diff --git a/pel.c b/pel.c
index 5126ad2..53f6ddd 100644
--- a/pel.c
+++ b/pel.c
@@ -61,7 +61,7 @@ static float _load_set_by_ohms(float ohms)
     return ohms;
 }
 
-static void _sample(void)
+static void _sample_measure_out_is_low(void)
 {
     nrf_gpio_pin_set(ANODE_PIN);
     nrf_gpio_pin_clear(CATHODE_PIN);
@@ -83,6 +83,28 @@ static void _sample(void)
     nrf_gpio_pin_toggle(SAMPLE_V_PIN);
 }
 
+static void _sample_measure_out_is_high(void)
+{
+    nrf_gpio_pin_clear(ANODE_PIN);
+    nrf_gpio_pin_set(CATHODE_PIN);
+    nrf_gpio_pin_clear(SAMPLE_R_PIN);
+    nrf_gpio_pin_clear(SAMPLE_V_PIN);
+    nrf_delay_us(10);
+
+    nrf_gpio_pin_toggle(ANODE_PIN);
+    nrf_gpio_pin_toggle(CATHODE_PIN);
+    nrf_delay_us(5);
+
+    nrf_gpio_pin_toggle(SAMPLE_R_PIN);
+    nrf_gpio_pin_toggle(SAMPLE_V_PIN);
+    nrf_delay_us(5);
+
+    nrf_gpio_pin_toggle(CATHODE_PIN);
+    nrf_gpio_pin_toggle(ANODE_PIN);
+    nrf_gpio_pin_toggle(SAMPLE_R_PIN);
+    nrf_gpio_pin_toggle(SAMPLE_V_PIN);
+}
+
 void pel_relays_set(uint32_t measure_out)
 {
     if (measure_out)
@@ -99,7 +121,7 @@ void pel_relays_set(uint32_t measure_out)
     vTaskDelay(pdMS_TO_TICKS(30));
 }
 
-pel_output_t pel_smaple_and_convt_all(uint32_t load_mask)
+pel_output_t pel_smaple_and_convt_all(uint32_t measure_out, uint32_t load_mask)
 {
     uint32_t ch_list[] = {
         OUTPUT_R1_CHANNEL,
@@ -112,7 +134,14 @@ pel_output_t pel_smaple_and_convt_all(uint32_t load_mask)
     /* config E-load */
     _load_set(load_mask);
     /* send a pulse to sample and then read ADC channels */
-    adc_read_mutiple_channels_ex(ch_list, results, COUNTOF(ch_list), _sample);
+    if (measure_out)
+    {
+        adc_read_mutiple_channels_ex(ch_list, results, COUNTOF(ch_list), _sample_measure_out_is_high);
+    }
+    else
+    {
+        adc_read_mutiple_channels_ex(ch_list, results, COUNTOF(ch_list), _sample_measure_out_is_low);
+    }
     /* copy results */
     output_data.output_r1 = results[0];
     output_data.output_r2 = results[1];
@@ -227,66 +256,80 @@ static void dev_mode(uint8_t *ins, uint16_t size)
         return;
     }
 
-    struct
-    {
-        uint8_t status;
-        uint16_t mask;
-    } __PACKED *p_param = (void *)p_ins->param;
-
     switch (p_ins->opcode)
     {
-        case 0x00: {
+        case 0x60: {
+            struct
+            {
+                uint8_t status;
+                uint16_t mask;
+            } __PACKED *p_param = (void *)p_ins->param;
+
             pel_relays_set(p_param->status);
-            dev_mode_pel_output = pel_smaple_and_convt_all(p_param->mask);
+            dev_mode_pel_output = pel_smaple_and_convt_all(p_param->status, __REVSH(p_param->mask));
             break;
         }
 
