Fix logging

Author: lupyuen

README.md

@@ -470,7 +470,7 @@ Let's use the Zig Compiler to compile `lv_label.c` from C to WebAssembly....
 
 - Add `-DFAR=` (because we won't need Far Pointers)
 
-- Add `-DLV_USE_LOG` (to enable logging)
+- Add `-DLV_USE_LOG=1` (to enable logging)
 
 - Add `-DLV_LOG_LEVEL=LV_LOG_LEVEL_TRACE` (for detailed logging)
 
@@ -502,7 +502,7 @@ zig cc \
   -rdynamic \
   -lc \
   -DFAR= \
-  -DLV_USE_LOG \
+  -DLV_USE_LOG=1 \
   -DLV_LOG_LEVEL=LV_LOG_LEVEL_TRACE \
   -DLV_MEM_SIZE=1000000 \
   "-DLV_ASSERT_HANDLER={void lv_assert_handler(void); lv_assert_handler();}" \
@@ -561,7 +561,7 @@ Let's ask Zig Compiler to link `lv_label.o` with our Zig LVGL App [`lvglwasm.zig
     -rdynamic \
     -lc \
     -DFAR= \
-    -DLV_USE_LOG \
+    -DLV_USE_LOG=1 \
     -DLV_LOG_LEVEL=LV_LOG_LEVEL_TRACE \
     -DLV_MEM_SIZE=1000000 \
     "-DLV_ASSERT_HANDLER={void lv_assert_handler(void); lv_assert_handler();}" \

build.sh

@@ -90,8 +90,9 @@ function build_zig {
     -rdynamic \
     -lc \
     -DFAR= \
-    -DLV_USE_LOG \
+    -DLV_USE_LOG=1 \
     -DLV_LOG_LEVEL=LV_LOG_LEVEL_TRACE \
+    -DLV_LOG_TRACE_OBJ_CREATE=1 \
     -DLV_MEM_SIZE=1000000 \
     "-DLV_ASSERT_HANDLER={void lv_assert_handler(void); lv_assert_handler();}" \
     -I . \
@@ -223,8 +224,9 @@ function compile_lvgl {
     -rdynamic \
     -lc \
     -DFAR= \
-    -DLV_USE_LOG \
+    -DLV_USE_LOG=1 \
     -DLV_LOG_LEVEL=LV_LOG_LEVEL_TRACE \
+    -DLV_LOG_TRACE_OBJ_CREATE=1 \
     -DLV_MEM_SIZE=1000000 \
     "-DLV_ASSERT_HANDLER={void lv_assert_handler(void); lv_assert_handler();}" \
     \

lvglwasm.wasm

@@ -60,7 +60,9 @@ pub export fn lv_demo_widgets() void {
     );
 
     // Register the Display Driver
+    debug("before lv_disp_drv_register", .{}); ////
     const disp = c.lv_disp_drv_register(disp_drv);
+    debug("after lv_disp_drv_register", .{}); ////
     _ = disp;
 
     // Create the widgets for display (with Zig Wrapper)
@@ -74,7 +76,9 @@ pub export fn lv_demo_widgets() void {
     // TODO: Call `lv_timer_handler()` every few milliseconds to handle LVGL related tasks
     var i: usize = 0;
     while (i < 10) : (i += 1) {
+        debug("lv_timer_handler: start", .{});
         _ = c.lv_timer_handler();
+        debug("lv_timer_handler: end", .{});
     }
 }