diff --git a/inc/LDC1612.h b/inc/LDC1612.h
index 979f272..02a83b1 100644
--- a/inc/LDC1612.h
+++ b/inc/LDC1612.h
@@ -30,11 +30,27 @@
 #define SENSOR_RESET_REG                        0X1C
 #define SET_DRIVER_CURRENT_REG                  0X1E
 
+#define RCOUNT_CH0_REG                          0x08
+#define SETTLECOUNT_CH0_REG                     0x10
+#define CLOCK_DIVIDERS_CH0_REG                  0x14
+#define ERROR_CONFIG_REG                        0X19
+#define MUX_CONFIG_REG                          0x1B
+#define DRIVE_CURRENT_CH0_REG                   0x1E
+#define SENSOR_CONFIG_REG                       0X1A
+
 #define READ_MANUFACTURER_ID                    0X7E
 #define READ_DEVICE_ID                          0X7F
 
 /******************************************************************************/
 
+#define CHANNEL_0  0
+#define CHANNEL_1  1
+
+/******************************************************************************/
+
+#define CONVERSION_TIME_CH0                     0X0546  //0536
+#define CONVERSION_OFFSET_CH0                   0X0000
+#define LC_STABILIZE_TIME_CH0                   0X001E //30
 
 typedef enum {
     I2C_START = 0,
@@ -49,7 +65,7 @@ typedef enum {
 #define I2C_FAIL        0
 #define I2C_END         1
 
-#define I2C_SPEED 100000
+#define I2C_SPEED 20000
 #define RCU_GPIO_I2C RCU_GPIOF
 #define RCU_I2C RCU_I2C0
 #define I2C_SCL_PORT GPIOF
diff --git a/src/LDC1612.c b/src/LDC1612.c
index a41c217..227d723 100644
--- a/src/LDC1612.c
+++ b/src/LDC1612.c
@@ -157,6 +157,39 @@ void I2C_scan(void) {
     }
 }
 
+/** @brief set conversion interval time.
+    @param channel LDC1612 has total two channels.
+    @param result The value to be set.
+ * */
+void ldc1612_set_conversion_time(uint8_t channel, uint16_t result) {
+    uint8_t data[2] = {0};
+    data[0] = (result >> 8) & 0xFF;
+    data[1] = result & 0xFF;
+    ldc1612_iic_write_16bits(SET_CONVERSION_TIME_REG_START + channel, data);
+}
+
+/** @brief set conversion offset.
+    @param channel LDC1612 has total two channels.
+    @param result The value to be set.
+ * */
+void ldc1612_set_conversion_offset(uint8_t channel, uint16_t result) {
+    uint8_t data[2] = {0};
+    data[0] = (result >> 8) & 0xFF;
+    data[1] = result & 0xFF;
+    ldc1612_iic_write_16bits(SET_CONVERSION_OFFSET_REG_START + channel, data);
+}
+
+/** @brief Before conversion,wait LC sensor stabilize for a short time.
+    @param channel LDC1612 has total two channels.
+    @param result The value to be set.
+ * */
+void ldc1612_set_LC_stabilize_time(uint8_t channel, uint16_t result) {
+    uint8_t data[2] = {0};
+    data[0] = (result >> 8) & 0xFF;
+    data[1] = result & 0xFF;
+    ldc1612_iic_write_16bits(SET_LC_STABILIZE_REG_START + channel, data);
+}
+
 int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data) {
     uint16_t timeout = 0;
 
@@ -262,9 +295,8 @@ int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data) {
 
 void ldc1612_iic_get_sensor_infomation(void) {
     uint16_t data = 0;
-    LDC1612_IIC_read_16bits(READ_DEVICE_ID, &data);
+    LDC1612_IIC_read_16bits(READ_MANUFACTURER_ID, &data);
     printf("\tManufacturer: 0x%x\r\n", data);
-    // delay_ms(5000);
     LDC1612_IIC_read_16bits(READ_DEVICE_ID, &data);
     printf("\tDevice: 0x%x\r\n", data);
 }
@@ -306,7 +338,7 @@ uint8_t ldc1612_iic_read_16bits(uint8_t reg_addr, uint8_t *data) {
                         /* whether to send ACK or not for the next byte */
                         i2c_ackpos_config(I2C0, I2C_ACKPOS_NEXT);
                     } else {
-                        i2c_bus_reset();
+                        // i2c_bus_reset();
                         timeout = 0;
                         state = I2C_START;
                         printf("i2c bus is busy in READ!\n");
diff --git a/src/main.c b/src/main.c
index e19e083..9a2f035 100644
--- a/src/main.c
+++ b/src/main.c
@@ -60,20 +60,23 @@ int main(void) {
     printf("\r\n");
 
     delay_ms(500);
+    ldc1612_iic_get_sensor_infomation();
 
-    uint16_t device_id = 0;
-    device_id = ldc1612_get_deveice_id();
-    printf("device id = 0x%x\r\n", device_id);
-
-    delay_ms(100);
-
-    device_id = 0;
-    device_id = ldc1612_get_manufacturer_id();
-    printf("device id = 0x%x\r\n", device_id);
-
-    uint8_t data[2] = {0x05, 0x36};
-    ldc1612_iic_write_16bits(SET_CONVERSION_TIME_REG_START, data);
+    // uint16_t device_id = 0;
+    // device_id = ldc1612_get_deveice_id();
+    // printf("device id = 0x%x\r\n", device_id);
+    //
+    // delay_ms(100);
+    //
+    // device_id = 0;
+    // device_id = ldc1612_get_manufacturer_id();
+    // printf("device id = 0x%x\r\n", device_id);
 
+    uint16_t result = {0x0546};
+    uint8_t data[2] = {0};
+    data[0] = (result >> 8) & 0xFF;
+    data[1] = result & 0xFF;
+    printf("data[0] = 0x%x, data[1] = 0x%x\r\n", data[0], data[1]);
 
     while (1) {
         // delay_ms(1000);