Compile errors involving #include "syscfg/syscfg.h"

[4wheeljive]

I am trying to get BLE going on an ESP32-P4-WIFI6. I am currently trying to do this using the pioarduino IDE extension in VSCode. When I try to compile, I am getting a number of errors like the following:

In file included from .pio/libdeps/esp32-p4/esp-nimble-cpp/src/NimBLE2904.cpp:18:
.pio/libdeps/esp32-p4/esp-nimble-cpp/src/NimBLE2904.h:21:10: fatal error: syscfg/syscfg.h: No such file or directory
21 | #include "syscfg/syscfg.h"

Here what's in my current platformio.ini:

[env:esp32-p4]
platform = https://github.com/pioarduino/platform-espressif32/releases/download/54.03.20/platform-espressif32.zip
board = esp32-p4
framework = arduino
lib_deps = 
	C:\Users\Jeff\Downloads\FastLED-70dd78f54bb5161b473a656c0b07048f4191a44a.zip
	h2zero/esp-nimble-cpp@^2.3.2
	bblanchon/ArduinoJson@^7.4.2

Here are what I believe are the relevant excerpts from my dependencies.lock file:

h2zero/esp-nimble-cpp:
    component_hash: b018d62032c3ba6386ea2aa6d4a1638408a9210b1d0529b1eb194a52f3a3fc2c
    dependencies:
    - name: espressif/esp_hosted
      registry_url: https://components.espressif.com
      require: private
      rules:
      - if: target in [esp32p4]
      version: '*'
    - name: espressif/esp_wifi_remote
      registry_url: https://components.espressif.com
      require: private
      rules:
      - if: target in [esp32p4]
      version: '>=0.5.3'
    - name: idf
      require: private
      rules:
      - if: target in [esp32p4]
      version: '>=5.3.0'
    source:
      registry_url: https://components.espressif.com/
      type: service
    version: 2.3.2
  idf:
    source:
      type: idf
    version: 5.5.1

direct_dependencies:
- espressif/arduino-esp32
- espressif/esp_hosted
- espressif/esp_wifi_remote
- h2zero/esp-nimble-cpp
- idf
manifest_hash: cc5e0c49b6a137a6be3c2cafb4da0f9b7764dd928f5895483fa40460c61a7b8a
target: esp32p4
version: 2.0.0	

Here's what's in my sdkconfig.defaults file:

CONFIG_IDF_TARGET="esp32p4"
CONFIG_ESPTOOLPY_FLASHSIZE_16MB=y

# Override some defaults so BT stack is enabled
# in this example

#
# BT config
#
CONFIG_BT_CONTROLLER_DISABLED=y
CONFIG_BT_BLUEDROID_ENABLED=n
CONFIG_BT_NIMBLE_TRANSPORT_UART=n
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

#
# Enable ESP Hosted BT
# Used as VHCI transport between BT Host and Controller
#
CONFIG_ESP_ENABLE_BT=y
CONFIG_ESP_WIFI_REMOTE_LIBRARY_HOSTED=y

CONFIG_COMPILER_CXX_EXCEPTIONS=y
CONFIG_BT_NIMBLE_ENABLED=y
CONFIG_BT_NIMBLE_TRANSPORT_UART=n
CONFIG_HTTPD_MAX_REQ_HDR_LEN=800
CONFIG_HTTPD_WS_SUPPORT=y
CONFIG_ESP_WIFI_EXTRA_IRAM_OPT=n
CONFIG_ESP_WIFI_SLP_IRAM_OPT=n
CONFIG_FATFS_LFN_HEAP=y
CONFIG_FREERTOS_HZ=1000
CONFIG_ESP_HOSTED_ENABLE_BT_NIMBLE=y
CONFIG_SLAVE_IDF_TARGET_ESP32C6=y

Here's what's in my project/CMakeLists.txt file:

cmake_minimum_required(VERSION 3.5)

include($ENV{IDF_PATH}/tools/cmake/project.cmake)
add_compile_definitions(ARDUINO_ARCH_ESP32=1)
project(P4-WIFI6-Test2)

I've spent about 3 hours searching online and trying different approaches and have gotten nowhere. I would greatly any assistance anyone could provide. Thank you!

