From f38dcea1f1188eaa513074b217944f1658024f27 Mon Sep 17 00:00:00 2001
From: cjkas <slaw.cz@gmail.com>
Date: Tue, 24 Mar 2026 20:08:17 +0100
Subject: [PATCH] add archive for last 10 builds

---
 .gitignore     |  3 ++-
 archive_elf.py | 45 +++++++++++++++++++++++++++++++++++++++++++++
 platformio.ini | 22 ++++++++++++++--------
 3 files changed, 61 insertions(+), 9 deletions(-)
 create mode 100644 archive_elf.py

diff --git a/.gitignore b/.gitignore
index 5609aab..d384d46 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,4 +14,5 @@ data/
 build/
 coredump_report.txt
 coredump.bin
-logs/
\ No newline at end of file
+logs/
+elf_archive/
\ No newline at end of file
diff --git a/archive_elf.py b/archive_elf.py
new file mode 100644
index 0000000..0e5416e
--- /dev/null
+++ b/archive_elf.py
@@ -0,0 +1,45 @@
+"""
+PlatformIO post-build script: archive firmware.elf files.
+
+Copies firmware.elf to elf_archive/ with a timestamp after each build.
+Keeps only the last 10 files to avoid filling up disk space.
+
+Usage in platformio.ini
+-----------------------
+    extra_scripts = post:archive_elf.py
+"""
+
+Import("env")
+
+import os
+import shutil
+from datetime import datetime
+
+MAX_ARCHIVES = 10
+ARCHIVE_DIR = os.path.join(env.subst("$PROJECT_DIR"), "elf_archive")
+
+
+def archive_elf(source, target, env):
+    elf_path = os.path.join(env.subst("$BUILD_DIR"), "firmware.elf")
+    if not os.path.isfile(elf_path):
+        print("[archive_elf] firmware.elf not found, skipping.")
+        return
+
+    os.makedirs(ARCHIVE_DIR, exist_ok=True)
+
+    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+    dest = os.path.join(ARCHIVE_DIR, f"firmware_{timestamp}.elf")
+    shutil.copy2(elf_path, dest)
+    print(f"[archive_elf] Saved {dest}")
+
+    # Keep only the last MAX_ARCHIVES files
+    files = sorted(
+        [f for f in os.listdir(ARCHIVE_DIR) if f.endswith(".elf")],
+    )
+    while len(files) > MAX_ARCHIVES:
+        old = os.path.join(ARCHIVE_DIR, files.pop(0))
+        os.remove(old)
+        print(f"[archive_elf] Removed old archive {old}")
+
+
+env.AddPostAction("$BUILD_DIR/firmware.elf", archive_elf)
diff --git a/platformio.ini b/platformio.ini
index 2141691..78f2179 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -1,30 +1,38 @@
 ; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
 [platformio]
-default_envs = esp32dev
+default_envs = esp32devdbg
 
-; Shared settings for all environments
 [env]
 platform = espressif32
 framework = arduino
-lib_deps =
+lib_deps = 
 	bblanchon/ArduinoJson@^7.2.2
 	lsatan/SmartRC-CC1101-Driver-Lib@^2.5.7
 	knolleary/PubSubClient@^2.8
 	esp32async/ESPAsyncWebServer@^3.10.3
 	esp32async/AsyncTCP@^3.4.10
-extra_scripts = pre:minify.py
+extra_scripts = 
+	pre:minify.py
+	post:archive_elf.py
 board_build.partitions = huge_app.csv
 board_build.filesystem = littlefs
-build_flags =
+build_flags = 
 	-DCONFIG_ESP_COREDUMP_ENABLE_TO_FLASH=1
 	-DCONFIG_ESP_COREDUMP_DATA_FORMAT_ELF=1
 	-DCONFIG_ESP_COREDUMP_CHECKSUM_CRC32=1
 	-DCONFIG_ESP_TASK_WDT_PANIC=1
 	-DCONFIG_ESP_COREDUMP_DECODE_INFO=1
 monitor_speed = 115200
-monitor_filters =
+monitor_filters = 
 	time
 	esp32_exception_decoder
 	log2file
@@ -35,5 +43,3 @@ board = esp32dev
 [env:esp32devdbg]
 board = esp32dev
 build_type = debug
-
-