diff --git a/demo/env/stm32f10x/rtt/components/easyflash/port/ef_port.c b/demo/env/stm32f10x/rtt/components/easyflash/port/ef_port.c
index f0e0007..0729666 100644
--- a/demo/env/stm32f10x/rtt/components/easyflash/port/ef_port.c
+++ b/demo/env/stm32f10x/rtt/components/easyflash/port/ef_port.c
@@ -237,10 +237,9 @@ void ef_print(const char *format, ...) {
 #if defined(RT_USING_FINSH) && defined(FINSH_USING_MSH)
 #include <finsh.h>
 #if defined(EF_USING_ENV)
-void setenv(uint8_t argc, char **argv) {
+static void setenv(uint8_t argc, char **argv) {
     uint8_t i;
-    char c_value = NULL;
-    char *value = &c_value;
+
     if (argc > 3) {
         /* environment variable value string together */
         for (i = 0; i < argc - 2; i++) {
@@ -248,26 +247,26 @@ void setenv(uint8_t argc, char **argv) {
         }
     }
     if (argc == 1) {
-        ef_set_env(value, value);
+        rt_kprintf("Please input: setenv <key> [value]\n");
     } else if (argc == 2) {
-        ef_set_env(argv[1], value);
+        ef_set_env(argv[1], NULL);
     } else {
         ef_set_env(argv[1], argv[2]);
     }
 }
 MSH_CMD_EXPORT(setenv, Set an envrionment variable.);
 
-void printenv(uint8_t argc, char **argv) {
+static void printenv(uint8_t argc, char **argv) {
     ef_print_env();
 }
 MSH_CMD_EXPORT(printenv, Print all envrionment variables.);
 
-void saveenv(uint8_t argc, char **argv) {
+static void saveenv(uint8_t argc, char **argv) {
     ef_save_env();
 }
 MSH_CMD_EXPORT(saveenv, Save all envrionment variables to flash.);
 
-void getvalue(uint8_t argc, char **argv) {
+static void getvalue(uint8_t argc, char **argv) {
     char *value = NULL;
     value = ef_get_env(argv[1]);
     if (value) {
@@ -278,7 +277,7 @@ void getvalue(uint8_t argc, char **argv) {
 }
 MSH_CMD_EXPORT(getvalue, Get an envrionment variable by name.);
 
-void resetenv(uint8_t argc, char **argv) {
+static void resetenv(uint8_t argc, char **argv) {
     ef_env_set_default();
 }
 MSH_CMD_EXPORT(resetenv, Reset all envrionment variable to default.);
diff --git a/demo/env/stm32f4xx/components/easyflash/port/ef_port.c b/demo/env/stm32f4xx/components/easyflash/port/ef_port.c
index 7eed62a..eb67890 100644
--- a/demo/env/stm32f4xx/components/easyflash/port/ef_port.c
+++ b/demo/env/stm32f4xx/components/easyflash/port/ef_port.c
@@ -368,10 +368,9 @@ void ef_print(const char *format, ...) {
 #if defined(RT_USING_FINSH) && defined(FINSH_USING_MSH)
 #include <finsh.h>
 #if defined(EF_USING_ENV)
-void setenv(uint8_t argc, char **argv) {
+static void setenv(uint8_t argc, char **argv) {
     uint8_t i;
-    char c_value = NULL;
-    char *value = &c_value;
+
     if (argc > 3) {
         /* environment variable value string together */
         for (i = 0; i < argc - 2; i++) {
@@ -379,26 +378,26 @@ void setenv(uint8_t argc, char **argv) {
         }
     }
     if (argc == 1) {
-        ef_set_env(value, value);
+        rt_kprintf("Please input: setenv <key> [value]\n");
     } else if (argc == 2) {
-        ef_set_env(argv[1], value);
+        ef_set_env(argv[1], NULL);
     } else {
         ef_set_env(argv[1], argv[2]);
     }
 }
 MSH_CMD_EXPORT(setenv, Set an envrionment variable.);
 
-void printenv(uint8_t argc, char **argv) {
+static void printenv(uint8_t argc, char **argv) {
     ef_print_env();
 }
 MSH_CMD_EXPORT(printenv, Print all envrionment variables.);
 
-void saveenv(uint8_t argc, char **argv) {
+static void saveenv(uint8_t argc, char **argv) {
     ef_save_env();
 }
 MSH_CMD_EXPORT(saveenv, Save all envrionment variables to flash.);
 
-void getvalue(uint8_t argc, char **argv) {
+static void getvalue(uint8_t argc, char **argv) {
     char *value = NULL;
     value = ef_get_env(argv[1]);
     if (value) {
@@ -409,7 +408,7 @@ void getvalue(uint8_t argc, char **argv) {
 }
 MSH_CMD_EXPORT(getvalue, Get an envrionment variable by name.);
 
-void resetenv(uint8_t argc, char **argv) {
+static void resetenv(uint8_t argc, char **argv) {
     ef_env_set_default();
 }
 MSH_CMD_EXPORT(resetenv, Reset all envrionment variable to default.);
diff --git a/easyflash/inc/easyflash.h b/easyflash/inc/easyflash.h
index 641875d..8bb3115 100644
--- a/easyflash/inc/easyflash.h
+++ b/easyflash/inc/easyflash.h
@@ -76,8 +76,8 @@ if (!(EXPR))                                                                  \
 #endif
 
 /* EasyFlash software version number */
-#define EF_SW_VERSION                  "3.2.1"
-#define EF_SW_VERSION_NUM              0x30201
+#define EF_SW_VERSION                  "3.2.2"
+#define EF_SW_VERSION_NUM              0x30202
 
 typedef struct _ef_env {
     char *key;