Merge branch 'feature/add_bluetooth_nimble_lightsleep_example_v4.4' into 'release/v4.4'

bt: Added an example of Bluetooth using light sleep(v4.4)

See merge request espressif/esp-idf!23694
This commit is contained in:
Jiang Jiang Jian 2023-06-09 19:20:31 +08:00
commit 7053e483ea
18 changed files with 1312 additions and 2 deletions

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@ -390,7 +390,7 @@ menu "MODEM SLEEP Options"
than other bluetooth low power clock sources.
config BT_CTRL_LPCLK_SEL_EXT_32K_XTAL
bool "External 32kHz crystal"
depends on ESP32C3_RTC_CLK_SRC_EXT_CRYS
depends on (ESP32C3_RTC_CLK_SRC_EXT_CRYS || ESP32S3_RTC_CLK_SRC_EXT_CRYS)
help
External 32kHz crystal has a nominal frequency of 32.768kHz and provides good frequency
stability. If used as Bluetooth low power clock, External 32kHz can support Bluetooth
@ -398,7 +398,7 @@ menu "MODEM SLEEP Options"
config BT_CTRL_LPCLK_SEL_RTC_SLOW
bool "Internal 150kHz RC oscillator"
depends on ESP32C3_RTC_CLK_SRC_INT_RC
depends on (ESP32C3_RTC_CLK_SRC_INT_RC || ESP32S3_RTC_CLK_SRC_INT_RC)
help
Internal 150kHz RC oscillator. The accuracy of this clock is a lot larger than 500ppm which is required
in Bluetooth communication, so don't select this option in scenarios such as BLE connection state.

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@ -0,0 +1,6 @@
# The following lines of boilerplate have to be in your project's
# CMakeLists in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.5)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(power_save)

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@ -0,0 +1,8 @@
#
# This is a project Makefile. It is assumed the directory this Makefile resides in is a
# project subdirectory.
#
PROJECT_NAME := power_save
include $(IDF_PATH)/make/project.mk

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@ -0,0 +1,113 @@
| Supported Targets | ESP32 | ESP32-C3 | ESP32-S3 |
| ----------------- | ----- | -------- | -------- |
Bluetooth Power Save Example
=================================
This example is based on the [bleprph](../bleprph) example to show how to use the bluetooth power save mode.
If the modem sleep mode is enabled, bluetooth will switch periodically between active and sleep.
In sleep state, RF, PHY and BB are turned off in order to reduce power consumption.
This example contains five build configurations. For each configuration, a few configuration options are set:
- `sdkconfig.defaults.esp32`: ESP32 uses 32kHz XTAL as low power clock in light sleep enabled.
- `sdkconfig.defaults.esp32c3`: ESP32C3 uses 32kHz XTAL as low power clock in light sleep enabled.
- `sdkconfig.40m.esp32c3`: ESP32C3 uses main XTAL as low power clock in light sleep enabled.
- `sdkconfig.defaults.esp32s3`: ESP32S3 uses 32kHz XTAL as low power clock in light sleep enabled.
- `sdkconfig.40m.esp32s3`: ESP32S3 uses main XTAL as low power clock in light sleep enabled.
## How to use example
### Hardware Required
This example should be able to run on any commonly available ESP32/ESP32-C3/ESP32-S3 development board.
### Configure the project
```
idf.py menuconfig
```
1. Configure RTC clock source:
- `Component config > Hardware Settings > RTC Clock Config > RTC clock source`
2. Enable power management:
- `Component config > Power Management > [*] Support for power management`
3. Configure FreeRTOS:
- `Component config > FreeRTOS > Kernel`
- `(1000) configTICK_RATE_HZ`
- `[*] configUSE_TICKLESS_IDLE`
- `(3) configEXPECTED_IDLE_TIME_BEFORE_SLEEP`
4. Enable power down MAC and baseband:
- `Component config > PHY > [*] Power down MAC and baseband of Wi-Fi and Bluetooth when PHY is disabled`
5. Enable bluetooth modem sleep:
- `Component config > Bluetooth > Controller Options > MODEM SLEEP Options`
- `[*] Bluetooth modem sleep`
- `[*] Bluetooth Modem sleep Mode 1`
6. Configure bluetooth low power clock:
- `Component config > Bluetooth > Controller Options > MODEM SLEEP Options > Bluetooth modem sleep > Bluetooth Modem sleep Mode 1 > Bluetooth low power clock`
7. Enable power up main XTAL during light sleep:
- `Component config > Bluetooth > Controller Options > MODEM SLEEP Options > [*] power up main XTAL during light sleep`
### Build and Flash
```
idf.py -D SDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.40m.esp32c3" set-target ESP32C3 build
```
* `-D SDKCONFIG_DEFAULTS` select configuration file to be used for creating app sdkconfig.
* `set-target ` Set the chip target to build.
To flash the project and see the output, run:
```
idf.py -p PORT flash monitor
```
(Replace PORT with the name of the serial port to use.)
(To exit the serial monitor, type ``Ctrl-]``.)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
## Example Output
When you run this example, the prints the following at the very begining:
```
I (333) cpu_start: Starting scheduler.
I (347) pm: Frequency switching config: CPU_MAX: 160, APB_MAX: 80, APB_MIN: 40, Light sleep: ENABLED
I (351) sleep: Enable automatic switching of GPIO sleep configuration
I (358) BTDM_INIT: BT controller compile version [f2e5d81]
I (365) BTDM_INIT: Bluetooth will use main XTAL as Bluetooth sleep clock.
I (372) phy_init: phy_version 912,d001756,Jun 2 2022,16:28:07
I (411) system_api: Base MAC address is not set
I (412) system_api: read default base MAC address from EFUSE
I (412) BTDM_INIT: Bluetooth MAC: 7c:df:a1:61:b6:f6
I (419) NimBLE_BLE_PRPH: BLE Host Task Started
I (424) uart: queue free spaces: 8
I (432) NimBLE: GAP procedure initiated: stop advertising.
I (435) NimBLE: Device Address:
I (437) NimBLE: 7c:df:a1:61:b6:f6
I (441) NimBLE:
I (446) NimBLE: GAP procedure initiated: advertise;
I (450) NimBLE: disc_mode=2
I (453) NimBLE: adv_channel_map=0 own_addr_type=0 adv_filter_policy=0 adv_itvl_min=0 adv_itvl_max=0
I (463) NimBLE:
```
## Typical current consumption with management enabled
| | max current | modem sleep | light sleep (main XTAL)| light sleep (32KHz XTAL)|
|-------- | ----------- | ------------ | ---------------------- |------------------------ |
| ESP32 | 231 mA | 14.1 mA | X | 1.9 mA |
| ESP32C3 | 262 mA | 12 mA | 2.3 mA | 140 uA |
| ESP32S3 | 240 mA | 17.9 mA | 3.3 mA | 230 uA |
X: This feature is currently not supported.
## Example Breakdown
- ESP32 does not support the use of main XTAL in light sleep mode, so an external 32kHz crystal is required.

