feat(nuttx_profiler): support trace to file (#8674)

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>

Kconfig

@@ -2056,6 +2056,17 @@ menu "LVGL configuration"
 			help
 				Set the step size of the mouse movement in pixels.
 
+		config LV_USE_NUTTX_TRACE_FILE
+			bool "Use NuttX trace file"
+			depends on LV_USE_NUTTX
+			depends on LV_USE_PROFILER_BUILTIN
+			default n
+
+		config LV_NUTTX_TRACE_FILE_PATH
+			depends on LV_USE_NUTTX_TRACE_FILE
+			string "NuttX trace file path"
+			default "/data/lvgl-trace.log"
+
 		config LV_USE_LINUX_DRM
 			bool "Use Linux DRM device"
 			default n

lv_conf_template.h

@@ -1271,6 +1271,13 @@
 
     /** Mouse movement step (pixels) */
     #define LV_USE_NUTTX_MOUSE_MOVE_STEP    1
+
+    /*NuttX trace file and its path*/
+    #define LV_USE_NUTTX_TRACE_FILE 0
+    #if LV_USE_NUTTX_TRACE_FILE
+        #define LV_NUTTX_TRACE_FILE_PATH "/data/lvgl-trace.log"
+    #endif
+
 #endif
 
 /** Driver for /dev/dri/card */

src/drivers/nuttx/lv_nuttx_entry.c

@@ -111,6 +111,10 @@ void lv_nuttx_dsc_init(lv_nuttx_dsc_t * dsc)
 #if LV_USE_NUTTX_MOUSE
     dsc->mouse_path = "/dev/mouse0";
 #endif
+
+#if LV_USE_NUTTX_TRACE_FILE
+    dsc->trace_path = LV_NUTTX_TRACE_FILE_PATH;
+#endif
 }
 
 void lv_nuttx_init(const lv_nuttx_dsc_t * dsc, lv_nuttx_result_t * result)
@@ -131,6 +135,9 @@ void lv_nuttx_init(const lv_nuttx_dsc_t * dsc, lv_nuttx_result_t * result)
 
 #if LV_USE_PROFILER && LV_USE_PROFILER_BUILTIN
     lv_nuttx_profiler_init();
+#if LV_USE_NUTTX_TRACE_FILE
+    lv_nuttx_profiler_set_file(dsc->trace_path);
+#endif
 #endif
 
     if(result) {
@@ -254,6 +261,9 @@ void lv_nuttx_deinit(lv_nuttx_result_t * result)
         lv_nuttx_cache_deinit();
         lv_nuttx_image_cache_deinit();
 
+#if LV_USE_PROFILER && LV_USE_PROFILER_BUILTIN
+        lv_nuttx_profiler_deinit();
+#endif
         lv_free(nuttx_ctx_p);
         nuttx_ctx_p = NULL;
     }

src/drivers/nuttx/lv_nuttx_entry.h

@@ -36,6 +36,7 @@ typedef struct {
     const char * input_path;
     const char * utouch_path;
     const char * mouse_path;
+    const char * trace_path;
 } lv_nuttx_dsc_t;
 
 typedef struct {
@@ -47,6 +48,7 @@ typedef struct {
 
 typedef struct _lv_nuttx_ctx_t {
     void * image_cache;
+    int trace_fd;
 } lv_nuttx_ctx_t;
 
 /**********************

src/drivers/nuttx/lv_nuttx_profiler.c

@@ -13,12 +13,15 @@
 #if LV_USE_NUTTX && LV_USE_PROFILER && LV_USE_PROFILER_BUILTIN
 
 #include <nuttx/arch.h>
+#include <fcntl.h>
 #include <stdio.h>
 
 /*********************
  *      DEFINES
  *********************/
 
+#define trace_fd           (LV_GLOBAL_DEFAULT()->nuttx_ctx->trace_fd)
+
 #define TICK_TO_NSEC(tick) ((tick) * 1000 / cpu_freq)
 
 /**********************
@@ -55,6 +58,10 @@ void lv_nuttx_profiler_init(void)
     }
     LV_LOG_USER("CPU frequency: %" LV_PRIu32 " MHz", cpu_freq);
 
+#if LV_USE_NUTTX_TRACE_FILE
+    trace_fd = -1;
+#endif
+
     lv_profiler_builtin_config_t config;
     lv_profiler_builtin_config_init(&config);
     config.tick_per_sec = 1000000000; /* 1 sec = 1000000000 nsec */
@@ -63,6 +70,31 @@ void lv_nuttx_profiler_init(void)
     lv_profiler_builtin_init(&config);
 }
 
+void lv_nuttx_profiler_set_file(const char * file)
+{
+#if LV_USE_NUTTX_TRACE_FILE
+    if(trace_fd >= 0) {
+        close(trace_fd);
+    }
+
+    trace_fd = open(file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+    if(trace_fd < 0) {
+        LV_LOG_ERROR("Failed to open trace file %s, error: %d", file, errno);
+    }
+#endif
+}
+
+void lv_nuttx_profiler_deinit(void)
+{
+    lv_profiler_builtin_uninit();
+#if LV_USE_NUTTX_TRACE_FILE
+    if(trace_fd >= 0) {
+        close(trace_fd);
+    }
+    trace_fd = -1;
+#endif
+}
+
 /**********************
  *   STATIC FUNCTIONS
  **********************/
@@ -90,6 +122,12 @@ static uint64_t tick_get_cb(void)
 
 static void flush_cb(const char * buf)
 {
+#if LV_USE_NUTTX_TRACE_FILE
+    if(trace_fd >= 0) {
+        write(trace_fd, buf, strlen(buf));
+        return;
+    }
+#endif
     printf("%s", buf);
 }
 

src/drivers/nuttx/lv_nuttx_profiler.h

@@ -27,6 +27,8 @@ extern "C" {
  **********************/
 
 void lv_nuttx_profiler_init(void);
+void lv_nuttx_profiler_set_file(const char * file);
+void lv_nuttx_profiler_deinit(void);
 
 /**********************
  *      MACROS

src/lv_conf_internal.h

@@ -4116,6 +4116,25 @@
             #define LV_USE_NUTTX_MOUSE_MOVE_STEP    1
         #endif
     #endif
+
+    /*NuttX trace file and its path*/
+    #ifndef LV_USE_NUTTX_TRACE_FILE
+        #ifdef CONFIG_LV_USE_NUTTX_TRACE_FILE
+            #define LV_USE_NUTTX_TRACE_FILE CONFIG_LV_USE_NUTTX_TRACE_FILE
+        #else
+            #define LV_USE_NUTTX_TRACE_FILE 0
+        #endif
+    #endif
+    #if LV_USE_NUTTX_TRACE_FILE
+        #ifndef LV_NUTTX_TRACE_FILE_PATH
+            #ifdef CONFIG_LV_NUTTX_TRACE_FILE_PATH
+                #define LV_NUTTX_TRACE_FILE_PATH CONFIG_LV_NUTTX_TRACE_FILE_PATH
+            #else
+                #define LV_NUTTX_TRACE_FILE_PATH "/data/lvgl-trace.log"
+            #endif
+        #endif
+    #endif
+
 #endif
 
 /** Driver for /dev/dri/card */