LVGL 库提交

2026-08-30 08:57:07 +08:00
parent 26c9098630
commit e2f199c6bf
1056 changed files with 556743 additions and 45 deletions
@@ -0,0 +1,149 @@
+/**
+ * @file lv_log.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_log.h"
+#if LV_USE_LOG
+
+#include "../misc/lv_types.h"
+#include "../stdlib/lv_sprintf.h"
+#include "../stdlib/lv_mem.h"
+#include "../stdlib/lv_string.h"
+#include "../tick/lv_tick.h"
+#include "../core/lv_global.h"
+
+#if LV_LOG_PRINTF
+    #include <stdio.h>
+#endif
+
+/*********************
+ *      DEFINES
+ *********************/
+#if LV_LOG_USE_TIMESTAMP
+    #define last_log_time LV_GLOBAL_DEFAULT()->log_last_log_time
+#endif
+#define custom_print_cb LV_GLOBAL_DEFAULT()->custom_log_print_cb
+
+#if LV_LOG_USE_TIMESTAMP
+    #define LOG_TIMESTAMP_FMT  "\t(%" LV_PRIu32 ".%03" LV_PRIu32 ", +%" LV_PRIu32 ")\t"
+    #define LOG_TIMESTAMP_EXPR t / 1000, t % 1000, t - last_log_time,
+#else
+    #define LOG_TIMESTAMP_FMT
+    #define LOG_TIMESTAMP_EXPR
+#endif
+
+#if LV_LOG_USE_FILE_LINE
+    #define LOG_FILE_LINE_FMT " %s:%d"
+    #define LOG_FILE_LINE_EXPR , &file[p], line
+#else
+    #define LOG_FILE_LINE_FMT
+    #define LOG_FILE_LINE_EXPR
+#endif
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_log_register_print_cb(lv_log_print_g_cb_t print_cb)
+{
+    custom_print_cb = print_cb;
+}
+
+void lv_log_add(lv_log_level_t level, const char * file, int line, const char * func, const char * format, ...)
+{
+    if(level >= LV_LOG_LEVEL_NUM) return; /*Invalid level*/
+
+    if(level >= LV_LOG_LEVEL) {
+        va_list args;
+        va_start(args, format);
+
+#if LV_LOG_USE_FILE_LINE
+        /*Use only the file name not the path*/
+        size_t p;
+        for(p = lv_strlen(file); p > 0; p--) {
+            if(file[p] == '/' || file[p] == '\\') {
+                p++;    /*Skip the slash*/
+                break;
+            }
+        }
+#else
+        LV_UNUSED(file);
+        LV_UNUSED(line);
+#endif
+
+#if LV_LOG_USE_TIMESTAMP
+        uint32_t t = lv_tick_get();
+#endif
+        static const char * lvl_prefix[] = {"Trace", "Info", "Warn", "Error", "User"};
+
+        if(custom_print_cb) {
+            char buf[512];
+            char msg[256];
+            lv_vsnprintf(msg, sizeof(msg), format, args);
+            lv_snprintf(buf, sizeof(buf), "[%s]" LOG_TIMESTAMP_FMT " %s: %s" LOG_FILE_LINE_FMT "\n",
+                        lvl_prefix[level], LOG_TIMESTAMP_EXPR func, msg LOG_FILE_LINE_EXPR);
+            custom_print_cb(level, buf);
+        }
+#if LV_LOG_PRINTF
+        else {
+            printf("[%s]" LOG_TIMESTAMP_FMT " %s: ",
+                   lvl_prefix[level], LOG_TIMESTAMP_EXPR func);
+            vprintf(format, args);
+            printf(LOG_FILE_LINE_FMT "\n" LOG_FILE_LINE_EXPR);
+            fflush(stdout);
+        }
+#endif
+
+#if LV_LOG_USE_TIMESTAMP
+        last_log_time = t;
+#endif
+        va_end(args);
+    }
+}
+
+void lv_log(const char * format, ...)
+{
+    if(LV_LOG_LEVEL >= LV_LOG_LEVEL_NONE) return; /* disable log */
+
+    va_list args;
+    va_start(args, format);
+
+    if(custom_print_cb) {
+        char buf[512];
+        lv_vsnprintf(buf, sizeof(buf), format, args);
+        custom_print_cb(LV_LOG_LEVEL_USER, buf);
+    }
+#if LV_LOG_PRINTF
+    else {
+        vprintf(format, args);
+    }
+#endif
+
+    va_end(args);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+#endif /*LV_USE_LOG*/