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@ -0,0 +1,7 @@
set(srcs "main.c"
"gatt_svr.c"
"misc.c"
"scli.c")
idf_component_register(SRCS "${srcs}"
INCLUDE_DIRS ".")

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@ -0,0 +1,127 @@
menu "Example Configuration"
choice EXAMPLE_MAX_CPU_FREQ
prompt "Maximum CPU frequency"
default EXAMPLE_MAX_CPU_FREQ_160
depends on PM_ENABLE
help
Maximum CPU frequency to use for dynamic frequency scaling.
config EXAMPLE_MAX_CPU_FREQ_80
bool "80 MHz"
config EXAMPLE_MAX_CPU_FREQ_160
bool "160 MHz"
config EXAMPLE_MAX_CPU_FREQ_240
bool "240 MHz"
depends on IDF_TARGET_ESP32 || IDF_TARGET_ESP32S3
endchoice
config EXAMPLE_MAX_CPU_FREQ_MHZ
int
default 80 if EXAMPLE_MAX_CPU_FREQ_80
default 160 if EXAMPLE_MAX_CPU_FREQ_160
default 240 if EXAMPLE_MAX_CPU_FREQ_240
choice EXAMPLE_MIN_CPU_FREQ
prompt "Minimum CPU frequency"
default EXAMPLE_MIN_CPU_FREQ_40M
depends on PM_ENABLE
help
Minimum CPU frequency to use for dynamic frequency scaling.
Should be set to XTAL frequency or XTAL frequency divided by integer.
config EXAMPLE_MIN_CPU_FREQ_80M
bool "80 MHz"
depends on !(IDF_TARGET_ESP32 && EXAMPLE_MAX_CPU_FREQ_240)
help
ESP32 does not support switching between 240M and 80M.The root cause
is that when switching between 240M and 80M, we need to disable
BBPLL and then re-enable it with a different frequency.Since the
Bluetooth baseband works from PLL frequency, it will temporarily
lose its 80 MHz clock, while the BBPLL is disabled.
config EXAMPLE_MIN_CPU_FREQ_40M
bool "40 MHz (use with 40MHz XTAL)"
depends on XTAL_FREQ_40 || XTAL_FREQ_AUTO
config EXAMPLE_MIN_CPU_FREQ_20M
bool "20 MHz (use with 40MHz XTAL)"
depends on XTAL_FREQ_40 || XTAL_FREQ_AUTO
config EXAMPLE_MIN_CPU_FREQ_10M
bool "10 MHz (use with 40MHz XTAL)"
depends on XTAL_FREQ_40 || XTAL_FREQ_AUTO
endchoice
config EXAMPLE_MIN_CPU_FREQ_MHZ
int
default 80 if EXAMPLE_MIN_CPU_FREQ_80M
default 40 if EXAMPLE_MIN_CPU_FREQ_40M
default 20 if EXAMPLE_MIN_CPU_FREQ_20M
default 10 if EXAMPLE_MIN_CPU_FREQ_10M
config EXAMPLE_ADVERTISE_INTERVAL
int "BLE Advertise interval"
range 0 5000
default 100
help
Wake up interval for BLE advertising. Unit: 1 microsecond.
choice EXAMPLE_USE_IO_TYPE
prompt "I/O Capability"
default BLE_SM_IO_CAP_NO_IO
help
I/O capability of device.
config BLE_SM_IO_CAP_DISP_ONLY
bool "DISPLAY ONLY"
config BLE_SM_IO_CAP_DISP_YES_NO
bool "DISPLAY YESNO"
config BLE_SM_IO_CAP_KEYBOARD_ONLY
bool "KEYBOARD ONLY"
config BLE_SM_IO_CAP_NO_IO
bool "Just works"
config BLE_SM_IO_CAP_KEYBOARD_DISP
bool "Both KEYBOARD & DISPLAY"
endchoice
config EXAMPLE_IO_TYPE
int
default 0 if BLE_SM_IO_CAP_DISP_ONLY
default 1 if BLE_SM_IO_CAP_DISP_YES_NO
default 2 if BLE_SM_IO_CAP_KEYBOARD_ONLY
default 3 if BLE_SM_IO_CAP_NO_IO
default 4 if BLE_SM_IO_CAP_KEYBOARD_DISP
config EXAMPLE_BONDING
bool
default n
prompt "Use Bonding"
help
Use this option to enable/disable bonding.
config EXAMPLE_MITM
bool
default n
prompt "MITM security"
help
Use this option to enable/disable MITM security.
config EXAMPLE_USE_SC
bool
depends on BT_NIMBLE_SM_SC
default n
prompt "Use Secure Connection feature"
help
Use this option to enable/disable Security Manager Secure Connection 4.2 feature.
config EXAMPLE_ENCRYPTION
bool
prompt "Enable Link Encryption"
help
This adds Encrypted Read and Write permissions in the custom GATT server.
config EXAMPLE_RESOLVE_PEER_ADDR
bool
prompt "Enable resolving peer address"
help
Use this option to enable resolving peer's address.
endmenu

