NEED help in setting up partition Scheme/Table for ESP32-WROOM-32D (8MB)

[Electro-boy]

Am trying to find partition table for enabling partition scheme with boards.txt.
Am using a 8MB flash version of ESP32-WROOM-32D from digikey.
https://www.digikey.in/product-detail/en/espressif-systems/ESP32-WROOM-32D-8MB/1904-1024-6-ND/9381749

I am trying to increase the APP size to 4MB and SPIFFS to 3MB without OTA.

how to create the partition table for the 8MB FLASH Module.

Please Someone guide me.

I have arrived at these lines for scheme. will it work?

# Name,Type,SubType,Offset,Size,Flags
nvs,      data,  nvs,     0x9000,    0x5000	,
phy_init, data,  phy,     0xe000,    0x2000	,
factory,  app,   factory, 0x10000,   0x3500000	,
spiffs,   data,  spiffs,  0x3510000,  0xF0000	,

[lbernstone]

arduino-esp32 includes OTA whether you need it or not. So, you need to have otadata and ota_0 rather than a factory partition. Note that the app will calculate offsets if not included. 8MB = 0x800000. If you save this file as partitions.csv in your sketch folder, Arduino IDE will use it instead of the selected partition scheme (but the maximum sketch size still comes from that...)

# Name,   Type, SubType, Offset,  Size, Flags
nvs,      data, nvs,     0x9000, 0x5000,
otadata,  data, ota,           , 0x2000,
app0,     app,  ota_0,         , 0x400000,
spiffs,   data, spiffs,        , 0x300000,

[lorol]

@lbernstone
If this is the case (mandatory including OTA), then could you please revise the examples proposed here for correctness?
What is the size difference between ota and ota_0 for?
https://github.com/espressif/arduino-esp32/tree/master/tools/partitions
There are 8M and 16MB templates
Also, some of them are rendered in a nice table by GitHub web, others not. I guess it depends of having enough commas matching first line.

[lbernstone]

All the included partition schemes include otadata. https://docs.espressif.com/projects/esp-idf/en/v3.3.4/api-reference/system/ota.html#ota-data-partition. If you find the cosmetic discrepancies a problem, you are welcome to fix them.

[lorol]

Got it, I missed ota-data word. All good.

[lorol]

@lbernstone

If you save this file as partitions.csv in your sketch folder, Arduino IDE will use it instead of the selected partition scheme

I didn't know this and it is interesting ... I am testing it also on the Java arduino-esp32fs-plugin and it works well.
Just the Offset and Size values must be present (for now) so the tool can flash properly the data partition, unless offsets calculation is done as well ...

[lorol]

Hi @lbernstone again.
Slightly off-topic but on identical subject.
I have really hard time to let Arduino IDE under win10 zip installation to "take" the partition.csv from sketch folder.
Really annoying and spent a lot of time.
I see with debug that it copies from sketch to build place according to platform.txt line:

recipe.hooks.prebuild.1.pattern.windows=cmd /c if exist "{build.source.path}\partitions.csv" copy /y "{build.source.path}\partitions.csv" "{build.path}\partitions.csv"

And file is there,
Even later gen_esp32part.exe makes the bin from it.
But at the end, it always gives the default Sketch uses 239044 bytes (18%) of program storage space. Maximum is 1310720 bytes.
The partition.csv table is:

# Name,   Type, SubType, Offset,  Size, Flags
nvs,      data, nvs,     0x9000,  0x5000,
otadata,  data, ota,     0xe000,  0x2000,
app0,     app,  ota_0,   0x10000, 0x100000,
app1,     app,  ota_1,           ,0x100000,
spiffs,   data, spiffs,          ,0x1F0000,

app should not be 1310720 size, right? Any help on this?

[lbernstone]

As mentioned above, Arduino decides the maximum sketch size from the chosen partition scheme. It is not looking at the partition table. Pick a scheme with a very large app size to get around this.

[lorol]

Actually, the Arduino IDE doesn't seem to really care about partition.csv at sketch folder!
Same as described here: #703
You need to modify boards.txt with 3 new entries for your board and add the custom csv together with others, example, I copied my custom partition.csv as my.csv where all others are for Arduino IDE pick-up, and modified the boards.txt:

ttgo-t1.menu.PartitionScheme.my=My with OTA (1MB APP/2MB SPIFFS)
ttgo-t1.menu.PartitionScheme.my.build.partitions=my
ttgo-t1.menu.PartitionScheme.my.upload.maximum_size=1048576

to get custom partition taken from IDE menu

[lorol]

I got that ... But why it copies the partition.csv from sketch to build and makes bin table anyway?
While it "works" (builds) by selecting large enough from menu, It messes-up when i use the tool to upload based on present partition.csv
In 2 words, the menu of IDE is not overridden only by having your custom partition.csv near the sketch .... too bad. I would be nice if it FW building takes directly if exists, as I get the tool to do it for DATA

[lorol]

Wow! It is very confusing,
Sorry ... after tests it turns out that IDE considers the partition.csv at sketch folder but is really gray zone.
IDE is taking the upload.maximum_size from selected menu scheme and what you see for % usage and "Maximum is 1310720 bytes." may not be not exactly the truth ...

Also I found another reason of my ongoing troubles: in my custom partition file, I had non-ascii invisible symbol paste from value copied from M$ Windows Calculator app in Programmer mode, and it even was in a commented line:
#4M total 0x400000 :: 23 34 4d 20 74 6f 74 61 6c 20 30 78 34 30 30 30 30 30 0d 0a 23 30 78 31 30 30 30 30 30 20 e2 80 ad 31 30 34 38 35 37 36 e2 80 ac

[jshep321]

Hi,
I made a quick reference excel sheet for the ESP32-WROOM (4MB flash) partition tables. It's quick and dirty, but gives an overview of what is available in the commonly used settings.

And the worksheet:
calcs for ESP32 partitions.xlsx

[stale]

[STALE_SET] This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 14 days if no further activity occurs. Thank you for your contributions.

[capedra]

Wait. What if I want to put 4 mb for the app and 4 mb for the ota?