[BUG:ESP32:LittleFS] Cannot rotate chart data #40

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opened 2025-04-12 02:44:06 +02:00 by DeltaLima · 2 comments

DeltaLima commented

2025-04-12 02:44:06 +02:00

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When rotating on ESP32, deleting old files failes with error message, that the FD (file descriptor) is still open.

Maybe this is helpful: https://www.b4x.com/android/forum/threads/problem-deleting-files-with-littlefs.143882/

When rotating on ESP32, deleting old files failes with error message, that the FD (file descriptor) is still open. Maybe this is helpful: https://www.b4x.com/android/forum/threads/problem-deleting-files-with-littlefs.143882/

DeltaLima added this to the v0.2.0 Release milestone

2025-04-12 02:44:06 +02:00

DeltaLima added the

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v0.2.x

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2025-04-12 02:44:06 +02:00

DeltaLima added this to the CanGrow Firmware project

2025-04-12 02:44:06 +02:00

DeltaLima referenced this issue

2025-04-12 02:52:08 +02:00

[Grow:Dashboard] Sensor Data logging to LittleFS #35

DeltaLima added a new dependency

2025-04-12 02:52:25 +02:00

#35 [Grow:Dashboard] Sensor Data logging to LittleFS

DeltaLima commented

2025-04-12 03:16:19 +02:00

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from the linked forum post i think a way to workaround this issue is to store all filenames for deletion into an array.
The array can be an unsigned long because I already convert the filename to it to compare it as number.

Maybe I have to iterate over all files twice. Onetime to count the total number of files, then initialize the array with the size of counted files in total, then iterate a second time, compare the filenames if they are ready for deletion. If so, store the filname as unsigned longl into the array. delete only, when filename > 0

from the linked forum post i think a way to workaround this issue is to store all filenames for deletion into an array. The array can be an `unsigned long` because I already convert the filename to it to compare it as number. Maybe I have to iterate over all files twice. Onetime to count the total number of files, then initialize the array with the size of counted files in total, then iterate a second time, compare the filenames if they are ready for deletion. If so, store the filname as `unsigned longl` into the array. delete only, when `filename > 0`

DeltaLima referenced this issue from a commit

2025-04-18 15:53:16 +02:00

#40 rotation works now on ESP32 (D1 Mini) but reading data seems to be broken (now?)

DeltaLima referenced this issue from a commit

2025-04-18 18:04:27 +02:00

add debugging output because i forgot byte is max 255 and not 256 -.- #40

DeltaLima commented

2025-04-18 19:04:02 +02:00

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solved

DeltaLima closed this issue