[4wheeljive]

I just realized something (I think). This repo (esp-nimble-cpp) is to enable arduino-style c++ coding while using the ESP-IDF framework. I thought that's sort of what happening with the pioarduino IDE, but I don't think that's the case if I'm only using the arduino framework. So I'm now trying to get things working using the NimBLE-Arduino library. I'm having issues with that too, but I think I need to address that elsewhere. Thank you.

[4wheeljive]

Well maybe I spoke too soon. After another couple of hours trying to get NimBLE-Arduino working, I started thinking that maybe I'd have to use the ESP-IDF. (I've received conflicting information about whether ESP-IDF is required for ESP-Hosted, but I wondered if that's why I couldn't get NimBLE-Arduino to work.) So I went back to trying esp-nimble-cpp in the ESP-IDF, and I'm getting "syscfg/syscfg.h: No such file or directory" errors again.

Many of the files in the esp-nimble-cpp src folder have #include "syscfg/syscfg.h", which I don't think exists in this repo. Many of the files also include calls to things like #include "nimble/nimble/host/include/host/ble_hs_adv.h" which I also don't see in the esp-nimble-cpp. Am I just doing something completely wrong?

Thank you.

[h2zero]

The nimble stack is separate in this repo (included with esp-idf) , the problem you are having is the nimble dependency is missing in the platformio build for some reason. I haven't tried this with the P4 so I'm not sure what is required to fix it, I would suggest just using esp-idf and the vscode extension for your configuration unless there is a particular reason you need platformio.

[3846648]

I encountered the same issue in the custom component of ESPHome, with the following error message:

INFO ESPHome 2025.10.1
INFO Reading configuration TEST.yaml...
INFO Generating C++ source...
INFO Compiling app...
Processing test (board: esp32-c3-devkitm-1; framework: espidf; platform: https://github.com/pioarduino/platform-espressif32/releases/download/54.03.21-2/platform-espressif32.zip)

INFO Package configuration completed successfully
INFO Package configuration completed successfully
HARDWARE: ESP32C3 160MHz, 320KB RAM, 4MB Flash

