删除发送错误标志，主站软件改C代码

tb/sw/src/MstMain.c

@@ -0,0 +1,132 @@
+
+#include <stdint.h>
+// #include "uart.h"
+// #include "gpio.h"
+// #include "timer.h"
+
+volatile uint32_t *cdr_status = (uint32_t*)( 0x000 + 0x0 ); //read
+volatile uint32_t *cdr_txLen  = (uint32_t*)( 0x000 + 0x4 ); //write
+volatile uint32_t *cdr_txFifo = (uint32_t*)( 0x000 + 0x8 ); //write
+volatile uint32_t *cdr_direct = (uint32_t*)( 0x000 + 0xc ); //write
+
+volatile uint32_t *cdr_softReset = (uint32_t*)( 0x000 + 0x10 ); //write
+volatile uint32_t *cdr_rxLen     = (uint32_t*)( 0x000 + 0x18 ); //read
+volatile uint32_t *cdr_rxFifo    = (uint32_t*)( 0x000 + 0x1c ); //read
+
+
+volatile uint32_t *WriteGpio        = (uint32_t*) ( 0x400);
+volatile uint32_t *ReadGpio         = (uint32_t*) ( 0x400);
+volatile uint32_t *ReadIsLast       = (uint32_t*) ( 0x408);
+
+
+
+
+
+
+	 
+static inline void error() {
+    while(1);
+}
+
+
+
+
+
+void main()
+{
+	uint32_t readDat;
+	uint32_t operator;
+	uint32_t downRecvLen;
+	uint32_t upRecvLen;
+
+	uint32_t slvNum;
+	uint32_t totNum;
+
+	uint32_t isLast;
+
+	while(1){
+
+		*cdr_softReset = 1; //复位脉冲
+		*cdr_direct = 0;
+
+
+
+		//发送下行包头
+		*cdr_txLen = 520; //总长520
+		*cdr_txFifo = (512 << 20) |( 0 << 16) | 0; //负载长度512，操作数0， 参数全0
+		*cdr_txFifo = 0;
+
+		for( uint32_t i = 0; i < 512/4; i ++ ){
+			*cdr_txFifo = i;
+		}
+
+
+		//等待发送完成标志
+		asm volatile (
+			"1:\n"
+			"andi ra, sp, 0x01\n"
+			"beqz ra, 1b\n"
+			"andi sp, sp, 0xFE\n"
+		);
+
+
+		*cdr_softReset = 1; //复位脉冲
+		*cdr_direct = 1;    //方向切换上行
+
+
+		//接收第一个包
+		asm volatile (
+			"1:\n"
+			"andi ra, sp, 0x04\n"
+			"beqz ra, 1b\n"
+			"andi sp, sp, 0xFB\n"
+		);
+				
+		readDat = *cdr_rxFifo;	
+
+
+
+		// operator = (readDat >> 16) & 0xf; //速度不够，不校验
+		upRecvLen = readDat >> 20;
+
+
+		//接收第二个包
+		// asm volatile (
+		// 	"andi ra, sp, 0x08\n"
+		// 	"1:\n"
+		// 	"bnez ra, 1b\n" //error //速度不够，不校验
+		// );
+
+		uint32_t temp = *cdr_rxFifo;
+
+		//上行转发负载
+		for( uint32_t i = 0; i < (upRecvLen >> 2); i ++ ){ //一次传4byte
+			asm volatile (
+				"andi ra, sp, 0x80\n"
+				"1:\n"
+				"bnez ra, 1b\n" //error 速度不够，不再检查接收
+				"lw t1, 0x01c(x0)\n"
+			);
+		}
+
+		//CRC
+		asm volatile (
+			"andi ra, sp, 0x08\n"
+			"1:\n"
+			"bnez ra, 1b\n" //error
+		);
+		uint32_t crc = *cdr_rxFifo; //CRC
+
+		//等待接收完成标志
+		asm volatile (
+			"1:\n"
+			"andi ra, sp, 0x08\n"
+			"beqz ra, 1b\n"
+			"andi sp, sp, 0xF7\n"
+		);
+
+		totNum = (upRecvLen >> 3);
+
+		while(1);
+	}
+}

tb/sw/src/SlvMain.c

@@ -126,6 +126,15 @@ void main()
 			);
 
