Memory Useage Summary?

[klaatu2]

ESP32-S3, with 16MB or Flash, and 8MB of PSRAM.

When ESP-IDF v5.4 compiles it produces the summary below:

How does this summary showing 42MB of Total available Flash make sense?
No mention of PSRAM.
No mention of internal ROM

ESP32 Memory summary.png (18.92 KiB) Viewed 1665 times

[chegewara]

Hi
- 4 474 552 - is not 42MB
- you have setup 32MB in sdkconfig, i think, because its what the total bytes show

[klaatu2]

I'm not talking about the resulting code size, but rather the total bytes available as shown in the right most column

[chegewara]

Ok, thats fine. But its still 32MB, thats why i said this

- you have setup 32MB in sdkconfig, i think, because its what the total bytes show

Just check with idf.py menuconfig

[klaatu2]

In Menuconfig, its set to 16MB.

[chegewara]

You are correct, idf.py size seems to be broken.
I thought it may be only on P4, but on S3 it shows very odd values too (maybe other models too)

Code: Select all

                            Memory Type Usage Summary                             
┏━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Memory Type/Section ┃ Used [bytes] ┃ Used [%] ┃ Remain [bytes] ┃ Total [bytes] ┃
┡━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ Flash Code          │      1312083 │    15.64 │        7076493 │       8388576 │
│    .text            │      1312083 │    15.64 │                │               │
│ Flash Data          │       376608 │     1.12 │       33177792 │      33554400 │
│    .rodata          │       340736 │     1.02 │                │               │
│    .bss             │        35616 │     0.11 │                │               │
│    .appdesc         │          256 │      0.0 │                │               │
│ DIRAM               │       262932 │    76.93 │          78828 │        341760 │
│    .text            │       171807 │    50.27 │                │               │
│    .bss             │        70936 │    20.76 │                │               │
│    .data            │        19964 │     5.84 │                │               │
│ IRAM                │        16384 │    100.0 │              0 │         16384 │
│    .text            │        15356 │    93.73 │                │               │
│    .vectors         │         1028 │     6.27 │                │               │
│ RTC FAST            │           52 │     0.63 │           8140 │          8192 │
│    .force_fast      │           28 │     0.34 │                │               │
│    .rtc_reserved    │           24 │     0.29 │                │               │
└─────────────────────┴──────────────┴──────────┴────────────────┴───────────────┘
Total image size: 1861258 bytes (.bin may be padded larger)

with values

Code: Select all

CONFIG_IDF_TARGET="esp32s3"
CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y

- flash size 4MB
- size shows flash code total bytes 8MB
- flash data total bytes 32MB