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@ -0,0 +1,56 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#ifndef H_BLEPRPH_
#define H_BLEPRPH_
#include <stdbool.h>
#include "nimble/ble.h"
#include "modlog/modlog.h"
#ifdef __cplusplus
extern "C" {
#endif
struct ble_hs_cfg;
struct ble_gatt_register_ctxt;
/** GATT server. */
#define GATT_SVR_SVC_ALERT_UUID 0x1811
#define GATT_SVR_CHR_SUP_NEW_ALERT_CAT_UUID 0x2A47
#define GATT_SVR_CHR_NEW_ALERT 0x2A46
#define GATT_SVR_CHR_SUP_UNR_ALERT_CAT_UUID 0x2A48
#define GATT_SVR_CHR_UNR_ALERT_STAT_UUID 0x2A45
#define GATT_SVR_CHR_ALERT_NOT_CTRL_PT 0x2A44
void gatt_svr_register_cb(struct ble_gatt_register_ctxt *ctxt, void *arg);
int gatt_svr_init(void);
/* Console */
int scli_init(void);
int scli_receive_key(int *key);
/** Misc. */
void print_bytes(const uint8_t *bytes, int len);
void print_addr(const void *addr);
#ifdef __cplusplus
}
#endif
#endif

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@ -0,0 +1,4 @@
#
# "main" pseudo-component makefile.
#
# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)

