写了点测试报告，增加了提升单数个寄存器读取效率的功能

EWARM/Modbus.ewp

@@ -286,7 +286,7 @@
                 <option>
                     <name>CCAllowList</name>
                     <version>1</version>
-                    <state>11111110</state>
+                    <state>00000000</state>
                 </option>
                 <option>
                     <name>CCDebugInfo</name>
@@ -382,7 +382,7 @@
                 </option>
                 <option>
                     <name>CCOptLevel</name>
-                    <state>3</state>
+                    <state>0</state>
                 </option>
                 <option>
                     <name>CCOptStrategy</name>
@@ -391,7 +391,7 @@
                 </option>
                 <option>
                     <name>CCOptLevelSlave</name>
-                    <state>3</state>
+                    <state>0</state>
                 </option>
                 <option>
                     <name>CompilerMisraRules98</name>

Modbus/Src/modbus_rtu_slave.c

@@ -301,26 +301,40 @@ static uint16_t ModbusProcessReadHolding(const uint8_t *request,uint16_t request
         ModbusSlaveStatistics.illegalValueCount++;
         return ModbusBuildException(request[1], MODBUS_EX_ILLEGAL_VALUE);
     }
-
+    
     if (ModbusAddressRangeIsValid(start, quantity) == 0U)//地址检查
     {
+        if ((start >= 20000U) &&
+        (start < 25000U) &&
+        (quantity > 0U) &&
+        (quantity <= (25000U - start)))goto tx;
         ModbusSlaveStatistics.illegalAddressCount++;
         return ModbusBuildException(request[1], MODBUS_EX_ILLEGAL_ADDRESS);
     }
-
+    tx:
     ModbusTxFrame[0] = ModbusSlaveAddress;
     ModbusTxFrame[1] = 0X03;
     ModbusTxFrame[2] = (uint8_t)(quantity * 2U);
 
     for (index = 0U; index < quantity; index++)
     {
-        value = ModbusHoldingRegisters[start + index];
+        uint16_t address = start + index;
+     /* D20000～D24999映射到D1、D3、D5……D9999 */
+        if (address >= 20000U)
+        {
+            address = (address - 20000U) * 2U + 1U;
+        }
+        value = ModbusHoldingRegisters[address];
         ModbusTxFrame[3U + index * 2U] = (uint8_t)(value >> 8U);
         ModbusTxFrame[4U + index * 2U] = (uint8_t)(value & 0x00FFU);
     }
 
     ModbusAppendCrc(ModbusTxFrame, (uint16_t)(3U + quantity * 2U));
     return (uint16_t)(5U + quantity * 2U);
+
+
+
+
 }
 
 /**