• framework-espidf @ 3.50402.0 (5.4.2)
• tool-cmake @ 3.30.2
• tool-esp-rom-elfs @ 2024.10.11
• tool-esptoolpy @ 5.0.2
• tool-mklittlefs @ 3.2.0
• tool-ninja @ 1.13.1
• tool-scons @ 4.40801.0 (4.8.1)
• toolchain-riscv32-esp @ 14.2.0+20241119
  Reading CMake configuration...
  Dependency Graph
  |-- noise-c @ 0.1.10
  |-- ArduinoJson @ 7.4.2
  |-- esp-nimble-cpp @ 2.3.2
  Compiling .pioenvs\test\src\main.cpp.o
  Compiling .pioenvs\test\libc2d\esp-nimble-cpp\NimBLE2904.o
  Compiling .pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAddress.o
  Compiling .pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAdvertisedDevice.o
  Compiling .pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAdvertisementData.o
  Compiling .pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAdvertising.o
  Compiling .pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAttValue.o
  Compiling .pioenvs\test\libc2d\esp-nimble-cpp\NimBLEBeacon.o
  In file included from .piolibdeps/test/esp-nimble-cpp/src/NimBLE2904.cpp:18:
  .piolibdeps/test/esp-nimble-cpp/src/NimBLE2904.h:21:10: fatal error: syscfg/syscfg.h: No such file or directory
  21 | #include "syscfg/syscfg.h"
  | ^~~~~~~~~~~~~~~~~
  compilation terminated.
  *** [.pioenvs\test\libc2d\esp-nimble-cpp\NimBLE2904.o] Error 1
  In file included from .piolibdeps/test/esp-nimble-cpp/src/NimBLEAddress.cpp:18:
  .piolibdeps/test/esp-nimble-cpp/src/NimBLEAddress.h:21:10: fatal error: syscfg/syscfg.h: No such file or directory
  21 | #include "syscfg/syscfg.h"
  | ^~~~~~~~~~~~~~~~~
  compilation terminated.
  *** [.pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAddress.o] Error 1
  In file included from .piolibdeps/test/esp-nimble-cpp/src/NimBLEAdvertisedDevice.cpp:18:
  .piolibdeps/test/esp-nimble-cpp/src/NimBLEAdvertisedDevice.h:21:10: fatal error: syscfg/syscfg.h: No such file or directory
  21 | #include "syscfg/syscfg.h"
  | ^~~~~~~~~~~~~~~~~
  compilation terminated.
  *** [.pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAdvertisedDevice.o] Error 1
  In file included from .piolibdeps/test/esp-nimble-cpp/src/NimBLEAdvertisementData.cpp:18:
  .piolibdeps/test/esp-nimble-cpp/src/NimBLEAdvertisementData.h:21:10: fatal error: syscfg/syscfg.h: No such file or directory
  21 | #include "syscfg/syscfg.h"
  | ^~~~~~~~~~~~~~~~~
  compilation terminated.
  In file included from .piolibdeps/test/esp-nimble-cpp/src/NimBLEAdvertising.cpp:18:
  .piolibdeps/test/esp-nimble-cpp/src/NimBLEAdvertising.h:21:10: fatal error: syscfg/syscfg.h: No such file or directory
  21 | #include "syscfg/syscfg.h"
  | ^~~~~~~~~~~~~~~~~
  compilation terminated.
  *** [.pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAdvertisementData.o] Error 1
  In file included from .piolibdeps/test/esp-nimble-cpp/src/NimBLEAttValue.cpp:18:
  .piolibdeps/test/esp-nimble-cpp/src/NimBLEAttValue.h:21:10: fatal error: syscfg/syscfg.h: No such file or directory
  21 | #include "syscfg/syscfg.h"
  | ^~~~~~~~~~~~~~~~~
  compilation terminated.
  *** [.pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAdvertising.o] Error 1
  In file included from .piolibdeps/test/esp-nimble-cpp/src/NimBLEBeacon.cpp:18:
  .piolibdeps/test/esp-nimble-cpp/src/NimBLEBeacon.h:21:10: fatal error: syscfg/syscfg.h: No such file or directory
  21 | #include "syscfg/syscfg.h"
  | ^~~~~~~~~~~~~~~~~
  compilation terminated.
  *** [.pioenvs\test\libc2d\esp-nimble-cpp\NimBLEAttValue.o] Error 1
  *** [.pioenvs\test\libc2d\esp-nimble-cpp\NimBLEBeacon.o] Error 1
  In file included from src/esphome\components\idf_bthome_component\bthome_component.h:5,
  from src/esphome.h:30,
  from src/main.cpp:3:
  .piolibdeps/test/esp-nimble-cpp/src/NimBLEDevice.h:21:10: fatal error: syscfg/syscfg.h: No such file or directory
  21 | #include "syscfg/syscfg.h"
  | ^~~~~~~~~~~~~~~~~
  compilation terminated.
  *** [.pioenvs\test\src\main.cpp.o] Error 1
  ========================= [FAILED] Took 16.06 seconds =========================

The init. py file is as follows:

import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.const import CONF_ID

DEPENDENCIES = ["esp32"] # 依赖 ESP32 平台
AUTO_LOAD = [] # 不自动加载其他组件

定义配置常量

CONF_DEVICE_NAME = "device_name"
CONF_ENCRYPTION = "encryption"
CONF_ENCRYPTION_KEY = "encryption_key"
CONF_TRIGGER_BASED_DEVICE = "trigger_based_device"

创建命名空间和类引用

bthome_ns = cg.esphome_ns.namespace("bthome_component")
BTHomeComponent = bthome_ns.class_("BTHomeComponent", cg.Component)

配置 schema

CONFIG_SCHEMA = cv.Schema({
cv.GenerateID(): cv.declare_id(BTHomeComponent),
cv.Optional(CONF_DEVICE_NAME, default="ESP32-BTHome"): cv.string,
cv.Optional(CONF_ENCRYPTION, default=False): cv.boolean,
cv.Optional(CONF_ENCRYPTION_KEY, default=""): cv.string,
cv.Optional(CONF_TRIGGER_BASED_DEVICE, default=False): cv.boolean,
}).extend(cv.COMPONENT_SCHEMA)

async def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
await cg.register_component(var, config)
cg.add_library("esp-nimble-cpp ", "2.3.2")

The bthome_component. h file is as follows:

#pragma once

#include "esphome/core/component.h"

