revert(eth): 回退SendNoDataCnt无应答兜底复位逻辑

ETH为裸ASCII透传, 普通数据上传服务器不回复0x7A帧,
SendNoDataCnt只增不清, 连续上传11次误触发ETH_RESET硬件复位,
导致TCP连接被重置, 服务器误判网关掉线。

回退上一版新增的SendNoDataCnt全部代码:
- 移除ETH_SEND_NO_DATA_MAX宏和SendNoDataCnt字段
- 移除SEND_DATA中的计数+复位判断
- 移除ETH_RESET/ETH_OFF/接收线程中的清零
保留物理断线清除MuchRegFlag的两处正确修改

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

@@ -10,7 +10,6 @@
 #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,
@@ -29,7 +28,6 @@ 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

@@ -93,7 +93,6 @@ 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();
@@ -176,16 +175,6 @@ 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);
@@ -239,7 +228,6 @@ 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;
@@ -299,7 +287,6 @@ 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