diff --git a/APP_Framework/Framework/transform_layer/xizi/user_api/posix_support/timer.c b/APP_Framework/Framework/transform_layer/xizi/user_api/posix_support/timer.c
index a157dc11a..a13523237 100644
--- a/APP_Framework/Framework/transform_layer/xizi/user_api/posix_support/timer.c
+++ b/APP_Framework/Framework/transform_layer/xizi/user_api/posix_support/timer.c
@@ -107,12 +107,13 @@ int timer_settime(timer_t timerid, int flags, const struct itimerspec *restrict
     //reference from RTT
     /* calculate timer period(tick);  To avoid lost of accuracy, because "TICK_PER_SECOND" maybe 100, 1000, 1024 and so on.
         *
-        *          tick                        nanosecond                          nanosecond * TICK_PER_SECOND
+        *          tick                        millisecond                          millisecond * TICK_PER_SECOND
         *  ------------------------- = --------------------------  --->  tick = -------------------------------------
-        *    TICK_PER_SECOND           NANOSECOND_PER_SECOND                         NANOSECOND_PER_SECOND
+        *    TICK_PER_SECOND           MILLISECOND_PER_SECOND                         MILLISECOND_PER_SECOND
         *
         */
-    uint32_t ticks = (value->it_interval.tv_sec * TICK_PER_SECOND) + (value->it_interval.tv_nsec / 1000000000) * TICK_PER_SECOND;
+    uint32_t ms_value = value->it_interval.tv_nsec / 1000000;
+    uint32_t ticks = (value->it_interval.tv_sec * TICK_PER_SECOND) + (ms_value * TICK_PER_SECOND) / 1000;
 
     UserTimerModify(timerid, ticks);
 
diff --git a/APP_Framework/lib/lorawan/lora_radio_driver b/APP_Framework/lib/lorawan/lora_radio_driver
index a400879b1..be37aa885 160000
--- a/APP_Framework/lib/lorawan/lora_radio_driver
+++ b/APP_Framework/lib/lorawan/lora_radio_driver
@@ -1 +1 @@
-Subproject commit a400879b133bdce5051f7a550a4a05bfdbceb26c
+Subproject commit be37aa885ca710ddcdf6ec0f671f0d566da9cb6f
diff --git a/Ubiquitous/XiZi_IIoT/board/aiit-arm32-board/third_party_driver/spi/connect_lora_spi.c b/Ubiquitous/XiZi_IIoT/board/aiit-arm32-board/third_party_driver/spi/connect_lora_spi.c
index 76cdb61db..c8255cf7a 100644
--- a/Ubiquitous/XiZi_IIoT/board/aiit-arm32-board/third_party_driver/spi/connect_lora_spi.c
+++ b/Ubiquitous/XiZi_IIoT/board/aiit-arm32-board/third_party_driver/spi/connect_lora_spi.c
@@ -22,7 +22,7 @@
 
 static struct HardwareDev *g_spi_lora_dev;
 static BusType buspin;
-tRadioDriver *Radio = NONE;
+static tRadioDriver *Radio = NONE;
 void SX1276InitIo(void)
 {
     struct PinParam PinCfg;
diff --git a/Ubiquitous/XiZi_IIoT/board/aiit-riscv64-board/third_party_driver/spi/connect_lora_spi.c b/Ubiquitous/XiZi_IIoT/board/aiit-riscv64-board/third_party_driver/spi/connect_lora_spi.c
index 5d3e7c7a2..37c969cff 100644
--- a/Ubiquitous/XiZi_IIoT/board/aiit-riscv64-board/third_party_driver/spi/connect_lora_spi.c
+++ b/Ubiquitous/XiZi_IIoT/board/aiit-riscv64-board/third_party_driver/spi/connect_lora_spi.c
@@ -22,7 +22,7 @@
 
 static struct HardwareDev *g_spi_lora_dev;
 static BusType buspin;
-tRadioDriver *Radio = NONE;
+static tRadioDriver *Radio = NONE;
 void SX1276InitIo(void)
 {
     struct PinParam PinCfg;
diff --git a/Ubiquitous/XiZi_IIoT/board/hc32f4a0/third_party_driver/spi/connect_lora_spi.c b/Ubiquitous/XiZi_IIoT/board/hc32f4a0/third_party_driver/spi/connect_lora_spi.c
index baa130571..c949d38e7 100644
--- a/Ubiquitous/XiZi_IIoT/board/hc32f4a0/third_party_driver/spi/connect_lora_spi.c
+++ b/Ubiquitous/XiZi_IIoT/board/hc32f4a0/third_party_driver/spi/connect_lora_spi.c
@@ -25,7 +25,7 @@
 #define LORA_RST_PIN                      (GPIO_PIN_02)
 
 static struct HardwareDev *g_spi_lora_dev;
-tRadioDriver *Radio = NONE;
+static tRadioDriver *Radio = NONE;
 
 void SX1276InitIo(void)
 {