1.优化代码。

bsp/wch/ch32v30x/mr_board.h

@@ -39,6 +39,14 @@ extern "C" {
 #define MR_USING_UART8
 #define MR_CFG_UART8_GROUP              1
 
+#define MR_USING_SPI1
+#define MR_USING_SPI2
+#define MR_USING_SPI3
+
+#define MR_CFG_SPI1_GROUP               1
+#define MR_CFG_SPI2_GROUP               1
+#define MR_CFG_SPI3_GROUP               1
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */

inc/mr_api.h

@@ -50,6 +50,7 @@ void mr_auto_init(void);
  */
 int mr_printf_output(const char *buf, size_t size);
 int mr_printf(const char *fmt, ...);
+const char *mr_strerror(int err);
 /** @} */
 
 /**

inc/mr_def.h

@@ -113,10 +113,10 @@ typedef int (*mr_init_fn_t)(void);
 #define MR_NULL                         ((void *)0)
 
 /**
- * @brief Enable/Disable.
+ * @brief Disable/enable.
  */
-#define MR_ENABLE                       (1)                         /**< Enable */
 #define MR_DISABLE                      (0)                         /**< Disable */
+#define MR_ENABLE                       (1)                         /**< Enable */
 
 /**
  * @brief Double linked list structure.

src/dev.c

@@ -166,7 +166,7 @@ MR_INLINE int dev_register(struct mr_dev *dev, const char *name)
 {
     if (dev_find_or_register(name, dev, MR_REGISTER) != MR_NULL)
     {
-        mr_log("%s dev register", name);
+        mr_log("%s register", name);
         return MR_EOK;
     }
     return MR_EINVAL;

src/service.c

@@ -147,6 +147,38 @@ int mr_printf(const char *fmt, ...)
     return ret;
 }
 
+/**
+ * @brief This function get the error message.
+ *
+ * @param err The error code.
+ *
+ * @return The error message.
+ */
+const char *mr_strerror(int err)
+{
+    switch (err)
+    {
+        case MR_EOK:
+            return "no error";
+        case MR_ENOMEM:
+            return "no enough memory";
+        case MR_EIO:
+            return "I/O error";
+        case MR_ENOTFOUND:
+            return "not found";
+        case MR_EBUSY:
+            return "resource busy";
+        case MR_EEXIST:
+            return "exists";
+        case MR_ENOTSUP:
+            return "operation not supported";
+        case MR_EINVAL:
+            return "invalid argument";
+        default:
+            return "unknown error";
+    }
+}
+
 /**
  * @brief This function initialize the ringbuffer.
  *