Platform IO why everytime build the application checking the partition table at offset 0x8000 why?

[ept-taseen]

1. Just building the application with platform.io and found that this application is not working with any other partition table having different offset other then 0x8000

The application should be independent of this hard coded 0x8000 address, because if we want to change the address of our partition table then the application unable to locate the partition table and failed to load the nvs

The app eveytime check the nvs at partition offset 0x8000 why?

[Jason2866]

Why, probably because it is hardcoded in ArduinoIDE too. Changed this recently to make it configurable. This possibility is only available with latest released Arduino core 3.2.1. If you want to use you have to use the fork pioarduino.

[ept-taseen]

@Jason2866 i guess this is only for the uploading ?

The application which build from the platform.io is also checking the partition table from address 0x8000

I have already did change these lines from my platform code but still getting issue

The flashing problem is resolved i can flash custom partition, application to custom location but the application build form the platform.io is not able to find the partition table if it is not present at address 0x8000

[valeros]

@ept-taseen what framework are you using?

[ept-taseen]

@valeros i am using arduino framework

[valeros]

@ept-taseen You cannot change it, the entire Arduino framework was configured with the 0x8000 offset for the partition table (see the sdkconfig file).

[ept-taseen]

@valeros what if i want to change the offset?

i want to build the application from the platform io arduino framework

1. Is there any way or we need to build the arduino core again?
2. My bootloader length is now large and want to move the partition table to next offset

[valeros]

You can convert your project to a mixed Arduino/IDF project (see an example).

[ept-taseen]

@valeros

There is no way we can tell pio application to check the partition-table from other address rather then 0x8000

1. I have modified the partition table, and it is working fine, the application is loading from custom partition table also from custom address
2. Also very interesting thing i want to share i guess there is one loopwhole in arduino system

When i upload my binaries on dedicated places

1. bootloader 0x1000
2. partition table 0x10000
3. application 0x20000

I found that application loaded from bootloader but it failed with partition table saying not able to run nvs and md5 error

But there is some space available after bootloader and partition table i added there also same partition table at address 0x8000 and boom application loaded successfully

Also in my application i added one function which is reading the partition table and when i check it show me the partition table to 0x10000 place rather then 0x8000

After that i added same function in initArduino() in esp32-hal-misc.c fine which is the entry point of the application, now i see there the logs also show me the partition table of same address 0x10000,

Now here in esp32-hal-misc.c file the apis of partition table are same(which is normal), which searching for the partition table, but here in iniArduino function fail to read nvs and partition if there is nothing at 0x8000,

Why it is happening these apis are reading the custom partition table 0x10000 which is correct only if there is a partition table at 0x8000,
and if there is no partition table at 0x8000 it is not reading,

Why api function are reading the partition correctly ?

[valeros]

@ept-taseen Are we still talking about a native Arduino project or it's a mixed Arduino/IDF project?