Arduino Nano ESP32 Multiple Board Project Setup

Development Platforms
1

Hello everyone!

I am fairly new to PlatformIO / embedded development but not new to C++ or software development. I am trying to setup a project in such a way that I can have two main files in the /src directory and have each of the main files be uploaded to a separate Arduino Nano ESP32. The project structure I am looking for is below.

image

[env:arduino_nano_esp32]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = +<*>

[env:Sender]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = +<Sender.cpp>
upload_protocol = dfu
upload_port = /dev/cu.usbmodem3485187ABD482
monitor_port = /dev/cu.usbmodem3485187ABD482
upload_flags =
    --serial

[env:Receiver]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = +<Receiver.cpp>
upload_protocol = dfu
upload_port = /dev/cu.usbmodem3485187AA41C2
monitor_port = /dev/cu.usbmodem3485187AA41C2
upload_flags =
    --serial

With this platformio.ini file I get this error.

Processing Sender (platform: espressif32; board: arduino_nano_esp32; framework: arduino)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/espressif32/arduino_nano_esp32.html
PLATFORM: Espressif 32 (6.6.0) > Arduino Nano ESP32
HARDWARE: ESP32S3 240MHz, 320KB RAM, 16MB Flash
DEBUG: Current (cmsis-dap) External (cmsis-dap, dfu, esp-bridge, esp-builtin, esp-prog, iot-bus-jtag, jlink, minimodule, olimex-arm-usb-ocd, olimex-arm-usb-ocd-h, olimex-arm-usb-tiny-h, olimex-jtag-tiny, tumpa)
PACKAGES: 
 - framework-arduinoespressif32 @ 3.20014.231204 (2.0.14) 
 - tool-dfuutil-arduino @ 1.11.0 
 - tool-esptoolpy @ 1.40501.0 (4.5.1) 
 - tool-mkfatfs @ 2.0.1 
 - tool-mklittlefs @ 1.203.210628 (2.3) 
 - tool-mkspiffs @ 2.230.0 (2.30) 
 - tool-openocd-esp32 @ 2.1100.20220706 (11.0) 
 - toolchain-riscv32-esp @ 8.4.0+2021r2-patch5 
 - toolchain-xtensa-esp32s3 @ 8.4.0+2021r2-patch5
LDF: Library Dependency Finder -> https://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 33 compatible libraries
Scanning dependencies...
Dependency Graph
|-- WiFi @ 2.0.0
Building in release mode
Retrieving maximum program size .pio/build/Sender/firmware.elf
Checking size .pio/build/Sender/firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM:   [==        ]  16.9% (used 55272 bytes from 327680 bytes)
Flash: [==        ]  22.3% (used 700561 bytes from 3145728 bytes)
Configuring upload protocol...
AVAILABLE: cmsis-dap, dfu, esp-bridge, esp-builtin, esp-prog, espota, esptool, iot-bus-jtag, jlink, minimodule, olimex-arm-usb-ocd, olimex-arm-usb-ocd-h, olimex-arm-usb-tiny-h, olimex-jtag-tiny, tumpa
CURRENT: upload_protocol = dfu
Uploading .pio/build/Sender/firmware.bin
Error: Unexpected argument: 0x2341:0x0070

My current theory is the conflicting --serial flag and dfu upload protocol but when I remove the --serial flag I get dfu-util: More than one DFU capable USB device found!. I thought setting upload_port on the two environments was enough…what am I missing?

Thank you in advance!

Winston

2

Make a common environment and two seperate for sender and receiver.
In the common environment env you need to remove all source files first (build_src_filter = -<*>)
In the other environments add the different source files and the different upload and monitor port you want to use

[env]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = -<*>

[env:Sender]
build_src_filter = +<Sender.cpp>
upload_port = /dev/cu.usbmodem3485187ABD482
monitor_port = /dev/cu.usbmodem3485187ABD482

[env:Receiver]
build_src_filter = +<Receiver.cpp>
upload_port = ???
monitor_port = ???

I don’t know if the upload_port and monitor_port is correct cause I’m on Windows and use COMxx.
For the receiver you have to remove the “???” and add the correct port (because I don’t know them).
I also don’t know the nano_esp32 but upload_protocol = dfu and upload_flags = --serial looks suspicious to me.

3

Hello! Something got lost in translation with the question marks :grin: but I was able to get it working with a merge of what you had and what I had.

[env:arduino_nano_esp32]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = -<*>

[env:Sender]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = +<Sender.cpp>
upload_port = /dev/cu.usbmodem3485187ABD482
monitor_port = /dev/cu.usbmodem3485187ABD482

[env:Receiver]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = +<Receiver.cpp>
upload_port = /dev/cu.usbmodem3485187AA41C2
monitor_port = /dev/cu.usbmodem3485187AA41C2

The arduino_nano_esp32 environment does not build successfully but I am not worried about it.

Thank you again!

Winston

4

Are this 3 different setups (arduino_nano_esp32, Sender, Receiver) or 2 (Sender / Receiver)?

5

If this are just 2 setups it should be either

[env]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = -<*>

[env:Sender]
build_src_filter = +<Sender.cpp>
upload_port = /dev/cu.usbmodem3485187ABD482
monitor_port = /dev/cu.usbmodem3485187ABD482

[env:Receiver]
build_src_filter = +<Receiver.cpp>
upload_port = /dev/cu.usbmodem3485187AA41C2
monitor_port = /dev/cu.usbmodem3485187AA41C2

or

[env:Sender]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = 
  -<*>
  +<Sender.cpp>
upload_port = /dev/cu.usbmodem3485187ABD482
monitor_port = /dev/cu.usbmodem3485187ABD482

[env:Receiver]
platform = espressif32
board = arduino_nano_esp32
framework = arduino
build_src_filter = 
  -<*>
  +<Receiver.cpp>
upload_port = /dev/cu.usbmodem3485187AA41C2
monitor_port = /dev/cu.usbmodem3485187AA41C2