diff --git a/CHIRP/board/timer.c b/CHIRP/board/timer.c
new file mode 100644
index 0000000..5c6fc27
--- /dev/null
+++ b/CHIRP/board/timer.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <stdint.h>
+#include "gd32e23x.h"
+#include "timer.h"
+#include "gd32e23x.h"
+#include "chirp_board_config.h"
+#include "board_init.h"
+
+void timer_config(void)
+{
+    timer_oc_parameter_struct timer_ocinitpara;
+    timer_parameter_struct timer_initpara;
+
+    rcu_periph_clock_enable(RCU_TIMER2);
+    timer_deinit(TIMER2);
+    timer_struct_para_init(&timer_initpara);
+    timer_initpara.prescaler         = (80) - 1;
+    timer_initpara.alignedmode       = TIMER_COUNTER_EDGE;
+    timer_initpara.counterdirection  = TIMER_COUNTER_UP;
+    timer_initpara.period            = 19999;
+    timer_initpara.clockdivision     = TIMER_CKDIV_DIV1;
+    timer_initpara.repetitioncounter = 0;
+    timer_init(TIMER2, &timer_initpara);
+    timer_initpara.period            = 9999;
+    timer_init(TIMER2, &timer_initpara);
+
+    timer_channel_output_struct_para_init(&timer_ocinitpara);
+    timer_ocinitpara.outputstate  = TIMER_CCX_ENABLE;
+    timer_ocinitpara.ocpolarity   = TIMER_OC_POLARITY_HIGH;
+    timer_ocinitpara.ocidlestate  = TIMER_OC_IDLE_STATE_LOW;
+    timer_channel_output_config(TIMER2, TIMER_CH_0, &timer_ocinitpara);
+
+    timer_auto_reload_shadow_enable(TIMER2);
+    timer_interrupt_enable(TIMER2, TIMER_INT_CH0);
+    timer_enable(TIMER2);
+
+    nvic_irq_enable(TIMER2_IRQn, 2);
+}
\ No newline at end of file
diff --git a/CHIRP/board/timer.h b/CHIRP/board/timer.h
new file mode 100644
index 0000000..a03cd3a
--- /dev/null
+++ b/CHIRP/board/timer.h
@@ -0,0 +1,8 @@
+#ifndef TIMER_H
+#define TIMER_H
+
+void timer_config(void);
+
+
+
+#endif /* TIMER_H */
\ No newline at end of file
diff --git a/XLSW_SONIC/Keil_project/Project.uvoptx b/XLSW_SONIC/Keil_project/Project.uvoptx
index 0bd7bab..b05d307 100644
--- a/XLSW_SONIC/Keil_project/Project.uvoptx
+++ b/XLSW_SONIC/Keil_project/Project.uvoptx
@@ -648,6 +648,18 @@
       <RteFlg>0</RteFlg>
       <bShared>0</bShared>
     </File>
+    <File>
+      <GroupNumber>6</GroupNumber>
+      <FileNumber>30</FileNumber>
+      <FileType>1</FileType>
+      <tvExp>0</tvExp>
+      <tvExpOptDlg>0</tvExpOptDlg>
+      <bDave2>0</bDave2>
+      <PathWithFileName>..\..\CHIRP\board\timer.c</PathWithFileName>
+      <FilenameWithoutPath>timer.c</FilenameWithoutPath>
+      <RteFlg>0</RteFlg>
+      <bShared>0</bShared>
+    </File>
   </Group>
 
   <Group>
@@ -658,7 +670,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>30</FileNumber>
+      <FileNumber>31</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -670,7 +682,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>31</FileNumber>
+      <FileNumber>32</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -682,7 +694,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>32</FileNumber>
+      <FileNumber>33</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -694,7 +706,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>33</FileNumber>
+      <FileNumber>34</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -706,7 +718,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>34</FileNumber>
+      <FileNumber>35</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -718,7 +730,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>35</FileNumber>
+      <FileNumber>36</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -730,7 +742,7 @@
     </File>
     <File>
       <GroupNumber>7</GroupNumber>
-      <FileNumber>36</FileNumber>
+      <FileNumber>37</FileNumber>
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
@@ -750,7 +762,7 @@
     <RteFlg>0</RteFlg>
     <File>
       <GroupNumber>8</GroupNumber>
-      <FileNumber>37</FileNumber>
+      <FileNumber>38</FileNumber>
       <FileType>1</FileType>
       <tvExp>1</tvExp>
       <tvExpOptDlg>0</tvExpOptDlg>
diff --git a/XLSW_SONIC/Keil_project/Project.uvprojx b/XLSW_SONIC/Keil_project/Project.uvprojx
index cf192fc..e665939 100644
--- a/XLSW_SONIC/Keil_project/Project.uvprojx
+++ b/XLSW_SONIC/Keil_project/Project.uvprojx
@@ -553,6 +553,11 @@
               <FileType>1</FileType>
               <FilePath>..\..\CHIRP\board\i2c.c</FilePath>
             </File>
+            <File>
+              <FileName>timer.c</FileName>
+              <FileType>1</FileType>
+              <FilePath>..\..\CHIRP\board\timer.c</FilePath>
+            </File>
           </Files>
         </Group>
         <Group>
diff --git a/XLSW_SONIC/gd32e23x_it.c b/XLSW_SONIC/gd32e23x_it.c
index de1be6d..8dab929 100644
--- a/XLSW_SONIC/gd32e23x_it.c
+++ b/XLSW_SONIC/gd32e23x_it.c
@@ -35,6 +35,7 @@ OF SUCH DAMAGE.
 #include "gd32e23x_it.h"
 #include "main.h"
 #include "systick.h"
+#include "chirp_bsp.h"
 
 /*!
     \brief      this function handles NMI exception
@@ -104,4 +105,18 @@ void EXTI4_15_IRQHandler(void){
         exti_interrupt_flag_clear(EXTI_7);
     }
     
+}
+
+/**
+  * @brief  This function handles TIMER2 interrupt request.
+  * @param  None
+  * @retval None
+  */
+void TIMER2_IRQHandler(void)
+{
+    if (SET  == timer_interrupt_flag_get(TIMER2, TIMER_INT_FLAG_CH0))
+    {
+        chbsp_led_toggle(0);
+        timer_interrupt_flag_clear(TIMER2, TIMER_INT_FLAG_CH0);
+    }
 }
\ No newline at end of file
diff --git a/XLSW_SONIC/main.c b/XLSW_SONIC/main.c
index ef9c1d6..c9174ca 100644
--- a/XLSW_SONIC/main.c
+++ b/XLSW_SONIC/main.c
@@ -37,6 +37,7 @@ OF SUCH DAMAGE.
 #include <stdio.h>
 #include "main.h"
 // #include "gd32e230c_eval.h"
+#include "timer.h"
 #include "board_init.h"
 #include "chirp_board_config.h"
 #include "chirp_bsp.h"
@@ -277,10 +278,12 @@ int main(void)
 	}
 	printf("Starting measurements\n");
 
+	timer_config();
+
     while (1)
     {
         handle_data_ready(grp_ptr);
-		chbsp_led_toggle(dev_num);
+		// chbsp_led_toggle(dev_num);
         delay_ms(MEASUREMENT_INTERVAL_MS);
     }
 }