diff --git a/inc/rs485_protocol.h b/inc/rs485_protocol.h
index b358deb..6b8ed06 100644
--- a/inc/rs485_protocol.h
+++ b/inc/rs485_protocol.h
@@ -48,4 +48,6 @@ validation_result_t validate_package_type(uint8_t* data);
 
 validation_result_t validate_data_length(uint8_t* data);
 
+void gd60914_tempture(void);
+
 #endif //RS485_PROTOCOL_H
diff --git a/src/fwdgt.c b/src/fwdgt.c
index 688572f..4beebce 100644
--- a/src/fwdgt.c
+++ b/src/fwdgt.c
@@ -15,7 +15,7 @@ void watchdog_init(void) {
     rcu_osci_stab_wait(RCU_IRC40K);
 
     /* Configure FWDGT counter clock: 40KHz(IRC40K) / 64 = 0.625 KHz */
-    fwdgt_config(625, FWDGT_PSC_DIV256); // Set timeout to 1 seconds (625 / 0.625 KHz)
+    fwdgt_config(625, FWDGT_PSC_DIV64); // Set timeout to 1 seconds (625 / 0.625 KHz)
 
     /* Enable FWDGT */
     fwdgt_enable();
diff --git a/src/gd60914.c b/src/gd60914.c
index ccdeb21..b9662dc 100644
--- a/src/gd60914.c
+++ b/src/gd60914.c
@@ -11,23 +11,31 @@ void gd60914_get_object_tempture(void) {
     i2c_config();
     #endif
 
-    uint8_t data[2] = {0};
+    static uint8_t sensor_validation_data[2];
+    extern uint8_t g_temperature_uint8[2];
 
 #ifdef SOFTWARE_IIC
     soft_i2c_read_16bits(GD60914_ADDR, GD60914_OBJ_TEMP, data);
 #else
-    i2c_read_16bits(GD60914_ADDR, GD60914_OBJ_TEMP, data);
+    i2c_read_16bits(GD60914_ADDR, GD60914_OBJ_TEMP, sensor_validation_data);
 #endif
 
-    delay_ms(300);
+    if (sensor_validation_data[0] != 0xAA || sensor_validation_data[1] != 0x55) {
+#ifdef DEBUG_VERBOES
+        printf("sensor error\r\n");
+#endif
+        return;
+    }
+
+    delay_ms(350);
 
 #ifdef SOFTWARE_IIC
-    soft_i2c_read_16bits(GD60914_ADDR, GD60914_TEMP_REG, data);
+    soft_i2c_read_16bits(GD60914_ADDR, GD60914_TEMP_REG, g_temperature_uint8);
 #else
-    i2c_read_16bits(GD60914_ADDR, GD60914_TEMP_REG, data);
+    i2c_read_16bits(GD60914_ADDR, GD60914_TEMP_REG, g_temperature_uint8);
 #endif
 
-    printf("%d\r\n", data[1] << 8 | data[0]);
+    // printf("%d\r\n", g_temperature_uint8[1] << 8 | g_temperature_uint8[0]);
 }
 
 void gd60914_read_temp(void) {
diff --git a/src/main.c b/src/main.c
index 96ffd8b..547d512 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,6 +6,8 @@
 */
 #include "main.h"
 
+volatile uint8_t g_temperature_uint8[2] = {0};
+
 /*!
     \brief      main function
     \param[in]  none
@@ -34,8 +36,10 @@ int main(void)
 
     while(1){
         // printf("hello world!\r\n");
-        delay_ms(500);
+        // delay_ms(500);
         gd60914_get_object_tempture();
+        // delay_ms(100);
+        // printf("%d\r\n", g_temperature_uint8[1] << 8 | g_temperature_uint8[0]);
 
         watchdog_reload();
     }
diff --git a/src/rs485_protocol.c b/src/rs485_protocol.c
index ea8ce98..dd21581 100644
--- a/src/rs485_protocol.c
+++ b/src/rs485_protocol.c
@@ -4,6 +4,8 @@
 
 #include "rs485_protocol.h"
 
+extern uint8_t g_temperature_uint8[2];
+
 void process_command(uint8_t *cmd, size_t length) {
     char combined_str[3];
     validation_result_t validate = VALIDATION_SUCCESS;
@@ -20,9 +22,11 @@ void process_command(uint8_t *cmd, size_t length) {
         if (strcmp(combined_str, "M1") == 0) {
             printf("%c%c%c%c%c%c", 0xB5, 0xF1, 0x02, 0x6F, 0x6B, 0xCC);
             // eddy_current_value_report();
-        } else if (strcmp(combined_str, "M2") == 0) {
-            printf("%c%c%c%c%c%c%c", 0xB5, 0xF1, 0x02, 0x6F, 0x6B, 0x6B, 0xCC);
+        } else if (strcmp(combined_str, "M2") == 0)
+        {
+            // printf("%c%c%c%c%c%c", 0xB5, 0xF1, 0x02, g_temperature_uint8[1], g_temperature_uint8[0], 0xCC);
             // tempture_value_report();
+            gd60914_tempture();
         } else if (strcmp(combined_str, "M3") == 0)
         {
             printf("%c%c%c%c%c%c", 0xB5, 0xF1, 0x02, 0x6F, 0x6B, 0xCC);
@@ -90,3 +94,15 @@ validation_result_t validate_data_length(uint8_t *data) {
         return VALIDATION_LENGTH_ERROR;
     }
 }
+
+void gd60914_tempture(void) {
+    static uint8_t package_header[3] = {0xB5, 0xF0, 0x02};
+
+    uint8_t combined_data[5];
+    memcpy(combined_data, package_header, 3);
+    memcpy(combined_data + 3, g_temperature_uint8, 2);
+
+    printf("%c%c%c", package_header[0], package_header[1], package_header[2]);
+    printf("%c%c", g_temperature_uint8[1], g_temperature_uint8[0]);
+    printf("%c", calculate_crc(combined_data, 6));
+}
\ No newline at end of file