diff --git a/apps/chrg/applications/bsp/chrg_switch.c b/apps/chrg/applications/bsp/chrg_switch.c
index f5a2b91..4ff0633 100644
--- a/apps/chrg/applications/bsp/chrg_switch.c
+++ b/apps/chrg/applications/bsp/chrg_switch.c
@@ -75,38 +75,51 @@ int chrg_switch_south_lv1 (eIDX_CH ch)
 
 int chrg_switch_south_lv2_1 (eIDX_CH ch)
 {
-	if (ch >= TOTAL_CHS) {
-		return -1;
+	int ret = -1;
+
+	if (IDX_CH_0 == ch) {
+		ret = chrg_switch_ch(PIN_SW_SOUTH_LV2_A1, PIN_SW_SOUTH_LV2_B1, IDX_CH_2);
+	} else if (IDX_CH_1 == ch) {
+		ret = chrg_switch_ch(PIN_SW_SOUTH_LV2_A1, PIN_SW_SOUTH_LV2_B1, IDX_CH_0);
 	}
 
-	return chrg_switch_ch(PIN_SW_SOUTH_LV2_A1, PIN_SW_SOUTH_LV2_B1, ch);
+	return ret;
 }
 
 int chrg_switch_south_lv2_2 (eIDX_CH ch)
 {
-	if (ch >= TOTAL_CHS) {
+	int ret = -1;
+
+	if (IDX_CH_0 == ch) {
+		ret = chrg_switch_ch(PIN_SW_SOUTH_LV2_A2, PIN_SW_SOUTH_LV2_B2, IDX_CH_2);
+	} else if (IDX_CH_1 == ch) {
+		ret = chrg_switch_ch(PIN_SW_SOUTH_LV2_A2, PIN_SW_SOUTH_LV2_B2, IDX_CH_0);
+	} else {
 		return -1;
 	}
 
-	return chrg_switch_ch(PIN_SW_SOUTH_LV2_A2, PIN_SW_SOUTH_LV2_B2, ch);
+	return ret;
 }
 
 // 南向通道选择
 int chrg_switch_south (eIDX_SOUTH_CH ch)
 {
-	if (ch >= TOTAL_SOUTH_CHS) {
+	int ret = -1;
+	if (ch >= TOTAL_SOU_CHS) {
 		return -1;
 	}
 
-	if (ch < IDX_SOUTH_4) {
-		chrg_switch_south_lv1(IDX_CH_0);
-		chrg_switch_south_lv2_1((eIDX_CH)ch);
+	if ((IDX_SOU_CH1 == ch)||(IDX_SOU_CH2 == ch)) {
+		ret = chrg_switch_south_lv1(IDX_CH_1);
+		ret |= chrg_switch_south_lv2_2((eIDX_CH)ch);
+	} else if ((IDX_SOU_CH3 == ch)||(IDX_SOU_CH4 == ch)) {
+		ret = chrg_switch_south_lv1(IDX_CH_0);
+		ret |= chrg_switch_south_lv2_1((eIDX_CH)(ch-IDX_SOU_CH3));
 	} else {
-		chrg_switch_south_lv1(IDX_CH_1);
-		chrg_switch_south_lv2_2((eIDX_CH)(ch-IDX_SOUTH_4));
+		return -1;
 	}
 
-	return 0;
+	return ret;
 }
 
 static int chrg_switch_south_pins_init (void)
@@ -128,7 +141,7 @@ static int chrg_switch_init (void)
 	chrg_switch_south_pins_init();
 
 	chrg_switch_north(IDX_CH_0);
-	chrg_switch_south(IDX_SOUTH_0);
+	chrg_switch_south(IDX_SOU_CH1);
 
 	return 0;
 }
diff --git a/apps/chrg/applications/bsp/chrg_switch.h b/apps/chrg/applications/bsp/chrg_switch.h
index 6813a12..6c27342 100644
--- a/apps/chrg/applications/bsp/chrg_switch.h
+++ b/apps/chrg/applications/bsp/chrg_switch.h
@@ -14,25 +14,21 @@ typedef enum {
 					// U14		U23		U24		U25
 					// ----------------
 	IDX_CH_0 = 0,	// J3		U24		J12		J16
-	IDX_CH_1,		// J4		U25		J13		J17
+	IDX_CH_1,		// J4		U25		-J13	-J17
 	IDX_CH_2,		// J9		-		J14		J18
-	IDX_CH_3,		// J10		-		J15		J19
+	IDX_CH_3,		// J10		-		-J15	-J19
 
