diff --git a/df_datalink_sp/src/systembus/systembus.c b/df_datalink_sp/src/systembus/systembus.c
index ef17eb0..8a03864 100644
--- a/df_datalink_sp/src/systembus/systembus.c
+++ b/df_datalink_sp/src/systembus/systembus.c
@@ -229,6 +229,7 @@ int32_t SystemBus_Init(SYSBUS **instPtr, SYSBUS_CONFIG *config)
 	(*instPtr)->txQueue = NULL;
 	(*instPtr)->uartInst = NULL;
 	memcpy(&((*instPtr)->config), config, sizeof(SYSBUS_CONFIG));
+	memset(&((*instPtr)->sysLog), 0x00, sizeof(SYSLOG));
 	uartConfig.baseAddr = config->baseAddr;
 	Status = SysbusUart_Init(&((*instPtr)->uartInst), &uartConfig);
 	if (Status != SUCCESS)
@@ -289,7 +290,7 @@ int32_t SystemBus_HandleCmd(SYSBUS *instPtr)
 	{
 	case CMD_SELF_TEST:
 	{
-		const HWSTATE *hwStatsPtr;
+		HWSTATE *hwStatsPtr = &(instPtr->sysLog.hwState);
 		sysbusRsp = malloc(sizeof(SYSBUS_UART_FRAME));
 		if (sysbusRsp == NULL) {
 			DBG_ERROR("Failed to allocate memory for SELF TEST Response!\n");
@@ -300,7 +301,7 @@ int32_t SystemBus_HandleCmd(SYSBUS *instPtr)
 		memset(sysbusRsp->data, 0x00, ST_RSP_LEN);
 		sysbusRsp->data[WD_CMD] = CMD_SELF_TEST;
 		sysbusRsp->data[WD_PRD] = MY_PRD_ID;
-		hwStatsPtr = Phy_RefreshHwSate(linkInstPtr->config.phyInstPtr);
+		SysMonitor_GetHardwareStatus(hwStatsPtr);
 		if (linkInstPtr->isEnable == false) 
 		{
 			sysbusRsp->data[WD_ST_RET] = (hwStatsPtr->isSpOk) ? ST_RET_OK : ST_RET_ERROR;
@@ -309,19 +310,8 @@ int32_t SystemBus_HandleCmd(SYSBUS *instPtr)
 		{
 			sysbusRsp->data[WD_ST_RET] = (hwStatsPtr->isSpOk && hwStatsPtr->isAntOk) ? ST_RET_OK : ST_RET_ERROR;
 		}
-		sysbusRsp->data[WD_SP_PS_VOLT] = hwStatsPtr->spPsVolt;
-		sysbusRsp->data[WD_SP_PSAUX_VOLT] = hwStatsPtr->spPsAuxVolt;
-		sysbusRsp->data[WD_SP_DDR_VOLT] = hwStatsPtr->spDdrVolt;
-		sysbusRsp->data[WD_SP_PL_VOLT] = hwStatsPtr->spPlVolt;
-		sysbusRsp->data[WD_SP_PLAUX_VOLT] = hwStatsPtr->spPlAuxVolt;
-		sysbusRsp->data[WD_SP_BRAM_VOLT] = hwStatsPtr->spBramVolt;
-		sysbusRsp->data[WD_SP_TEMP] = hwStatsPtr->spTemp;
-		sysbusRsp->data[WD_ANT_VOLT] = hwStatsPtr->antVolt;
-		sysbusRsp->data[WD_ANT_RF_TEMP] = hwStatsPtr->antTemp;
-		sysbusRsp->data[WD_ANT_RF_PLL] = hwStatsPtr->antPll;
-		sysbusRsp->data[WD_ANT_MGC_0] = hwStatsPtr->antMgc0;
-		sysbusRsp->data[WD_ANT_MGC_1] = hwStatsPtr->antMgc1;
-		sysbusRsp->data[WD_ST_DUMMY] = 0; // dummy byte should always be 0
+		// apply status and omit 2 bytes of overhead.
+		memcpy(sysbusRsp->data + WD_SP_PS_VOLT, &(hwStatsPtr->spPlAuxVolt), ST_RET_INFO_LEN);
 
