diff --git a/apps/chrg/applications/bsp/chrg_intr.c b/apps/chrg/applications/bsp/chrg_intr.c
index 1dea843..d28456a 100644
--- a/apps/chrg/applications/bsp/chrg_intr.c
+++ b/apps/chrg/applications/bsp/chrg_intr.c
@@ -44,15 +44,6 @@ struct chrg_intr_t chrgintr[TOTAL_INTR] = {
 		.pulse = PIN_IRQ_MODE_FALLING,
 		.value = PIN_LOW,
 		.delay = 0,
-	},
-	[IDX_INTR_KEY] = {
-		.name = NAME_INTR_KEY,
-		.index = IDX_INTR_KEY,
-		.pin = PIN_INTR_KEY,
-		.mode = PIN_MODE_INPUT_PULLUP,
-		.pulse = PIN_IRQ_MODE_RISING,
-		.value = PIN_LOW,
-		.delay = 0,
 	}
 };
 
diff --git a/apps/chrg/applications/bsp/chrg_intr.h b/apps/chrg/applications/bsp/chrg_intr.h
index f1684db..43a87f7 100644
--- a/apps/chrg/applications/bsp/chrg_intr.h
+++ b/apps/chrg/applications/bsp/chrg_intr.h
@@ -10,20 +10,17 @@
 #define NAME_INTR_I2C2		"i2c2irq"
 #define NAME_INTR_I2C3		"i2c3irq"
 #define NAME_INTR_I2C4		"i2c4irq"
-#define NAME_INTR_KEY		"keyirq"
 
-#define PIN_INTR_I2C1		GET_PIN(C, 8) //GET_PIN(C, 1)
-#define PIN_INTR_I2C2		GET_PIN(C, 9) //GET_PIN(A, 1)
+#define PIN_INTR_I2C1		GET_PIN(C, 1)
+#define PIN_INTR_I2C2		GET_PIN(A, 1)
 #define PIN_INTR_I2C3		GET_PIN(A, 7)
 #define PIN_INTR_I2C4		GET_PIN(B, 13)
-#define PIN_INTR_KEY		GET_PIN(A, 0) //GET_PIN(B, 6)
 
 typedef enum {
 	IDX_INTR_I2C1		= 0,	// 0
 	IDX_INTR_I2C2,				// 1
 	IDX_INTR_I2C3,				// 2
 	IDX_INTR_I2C4,				// 3
-	IDX_INTR_KEY,				// 4
 
 	TOTAL_INTR
 } eIDX_INTR;
diff --git a/apps/chrg/applications/bsp/chrg_switch.c b/apps/chrg/applications/bsp/chrg_switch.c
index 2c5dae7..f5a2b91 100644
--- a/apps/chrg/applications/bsp/chrg_switch.c
+++ b/apps/chrg/applications/bsp/chrg_switch.c
@@ -127,6 +127,9 @@ static int chrg_switch_init (void)
 	chrg_switch_north_pins_init();
 	chrg_switch_south_pins_init();
 
+	chrg_switch_north(IDX_CH_0);
+	chrg_switch_south(IDX_SOUTH_0);
+
 	return 0;
 }
 
diff --git a/apps/chrg/applications/bsp/chrg_tty.h b/apps/chrg/applications/bsp/chrg_tty.h
index 2a76349..193e502 100644
--- a/apps/chrg/applications/bsp/chrg_tty.h
+++ b/apps/chrg/applications/bsp/chrg_tty.h
@@ -29,7 +29,7 @@ typedef enum {
 #define TTY_SW_DLY_US			0    // 发送引脚控制切换延时
 #endif
 
-#define SIZE_BUF_TTY			128
+#define SIZE_BUF_TTY			256
 
 #define TTY_TX_COMP_TMO_MAX		(3 * RT_TICK_PER_SECOND)	// 最大DMA传输完成超时
 #define TTY_BYTE_TMO_MIN		2     // 最小字节超时
diff --git a/apps/chrg/applications/thread/chrg_north.c b/apps/chrg/applications/thread/chrg_north.c
index 1676ee9..2343a68 100644
--- a/apps/chrg/applications/thread/chrg_north.c
+++ b/apps/chrg/applications/thread/chrg_north.c
@@ -1,4 +1,4 @@
-
+#include <string.h>
 #include <rtthread.h>
 
 #include "chrg_north.h"
@@ -38,54 +38,30 @@ static void chrg_north_thread_entry (void *data)
 		return ;
 	}
 
-	//rt_uint8_t crc8 = 0;
-	//rt_size_t len_mq = 0, len_get = 0, len_msg = 0;
-	struct chrg_tty_t *pTTY = pNOR->tty;
-	//struct mq_msg_t msg;
 	int len = 0;
+	struct chrg_tty_t *pTTY = pNOR->tty;
 