#include <NimBLEDevice.h>

namespace esphome {
namespace bthome_component {

class BTHomeComponent : public Component {
public:
void setup() override {
ESP_LOGI("bthome", "初始化 BTHome: %s", device_name_.c_str());

NimBLEDevice::init("");                         // Initialize the device, you can specify a device name if you want.
NimBLEScan* pBLEScan = NimBLEDevice::getScan();
// setDeviceName(dname);

}

void loop() override {
// 空实现或周期任务
}
};

} // namespace bthome_component
} // namespace esphome

[h2zero]

I wonder if @Jason2866 may know why pioarduino and espidf with arduino as a component fails to provide the include paths for nimble?

[Jason2866]

esphome does not support NimBLE. esphome has an individual special Platformio / pioarduino setup which only supports Bluedroid

[Jason2866]

Working setup to use h2zero NimBLE with pioarduino
https://github.com/pioarduino/platform-test

[Jason2866]

Not yet tried a setup for the P4. For sure it need changes in platformio.ini and sdkconfig
In idf_component.yml the P4 components needs to be added. In the platformio.ini the remove of the P4 components needs to be undone (deleting the relevant entrys) and in sdkconfig.defaults probably some more settings needed for the P4

[Jason2866]

This is the P4 config we use for Tasmota to have NimBLE working with the P4 in the Arduino Lib Builder

CONFIG_IDF_EXPERIMENTAL_FEATURES=y

CONFIG_NEWLIB_NANO_FORMAT=y
CONFIG_COMPILER_FLOAT_LIB_FROM_RVFPLIB=y

# Enable LP Core
CONFIG_ULP_COPROC_ENABLED=y
CONFIG_ULP_COPROC_TYPE_LP_CORE=y
CONFIG_ULP_COPROC_RESERVE_MEM=8192

CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ_360=y
CONFIG_COMPILER_ORPHAN_SECTIONS_PLACE=y
# CONFIG_ESP_TASK_WDT_CHECK_IDLE_TASK_CPU1 is not set

CONFIG_SPIRAM=y
CONFIG_SPIRAM_SPEED_200M=y
CONFIG_SPIRAM_XIP_FROM_PSRAM=y
CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY=y
CONFIG_SPIRAM_ALLOW_NOINIT_SEG_EXTERNAL_MEMORY=y
CONFIG_SPIRAM_BOOT_HW_INIT=y
CONFIG_SPIRAM_BOOT_INIT=y
CONFIG_SPIRAM_PRE_CONFIGURE_MEMORY_PROTECTION=y

CONFIG_RTC_CLK_CAL_CYCLES=576
# CONFIG_ESP_SLEEP_GPIO_RESET_WORKAROUND is not set
CONFIG_FREERTOS_WATCHPOINT_END_OF_STACK=y
CONFIG_FREERTOS_TIMER_TASK_STACK_DEPTH=3120
CONFIG_CACHE_L2_CACHE_256KB=y
CONFIG_CACHE_L2_CACHE_LINE_128B=y

# RGB Display Optimizations
CONFIG_LCD_RGB_ISR_IRAM_SAFE=y

CONFIG_SLAVE_IDF_TARGET_ESP32C6=y
CONFIG_ESP_SDIO_BUS_WIDTH=4
CONFIG_ESP_SDIO_CLOCK_FREQ_KHZ=40000
CONFIG_ESP_SDIO_PIN_CMD=19
CONFIG_ESP_SDIO_PIN_CLK=18
CONFIG_ESP_SDIO_PIN_D0=14
CONFIG_ESP_SDIO_PIN_D1=15
CONFIG_ESP_SDIO_PIN_D2=16
CONFIG_ESP_SDIO_PIN_D3=17

#
# Camera driver
#
CONFIG_CAMERA_SC2336=y
CONFIG_CAMERA_OV5647=y

#
# BT config
#
CONFIG_BT_ENABLED=y
CONFIG_BT_CONTROLLER_DISABLED=y
CONFIG_BT_BLUEDROID_ENABLED=n
CONFIG_BT_NIMBLE_ENABLED=y
CONFIG_BT_NIMBLE_TRANSPORT_UART=n

