diff --git a/app/app.uvoptx b/app/app.uvoptx
index 39128d0..ada9551 100644
--- a/app/app.uvoptx
+++ b/app/app.uvoptx
@@ -1000,7 +1000,7 @@
 
   <Group>
     <GroupName>nRF_Libraries</GroupName>
-    <tvExp>1</tvExp>
+    <tvExp>0</tvExp>
     <tvExpOptDlg>0</tvExpOptDlg>
     <cbSel>0</cbSel>
     <RteFlg>0</RteFlg>
diff --git a/app/config/sdk_config.h b/app/config/sdk_config.h
index 9c3df25..c7a5c30 100644
--- a/app/config/sdk_config.h
+++ b/app/config/sdk_config.h
@@ -4597,7 +4597,7 @@
 #endif
 // <o> NRFX_UART0_ENABLED - Enable UART0 instance 
 #ifndef NRFX_UART0_ENABLED
-#define NRFX_UART0_ENABLED 0
+#define NRFX_UART0_ENABLED 1
 #endif
 
 // <o> NRFX_UART_DEFAULT_CONFIG_HWFC  - Hardware Flow Control
diff --git a/app/main.c b/app/main.c
index 843421a..1cebf4f 100644
--- a/app/main.c
+++ b/app/main.c
@@ -3,9 +3,22 @@
 #include "znordic.h"
 //
 
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+//
+#include "app_uart.h"
 #include "basic/ssd1306/driver_ssd1306_basic.h"
 #include "one_conduction/one_conduction_board.h"
 #include "three_lead\three_lead_board.h"
+#if defined(UART_PRESENT)
+#include "nrf_uart.h"
+#endif
+#if defined(UARTE_PRESENT)
+#include "nrf_uarte.h"
+#endif
+
 #if 0
 static void test_tx_timer_cb(void* p_context) {
   ZLOGI("test_tx_timer_cb");
@@ -72,7 +85,7 @@ void main() {
 /*******************************************************************************
  *                                  屏幕测试+LED测试                            *
  *******************************************************************************/
-#if 1
+#if 0
 static void test_tx_timer_cb(void* p_context) {
   static uint32_t data;
   data++;
@@ -112,31 +125,77 @@ void main() {
  *                                  ECG                                        *
  *******************************************************************************/
 
-#if 0
+#if 1
+#define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */
+#define UART_RX_BUF_SIZE 256 /**< UART RX buffer size. */
+uint32_t                     err_code;
+app_uart_comm_params_t const comm_params =  //
+    {
+        .rx_pin_no    = UART_PIN_DISCONNECTED,
+        .tx_pin_no    = 41,
+        .rts_pin_no   = UART_PIN_DISCONNECTED,
+        .cts_pin_no   = UART_PIN_DISCONNECTED,
+        .flow_control = APP_UART_FLOW_CONTROL_DISABLED,
+        .use_parity   = false,
+        .baud_rate    = NRF_UARTE_BAUDRATE_921600,
+};
+
+void uart_error_handle(app_uart_evt_t* p_event) {}
+
+void uartinit() {
+  APP_UART_FIFO_INIT(&comm_params, UART_RX_BUF_SIZE, UART_TX_BUF_SIZE, uart_error_handle, APP_IRQ_PRIORITY_LOWEST, err_code);
+  APP_ERROR_CHECK(err_code);
+}
+
+void zchip_log(const char* fmt, ...) {
+  static char tx[256] = {0};
+  va_list     args;
+  va_start(args, fmt);
+
+  vsprintf(tx, fmt, args);
+  for (size_t i = 0; i < strlen(tx); i++) {
+    app_uart_put(tx[i]);
+  }
+
+  va_end(args);
+}
+
 static void test_tx_timer_cb(void* p_context) {
   static uint32_t data;
   data++;
   // SingleLeadECG_ecg_nlod_get_connected_state();
   // SingleLeadECG_ecg_plod_get_connected_state();
   // SingleLeadECG_ecg_plod_get_ecg_val();
-  ZLOGI("%d nlod %d plod %d  ecg:%d", data, SingleLeadECG_ecg_nlod_get_connected_state(), SingleLeadECG_ecg_plod_get_connected_state(), SingleLeadECG_ecg_plod_get_ecg_val());
+  // ZLOGI("%d nlod %d plod %d  ecg:%d", data, SingleLeadECG_ecg_nlod_get_connected_state(), SingleLeadECG_ecg_plod_get_connected_state(), SingleLeadECG_ecg_plod_get_ecg_val());
+  // ZLOGI("%d,%d,%d", SingleLeadECG_ecg_nlod_get_connected_state(), SingleLeadECG_ecg_plod_get_connected_state(), SingleLeadECG_ecg_plod_get_ecg_val());
+
+  zchip_log("%d,%d,%d\n", SingleLeadECG_ecg_nlod_get_connected_state(), SingleLeadECG_ecg_plod_get_connected_state(), SingleLeadECG_ecg_plod_get_ecg_val());
+  // app_uart_put('c');
+  // app_uart_put('c');
+  // app_uart_put('c');
+  // app_uart_put('c');
+  // app_uart_put('c');
+  // NRF_LOG_INFO("......");
 }
 