-    chrg_tty_set_recv_tmo(pTTY, 200);
+    chrg_tty_set_recv_tmo(pTTY, 100);
     if (chrg_tty_connect(pTTY) != RT_EOK) {
         chrg_tty_destory(pTTY);
         return;
     }
 
 	while (1) {
+		memset(pNOR->rx_buf, 0, sizeof(pNOR->rx_buf));
         len = chrg_tty_recv(pTTY, pNOR->rx_buf, sizeof(pNOR->rx_buf));
-        if (len > 0) {
-            chrg_tty_send(pTTY, pNOR->rx_buf, len);
-        }
-/*
-		rt_memset(&msg, 0, sizeof(struct mq_msg_t));
-		len_mq = rt_mq_recv(pTTY->mq, &msg, sizeof(struct mq_msg_t), RT_WAITING_FOREVER);
-		if (len_mq <= 0) {
+		if (len <= 0) {
+			rt_thread_mdelay(1);
 			continue;
 		}
 
-		len_get = rt_device_read(msg.dev, 0, &pNOR->rx_buf[0], 1);
-		if (1 != len_get) {
-			continue;
-		}
 
-		pNOR->rx_len = 1;
+		rt_kprintf("%s\r\n", (char *)pNOR->rx_buf);
+		chrg_tty_send(pTTY, pNOR->rx_buf, len);
 
-		len_msg = rt_device_read(msg.dev, 0, &pNOR->rx_buf[1], len_get-1);
-		if (len_msg <= 0) {
-			continue;
-		}
 
-		pNOR->rx_len += len_msg;
 
-		if (len_msg == len_get-1) {
-			crc8 = calc_crc8(pNOR->rx_buf, len_msg);
 
-			if (crc8 == pNOR->rx_buf[len_msg]) {
-				
-
-				pNOR->rx_len = 0;
-			}
-		}
-*/
 	}
 
 }
diff --git a/apps/chrg/applications/thread/chrg_south.c b/apps/chrg/applications/thread/chrg_south.c
index a09e7c9..7595272 100644
--- a/apps/chrg/applications/thread/chrg_south.c
+++ b/apps/chrg/applications/thread/chrg_south.c
@@ -37,13 +37,10 @@ static void chrg_south_thread_entry (void *data)
 		return ;
 	}
 
-	//rt_uint8_t crc8 = 0;
-	//rt_size_t len_mq = 0, len_get = 0, len_msg = 0;
-	struct chrg_tty_t *pTTY = pSOU->tty;
-	//struct mq_msg_t msg;
 	int len = 0;
+	struct chrg_tty_t *pTTY = pSOU->tty;
 
-    chrg_tty_set_recv_tmo(pTTY, 200);
+    chrg_tty_set_recv_tmo(pTTY, 100);
     if (chrg_tty_connect(pTTY) != RT_EOK) {
         chrg_tty_destory(pTTY);
         return;
@@ -51,40 +48,15 @@ static void chrg_south_thread_entry (void *data)
 
 	while (1) {
         len = chrg_tty_recv(pTTY, pSOU->rx_buf, sizeof(pSOU->rx_buf));
-        if (len > 0) {
-            chrg_tty_send(pTTY, pSOU->rx_buf, len);
-        }
-/*
-		rt_memset(&msg, 0, sizeof(struct mq_msg_t));
-		len_mq = rt_mq_recv(pTTY->mq, &msg, sizeof(struct mq_msg_t), RT_WAITING_FOREVER);
-		if (len_mq <= 0) {
+		if (len <= 0) {
+			rt_thread_mdelay(1);
 			continue;
 		}
 
-		len_get = rt_device_read(msg.dev, 0, &pSOU->rx_buf[0], 1);
-		if (1 != len_get) {
-			continue;
-		}
+		rt_kprintf("%s\r\n", (char *)pSOU->rx_buf);
+		chrg_tty_send(pTTY, pSOU->rx_buf, len);
 
-		pSOU->rx_len = 1;
 
-		len_msg = rt_device_read(msg.dev, 0, &pSOU->rx_buf[1], len_get-1);
-		if (len_msg <= 0) {
-			continue;
-		}
-
-		pSOU->rx_len += len_msg;
-
-		if (len_msg == len_get-1) {
-			crc8 = calc_crc8(pSOU->rx_buf, len_msg);
-
-			if (crc8 == pSOU->rx_buf[len_msg]) {
-				
-
-				pSOU->rx_len = 0;
-			}
-		}
-*/
 	}
 
 }