desperate attempt for 8266 survival

* bring back UREAL_MATH (inaccuate, but smaller flash) * typing to tune feature sets so they fit into small 8266 models
2025-11-24 15:50:04 +01:00
parent eba5c2f8a1
commit 384cbec86e
3 changed files with 49 additions and 22 deletions
--- a/platformio.ini
+++ b/platformio.ini
@@ -1428,10 +1428,14 @@ upload_speed = 460800 ;115200
 board_build.f_cpu = 160000000L    ;; we want 160Mhz (default = 80Mhz)
 build_flags = ${common.build_flags_esp8266}
  -D WLED_RELEASE_NAME=esp8266_2MB_S
+  -D WLED_USE_UNREAL_MATH ;; may cause some wrong sunset/sunrise times, but saves 7064 bytes FLASH and 975 bytes RAM
+  -D WLEDMM_SAVE_FLASH
  -D WLED_DISABLE_ALEXA
  -D WLED_DISABLE_HUESYNC
  -D WLED_DISABLE_ESPNOW  ;; might help in case of WiFi connectivity problems
  -D WLED_DISABLE_LOXONE ;  FLASH 1272 bytes
+  -D WLED_DISABLE_PARTICLESYSTEM1D ;; exceeds flash size limit
+  -D WLED_DISABLE_PARTICLESYSTEM2D ;; exceeds flash size limit
  ;; -D WLED_DISABLE_MQTT ;    RAM 216 bytes; FLASH 16496 bytes
  ;; -D WLED_DISABLE_INFRARED ;RAM 136 bytes; FLASH 24492 bytes
  ; -D WLED_DISABLE_2D
@@ -1440,8 +1444,8 @@ build_flags = ${common.build_flags_esp8266}
  ; -D WLED_DEBUG
 ; monitor_filters = esp8266_exception_decoder
 ;; lib_ignore = IRremoteESP8266 ; use with WLED_DISABLE_INFRARED for faster compilation
-; RAM:   [======    ]  60.8% (used 49836 bytes from 81920 bytes)
-; Flash: [========  ]  83.3% (used 869783 bytes from 1044464 bytes)
+; RAM:   [======    ]  61.3% (used 50224 bytes from 81920 bytes)
+; Flash: [========= ]  87.6% (used 915303 bytes from 1044464 bytes)

 [env:esp8266_4MB_S]
 extends = env:d1_mini
@@ -1456,13 +1460,17 @@ build_flags = ${common.build_flags_esp8266}
  ;; -D WLED_DISABLE_MQTT ;    RAM 216 bytes; FLASH 16496 bytes
  ;; -D WLED_DISABLE_INFRARED ;RAM 136 bytes; FLASH 24492 bytes
  ; -D WLED_DISABLE_2D
+  ;; -D WLED_DISABLE_PARTICLESYSTEM1D
+  -D WLED_DISABLE_PARTICLESYSTEM2D ;; exceeds flash size limit
+  -D WLEDMM_SAVE_FLASH
+  -D WLED_USE_UNREAL_MATH
  ; -UWLED_USE_MY_CONFIG
  ${common_mm.NetDebug_build_flags}
  ; -D WLED_DEBUG
 ; monitor_filters = esp8266_exception_decoder
 ;; lib_ignore = IRremoteESP8266 ; use with WLED_DISABLE_INFRARED for faster compilation
-; RAM:   [======    ]  60.8% (used 49824 bytes from 81920 bytes)
-; Flash: [========  ]  83.3% (used 869779 bytes from 1044464 bytes)
+; RAM:   [======    ]  61.3% (used 50220 bytes from 81920 bytes)
+; Flash: [========= ]  89.5% (used 934483 bytes from 1044464 bytes)
 [env:esp8266_4MB_M]
 extends = env:d1_mini
 upload_speed = 460800 ;115200
@@ -1472,6 +1480,10 @@ build_flags = ${common.build_flags_esp8266}
  -D WLED_DISABLE_ALEXA
  -D WLED_DISABLE_HUESYNC
  -D WLED_DISABLE_LOXONE
+  -D WLEDMM_SAVE_FLASH
+  -D WLED_USE_UNREAL_MATH
+  ;; -D WLED_DISABLE_PARTICLESYSTEM1D
+  ;; -D WLED_DISABLE_PARTICLESYSTEM2D ;; exceeds flash size limit
  ; -D USERMOD_AUDIOREACTIVE
  ; -UWLED_USE_MY_CONFIG
  ; -D USERMOD_PIRSWITCH
@@ -1492,8 +1504,8 @@ lib_deps = ${esp8266.lib_deps}
  OneWire@~2.3.5 ; used for USERMOD_FOUR_LINE_DISPLAY and USERMOD_DALLASTEMPERATURE
  olikraus/U8g2 @ ^2.28.8 ; used for USERMOD_FOUR_LINE_DISPLAY 
  ElectronicCats/MPU6050 @ 0.6.0 ; used for USERMOD_MPU6050_IMU
-; RAM:   [======    ]  63.0% (used 51632 bytes from 81920 bytes)
-; Flash: [========= ]  88.5% (used 924179 bytes from 1044464 bytes)
+; RAM:   [======    ]  63.0% (used 51608 bytes from 81920 bytes)
+; Flash: [========= ]  94.9% (used 991039 bytes from 1044464 bytes)