-        case 0x01: {
-            extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
-            le_data_upadate((void *)&dev_mode_pel_output.output_r1, sizeof(dev_mode_pel_output.output_r1));
-            break;
-        }
-        case 0x02: {
-            extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
-            le_data_upadate((void *)&dev_mode_pel_output.output_r2, sizeof(dev_mode_pel_output.output_r2));
-            break;
-        }
-        case 0x03: {
-            extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
-            le_data_upadate((void *)&dev_mode_pel_output.output_vo, sizeof(dev_mode_pel_output.output_vo));
-            break;
-        }
-        case 0x04: {
-            extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
-            le_data_upadate((void *)&dev_mode_pel_output.output_vc, sizeof(dev_mode_pel_output.output_vc));
-            break;
-        }
-        case 0x05: {
-            extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
-            le_data_upadate((void *)&dev_mode_pel_output.output_ve, sizeof(dev_mode_pel_output.output_ve));
-            break;
-        }
-        case 0x06: {
-            if (test_gpio_task_Handle == NULL)
+        case 0x61: {
+            struct
             {
-                NRF_LOG_INFO("[test] start test_gpio_task task");
-                xTaskCreate(test_gpio_task, "test_gpio_task", 1024, NULL, 4, &test_gpio_task_Handle);
+                uint8_t channel;
+            } __PACKED *p_param = (void *)p_ins->param;
+
+            if (p_param->channel == 0x01) {
+                extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
+                le_data_upadate((void *)&dev_mode_pel_output.output_r1, sizeof(dev_mode_pel_output.output_r1));
+            }
+            else if (p_param->channel == 0x02) {
+                extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
+                le_data_upadate((void *)&dev_mode_pel_output.output_r2, sizeof(dev_mode_pel_output.output_r2));
+            }
+            else if (p_param->channel == 0x03) {
+                extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
+                le_data_upadate((void *)&dev_mode_pel_output.output_vo, sizeof(dev_mode_pel_output.output_vo));
+            }
+            else if (p_param->channel == 0x04) {
+                extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
+                le_data_upadate((void *)&dev_mode_pel_output.output_vc, sizeof(dev_mode_pel_output.output_vc));
+            }
+            else if (p_param->channel == 0x05) {
+                extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
+                le_data_upadate((void *)&dev_mode_pel_output.output_ve, sizeof(dev_mode_pel_output.output_ve));
             }
             break;
         }
-        case 0x07: {
-            if (test_gpio_task_Handle != NULL)
-            {
-                NRF_LOG_INFO("[test] delete test_gpio_task task");
-                vTaskDelete(test_gpio_task_Handle);
-                test_gpio_task_Handle = NULL;
-            }
-            break;
-        }
-        case 0x08: {
+
+        case 0xF0: {
             pel10_io_init();
             break;
         }
+
+        case 0xF1: {
+            struct
+            {
+                uint8_t status;
+            } __PACKED *p_param = (void *)p_ins->param;
+
+            if (p_param->status == 0x01)
+            {
+                if (test_gpio_task_Handle == NULL)
+                {
+                    NRF_LOG_INFO("[test] start test_gpio_task task");
+                    xTaskCreate(test_gpio_task, "test_gpio_task", 1024, NULL, 4, &test_gpio_task_Handle);
+                }
+            }
+            else if (p_param->status == 0x00)
+            {
+                if (test_gpio_task_Handle != NULL)
+                {
+                    NRF_LOG_INFO("[test] delete test_gpio_task task");
+                    vTaskDelete(test_gpio_task_Handle);
+                    test_gpio_task_Handle = NULL;
+                }
+            }
+            break;
+        }
+
         default: {
             break;
         }
diff --git a/pel.h b/pel.h
index 6750464..0dc4b2e 100644
--- a/pel.h
+++ b/pel.h
@@ -29,7 +29,7 @@ typedef struct
 } pel_output_t;
 
 void pel_relays_set(uint32_t measure_out);
-pel_output_t pel_smaple_and_convt_all(uint32_t load_mask);
+pel_output_t pel_smaple_and_convt_all(uint32_t measure_out, uint32_t load_mask);
 const elite_instance_t *pel_init(void);
 
 #endif // !__PEL_H__