Different SPIFFS images for different build environments

FAQ
1

Is it possible to construct different SPIFFS images for different build environments? My idea was to use different data directories, but data dir is specified in [platformio] section which is common for all environments.

2

Hm. But Redirecting... also states that the option is overridden by the environment variable PLATFORMIO_DATA_DIR (Environment variables — PlatformIO latest documentation).

So theoretically you can add an extra_script to each build environment which will, before build, export the correct value for PLATFORMIO_DATA_DIR? (Redirecting...)

Either that or make a feature request to move data_dir in the build environment section to make it per-environment configurable.

If you are uploading from your terminal, you can just prepend the environment var in the command, like (for Unix-like systems)

PLATOFRMIO_DATA_DIR=/data_dir_1 pio run -t upload -e myenv1
3

Good question! Please take a look at:

So, you can create one PRE script per all environments and inside control PROJECTDATA_DIR variable. For example,

data_dir_per_env.py

Import("env")
env.Replace(PROJECTDATA_DIR="$PROJECTDATA_DIR/$PIOENV")

platformio.ini

[env:myenv1]
extra_scripts = pre:data_dir_per_env.py

[env:myenv2]
extra_scripts = pre:data_dir_per_env.py

Now, keep the next file structure:

project
  | - data
         |- myenv1
              ... files
          |- myenv2
              ... files

P.S: I didn’t test. Please re-test code above.

1 Like
4

I’m looking to do this as well. Would it not be possible to make data_dir an envirmonetal variable too, that can override a global one, or not. but i want different SPIFFS images depending on my debug and release builds.

5

Isn’t it possible to set different data_dir per each environment?

1 Like
6

UPDATE:

In my case I need to use this code:

Import("env")

env.Replace(PROJECT_DATA_DIR='$PROJECT_DIR/data/$PIOENV')

Alan