 ; Blaz env (for reference purposes)
 [env:d1_mini_temp]
@@ -1503,7 +1515,6 @@ build_flags = ${common.build_flags_esp8266} -D WLED_RELEASE_NAME=ESP8266
  -D WLED_DISABLE_ALEXA
  -D WLED_DISABLE_HUESYNC
  -D WLED_DISABLE_LOXONE
-  -D WLED_DISABLE_AUDIO ;WLEDMM not used anywhere
  -D WLED_ENABLE_SIMPLE_UI
  -D USERMOD_FOUR_LINE_DISPLAY
  -D USE_ALT_DISPlAY
@@ -1540,6 +1551,10 @@ build_flags = ${common.build_flags_esp8266}
  -D WLED_DISABLE_ALEXA
  -D WLED_DISABLE_HUESYNC
  ; -D WLED_DEBUG ${common.debug_flags} ;; un-comment for debug messages
+  ;; -D WLED_DISABLE_PARTICLESYSTEM1D
+  ;; -D WLED_DISABLE_PARTICLESYSTEM2D ;; exceeds flash size limit
+  -D WLEDMM_SAVE_FLASH
+  ;; -D WLED_USE_UNREAL_MATH
  ${common_mm.NetDebug_build_flags}
  ;; -D WLED_DISABLE_ESPNOW  ;; might help in case of WiFi connectivity problems
  ; -D WLED_DISABLE_LOXONE ;  FLASH 1272 bytes
@@ -1551,8 +1566,8 @@ build_flags = ${common.build_flags_esp8266}
  ; -UWLED_USE_MY_CONFIG
 monitor_filters = esp8266_exception_decoder
 ; lib_ignore = IRremoteESP8266 ; use with WLED_DISABLE_INFRARED for faster compilation
-; RAM:   [======    ]  59.3% (used 48616 bytes from 81920 bytes)
-; Flash: [========  ]  77.0% (used 804236 bytes from 1044464 bytes)
+; RAM:   [======    ]  61.5% (used 50400 bytes from 81920 bytes)
+; Flash: [========= ]  90.1% (used 941059 bytes from 1044464 bytes)

 [env:esp8266pro_16MB_M]
 extends = env:d1_mini
@@ -1572,7 +1587,11 @@ build_flags = ${common.build_flags_esp8266}
  -D WLED_DISABLE_LOXONE
  ; -D USERMOD_AUDIOREACTIVE
  ; -D USERMOD_ARTIFX ; to be done
-  ;; -D WLED_DISABLE_ESPNOW  ;; might help in case of WiFi connectivity problems
+  -D WLED_DISABLE_ESPNOW  ;; might help in case of WiFi connectivity problems
+  ;; -D WLED_DISABLE_PARTICLESYSTEM1D
+  -D WLED_DISABLE_PARTICLESYSTEM2D ;; exceeds flash size limit
+  -D WLEDMM_SAVE_FLASH
+  ;; -D WLED_USE_UNREAL_MATH
  -D USERMOD_PIRSWITCH
  -D USERMOD_DALLASTEMPERATURE ;; disabled because it hangs during usermod setup on -S3 (autodetect broken?)
  -D USERMOD_MULTI_RELAY
@@ -1587,8 +1606,8 @@ lib_deps = ${esp8266.lib_deps}
  OneWire@~2.3.5 ; used for USERMOD_FOUR_LINE_DISPLAY and USERMOD_DALLASTEMPERATURE
  olikraus/U8g2 @ ^2.28.8 ; used for USERMOD_FOUR_LINE_DISPLAY 
  ElectronicCats/MPU6050 @ 0.6.0 ; used for USERMOD_MPU6050_IMU
-; RAM:   [======    ]  63.8% (used 52272 bytes from 81920 bytes)
-; Flash: [========= ]  90.4% (used 944487 bytes from 1044464 bytes)
+; RAM:   [======    ]  62.9% (used 51508 bytes from 81920 bytes)
+; Flash: [==========]  96.2% (used 1005115 bytes from 1044464 bytes)

