min_conn_interval = BLE_MIN_CONN_INTERVAL;
conn_params.max_conn_interval = BLE_MAX_CONN_INTERVAL;
conn_params.slave_latency = BLE_SLAVE_LATENCY;
conn_params.conn_sup_timeout = BLE_CONN_SUP_TIMEOUT;
uint32_t err_code;
if ((err_code = sd_ble_gap_connect(&addr, &scan_params, &conn_params)) != 0) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OSError,
"Can not connect. status: 0x" HEX2_FMT, (uint16_t)err_code));
}
}
bool ble_drv_discover_services(mp_obj_t obj, uint16_t conn_handle, uint16_t start_handle, ble_drv_disc_add_service_callback_t cb) {
BLE_DRIVER_LOG("Discover primary services. Conn handle: 0x" HEX2_FMT "\n",
conn_handle);
mp_gattc_disc_service_observer = obj;
disc_add_service_handler = cb;
m_primary_service_found = false;
uint32_t err_code;
err_code = sd_ble_gattc_primary_services_discover(conn_handle,
start_handle,
NULL);
if (err_code != 0) {
return false;
}
// busy loop until last service has been iterated
while (disc_add_service_handler != NULL) {
;
}
if (m_primary_service_found) {
return true;
} else {
return false;
}
}
bool ble_drv_discover_characteristic(mp_obj_t obj,
uint16_t conn_handle,
uint16_t start_handle,
uint16_t end_handle,
ble_drv_disc_add_char_callback_t cb) {
BLE_DRIVER_LOG("Discover characteristicts. Conn handle: 0x" HEX2_FMT "\n",
conn_handle);
mp_gattc_disc_char_observer = obj;
disc_add_char_handler = cb;
ble_gattc_handle_range_t handle_range;
handle_range.start_handle = start_handle;
handle_range.end_handle = end_handle;
m_characteristic_found = false;
uint32_t err_code;
err_code = sd_ble_gattc_characteristics_discover(conn_handle, &handle_range);
if (err_code != 0) {
return false;
}
// busy loop until last service has been iterated
while (disc_add_char_handler != NULL) {
;
}
if (m_characteristic_found) {
return true;
} else {
return false;
}
}
void ble_drv_discover_descriptors(void) {
}
#endif
static void ble_evt_handler(ble_evt_t * p_ble_evt) {
// S132 event ranges.
// Common 0x01 -> 0x0F
// GAP 0x10 -> 0x2F
// GATTC 0x30 -> 0x4F
// GATTS 0x50 -> 0x6F
// L2CAP 0x70 -> 0x8F
switch (p_ble_evt->header.evt_id) {
case BLE_GAP_EVT_CONNECTED:
BLE_DRIVER_LOG("GAP CONNECT\n");
m_adv_in_progress = false;
gap_event_handler(mp_gap_observer, p_ble_evt->header.evt_id, p_ble_evt->evt.gap_evt.conn_handle, p_ble_evt->header.evt_len - (2 * sizeof(uint16_t)), NULL);
ble_gap_conn_params_t conn_params;
(void)sd_ble_gap_ppcp_get(&conn_params);
(void)sd_ble_gap_conn_param_update(p_ble_evt->evt.gap_evt.conn_handle, &conn_params);
break;
case BLE_GAP_EVT_DISCONNECTED:
BLE_DRIVER_LOG("GAP DISCONNECT\n");
gap_event_handler(mp_gap_observer, p_ble_evt->header.evt_id, p_ble_evt->evt.gap_evt.conn_handle, p_ble_evt->header.evt_len - (2 * sizeof(uint16_t)), NULL);
break;
case BLE_GATTS_EVT_HVC:
gatts_event_handler(mp_gatts_observer, p_ble_evt->header.evt_id, p_ble_evt->evt.gatts_evt.params.hvc.handle, p_ble_evt->header.evt_len - (2 * sizeof(uint16_t)), NULL);
break;
case BLE_GATTS_EVT_WRITE:
BLE_DRIVER_LOG("GATTS write\n");
uint16_t handle = p_ble_evt->evt.gatts_evt.params.write.handle;
uint16_t data_len = p_ble_evt->evt.gatts_evt.params.write.len;
uint8_t * p_data = &p_ble_evt->evt.gatts_evt.params.write.data[0];
gatts_event_handler(mp_gatts_observer, p_ble_evt->header.evt_id, handle, data_len, p_data);
break;
case BLE_GAP_EVT_CONN_PARAM_UPDATE:
BLE_DRIVER_LOG("GAP CONN PARAM UPDATE\n");
break;
case BLE_GATTS_EVT_SYS_ATTR_MISSING:
// No system attributes have been stored.
