实现串口驱动，移植方便

Middlewares/logging/src/logging.c

@@ -0,0 +1,159 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file           : logging.c
+  * @brief          : Logging middleware source file
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+#include "logging.h"
+#include "uart.h"
+#include <stdarg.h>
+
+/* Current logging level */
+static log_level_t current_level = LOG_LEVEL_INFO;
+
+/**
+ * @brief Get log level string
+ * @param level: Log level
+ * @retval Log level string
+ */
+static const char* log_level_to_string(log_level_t level) {
+    switch (level) {
+        case LOG_LEVEL_DEBUG:
+            return "DEBUG";
+        case LOG_LEVEL_INFO:
+            return "INFO";
+        case LOG_LEVEL_WARN:
+            return "WARN";
+        case LOG_LEVEL_ERROR:
+            return "ERROR";
+        case LOG_LEVEL_FATAL:
+            return "FATAL";
+        default:
+            return "UNKNOWN";
+    }
+}
+
+/**
+ * @brief Initialize logging module
+ */
+void logging_init(void) {
+    /* Initialize UART module */
+    uart_init();
+    
+    /* Set default log level */
+    current_level = LOG_LEVEL_INFO;
+    
+    /* Log initialization message */
+    log_info("Logging module initialized\r\n");
+}
+
+/**
+ * @brief Set logging level
+ * @param level: Logging level to set
+ */
+void logging_set_level(log_level_t level) {
+    current_level = level;
+    log_info("Log level set to %s\r\n", log_level_to_string(level));
+}
+
+/**
+ * @brief Get current logging level
+ * @retval Current logging level
+ */
+log_level_t logging_get_level(void) {
+    return current_level;
+}
+
+/**
+ * @brief Internal log function
+ * @param level: Log level
+ * @param format: Format string
+ * @param args: Variable arguments
+ */
+static void log_internal(log_level_t level, const char *format, va_list args) {
+    char buffer[256];
+    int ret;
+    
+    /* Check if log level is enabled */
+    if (level < current_level || level >= LOG_LEVEL_NONE) {
+        return;
+    }
+    
+    /* Format log message */
+    ret = snprintf(buffer, sizeof(buffer), "[%s] ", log_level_to_string(level));
+    if (ret < 0 || ret >= sizeof(buffer)) {
+        return;
+    }
+    
+    /* Append formatted message */
+    ret = vsnprintf(buffer + ret, sizeof(buffer) - ret, format, args);
+    if (ret < 0 || ret >= (int)(sizeof(buffer) - ret)) {
+        return;
+    }
+    
+    /* Send log message over UART */
+    uart_send_string(buffer);
+}
+
+/**
+ * @brief Log debug message
+ * @param format: Format string
+ * @param ...: Variable arguments
+ */
+void log_debug(const char *format, ...) {
+    va_list args;
+    va_start(args, format);
+    log_internal(LOG_LEVEL_DEBUG, format, args);
+    va_end(args);
+}
+
+/**
+ * @brief Log info message
+ * @param format: Format string
+ * @param ...: Variable arguments
+ */
+void log_info(const char *format, ...) {
+    va_list args;
+    va_start(args, format);
+    log_internal(LOG_LEVEL_INFO, format, args);
+    va_end(args);
+}
+
+/**
+ * @brief Log warning message
+ * @param format: Format string
+ * @param ...: Variable arguments
+ */
+void log_warn(const char *format, ...) {
+    va_list args;
+    va_start(args, format);
+    log_internal(LOG_LEVEL_WARN, format, args);
+    va_end(args);
+}
+
+/**
+ * @brief Log error message
+ * @param format: Format string
+ * @param ...: Variable arguments
+ */
+void log_error(const char *format, ...) {
+    va_list args;
+    va_start(args, format);
+    log_internal(LOG_LEVEL_ERROR, format, args);
+    va_end(args);
+}
+
+/**
+ * @brief Log fatal message
+ * @param format: Format string
+ * @param ...: Variable arguments
+ */
+void log_fatal(const char *format, ...) {
+    va_list args;
+    va_start(args, format);
+    log_internal(LOG_LEVEL_FATAL, format, args);
+    va_end(args);
+}