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@ -0,0 +1,261 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include "host/ble_hs.h"
#include "host/ble_uuid.h"
#include "services/gap/ble_svc_gap.h"
#include "services/gatt/ble_svc_gatt.h"
#include "bleprph.h"
#include "services/ans/ble_svc_ans.h"
/*** Maximum number of characteristics with the notify flag ***/
#define MAX_NOTIFY 5
static const ble_uuid128_t gatt_svr_svc_uuid =
BLE_UUID128_INIT(0x2d, 0x71, 0xa2, 0x59, 0xb4, 0x58, 0xc8, 0x12,
0x99, 0x99, 0x43, 0x95, 0x12, 0x2f, 0x46, 0x59);
/* A characteristic that can be subscribed to */
static uint8_t gatt_svr_chr_val;
static uint16_t gatt_svr_chr_val_handle;
static const ble_uuid128_t gatt_svr_chr_uuid =
BLE_UUID128_INIT(0x00, 0x00, 0x00, 0x00, 0x11, 0x11, 0x11, 0x11,
0x22, 0x22, 0x22, 0x22, 0x33, 0x33, 0x33, 0x33);
/* A custom descriptor */
static uint8_t gatt_svr_dsc_val;
static const ble_uuid128_t gatt_svr_dsc_uuid =
BLE_UUID128_INIT(0x01, 0x01, 0x01, 0x01, 0x12, 0x12, 0x12, 0x12,
0x23, 0x23, 0x23, 0x23, 0x34, 0x34, 0x34, 0x34);
static int
gatt_svc_access(uint16_t conn_handle, uint16_t attr_handle,
struct ble_gatt_access_ctxt *ctxt,
void *arg);
static const struct ble_gatt_svc_def gatt_svr_svcs[] = {
{
/*** Service ***/
.type = BLE_GATT_SVC_TYPE_PRIMARY,
.uuid = &gatt_svr_svc_uuid.u,
.characteristics = (struct ble_gatt_chr_def[])
{ {
/*** This characteristic can be subscribed to by writing 0x00 and 0x01 to the CCCD ***/
.uuid = &gatt_svr_chr_uuid.u,
.access_cb = gatt_svc_access,
#if CONFIG_EXAMPLE_ENCRYPTION
.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_WRITE |
BLE_GATT_CHR_F_READ_ENC | BLE_GATT_CHR_F_WRITE_ENC |
BLE_GATT_CHR_F_NOTIFY | BLE_GATT_CHR_F_INDICATE,
#else
.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_NOTIFY | BLE_GATT_CHR_F_INDICATE,
#endif
.val_handle = &gatt_svr_chr_val_handle,
.descriptors = (struct ble_gatt_dsc_def[])
{ {
.uuid = &gatt_svr_dsc_uuid.u,
#if CONFIG_EXAMPLE_ENCRYPTION
.att_flags = BLE_ATT_F_READ | BLE_ATT_F_READ_ENC,
#else
.att_flags = BLE_ATT_F_READ,
#endif
.access_cb = gatt_svc_access,
}, {
0, /* No more descriptors in this characteristic */
}
},
}, {
0, /* No more characteristics in this service. */
}
},
},
{
0, /* No more services. */
},
};
static int
gatt_svr_write(struct os_mbuf *om, uint16_t min_len, uint16_t max_len,
void *dst, uint16_t *len)
{
uint16_t om_len;
int rc;
om_len = OS_MBUF_PKTLEN(om);
if (om_len < min_len || om_len > max_len) {
return BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN;
}
rc = ble_hs_mbuf_to_flat(om, dst, max_len, len);
if (rc != 0) {
return BLE_ATT_ERR_UNLIKELY;
}
return 0;
}
/**
* Access callback whenever a characteristic/descriptor is read or written to.
* Here reads and writes need to be handled.
* ctxt->op tells weather the operation is read or write and
* weather it is on a characteristic or descriptor,
* ctxt->dsc->uuid tells which characteristic/descriptor is accessed.
* attr_handle give the value handle of the attribute being accessed.
* Accordingly do:
* Append the value to ctxt->om if the operation is READ
* Write ctxt->om to the value if the operation is WRITE
**/
static int
gatt_svc_access(uint16_t conn_handle, uint16_t attr_handle,
struct ble_gatt_access_ctxt *ctxt, void *arg)
{
const ble_uuid_t *uuid;
int rc;
switch (ctxt->op) {
case BLE_GATT_ACCESS_OP_READ_CHR:
if (conn_handle != BLE_HS_CONN_HANDLE_NONE) {
MODLOG_DFLT(INFO, "Characteristic read; conn_handle=%d attr_handle=%d\n",
conn_handle, attr_handle);
} else {
MODLOG_DFLT(INFO, "Characteristic read by NimBLE stack; attr_handle=%d\n",
attr_handle);
}
uuid = ctxt->chr->uuid;
if (attr_handle == gatt_svr_chr_val_handle) {
rc = os_mbuf_append(ctxt->om,
&gatt_svr_chr_val,
sizeof(gatt_svr_chr_val));
return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
}
goto unknown;
case BLE_GATT_ACCESS_OP_WRITE_CHR:
if (conn_handle != BLE_HS_CONN_HANDLE_NONE) {
MODLOG_DFLT(INFO, "Characteristic write; conn_handle=%d attr_handle=%d",
conn_handle, attr_handle);
} else {
MODLOG_DFLT(INFO, "Characteristic write by NimBLE stack; attr_handle=%d",
attr_handle);
}
uuid = ctxt->chr->uuid;
if (attr_handle == gatt_svr_chr_val_handle) {
rc = gatt_svr_write(ctxt->om,
sizeof(gatt_svr_chr_val),
sizeof(gatt_svr_chr_val),
&gatt_svr_chr_val, NULL);
ble_gatts_chr_updated(attr_handle);
MODLOG_DFLT(INFO, "Notification/Indication scheduled for "
"all subscribed peers.\n");
return rc;
}
goto unknown;
case BLE_GATT_ACCESS_OP_READ_DSC:
if (conn_handle != BLE_HS_CONN_HANDLE_NONE) {
MODLOG_DFLT(INFO, "Descriptor read; conn_handle=%d attr_handle=%d\n",
conn_handle, attr_handle);
} else {
MODLOG_DFLT(INFO, "Descriptor read by NimBLE stack; attr_handle=%d\n",
attr_handle);
}
uuid = ctxt->dsc->uuid;
if (ble_uuid_cmp(uuid, &gatt_svr_dsc_uuid.u) == 0) {
rc = os_mbuf_append(ctxt->om,
&gatt_svr_dsc_val,
sizeof(gatt_svr_chr_val));
return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
}
goto unknown;
case BLE_GATT_ACCESS_OP_WRITE_DSC:
goto unknown;
default:
goto unknown;
}
unknown:
/* Unknown characteristic/descriptor;
* The NimBLE host should not have called this function;
*/
assert(0);
return BLE_ATT_ERR_UNLIKELY;
}
void
gatt_svr_register_cb(struct ble_gatt_register_ctxt *ctxt, void *arg)
{
char buf[BLE_UUID_STR_LEN];
switch (ctxt->op) {
case BLE_GATT_REGISTER_OP_SVC:
MODLOG_DFLT(DEBUG, "registered service %s with handle=%d\n",
ble_uuid_to_str(ctxt->svc.svc_def->uuid, buf),
ctxt->svc.handle);
break;
case BLE_GATT_REGISTER_OP_CHR:
MODLOG_DFLT(DEBUG, "registering characteristic %s with "
"def_handle=%d val_handle=%d\n",
ble_uuid_to_str(ctxt->chr.chr_def->uuid, buf),
ctxt->chr.def_handle,
ctxt->chr.val_handle);
break;
case BLE_GATT_REGISTER_OP_DSC:
MODLOG_DFLT(DEBUG, "registering descriptor %s with handle=%d\n",
ble_uuid_to_str(ctxt->dsc.dsc_def->uuid, buf),
ctxt->dsc.handle);
break;
default:
assert(0);
break;
}
}
int
gatt_svr_init(void)
{
int rc;
ble_svc_gap_init();
ble_svc_gatt_init();
ble_svc_ans_init();
rc = ble_gatts_count_cfg(gatt_svr_svcs);
if (rc != 0) {
return rc;
}
rc = ble_gatts_add_svcs(gatt_svr_svcs);
if (rc != 0) {
return rc;
}
/* Setting a value for the read-only descriptor */
gatt_svr_dsc_val = 0x99;
return 0;
}