(void)sd_ble_gatts_sys_attr_set(p_ble_evt->evt.gatts_evt.conn_handle, NULL, 0, 0);
break;
#if (BLUETOOTH_SD == 132 && BLE_API_VERSION == 3)
case BLE_GATTS_EVT_EXCHANGE_MTU_REQUEST:
BLE_DRIVER_LOG("GATTS EVT EXCHANGE MTU REQUEST\n");
(void)sd_ble_gatts_exchange_mtu_reply(p_ble_evt->evt.gatts_evt.conn_handle, 23); // MAX MTU size
break;
#endif
case BLE_EVT_TX_COMPLETE:
BLE_DRIVER_LOG("BLE EVT TX COMPLETE\n");
m_tx_in_progress = false;
break;
case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
BLE_DRIVER_LOG("BLE EVT SEC PARAMS REQUEST\n");
// pairing not supported
(void)sd_ble_gap_sec_params_reply(p_ble_evt->evt.gatts_evt.conn_handle,
BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP,
NULL, NULL);
break;
#if (BLUETOOTH_SD == 130) || (BLUETOOTH_SD == 132)
case BLE_GAP_EVT_ADV_REPORT:
BLE_DRIVER_LOG("BLE EVT ADV REPORT\n");
ble_drv_adv_data_t adv_data = {
.p_peer_addr = p_ble_evt->evt.gap_evt.params.adv_report.peer_addr.addr,
.addr_type = p_ble_evt->evt.gap_evt.params.adv_report.peer_addr.addr_type,
.is_scan_resp = p_ble_evt->evt.gap_evt.params.adv_report.scan_rsp,
.rssi = p_ble_evt->evt.gap_evt.params.adv_report.rssi,
.data_len = p_ble_evt->evt.gap_evt.params.adv_report.dlen,
.p_data = p_ble_evt->evt.gap_evt.params.adv_report.data,
.adv_type = p_ble_evt->evt.gap_evt.params.adv_report.type
};
// TODO: Fix unsafe callback to possible undefined callback...
adv_event_handler(mp_adv_observer,
p_ble_evt->header.evt_id,
&adv_data);
break;
case BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST:
BLE_DRIVER_LOG("BLE EVT CONN PARAM UPDATE REQUEST\n");
(void)sd_ble_gap_conn_param_update(p_ble_evt->evt.gap_evt.conn_handle,
&p_ble_evt->evt.gap_evt.params.conn_param_update_request.conn_params);
break;
case BLE_GATTC_EVT_PRIM_SRVC_DISC_RSP:
BLE_DRIVER_LOG("BLE EVT PRIMARY SERVICE DISCOVERY RESPONSE\n");
BLE_DRIVER_LOG(">>> service count: %d\n", p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.count);
for (uint16_t i = 0; i < p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.count; i++) {
ble_gattc_service_t * p_service = &p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.services[i];
ble_drv_service_data_t service;
service.uuid_type = p_service->uuid.type;
service.uuid = p_service->uuid.uuid;
service.start_handle = p_service->handle_range.start_handle;
service.end_handle = p_service->handle_range.end_handle;
disc_add_service_handler(mp_gattc_disc_service_observer, &service);
}
if (p_ble_evt->evt.gattc_evt.params.prim_srvc_disc_rsp.count > 0) {
m_primary_service_found = true;
}
// mark end of service discovery
disc_add_service_handler = NULL;
break;
case BLE_GATTC_EVT_CHAR_DISC_RSP:
