From a03937988aeb1f33cdf491bd5ede3c0dc3eb4bed Mon Sep 17 00:00:00 2001
From: fvanroie <cpt_jack@msn.com>
Date: Mon, 16 Nov 2020 17:22:30 +0100
Subject: [PATCH] Make LV_MEM_SIZE configurable

---
 include/lv_conf.h | 13 ++++++++-----
 platformio.ini    |  8 ++++++--
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/include/lv_conf.h b/include/lv_conf.h
index 9cba6751..54de85b7 100644
--- a/include/lv_conf.h
+++ b/include/lv_conf.h
@@ -11,7 +11,7 @@
 
 #include <stdint.h>
 
-#ifdef ESP8266
+#if defined(ARDUINO_ARCH_ESP8266)
 #define LV_HIGH_RESOURCE_MCU  0
 #endif
 
@@ -76,11 +76,14 @@ typedef int16_t lv_coord_t;
 #define LV_MEM_CUSTOM      0
 #if LV_MEM_CUSTOM == 0
 /* Size of the memory used by `lv_mem_alloc` in bytes (>= 2kB)*/
-#ifdef ESP8266
-#  define LV_MEM_SIZE    (10 * 1024U) // 12KB
-#endif
+
 #ifndef LV_MEM_SIZE
-#  define LV_MEM_SIZE    (20 * 1024U)  // 48KB
+
+#if defined(ARDUINO_ARCH_ESP8266)
+#  define LV_MEM_SIZE    (10 * 1024U) // Minimum 10 Kb
+#else
+#  define LV_MEM_SIZE    (20 * 1024U)  // 20Kb is much better
+#endif
 #endif
 
 /* Complier prefix for a big array declaration */
diff --git a/platformio.ini b/platformio.ini
index 51ab581b..1a0500d1 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -85,8 +85,10 @@ extra_scripts = move-rename-firmware.py ; pre:extra_script.py
 [flags]
 esp8266_flags=
     ${env.build_flags}
-    -D HTTP_UPLOAD_BUFLEN=640      ; lower http upload buffer
-    -D MQTT_MAX_PACKET_SIZE=1024   ; longer PubSubClient messages
+    -D HTTP_UPLOAD_BUFLEN=640       ; lower http upload buffer
+    -D MQTT_MAX_PACKET_SIZE=1024    ; longer PubSubClient messages
+; -- lvgl build options -----------------------------
+    -D LV_MEM_SIZE=(10*1024U)       ; 10kB lvgl memory
 ; -- hasp-lvgl build options ------------------------
     -D HASP_USE_WIFI=1
     -D HASP_USE_MQTT=1
@@ -104,6 +106,8 @@ esp32_flags=
     ${env.build_flags}
     -D HTTP_UPLOAD_BUFLEN=1024      ; lower http upload buffer
     -D MQTT_MAX_PACKET_SIZE=2048    ; longer PubSubClient messages
+; -- lvgl build options -----------------------------
+    -D LV_MEM_SIZE=(20*1024U)       ; 20kB lvgl memory
 ; -- hasp-lvgl build options ------------------------
     -D HASP_USE_MQTT=1
     -D HASP_USE_HTTP=1