fix for sim build

CMakeLists.txt

@@ -38,7 +38,7 @@ add_subdirectory(libs/mlib)
 add_subdirectory(tactility)
 add_subdirectory(tactility-core)
 
-if (NOT $ENV{ESP_IDF_VERSION})
+if (NOT DEFINED $ENV{ESP_IDF_VERSION})
     add_subdirectory(libs/freertos-kernel)
     target_include_directories(freertos-kernel
         PUBLIC app-sim/src # for FreeRTOSConfig.h

app-sim/src/hardware_config.c

@@ -0,0 +1,16 @@
+/**
+ * Placeholder hardware config.
+ * The real one happens during FreeRTOS startup. See freertos.c and lvgl_*.c
+ */
+#include <stdbool.h>
+#include "hardware_config.h"
+
+
+// TODO: See if we can move the init from FreeRTOS to app_main()?
+static bool init_lvgl() { return true; }
+
+HardwareConfig sim_hardware = {
+    .bootstrap = NULL,
+    .init_lvgl = &init_lvgl,
+};
+

app-sim/src/main.c

@@ -8,8 +8,11 @@
 
 #define TAG "main"
 
+extern HardwareConfig sim_hardware;
+
 _Noreturn void app_main() {
     static const Config config = {
+        .hardware = &sim_hardware,
         .apps = {
             &hello_world_app
         },

tactility-core/CMakeLists.txt

@@ -16,7 +16,7 @@ target_include_directories(tactility-core SYSTEM
     INTERFACE src/
 )
 
-if (ESP_PLATFORM)
+if ($ENV{ESP_IDF_VERSION})
     add_definitions(-DESP_PLATFORM)
     target_link_libraries(tactility-core
         PUBLIC mlib

tactility/CMakeLists.txt

@@ -16,7 +16,7 @@ target_include_directories(tactility
     INTERFACE src/
 )
 
-if (ESP_PLATFORM)
+if ($ENV{ESP_IDF_VERSION})
     add_definitions(-DESP_PLATFORM)
     target_link_libraries(tactility
         PUBLIC tactility-core