 		if (CircQueuePush(instPtr->txQueue, (void *)sysbusRsp) == false)
 		{
@@ -446,19 +436,19 @@ int32_t SystemBus_HandleCmd(SYSBUS *instPtr)
 	}
 	case CMD_SYS_INFO:
 	{
-		SysMonitor_UpdateSysinfoRaw(data + SYS_INFO_OFFSET);
+		SysMonitor_UpdateSysinfo((SYSINFO *)(data + SYS_INFO_OFFSET));
 		Status = SUCCESS;
 		break;
 	}
 	// TODO
 	case CMD_FLJ_SEND:
 	{
-		SysMonitor_UpdateSendPayloadRaw(data + FLJ_DATA_OFFSET, PAYLOAD_LEN_FLJ_TX); // omit control info
+		SysMonitor_UpdateSendPayload(data + FLJ_DATA_OFFSET, PAYLOAD_LEN_FLJ_TX); // omit control info
 		break;
 	}
 	case CMD_LJ_SEND:
 	{
-		SysMonitor_UpdateSendPayloadRaw(data + LJ_DATA_OFFSET, PAYLOAD_LEN_LJ_TX); // omit control info
+		SysMonitor_UpdateSendPayload(data + LJ_DATA_OFFSET, PAYLOAD_LEN_LJ_TX); // omit control info
 		break;
 	}
 	case CMD_FLJ_POLL:
@@ -479,7 +469,7 @@ int32_t SystemBus_HandleCmd(SYSBUS *instPtr)
 		sysbusRsp->data[WD_CMD] = CMD_FLJ_POLL;
 		sysbusRsp->data[WD_PRD] = MY_PRD_ID;
 		uint32_t dataId;
-		SysMonitor_GetRecvPayloadRaw(sysbusRsp->data + FLJ_DATA_OFFSET, &dataId, PAYLOAD_LEN_FLJ_RX); // omit control info
+		SysMonitor_GetRecvPayload(sysbusRsp->data + FLJ_DATA_OFFSET, &dataId, PAYLOAD_LEN_FLJ_RX); // omit control info
 		if (dataId == DATA_ID_NONE) 
 		{
 			free(sysbusRsp);
@@ -515,7 +505,7 @@ int32_t SystemBus_HandleCmd(SYSBUS *instPtr)
 		sysbusRsp->data[WD_CMD] = CMD_LJ_POLL;
 		sysbusRsp->data[WD_PRD] = MY_PRD_ID;
 		uint32_t dataId;
-		SysMonitor_GetRecvPayloadRaw(sysbusRsp->data + LJ_DATA_OFFSET, &dataId, PAYLOAD_LEN_LJ_RX); // omit control info
+		SysMonitor_GetRecvPayload(sysbusRsp->data + LJ_DATA_OFFSET, &dataId, PAYLOAD_LEN_LJ_RX); // omit control info
 		if (dataId == DATA_ID_NONE) 
 		{
 			free(sysbusRsp);
@@ -535,6 +525,7 @@ int32_t SystemBus_HandleCmd(SYSBUS *instPtr)
 	}
 	case CMD_FLJ_RM_TEST:
 	{
+		SYSLOG *sysLogPtr = &(instPtr->sysLog);
 		if (data[WD_FLJ_RM_TEST] != FLJ_RM_TEST_CODE)
 		{
 			DBG_WARNING("SystemBus::Invalid remote test code!\n");
diff --git a/df_datalink_sp/src/systembus/systembus.h b/df_datalink_sp/src/systembus/systembus.h
index 9c00c8c..6d1675a 100644
--- a/df_datalink_sp/src/systembus/systembus.h
+++ b/df_datalink_sp/src/systembus/systembus.h
@@ -17,10 +17,11 @@
 #define __SYSTEMBUS_H_
 
 /***************************** Include Files *********************************/
-#include "systembus_uart.h" // SystemBus UART driver
-#include "circ_queue.h"
 #include <stdint.h>
 #include <stdbool.h>
+#include "systembus_uart.h" // SystemBus UART driver
+#include "circ_queue.h"
+#include "../system_monitor.h"
 
 /************************** Constant Definitions *****************************/
 /************************** Data Type Definitions ****************************/
@@ -35,6 +36,7 @@ typedef struct
 typedef struct
 {
     SYSBUS_CONFIG config;
+    SYSLOG sysLog;
     SYSBUS_UART *uartInst;
     CIRC_QUEUE *txQueue;
     CIRC_QUEUE *rxQueue;