#
# Wi-Fi Remote
#
CONFIG_ESP_WIFI_REMOTE_ENABLED=y
CONFIG_ESP_WIFI_REMOTE_LIBRARY_HOSTED=y

#### Add Wi-Fi Remote config for better performance:
CONFIG_WIFI_RMT_STATIC_RX_BUFFER_NUM=16
CONFIG_WIFI_RMT_DYNAMIC_RX_BUFFER_NUM=64
CONFIG_WIFI_RMT_DYNAMIC_TX_BUFFER_NUM=64
CONFIG_WIFI_RMT_AMPDU_TX_ENABLED=y
CONFIG_WIFI_RMT_TX_BA_WIN=32
CONFIG_WIFI_RMT_AMPDU_RX_ENABLED=y
CONFIG_WIFI_RMT_RX_BA_WIN=32

CONFIG_LWIP_TCP_SND_BUF_DEFAULT=65534
CONFIG_LWIP_TCP_WND_DEFAULT=65534
CONFIG_LWIP_TCP_RECVMBOX_SIZE=64
CONFIG_LWIP_UDP_RECVMBOX_SIZE=64
CONFIG_LWIP_TCPIP_RECVMBOX_SIZE=64

#
# Enable ESP Hosted BT
# Used as VHCI transport between BT Host and Controller
#
CONFIG_ESP_HOSTED_ENABLE_BT_NIMBLE=y
CONFIG_ESP_HOSTED_NIMBLE_HCI_VHCI=y

#
# PPP
#
CONFIG_LWIP_PPP_SUPPORT=y
CONFIG_LWIP_PPP_NOTIFY_PHASE_SUPPORT=y
CONFIG_LWIP_PPP_PAP_SUPPORT=y
CONFIG_LWIP_PPP_ENABLE_IPV6=n

#
# Arduino TinyUSB
#
CONFIG_TINYUSB_ENABLED=y
CONFIG_TINYUSB_DEBUG_LEVEL=0

#
# Serial (CDC) driver
#
CONFIG_TINYUSB_CDC_ENABLED=y
CONFIG_TINYUSB_DESC_CDC_STRING="Tasmota CDC Device"
CONFIG_TINYUSB_CDC_RX_BUFSIZE=512
CONFIG_TINYUSB_CDC_TX_BUFSIZE=512
CONFIG_TINYUSB_CDC_MAX_PORTS=2
# end of Serial (CDC) driver

#
# Mass Storage (MSC) driver
#
CONFIG_TINYUSB_MSC_ENABLED=y
CONFIG_TINYUSB_DESC_MSC_STRING="Tasmota MSC Device"
CONFIG_TINYUSB_MSC_BUFSIZE=4096
# end of Mass Storage (MSC) driver

#
# Human Interface (HID) driver
#
CONFIG_TINYUSB_HID_ENABLED=y
CONFIG_TINYUSB_DESC_HID_STRING="Tasmota HID Device"
CONFIG_TINYUSB_HID_BUFSIZE=512
# end of Human Interface (HID) driver

#
# MIDI driver
#
CONFIG_TINYUSB_MIDI_ENABLED=y
CONFIG_TINYUSB_DESC_MIDI_STRING="Tasmota MIDI Device"
CONFIG_TINYUSB_MIDI_RX_BUFSIZE=512
CONFIG_TINYUSB_MIDI_TX_BUFSIZE=512
# end of MIDI driver

#
# VIDEO driver
#
CONFIG_TINYUSB_VIDEO_ENABLED=y
CONFIG_TINYUSB_DESC_VIDEO_STRING="Tasmota Video Device"
CONFIG_TINYUSB_VIDEO_STREAMING_BUFSIZE=512
CONFIG_TINYUSB_VIDEO_STREAMING_IFS=1
# end of VIDEO driver

#
# DFU Runtime driver
#
CONFIG_TINYUSB_DFU_RT_ENABLED=y
CONFIG_TINYUSB_DESC_DFU_RT_STRING="Tasmota DFU_RT Device"
# end of DFU Runtime driver

#
# DFU driver
#
CONFIG_TINYUSB_DFU_ENABLED=y
CONFIG_TINYUSB_DESC_DFU_STRING="Tasmota DFU Device"
CONFIG_TINYUSB_DFU_BUFSIZE=4096
# end of DFU driver