 
+			if(!isLast){
+				//等待发送完成标志
+				asm volatile (
+					"1:\n"
+					"andi ra, sp, 0x01\n"
+					"beqz ra, 1b\n"
+					"andi sp, sp, 0xFE\n"
+				);
+			}
 
 
 
@@ -152,31 +161,43 @@ void main()
 					"beqz ra, 1b\n"
 					"andi sp, sp, 0xFB\n"
 				);
-
-				readDat = *cdr_rxFifo;
-				operator = (readDat >> 16) & 0xf;
-				upRecvLen = readDat >> 20;
-				totNum = slvNum + (upRecvLen >> 3) - 1;
-
-				//接收第二个包
-				asm volatile (
-					"andi ra, sp, 0x08\n"
-					"1:\n"
-					"bnez ra, 1b\n" //error
-				);
+				
 				readDat = *cdr_rxFifo;	
 
+
+
+				// operator = (readDat >> 16) & 0xf; //速度不够，不校验
+				upRecvLen = readDat >> 20;
+
+
+
+
+				
+
+
+
 				//发送上行包头
 				*cdr_txLen = upRecvLen + 16; //upSendLen + 8
 				*cdr_txFifo = ((upRecvLen + 8) << 20) |( 0 << 16) | 0;
 				*cdr_txFifo = 0;
 
-				for( uint8_t i = 0; i < 8/4; i ++ ){
+				for( uint32_t i = 0; i < 8/4; i ++ ){
 					*cdr_txFifo = 0;
 				}
 
+
+
+				//接收第二个包
+				// asm volatile (
+				// 	"andi ra, sp, 0x08\n"
+				// 	"1:\n"
+				// 	"bnez ra, 1b\n" //error //速度不够，不校验
+				// );
+
+				uint32_t temp = *cdr_rxFifo;
+
 				//上行转发负载
-				for( uint16_t i = 0; i < upRecvLen >> 2; i ++ ){ //一次传4byte
+				for( uint32_t i = 0; i < (upRecvLen >> 2); i ++ ){ //一次传4byte
 					asm volatile (
 						"andi ra, sp, 0x80\n"
 						"1:\n"
@@ -204,19 +225,27 @@ void main()
 					"andi sp, sp, 0xF7\n"
 				);
 
-
+				totNum = slvNum + (upRecvLen >> 3) - 1;
 			} else { //islast
 				//发送上行包头
 				*cdr_txLen = 16; //upSendLen + 8
 				*cdr_txFifo = (8 << 20) |( 0 << 16) | 0;
 				*cdr_txFifo = 0;
 
-				for( uint8_t i = 0; i < 8/4; i ++ ){
+				for( uint32_t i = 0; i < 8/4; i ++ ){
 					*cdr_txFifo = 0;
 				}
+
+
 			}
 
-
+				//等待发送完成标志
+				asm volatile (
+					"1:\n"
+					"andi ra, sp, 0x01\n"
+					"beqz ra, 1b\n"
+					"andi sp, sp, 0xFE\n"
+				);
 
 
 

tb/sw/src/mstMain.S

@@ -14,6 +14,8 @@
 
 
 main:
+    sw x0, 0x010(x0)   # 软复位，写入任意值，0也可以
+    sw x0, 0x00c(x0)   # 配置方向，下行
 
 	li   x6, 520
 	sw	 x6, 0x004(x0) #cdr_0_tx_txLen
@@ -30,7 +32,20 @@ main:
     addi x6, x6, -1         # 递减计数器
     bnez x6, 1b             # 如果计数器不为0，则继续循环
 
-2:	
+
+2:
+    andi ra, sp, 0x01       # 等待发送完成标志位
+    beqz ra, 2b
+    andi sp, sp, 0xFE
+
+    sw x0, 0x010(x0)   # 软复位，写入任意值，0也可以
+    li x6, 1
+    sw x6, 0x00c(x0)   # 配置方向，上行
+
+
+
+
+3:	
 	j 2b 
 
 

tb/sw/src/mstStartup.S

@@ -47,7 +47,8 @@ trap_entry:
 	# q寄存器已经禁用， Without the q-registers, the irq return address will be stored in x3 (gp) and the IRQ bitmask in x4 (tp),
 
 	# addi x15, x4, 0
-
+	or sp, sp, x4
+	
 	picorv32_retirq_insn()