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@ -0,0 +1,436 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "esp_log.h"
#include "nvs_flash.h"
/* power management */
#include "esp_pm.h"
/* BLE */
#include "esp_nimble_hci.h"
#include "nimble/nimble_port.h"
#include "nimble/nimble_port_freertos.h"
#include "host/ble_hs.h"
#include "host/util/util.h"
#include "console/console.h"
#include "services/gap/ble_svc_gap.h"
#include "bleprph.h"
#include "driver/gpio.h"
static const char *tag = "NimBLE_BLE_PRPH";
static int bleprph_gap_event(struct ble_gap_event *event, void *arg);
static uint8_t own_addr_type;
void ble_store_config_init(void);
/**
* Logs information about a connection to the console.
*/
static void
bleprph_print_conn_desc(struct ble_gap_conn_desc *desc)
{
MODLOG_DFLT(INFO, "handle=%d our_ota_addr_type=%d our_ota_addr=",
desc->conn_handle, desc->our_ota_addr.type);
print_addr(desc->our_ota_addr.val);
MODLOG_DFLT(INFO, " our_id_addr_type=%d our_id_addr=",
desc->our_id_addr.type);
print_addr(desc->our_id_addr.val);
MODLOG_DFLT(INFO, " peer_ota_addr_type=%d peer_ota_addr=",
desc->peer_ota_addr.type);
print_addr(desc->peer_ota_addr.val);
MODLOG_DFLT(INFO, " peer_id_addr_type=%d peer_id_addr=",
desc->peer_id_addr.type);
print_addr(desc->peer_id_addr.val);
MODLOG_DFLT(INFO, " conn_itvl=%d conn_latency=%d supervision_timeout=%d "
"encrypted=%d authenticated=%d bonded=%d\n",
desc->conn_itvl, desc->conn_latency,
desc->supervision_timeout,
desc->sec_state.encrypted,
desc->sec_state.authenticated,
desc->sec_state.bonded);
}
/**
* Enables advertising with the following parameters:
* o General discoverable mode.
* o Undirected connectable mode.
*/
static void
bleprph_advertise(void)
{
struct ble_gap_adv_params adv_params;
struct ble_hs_adv_fields fields;
const char *name;
int rc;
/**
* Set the advertisement data included in our advertisements:
* o Flags (indicates advertisement type and other general info).
* o Advertising tx power.
* o Device name.
* o 16-bit service UUIDs (alert notifications).
*/
memset(&fields, 0, sizeof fields);
/* Advertise two flags:
* o Discoverability in forthcoming advertisement (general)
* o BLE-only (BR/EDR unsupported).
*/
fields.flags = BLE_HS_ADV_F_DISC_GEN |
BLE_HS_ADV_F_BREDR_UNSUP;
/* Indicate that the TX power level field should be included; have the
* stack fill this value automatically. This is done by assigning the
* special value BLE_HS_ADV_TX_PWR_LVL_AUTO.
*/
fields.tx_pwr_lvl_is_present = 1;
fields.tx_pwr_lvl = BLE_HS_ADV_TX_PWR_LVL_AUTO;
name = ble_svc_gap_device_name();
fields.name = (uint8_t *)name;
fields.name_len = strlen(name);
fields.name_is_complete = 1;
fields.uuids16 = (ble_uuid16_t[]) {
BLE_UUID16_INIT(GATT_SVR_SVC_ALERT_UUID)
};
fields.num_uuids16 = 1;
fields.uuids16_is_complete = 1;
rc = ble_gap_adv_set_fields(&fields);
if (rc != 0) {
MODLOG_DFLT(ERROR, "error setting advertisement data; rc=%d\n", rc);
return;
}
/* Begin advertising. */
memset(&adv_params, 0, sizeof adv_params);
adv_params.conn_mode = BLE_GAP_CONN_MODE_UND;
adv_params.disc_mode = BLE_GAP_DISC_MODE_GEN;
adv_params.itvl_min = (CONFIG_EXAMPLE_ADVERTISE_INTERVAL*1000/625);
adv_params.itvl_max = (CONFIG_EXAMPLE_ADVERTISE_INTERVAL*1000/625);
rc = ble_gap_adv_start(own_addr_type, NULL, BLE_HS_FOREVER,
&adv_params, bleprph_gap_event, NULL);
if (rc != 0) {
MODLOG_DFLT(ERROR, "error enabling advertisement; rc=%d\n", rc);
return;
}
}
/**
* The nimble host executes this callback when a GAP event occurs. The
* application associates a GAP event callback with each connection that forms.
* bleprph uses the same callback for all connections.
*
* @param event The type of event being signalled.
* @param ctxt Various information pertaining to the event.
* @param arg Application-specified argument; unused by
* bleprph.
*
* @return 0 if the application successfully handled the
* event; nonzero on failure. The semantics
* of the return code is specific to the
* particular GAP event being signalled.
*/
static int
bleprph_gap_event(struct ble_gap_event *event, void *arg)
{
struct ble_gap_conn_desc desc;
int rc;
switch (event->type) {
case BLE_GAP_EVENT_CONNECT:
/* A new connection was established or a connection attempt failed. */
MODLOG_DFLT(INFO, "connection %s; status=%d ",
event->connect.status == 0 ? "established" : "failed",
event->connect.status);
if (event->connect.status == 0) {
rc = ble_gap_conn_find(event->connect.conn_handle, &desc);
assert(rc == 0);
bleprph_print_conn_desc(&desc);
}
MODLOG_DFLT(INFO, "\n");
if (event->connect.status != 0) {
/* Connection failed; resume advertising. */
bleprph_advertise();
}
return 0;
case BLE_GAP_EVENT_DISCONNECT:
MODLOG_DFLT(INFO, "disconnect; reason=%d ", event->disconnect.reason);
bleprph_print_conn_desc(&event->disconnect.conn);
MODLOG_DFLT(INFO, "\n");
/* Connection terminated; resume advertising. */
bleprph_advertise();
return 0;
case BLE_GAP_EVENT_CONN_UPDATE:
/* The central has updated the connection parameters. */
MODLOG_DFLT(INFO, "connection updated; status=%d ",
event->conn_update.status);
rc = ble_gap_conn_find(event->conn_update.conn_handle, &desc);
assert(rc == 0);
bleprph_print_conn_desc(&desc);
MODLOG_DFLT(INFO, "\n");
return 0;
case BLE_GAP_EVENT_ADV_COMPLETE:
MODLOG_DFLT(INFO, "advertise complete; reason=%d",
event->adv_complete.reason);
bleprph_advertise();
return 0;
case BLE_GAP_EVENT_ENC_CHANGE:
/* Encryption has been enabled or disabled for this connection. */
MODLOG_DFLT(INFO, "encryption change event; status=%d ",
event->enc_change.status);
rc = ble_gap_conn_find(event->enc_change.conn_handle, &desc);
assert(rc == 0);
bleprph_print_conn_desc(&desc);
MODLOG_DFLT(INFO, "\n");
return 0;
case BLE_GAP_EVENT_NOTIFY_TX:
MODLOG_DFLT(INFO, "notify_tx event; conn_handle=%d attr_handle=%d "
"status=%d is_indication=%d",
event->notify_tx.conn_handle,
event->notify_tx.attr_handle,
event->notify_tx.status,
event->notify_tx.indication);
return 0;
case BLE_GAP_EVENT_SUBSCRIBE:
MODLOG_DFLT(INFO, "subscribe event; conn_handle=%d attr_handle=%d "
"reason=%d prevn=%d curn=%d previ=%d curi=%d\n",