#
# VENDOR driver
#
CONFIG_TINYUSB_VENDOR_ENABLED=y
CONFIG_TINYUSB_DESC_VENDOR_STRING="Tasmota VENDOR Device"
CONFIG_TINYUSB_VENDOR_RX_BUFSIZE=512
CONFIG_TINYUSB_VENDOR_TX_BUFSIZE=512
# end of VENDOR driver

#
# NCM driver
#
CONFIG_TINYUSB_NCM_ENABLED=y

#
# USB-OTG
#
CONFIG_USB_HOST_CONTROL_TRANSFER_MAX_SIZE=1024
CONFIG_USB_HOST_HW_BUFFER_BIAS_BALANCED=y

#
# Root Port configuration
#
CONFIG_USB_HOST_DEBOUNCE_DELAY_MS=250
CONFIG_USB_HOST_RESET_HOLD_MS=30
CONFIG_USB_HOST_RESET_RECOVERY_MS=30
CONFIG_USB_HOST_SET_ADDR_RECOVERY_MS=10
CONFIG_USB_HOST_HUBS_SUPPORTED=y
CONFIG_USB_HOST_HUB_MULTI_LEVEL=y

#
# Downstream Port configuration
#
CONFIG_USB_HOST_EXT_PORT_RESET_ATTEMPTS=1
CONFIG_USB_HOST_EXT_PORT_RESET_RECOVERY_DELAY_MS=30
CONFIG_USB_HOST_DWC_DMA_CAP_MEMORY_IN_PSRAM=y
CONFIG_USB_OTG_SUPPORTED=y

[finger563]

I've used esp-nimble-cpp with a P4 (m5stack-tab5) and you need to make sure that in addition to adding the component dependency and enabling bluetooth, you also enable nimble instead of bluedroid.

[h2zero]

Thanks @Jason2866 and @finger563, hopefully this helps 👍

[4wheeljive]

Thanks so much @h2zero and @Jason2866 (and others!) for jumping in here.

I'm fairly new to pretty much everything involved here (electronics, coding, etc.); and I really struggle to understand what's going on with the various platforms, frameworks, development environments, etc.

I finally got BLE working on my P4-WIFI6 using ESP-IDF, espressif_arduino-esp32 and esp-nimble-cpp. It's possible that where I was getting hung up when I started this thread (i.e., Compile errors involving #include "syscfg/syscfg.h") was due to (1) a "dirty" installation of a key component (e.g., because I was bouncing back and forth trying different things without an effective clean in between), and/or (2) some particular ESP config setting that was messing up esp-nimble-cpp during compile. I really don't know.

What I would like to do next is try to get things working using the pioarduino IDE.

@Jason2866 You shared the config you used to "have NimBLE working with the P4 in the Arduino Lib Builder." I don't really understand what that means. Specifically:

• I have no idea how to use the Lib Builder. I read the following page and really had no idea what much of it was referring to: https://docs.espressif.com/projects/arduino-esp32/en/latest/lib_builder.html?highlight=lib%20builder
• I don't know how I would make use of whatever is produced by the Lib Builder. I see that the Lib Builder "repository contains the scripts that produce the libraries included with esp32-arduino"
• Is what you're describing here creating a new/custom Arduino core? Is that what would be referenced as the platform in platformio.ini (instead of, say, espressif32 or https://github.com/pioarduino/platform-espressif32/releases/download/54.03.20/platform-espressif32.zip )?
• If so, would the framework be "arduino" or "arduino, espidf"?

Assuming what you're referring to above involves creating a custom Arduino core, is that the only option for getting things like esp-hosted, esp-wifi, esp-nimble-cpp integrated using the pioardino IDE? Or could that also be done using appropriate build flags, sdkconfig.defaults, idf_component.yml, etc.?

Sorry for posing so many questions. I'm a reasonably fast learner, but I just find all of this stuff extremely confusing!

Thanks so much for your time and guidance!.

[Jason2866]

@4wheeljive I was unclear. You should not use Arduino Lib Builder. Mentioned only because the sdkconfig settings used there are known to be good to use with h2zero NimBLE cpp.
So it can be a boilerplate for your sdkconfig you have to use.
For questions and help join pioarduino Discord https://discord.gg/Nutz9crnZr

If you upload the current attempt of your pioarduino project to github and post the link to, i will have a look.