 extern uint32_t g_nrf_log_tx_pin;
 APP_TIMER_DEF(m_test_tx_timer);
 
 void main() {
+  // g_nrf_log_tx_pin = 41;
   APP_SCHED_INIT(APP_TIMER_SCHED_EVENT_DATA_SIZE, 20);
   znordic_init();
   SingleLeadECG_adc_module_init();
 
+  uartinit();
+
   NRF_LOG_INFO("compile time :%s %d", __TIME__, APP_TIMER_TICKS(100));
   NRF_LOG_INTERNAL_FLUSH();
 
   SingleLeadECG_ecg_init();
 
   ZERROR_CHECK(app_timer_create(&m_test_tx_timer, APP_TIMER_MODE_REPEATED, test_tx_timer_cb));
-  ZERROR_CHECK(app_timer_start(m_test_tx_timer, APP_TIMER_TICKS(1000), NULL));
+  ZERROR_CHECK(app_timer_start(m_test_tx_timer, APP_TIMER_TICKS(5), NULL));
   znordic_loop();
 }
 #endif
diff --git a/app/src/one_conduction/one_conduction_board.c b/app/src/one_conduction/one_conduction_board.c
index 9736504..0692535 100644
--- a/app/src/one_conduction/one_conduction_board.c
+++ b/app/src/one_conduction/one_conduction_board.c
@@ -28,10 +28,10 @@
 
 #define ECG_NLOD_PIN    3
 #define ECG_PLOD_PIN    28
-#define ECG_ADC_PIN     NRF_SAADC_INPUT_AIN2
+#define ECG_ADC_PIN     NRF_SAADC_INPUT_AIN0
 #define ECG_ADC_CHANNEL 0  // 不重复即可
 
-#define BATTERY_ADC_PIN     NRF_SAADC_INPUT_AIN5
+#define BATTERY_ADC_PIN     NRF_SAADC_INPUT_AIN3
 #define BATTERY_ADC_CHANNEL 1  // 不重复即可
 
 #define EEPROM_I2C_SCL_M    15  // I2C SCL引脚
@@ -177,8 +177,8 @@ void SingleLeadECG_ecg_init() {
   channel_config.acq_time                   = NRF_SAADC_ACQTIME_40US;
   ZERROR_CHECK(nrfx_saadc_channel_init(ECG_ADC_CHANNEL, &channel_config));
 
-  nrf_gpio_cfg_sense_input(ECG_NLOD_PIN, NRF_GPIO_PIN_NOPULL, NRF_GPIO_PIN_SENSE_LOW);
-  nrf_gpio_cfg_sense_input(ECG_PLOD_PIN, NRF_GPIO_PIN_NOPULL, NRF_GPIO_PIN_SENSE_LOW);
+  nrf_gpio_cfg_sense_input(ECG_NLOD_PIN, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
+  nrf_gpio_cfg_sense_input(ECG_PLOD_PIN, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
 }
 
 uint32_t SingleLeadECG_ecg_nlod_get_connected_state() { return nrf_gpio_pin_read(ECG_NLOD_PIN); }