 	TOTAL_CHS
 } eIDX_CH;
 
 // 南向选择 组合
 typedef enum {
-	IDX_SOUTH_0 = 0,	// U24_J12
-	IDX_SOUTH_1,		// U24_J13
-	IDX_SOUTH_2,		// U24_J14
-	IDX_SOUTH_3,		// U24_J15
-	IDX_SOUTH_4,		// U25_J16
-	IDX_SOUTH_5,		// U25_J17
-	IDX_SOUTH_6,		// U25_J18
-	IDX_SOUTH_7,		// U25_J19
+	IDX_SOU_CH1 = 0,	// U25_J18
+	IDX_SOU_CH2,		// U25_J16
+	IDX_SOU_CH3,		// U24_J14
+	IDX_SOU_CH4,		// U24_J12
 
-	TOTAL_SOUTH_CHS
+	TOTAL_SOU_CHS
 } eIDX_SOUTH_CH;
 
 
diff --git a/apps/chrg/applications/thread/chrg_north.c b/apps/chrg/applications/thread/chrg_north.c
index fbb253f..7332a54 100644
--- a/apps/chrg/applications/thread/chrg_north.c
+++ b/apps/chrg/applications/thread/chrg_north.c
@@ -44,7 +44,7 @@ void chrg_north_sw_uart (eIDX_CH ch, eIDX_ID id)
 
 	if (ID_SOURCE == id) {
 		rt_pin_write(sw_uart[ch], PIN_HIGH);
-	} else {
+	} else if (ID_SINK == id) {
 		rt_pin_write(sw_uart[ch], PIN_LOW);
 	}
 
diff --git a/apps/chrg/applications/thread/chrg_roll.c b/apps/chrg/applications/thread/chrg_roll.c
index 4f1328d..80f4d61 100644
--- a/apps/chrg/applications/thread/chrg_roll.c
+++ b/apps/chrg/applications/thread/chrg_roll.c
@@ -15,7 +15,7 @@ struct chrg_roll_t chrgroll = {
 	.tid = RT_NULL,
 	.idx = 0,
 	.en_nor = {1, 1, 1, 1},
-	.en_sou = {1, 1, 1, 1, 0, 0, 0, 0},
+	.en_sou = {1, 1, 1, 1},
 };
 
 rt_uint8_t chrg_roll_get_idx (void)
@@ -46,7 +46,7 @@ static void chrg_roll_thread_entry (void *data)
 		return ;
 	}
 
-	rt_uint8_t idx = 0;
+	rt_uint8_t idx = 0, sou_idx = 0;
 	rt_err_t ret = RT_EOK;
 	rt_uint32_t recved = 0;
 	struct chrg_north_t *pNOR = &chrgnorth;
@@ -55,7 +55,7 @@ static void chrg_roll_thread_entry (void *data)
 
 	while (1) {
 		rt_mutex_take(pROLL->mutex, RT_WAITING_FOREVER);
-		pROLL->idx = idx%(TOTAL_CHS+TOTAL_SOUTH_CHS);
+		pROLL->idx = idx%(TOTAL_CHS+TOTAL_SOU_CHS);
 		rt_mutex_release(pROLL->mutex);
 
 		if (pROLL->idx < TOTAL_CHS) {
@@ -75,23 +75,25 @@ static void chrg_roll_thread_entry (void *data)
 					chrg_north_sw_uart(pNOR->idx, ID_SINK);
 					sink_get_vc(pSW->sink.loadv, pSW->sink.loadc);
 				}
+
+				rt_kprintf("Nor[%d].%d\r\n", pNOR->idx, pSW->id);
 			}
 		} else {
-			if (0 == pROLL->en_sou[pROLL->idx]) {
+			sou_idx = pROLL->idx - TOTAL_CHS;
+			if (0 == pROLL->en_sou[sou_idx]) {
 				idx++;
 				rt_thread_mdelay(1);
 				continue;
 			} else {
-				pSOU->idx = (eIDX_SOUTH_CH)(pROLL->idx - TOTAL_CHS);
+				pSOU->idx = (eIDX_SOUTH_CH)sou_idx;
 				chrg_switch_south(pSOU->idx);
 