event->subscribe.conn_handle,
event->subscribe.attr_handle,
event->subscribe.reason,
event->subscribe.prev_notify,
event->subscribe.cur_notify,
event->subscribe.prev_indicate,
event->subscribe.cur_indicate);
return 0;
case BLE_GAP_EVENT_MTU:
MODLOG_DFLT(INFO, "mtu update event; conn_handle=%d cid=%d mtu=%d\n",
event->mtu.conn_handle,
event->mtu.channel_id,
event->mtu.value);
return 0;
case BLE_GAP_EVENT_REPEAT_PAIRING:
/* We already have a bond with the peer, but it is attempting to
* establish a new secure link. This app sacrifices security for
* convenience: just throw away the old bond and accept the new link.
*/
/* Delete the old bond. */
rc = ble_gap_conn_find(event->repeat_pairing.conn_handle, &desc);
assert(rc == 0);
ble_store_util_delete_peer(&desc.peer_id_addr);
/* Return BLE_GAP_REPEAT_PAIRING_RETRY to indicate that the host should
* continue with the pairing operation.
*/
return BLE_GAP_REPEAT_PAIRING_RETRY;
case BLE_GAP_EVENT_PASSKEY_ACTION:
ESP_LOGI(tag, "PASSKEY_ACTION_EVENT started \n");
struct ble_sm_io pkey = {0};
int key = 0;
if (event->passkey.params.action == BLE_SM_IOACT_DISP) {
pkey.action = event->passkey.params.action;
pkey.passkey = 123456; // This is the passkey to be entered on peer
ESP_LOGI(tag, "Enter passkey %d on the peer side", pkey.passkey);
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
ESP_LOGI(tag, "ble_sm_inject_io result: %d\n", rc);
} else if (event->passkey.params.action == BLE_SM_IOACT_NUMCMP) {
ESP_LOGI(tag, "Passkey on device's display: %d", event->passkey.params.numcmp);
ESP_LOGI(tag, "Accept or reject the passkey through console in this format -> key Y or key N");
pkey.action = event->passkey.params.action;
if (scli_receive_key(&key)) {
pkey.numcmp_accept = key;
} else {
pkey.numcmp_accept = 0;
ESP_LOGE(tag, "Timeout! Rejecting the key");
}
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
ESP_LOGI(tag, "ble_sm_inject_io result: %d\n", rc);
} else if (event->passkey.params.action == BLE_SM_IOACT_OOB) {
static uint8_t tem_oob[16] = {0};
pkey.action = event->passkey.params.action;
for (int i = 0; i < 16; i++) {
pkey.oob[i] = tem_oob[i];
}
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
ESP_LOGI(tag, "ble_sm_inject_io result: %d\n", rc);
} else if (event->passkey.params.action == BLE_SM_IOACT_INPUT) {
ESP_LOGI(tag, "Enter the passkey through console in this format-> key 123456");
pkey.action = event->passkey.params.action;
if (scli_receive_key(&key)) {
pkey.passkey = key;
} else {
pkey.passkey = 0;
ESP_LOGE(tag, "Timeout! Passing 0 as the key");
}
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
ESP_LOGI(tag, "ble_sm_inject_io result: %d\n", rc);
}
return 0;
}
return 0;
}
static void
bleprph_on_reset(int reason)
{
MODLOG_DFLT(ERROR, "Resetting state; reason=%d\n", reason);
}
static void
bleprph_on_sync(void)
{
int rc;
rc = ble_hs_util_ensure_addr(0);
assert(rc == 0);
/* Figure out address to use while advertising (no privacy for now) */
rc = ble_hs_id_infer_auto(0, &own_addr_type);
if (rc != 0) {
MODLOG_DFLT(ERROR, "error determining address type; rc=%d\n", rc);
return;
}
/* Printing ADDR */
uint8_t addr_val[6] = {0};
rc = ble_hs_id_copy_addr(own_addr_type, addr_val, NULL);
MODLOG_DFLT(INFO, "Device Address: ");
print_addr(addr_val);
MODLOG_DFLT(INFO, "\n");
/* Begin advertising. */
bleprph_advertise();
}
void bleprph_host_task(void *param)
{
ESP_LOGI(tag, "BLE Host Task Started");
/* This function will return only when nimble_port_stop() is executed */
nimble_port_run();
nimble_port_freertos_deinit();
}
void
app_main(void)
{
int rc;
/* Initialize NVS — it is used to store PHY calibration data */
esp_err_t ret = nvs_flash_init();
if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
ESP_ERROR_CHECK(nvs_flash_erase());
ret = nvs_flash_init();
}
ESP_ERROR_CHECK(ret);
#if CONFIG_PM_ENABLE
// Configure dynamic frequency scaling:
// maximum and minimum frequencies are set in sdkconfig,
// automatic light sleep is enabled if tickless idle support is enabled.
#if CONFIG_IDF_TARGET_ESP32
esp_pm_config_esp32_t pm_config = {
#elif CONFIG_IDF_TARGET_ESP32C3
esp_pm_config_esp32c3_t pm_config = {
#elif CONFIG_IDF_TARGET_ESP32S3
esp_pm_config_esp32s3_t pm_config = {
#endif
.max_freq_mhz = CONFIG_EXAMPLE_MAX_CPU_FREQ_MHZ,
.min_freq_mhz = CONFIG_EXAMPLE_MIN_CPU_FREQ_MHZ,
#if CONFIG_FREERTOS_USE_TICKLESS_IDLE
.light_sleep_enable = true
#endif
};
ESP_ERROR_CHECK( esp_pm_configure(&pm_config) );
#endif // CONFIG_PM_ENABLE
ESP_ERROR_CHECK(esp_nimble_hci_and_controller_init());
nimble_port_init();
/* Initialize the NimBLE host configuration. */
ble_hs_cfg.reset_cb = bleprph_on_reset;
ble_hs_cfg.sync_cb = bleprph_on_sync;
ble_hs_cfg.gatts_register_cb = gatt_svr_register_cb;
ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
ble_hs_cfg.sm_io_cap = CONFIG_EXAMPLE_IO_TYPE;
#ifdef CONFIG_EXAMPLE_BONDING
ble_hs_cfg.sm_bonding = 1;
/* Enable the appropriate bit masks to make sure the keys
* that are needed are exchanged
*/
ble_hs_cfg.sm_our_key_dist |= BLE_SM_PAIR_KEY_DIST_ENC;
ble_hs_cfg.sm_their_key_dist |= BLE_SM_PAIR_KEY_DIST_ENC;
#endif
#ifdef CONFIG_EXAMPLE_MITM
ble_hs_cfg.sm_mitm = 1;
#endif
#ifdef CONFIG_EXAMPLE_USE_SC
ble_hs_cfg.sm_sc = 1;
#else
ble_hs_cfg.sm_sc = 0;
#endif
#ifdef CONFIG_EXAMPLE_RESOLVE_PEER_ADDR
/* Stores the IRK */
ble_hs_cfg.sm_our_key_dist |= BLE_SM_PAIR_KEY_DIST_ID;
ble_hs_cfg.sm_their_key_dist |= BLE_SM_PAIR_KEY_DIST_ID;
#endif
rc = gatt_svr_init();
assert(rc == 0);
/* Set the default device name. */
rc = ble_svc_gap_device_name_set("nimble-bleprph");
assert(rc == 0);
/* XXX Need to have template for store */
ble_store_config_init();
nimble_port_freertos_init(bleprph_host_task);
#if CONFIG_IDF_TARGET_ESP32C3
gpio_sleep_set_direction(20, GPIO_MODE_INPUT);
gpio_sleep_set_pull_mode(20, GPIO_PULLUP_ONLY);
#elif CONFIG_IDF_TARGET_ESP32S3
gpio_sleep_set_direction(44, GPIO_MODE_INPUT);
gpio_sleep_set_pull_mode(44, GPIO_PULLUP_ONLY);
#endif
/* Initialize command line interface to accept input from user */
rc = scli_init();
if (rc != ESP_OK) {
ESP_LOGE(tag, "scli_init() failed");
}
}