BLE_DRIVER_LOG("BLE EVT CHAR DISCOVERY RESPONSE\n");
BLE_DRIVER_LOG(">>> characteristic count: %d\n", p_ble_evt->evt.gattc_evt.params.char_disc_rsp.count);
for (uint16_t i = 0; i < p_ble_evt->evt.gattc_evt.params.char_disc_rsp.count; i++) {
ble_gattc_char_t * p_char = &p_ble_evt->evt.gattc_evt.params.char_disc_rsp.chars[i];
ble_drv_char_data_t char_data;
char_data.uuid_type = p_char->uuid.type;
char_data.uuid = p_char->uuid.uuid;
char_data.decl_handle = p_char->handle_decl;
char_data.value_handle = p_char->handle_value;
char_data.props |= (p_char->char_props.broadcast) ? UBLUEPY_PROP_BROADCAST : 0;
char_data.props |= (p_char->char_props.read) ? UBLUEPY_PROP_READ : 0;
char_data.props |= (p_char->char_props.write_wo_resp) ? UBLUEPY_PROP_WRITE_WO_RESP : 0;
char_data.props |= (p_char->char_props.write) ? UBLUEPY_PROP_WRITE : 0;
char_data.props |= (p_char->char_props.notify) ? UBLUEPY_PROP_NOTIFY : 0;
char_data.props |= (p_char->char_props.indicate) ? UBLUEPY_PROP_INDICATE : 0;
#if 0
char_data.props |= (p_char->char_props.auth_signed_wr) ? UBLUEPY_PROP_NOTIFY : 0;
#endif
disc_add_char_handler(mp_gattc_disc_char_observer, &char_data);
}
if (p_ble_evt->evt.gattc_evt.params.char_disc_rsp.count > 0) {
m_characteristic_found = true;
}
// mark end of characteristic discovery
disc_add_char_handler = NULL;
break;
case BLE_GATTC_EVT_READ_RSP:
BLE_DRIVER_LOG("BLE EVT READ RESPONSE, offset: 0x"HEX2_FMT", length: 0x"HEX2_FMT"\n",
p_ble_evt->evt.gattc_evt.params.read_rsp.offset,
p_ble_evt->evt.gattc_evt.params.read_rsp.len);
gattc_char_data_handle(mp_gattc_char_data_observer,
p_ble_evt->evt.gattc_evt.params.read_rsp.len,
p_ble_evt->evt.gattc_evt.params.read_rsp.data);
// mark end of read
gattc_char_data_handle = NULL;
break;
case BLE_GATTC_EVT_WRITE_RSP:
BLE_DRIVER_LOG("BLE EVT WRITE RESPONSE\n");
m_write_done = true;
break;
case BLE_GATTC_EVT_HVX:
BLE_DRIVER_LOG("BLE EVT HVX RESPONSE\n");
break;
#endif
default:
BLE_DRIVER_LOG(">>> unhandled evt: 0x" HEX2_FMT "\n", p_ble_evt->header.evt_id);
break;
}
}
static uint8_t m_ble_evt_buf[sizeof(ble_evt_t) + (GATT_MTU_SIZE_DEFAULT)] __attribute__ ((aligned (4)));
#ifdef NRF51
void SWI2_IRQHandler(void) {
#else
void SWI2_EGU2_IRQHandler(void) {
#endif
uint32_t evt_id;
uint32_t err_code;
do {
err_code = sd_evt_get(&evt_id);
// TODO: handle non ble events
} while (err_code != NRF_ERROR_NOT_FOUND && err_code != NRF_SUCCESS);
uint16_t evt_len = sizeof(m_ble_evt_buf);
do {
err_code = sd_ble_evt_get(m_ble_evt_buf, &evt_len);
ble_evt_handler((ble_evt_t *)m_ble_evt_buf);
} while (err_code != NRF_ERROR_NOT_FOUND && err_code != NRF_SUCCESS);
}
#endif // BLUETOOTH_SD
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