How to compile MySensors on Platformio for Blue Pill

CarloMagno

@novicit Using the link you provided I have confirmed that my board is a 128k flash variant (installing STM32CubeProgrammer" and launching its graphical IDE, not tried the command line option).
I have sucessfully compiled the koolru branch with PlatformIO and got the node to send messages go the gateway. What I did:

Installed in PlatformIO the stable MySensors library (from PlatformIO library manager)
Downloaded the koolru MySensos full library (Download Zip option from View Code Github) and decompress it into a custom folder
Linked the koolru MySensors library as a project specific library (to be used for that project instead of the global MySensors library). Place the decompressed folder library in a folder, for example: H:\PlatformIO\custom_libraries\ (so the files for the custom MySensors library are in *H:\PlatformIO\custom_libraries\MySensors-development* ).
Created the fix_main.py with the modified line I posted in the previous post (you need to have installed pyton intepreter for OS and Pytnon plugin for PlatformIO to be able to use this precompiling script)

The platformio.ini file is:

[env:genericSTM32F103CB]
platform = ststm32
board = genericSTM32F103CB
framework = arduino
;board_build.core = maple
monitor_speed = 115200
monitor_filters = time, default
extra_scripts = pre:fix_main.py
lib_extra_dirs = H:\PlatformIO\custom_libraries\

[env:Sensor-Serial-Windows]
upload_port = COM7
monitor_port = COM7


[env:Sensor-Serial-Linux]
; any port that starts with /dev/ttyUSB
upload_port = /dev/ttyUSB*
monitor_port = /dev/ttyUSB*

Start of the compiling process (you can see that the python script is being executed and that the development version of MySensors is selected):

Processing genericSTM32F103CB (platform: ststm32; board: genericSTM32F103CB; framework: arduino)
------------------------------------------------------------------------------------------------------------------------------

Verbose mode can be enabled via `-v, --verbose` option

================================= STM32 FRAMEWORK PATCHER =================================

[INFO] Patching file: C:\Users\xxxxxx\.platformio\packages/framework-arduinoststm32-maple\STM32F1\cores\maple\main.cpp
[INFO] Patching file: C:\Users\xxxxxx\.platformio\packages/framework-arduinoststm32-maple\STM32F4\cores\maple\libmaple\main.cpp

============================================================================================

CONFIGURATION: https://docs.platformio.org/page/boards/ststm32/genericSTM32F103CB.html
PLATFORM: ST STM32 6.1.0 > STM32F103CB (20k RAM. 128k Flash)
HARDWARE: STM32F103CBT6 72MHz, 20KB RAM, 128KB Flash
DEBUG: Current (blackmagic) External (blackmagic, jlink, stlink)
PACKAGES:
 - framework-arduinoststm32-maple 2.10000.200103 (1.0.0)
 - toolchain-gccarmnoneeabi 1.70201.0 (7.2.1)
LDF: Library Dependency Finder -> http://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 48 compatible libraries
Scanning dependencies...
Dependency Graph
|-- <MySensors> 2.4.0-alpha
|   |-- <Wire> 1.0
|   |-- <SPI> 1.0
|   |-- <EEPROM>
Building in release mode

And the compilation results (I got several warnings regarding SPI but the result is sucessful):

Building .pio\build\genericSTM32F103CB\firmware.bin
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM:   [===       ]  26.3% (used 5384 bytes from 20480 bytes)
Flash: [====      ]  38.0% (used 49840 bytes from 131072 bytes)
================================================ [SUCCESS] Took 17.96 seconds ================================================

... @novicit you mention that using the script previously you couldn't get it to work.. check Python install and plugins.. also to debug MySensor messages I used a separate usb to TTL (not STLINK attached to PA9 and PA10 as I explained before).

... and now the next problem... the STM32LowPower.h library (to get the STM32 to deep sleep) is compiling properly in Arduino IDE but does not compile in PlatformIO ... again... :disappointed:

novicit

@CarloMagno You are fortunate to have the 128k Blue Pill. I hope mine are also.

Funny, in coding there are always different ways to do things. Working with PlatformIO, I linked to the MySensors development branch in the platform.ini as follows:

[env:bluepill_f103c8]
platform = ststm32
board = bluepill_f103c8
framework = arduino

lib_deps =
  https://github.com/mysensors/MySensors.git#development

lib_ignore =
  ;MySensors standard library
  548

It seemed to work. But I have not yet finished testing.

In your compile on PlatformIO, it makes me wonder if perhaps it used the maple (RogerClark) core instead of STM32. I observe:

The STM core also includes the maple core. (https://docs.platformio.org/en/latest/platforms/ststm32.html)
Though the .ini file does not have "board_build.core = maple" in it, the compile output has "framework-arduinoststm32-maple 2.10000.200103 (1.0.0)" in the output.
The output file size of 50k flash seems large and is comparable to the output I got from my Maple/RogerClark testing. Is it the same size as you got when compiling in the Arduino IDE with STM32 core?
The low power library has been written up as not compiling with maple/RogerClark core, but does with STM32 core.
==> Just some observations to be confirmed?

In my initial attempts to compile with STM32 core on PlatformIO, it uses the development branch, but I get an error message:
".pio/build/bluepill_f103c8/FrameworkArduinoVariant/PeripheralPins.c' not found, needed by target..."
=> I have not had the time to solve this yet. But, compiler is looking for a file which describe pin map - PeripheralPins.c I am guessing this is similar to MySensors instructions for Nrf5 where two files are in the sketch directory to specify pin assignments. (MyBoardNRF5.cpp and .h)

[Sorry I am not able to make faster progress contributing to this thread. I am a couple weeks out of the hospital and can only sit at my computer for short periods so far. But happy, repairs were successful :) ]

CarloMagno

@novicit, nice to hear hospital "repairs" doing well!
I don't have much time either, so, when I find some time in the weekends I try the following step...
A couple of things regarding your comments:

The way you included the development branch of MySensors in Platformio I believe it takes the "official" MySensors development branch, and I don't konw if the commit by koolru has been merged into that branch.. i believe not.. so it is not using the right code for the STM official core, and could be the origin of your error message. That is the reason I downloaded the library and used a local stored copy from koolru repository. I had also to have installed the official MySensors library (otherwise it gave me compiling errors), as if some library dependencies were missing from koolru branch ¿?.
It is true that STM32 core in platformio has both the Roger Clark and Official ststm core. By default it uses the official core. If you want to compile for the Rogre Clark you include the option board_build.core = maple in Platformio.ini.
The LowPower library is compiling in the Arduino IDE but gives errors in Platformio with ststm32 core (official).

Bogusz Jagoda

Maybe diggin a topic a bit, but as for June 2021 :

In library file MyHwSTM32.h one line seems to be lost :


#ifndef MyHwSTM32_h
#define MyHwSTM32_h

#include <IWatchdog.h>
#include <itoa.h>
#include <SPI.h>
#include <EEPROM.h>   <<--- this is necessary to compile agains BluePill

and something like this in platformio.ini

[env:bluepill_f103c8]
platform = ststm32
board = bluepill_f103c8
framework = arduino

upload_protocol = stlink
debug_port = stlink
debug_tool = stlink
monitor_speed = 115200
monitor_filters = time, default

Just to keep you entertained.
Cheerz.

How to compile MySensors on Platformio for Blue Pill

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