 				pSW = &pSOU->sw[pSOU->idx];
-				if (ID_SOURCE == pSW->id) {
+				// todo pkg send
+				if (ID_ELOAD == pSW->id) {
 					source_get_vc(pSW->source.voltage, pSW->source.current);
-				} else if (ID_SINK == pSW->id) {
-					sink_get_vc(pSW->sink.loadv, pSW->sink.loadc);
 				}
-
+				rt_kprintf("Sou[%d].%d\r\n", pSOU->idx, pSW->id);
 			}
 		}
 
diff --git a/apps/chrg/applications/thread/chrg_roll.h b/apps/chrg/applications/thread/chrg_roll.h
index 9bba6fb..0f35fc2 100644
--- a/apps/chrg/applications/thread/chrg_roll.h
+++ b/apps/chrg/applications/thread/chrg_roll.h
@@ -20,7 +20,7 @@ struct chrg_roll_t {
 	rt_uint8_t			idx;	// 轮巡索引 0-3:nor 4-11:sou
 
 	rt_uint8_t			en_nor[TOTAL_CHS];			// 北向通路使能
-	rt_uint8_t			en_sou[TOTAL_SOUTH_CHS];	// 南向通路使能
+	rt_uint8_t			en_sou[TOTAL_SOU_CHS];		// 南向通路使能
 };
 
 extern struct chrg_roll_t chrgroll;
diff --git a/apps/chrg/applications/thread/chrg_south.c b/apps/chrg/applications/thread/chrg_south.c
index 60bf2c6..56f3435 100644
--- a/apps/chrg/applications/thread/chrg_south.c
+++ b/apps/chrg/applications/thread/chrg_south.c
@@ -15,6 +15,19 @@ struct chrg_south_t chrgsouth = {
 	.tid = RT_NULL,
 	.tty = RT_NULL,
 	.rx_len = 0,
+	.sw[IDX_SOU_CH1] = {
+		.id = ID_ELOAD,
+	},
+	.sw[IDX_SOU_CH2] = {
+		.id = ID_ELOAD,
+	},
+	.sw[IDX_SOU_CH3] = {
+		.id = ID_ELOAD,
+	},
+	.sw[IDX_SOU_CH4] = {
+		.id = ID_ELOAD,
+	},
+
 };
 
 int chrg_south_send (rt_uint8_t *data, rt_size_t length)
diff --git a/apps/chrg/applications/thread/chrg_south.h b/apps/chrg/applications/thread/chrg_south.h
index bd25763..aba0a00 100644
--- a/apps/chrg/applications/thread/chrg_south.h
+++ b/apps/chrg/applications/thread/chrg_south.h
@@ -20,7 +20,7 @@ struct chrg_south_t {
 	rt_uint8_t			rx_buf[SIZE_BUF_TTY];
 
 	eIDX_SOUTH_CH		idx;	// 当前通路
-	struct chrg_switch_t sw[TOTAL_SOUTH_CHS];
+	struct chrg_switch_t sw[TOTAL_SOU_CHS];
 };
 
 extern struct chrg_south_t chrgsouth;
diff --git a/apps/chrg/applications/utils/chrg_def.h b/apps/chrg/applications/utils/chrg_def.h
index 43abf33..7c30ded 100644
--- a/apps/chrg/applications/utils/chrg_def.h
+++ b/apps/chrg/applications/utils/chrg_def.h
@@ -7,6 +7,7 @@
 typedef enum {
 	ID_SINK			= 0x01,		// SINK 的 ID 为 1, 波特率 200K
 	ID_SOURCE		= 0x02,		// SOURCE 的 ID 为 2, 波特率 200K
+	ID_ELOAD		= 0x03,		// LOAD ID 3， 波特率 115200
 } eIDX_ID;
 
 // 电压电流极值
diff --git a/docs/HC-DFCD-300-A可编程源载板快速使用说明V1.0-202509.docx b/docs/HC-DFCD-300-A可编程源载板快速使用说明V1.0-202509.docx
deleted file mode 100644
index 86d8a30..0000000
Binary files a/docs/HC-DFCD-300-A可编程源载板快速使用说明V1.0-202509.docx and /dev/null differ