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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "bleprph.h"
/**
* Utility function to log an array of bytes.
*/
void
print_bytes(const uint8_t *bytes, int len)
{
int i;
for (i = 0; i < len; i++) {
MODLOG_DFLT(INFO, "%s0x%02x", i != 0 ? ":" : "", bytes[i]);
}
}
void
print_addr(const void *addr)
{
const uint8_t *u8p;
u8p = addr;
MODLOG_DFLT(INFO, "%02x:%02x:%02x:%02x:%02x:%02x",
u8p[5], u8p[4], u8p[3], u8p[2], u8p[1], u8p[0]);
}

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/*
* Copyright 2019 Espressif Systems (Shanghai) PTE LTD
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include <stdio.h>
#include <ctype.h>
#include "esp_log.h"
#include <string.h>
#include <esp_log.h>
#include <esp_console.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <freertos/queue.h>
#include <driver/uart.h>
#include "bleprph.h"
#define BLE_RX_TIMEOUT (30000 / portTICK_PERIOD_MS)
static TaskHandle_t cli_task;
static QueueHandle_t cli_handle;
static int stop;
static int enter_passkey_handler(int argc, char *argv[])
{
int key;
char pkey[8];
int num;
if (argc != 2) {
return -1;
}
sscanf(argv[1], "%s", pkey);
ESP_LOGI("You entered", "%s %s", argv[0], argv[1]);
num = pkey[0];
if (isalpha(num)) {
if ((strcasecmp(pkey, "Y") == 0) || (strcasecmp(pkey, "Yes") == 0)) {
key = 1;
xQueueSend(cli_handle, &key, 0);
} else {
key = 0;
xQueueSend(cli_handle, &key, 0);
}
} else {
sscanf(pkey, "%d", &key);
xQueueSend(cli_handle, &key, 0);
}
return 0;
}
int scli_receive_key(int *console_key)
{
return xQueueReceive(cli_handle, console_key, BLE_RX_TIMEOUT);
}
static esp_console_cmd_t cmds[] = {
{
.command = "key",
.help = "",
.func = enter_passkey_handler,
},
};
static int ble_register_cli(void)
{
int cmds_num = sizeof(cmds) / sizeof(esp_console_cmd_t);
int i;
for (i = 0; i < cmds_num; i++) {
esp_console_cmd_register(&cmds[i]);
}
return 0;
}
static void scli_task(void *arg)
{
int uart_num = (int) arg;
uint8_t linebuf[256];
int i, cmd_ret;
esp_err_t ret;
QueueHandle_t uart_queue;
uart_event_t event;
uart_driver_install(uart_num, 256, 0, 8, &uart_queue, 0);
/* Initialize the console */
esp_console_config_t console_config = {
.max_cmdline_args = 8,
.max_cmdline_length = 256,
};
esp_console_init(&console_config);
while (!stop) {
i = 0;
memset(linebuf, 0, sizeof(linebuf));
do {
ret = xQueueReceive(uart_queue, (void * )&event, (portTickType)portMAX_DELAY);
if (ret != pdPASS) {
if (stop == 1) {
break;
} else {
continue;
}
}
if (event.type == UART_DATA) {
while (uart_read_bytes(uart_num, (uint8_t *) &linebuf[i], 1, 0)) {
if (linebuf[i] == '\r') {
uart_write_bytes(uart_num, "\r\n", 2);
} else {
uart_write_bytes(uart_num, (char *) &linebuf[i], 1);
}
i++;
}
}
} while ((i < 255) && linebuf[i - 1] != '\r');
if (stop) {
break;
}
/* Remove the truncating \r\n */
linebuf[strlen((char *)linebuf) - 1] = '\0';
ret = esp_console_run((char *) linebuf, &cmd_ret);
if (ret < 0) {
break;
}
}
vTaskDelete(NULL);
}
int scli_init(void)
{
/* Register CLI "key <value>" to accept input from user during pairing */
ble_register_cli();
xTaskCreate(scli_task, "scli_cli", 4096, (void *) 0, 3, &cli_task);
if (cli_task == NULL) {
return ESP_FAIL;
}
cli_handle = xQueueCreate( 1, sizeof(int) );
if (cli_handle == NULL) {
return ESP_FAIL;
}
return ESP_OK;
}

