fix(eth): 增加服务器无应答兜底复位+链路断开清除注册标志

1. 新增SendNoDataCnt计数器: Much=ETH时每次发送累加, 连续>10次
   无任何下行数据回应(0x7A帧)则置MuchRegFlag=false并ETH_RESET复位,
   解决服务器在线但不应答时网关一直沉默无感知的问题
2. ETH_WAIT_RECV和ETH_WAIT_SEND检测到物理链路断开时立即清除
   MuchRegFlag, 保证重连后强制重新注册, para显示为false
3. ETH_RESET和ETH_OFF时清零SendNoDataCnt, 避免计数器残留
4. 复位后MuchRegFlag=false使ETH_REG_SVR真正等待注册响应并重试,
   修复原逻辑中复位后注册流程被MuchRegFlag=true跳过的问题

Project/GateWay/source/User/Inc/EthTask.h

@@ -10,6 +10,7 @@
 #define ETH_RECV_TIMEOUT_MAX				(10 * 1000)
 #define ETH_SEND_RETRY_MAX					3
 #define ETH_FIRST_REG_DELAY					(1 * 1000)
+#define ETH_SEND_NO_DATA_MAX				10
 
 typedef enum {
 	ETH_IDEL,
@@ -28,6 +29,7 @@ typedef struct {
 	uint32_t LinkWaitCnt;
 	uint32_t RecvTimeoutCnt;
 	uint8_t SendRetryCnt;
+	uint8_t SendNoDataCnt;
 	bool FirstRegFlag;
 
 	GateWayPara GateWay;

Project/GateWay/source/User/Src/EthTask.c

@@ -93,6 +93,7 @@ void EthLoopHandler(void)
 
 		case ETH_RESET:
 			ETH_DBG_LOG("ETH Reset!\r\n");
+			Eth.SendNoDataCnt = 0;
 			ETH_RESET_CLR();
 			rt_thread_delay(10);
 			ETH_RESET_SET();
@@ -165,6 +166,7 @@ void EthLoopHandler(void)
 					return;
 				if(ETH_LINK_GET() != Reset) {
 					ETH_DBG_LOG("ETH Link Lost!\r\n");
+					Eth.GateWay->MuchRegFlag = false;
 					Eth.Status = ETH_OFF;
 				}
 				else {
@@ -174,6 +176,16 @@ void EthLoopHandler(void)
 			break;
 
 		case ETH_SEND_DATA:
+			if(Eth.GateWay->ConfigPara.Much == CH_ETH) {
+				Eth.SendNoDataCnt++;
+				if(Eth.SendNoDataCnt > ETH_SEND_NO_DATA_MAX) {
+					ETH_DBG_LOG("ETH has no receive data for a long time, Reset!\r\n");
+					Eth.SendNoDataCnt = 0;
+					Eth.GateWay->MuchRegFlag = false;
+					Eth.Status = ETH_RESET;
+					break;
+				}
+			}
 			HexToAscii(Eth.TxBuff, CommUnitSendASCII, Eth.TxLen);
 			EthRevTimeOutCnt = 0;
 			EthUartSend((uint8_t *)CommUnitSendASCII, Eth.TxLen * 2);
@@ -212,6 +224,7 @@ void EthLoopHandler(void)
 
 			if(ETH_LINK_GET() != Reset) {
 				ETH_DBG_LOG("ETH Link Lost During Wait!\r\n");
+				Eth.GateWay->MuchRegFlag = false;
 				Eth.Status = ETH_OFF;
 			}
 
@@ -226,6 +239,7 @@ void EthLoopHandler(void)
 
 		case ETH_OFF:
 			ETH_DBG_LOG("ETH Power Off!\r\n");
+			Eth.SendNoDataCnt = 0;
 			Eth.Status = ETH_IDEL;
 			Eth.ResetDelayCnt = ETH_RESET_DELAY_TIME_MAX;
 			break;
@@ -285,6 +299,7 @@ static void EthRev_Thread_Entry(void *parameter)
 			memset(HexData, 0x00, EthRxLen / 2);
 			uint8_t ret = AsciiToHex(RxBuffTemp, HexData, EthRxLen);
 			if(ret > 0 && HexData[0] == 0x7A) {
+				Eth.SendNoDataCnt = 0;
 				if(GateWay->ConfigPara.Much == CH_ETH)
 					GateWay->MuchRevCallBack(GateWay, HexData, ret);
 				else