 [env:esp01_1MB_S]
 board = esp01_1m
@@ -1598,17 +1617,21 @@ board_build.ldscript = ${common.ldscript_1m128k}
 build_unflags = ${common.build_unflags}
 build_flags = ${common.build_flags_esp8266} -D WLED_DISABLE_OTA
  -D WLED_RELEASE_NAME=esp01_1MB_S
+  -D WLED_USE_UNREAL_MATH ;; may cause some wrong sunset/sunrise times, but saves 7064 bytes FLASH and 975 bytes RAM
  -D WLED_DISABLE_ALEXA
  -D WLED_DISABLE_HUESYNC
  -D WLED_DISABLE_ESPNOW   ;; exceeds flash size limits
  -D WLED_DISABLE_INFRARED ;; exceeds flash size limits
  -D WLED_DISABLE_PARTICLESYSTEM1D ;; exceeds flash size limit
  -D WLED_DISABLE_PARTICLESYSTEM2D ;; exceeds flash size limit
-
+  -D WLEDMM_SAVE_FLASH
+  ;; -D WLED_DISABLE_LOXONE
+  ;; -D WLED_DISABLE_MQTT
+  ;; -D WLED_DISABLE_2D ;; last resort to reduce flash size
 lib_deps = ${esp8266.lib_deps}
 lib_ignore = IRremoteESP8266 ; use with WLED_DISABLE_INFRARED for faster compilation
-; RAM:   [======    ]  60.6% (used 49616 bytes from 81920 bytes)
-; Flash: [==========]  99.8% (used 890835 bytes from 892912 bytes)
+; RAM:   [======    ]  60.3% (used 49408 bytes from 81920 bytes)
+; Flash: [==========]  98.6% (used 880331 bytes from 892912 bytes)


 # ------------------------------------------------------------------------------
--- a/wled00/fcn_declare.h
+++ b/wled00/fcn_declare.h
@@ -484,16 +484,19 @@ uint8_t cos8_t(uint8_t theta);
 float sin_approx(float theta); // uses integer math (converted to float), accuracy +/-0.0015 (compared to sinf())
 float cos_approx(float theta);
 float tan_approx(float x);
-//float atan2_t(float y, float x);
-//float acos_t(float x);
-//float asin_t(float x);
-//template <typename T> T atan_t(T x);
-//float floor_t(float x);
-//float fmod_t(float num, float denom);
+#if defined(WLED_USE_UNREAL_MATH)
+float atan2_t(float y, float x);
+float acos_t(float x);
+float asin_t(float x);
+template <typename T> T atan_t(T x);
+float floor_t(float x);
+float fmod_t(float num, float denom);
+#endif
 #define sin_t sin_approx
 #define cos_t cos_approx
 #define tan_t tan_approx

+#if !defined(WLED_USE_UNREAL_MATH)
 #include <math.h>  // standard math functions. use a lot of flash
 #define atan2_t atan2f
 #define asin_t asinf
@@ -501,6 +504,7 @@ float tan_approx(float x);
 #define atan_t atanf
 #define fmod_t fmodf
 #define floor_t floorf
+#endif
 /*
 #define sin_t sinf
 #define cos_t cosf
--- a/wled00/wled_math.cpp
+++ b/wled00/wled_math.cpp
@@ -110,7 +110,7 @@ float tan_approx(float x) {
  return res;
 }

-#if 0  // WLEDMM we prefer libm functions that are accurate and fast.
+#if defined(WLED_USE_UNREAL_MATH)  // WLEDMM we prefer libm functions that are accurate and fast.
 #define ATAN2_CONST_A 0.1963f
 #define ATAN2_CONST_B 0.9817f