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CONFIG_IDF_TARGET="esp32c3"
# MODEM SLEEP Options
CONFIG_BT_CTRL_MODEM_SLEEP=y
CONFIG_BT_CTRL_MODEM_SLEEP_MODE_1=y
# Bluetooth low power clock
CONFIG_BT_CTRL_LPCLK_SEL_MAIN_XTAL=y
# Power up main XTAL during light sleep
CONFIG_BT_CTRL_MAIN_XTAL_PU_DURING_LIGHT_SLEEP=y
# Enable power down of MAC and baseband in light sleep mode
CONFIG_ESP_PHY_MAC_BB_PD=y

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CONFIG_IDF_TARGET="esp32s3"
# MODEM SLEEP Options
CONFIG_BT_CTRL_MODEM_SLEEP=y
CONFIG_BT_CTRL_MODEM_SLEEP_MODE_1=y
# Bluetooth low power clock
CONFIG_BT_CTRL_LPCLK_SEL_MAIN_XTAL=y
# Power up main XTAL during light sleep
CONFIG_BT_CTRL_MAIN_XTAL_PU_DURING_LIGHT_SLEEP=y
# Run FreeRTOS only on first core
CONFIG_FREERTOS_UNICORE=y
# Enable power down of MAC and baseband in light sleep mode
CONFIG_ESP_PHY_MAC_BB_PD=y

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# Override some defaults so BT stack is enabled
# in this example
#
# BT config
#
CONFIG_BT_ENABLED=y
CONFIG_BTDM_CTRL_MODE_BLE_ONLY=y
CONFIG_BTDM_CTRL_MODE_BR_EDR_ONLY=n
CONFIG_BTDM_CTRL_MODE_BTDM=n
CONFIG_BT_BLUEDROID_ENABLED=n
CONFIG_BT_NIMBLE_ENABLED=y
# Enable support for power management
CONFIG_PM_ENABLE=y
# Enable tickless idle mode
CONFIG_FREERTOS_USE_TICKLESS_IDLE=y
# Set the tick rate at which FreeRTOS does pre-emptive context switching.
CONFIG_FREERTOS_HZ=1000
# Minimum number of ticks to enter sleep mode for
CONFIG_FREERTOS_IDLE_TIME_BEFORE_SLEEP=3

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CONFIG_IDF_TARGET="esp32"
# MODEM SLEEP Options
CONFIG_BTDM_CTRL_MODEM_SLEEP=y
CONFIG_BTDM_CTRL_MODEM_SLEEP_MODE_ORIG=y
# Bluetooth low power clock
CONFIG_BTDM_CTRL_LPCLK_SEL_EXT_32K_XTAL=y
# RTC clock source
CONFIG_ESP32_RTC_CLK_SRC_EXT_CRYS=y
# Run FreeRTOS only on first core
CONFIG_FREERTOS_UNICORE=y

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CONFIG_IDF_TARGET="esp32c3"
# MODEM SLEEP Options
CONFIG_BT_CTRL_MODEM_SLEEP=y
CONFIG_BT_CTRL_MODEM_SLEEP_MODE_1=y
# Bluetooth low power clock
CONFIG_BT_CTRL_LPCLK_SEL_EXT_32K_XTAL=y
# RTC clock source
CONFIG_ESP32C3_RTC_CLK_SRC_EXT_CRYS=y
# Enable power down of MAC and baseband in light sleep mode
CONFIG_ESP_PHY_MAC_BB_PD=y

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CONFIG_IDF_TARGET="esp32s3"
# MODEM SLEEP Options
CONFIG_BT_CTRL_MODEM_SLEEP=y
CONFIG_BT_CTRL_MODEM_SLEEP_MODE_1=y
# Bluetooth low power clock
CONFIG_BT_CTRL_LPCLK_SEL_EXT_32K_XTAL=y
# RTC clock source
CONFIG_ESP32S3_RTC_CLK_SRC_EXT_CRYS=y
# Run FreeRTOS only on first core
CONFIG_FREERTOS_UNICORE=y
# Enable power down of MAC and baseband in light sleep mode
CONFIG_ESP_PHY_MAC_BB_PD=y