14.06 проверка на другом компе

.vscode/arduino.json

@@ -2,5 +2,5 @@
     "sketch": "project\\project.ino",
     "output": "build",
     "board": "arduino:avr:uno",
-    "port": "COM4"
+    "port": "COM6"
 }

main.py

@@ -1,37 +1,46 @@
 from fastapi import FastAPI 
-from pymodbus.client import ModbusSerialClient as ModbusClient
+from pymodbus.client import ModbusSerialClient
-import uvicorn
 import threading 
 import time 
+import logging
+
+serial_port = "COM6"   
+baud_rate = 9600 
+modbus_client = ModbusSerialClient(serial_port, baudrate=baud_rate) 
+modbus_data = "0" 
+
+logging.basicConfig()
+log = logging.getLogger()
+log.setLevel(logging.DEBUG)
+
+def poll_modbus(): 
+    global modbus_data 
+    modbus_client.connect()   
+    while True: 
+        try:        
+            response = modbus_client.read_discrete_inputs(10001, 1, slave=1)   
+            #print(response)
+ 
+            if not response.isError():     
+                modbus_data = response.registers[0] 
+            print(modbus_data)             
+        except: 
+             pass 
+           
+ 
+ 
+threading.Thread(target=poll_modbus, daemon=True).start() 
  
 app = FastAPI() 
  
-# Create a Modbus client instance
+@app.get("/modbus_data") 
-client = ModbusClient(method='rtu', port='COM4', baudrate=9600, timeout=1)
+async def get_modbus_data(): 
-client.connect()
+        return {"modbus_data": modbus_data} 
-
-# Shared variable to store the Modbus register value
-line = '0'
-
-def read_modbus_value():
-    global line
-    while True:
-        # Read holding register (adjust the register address as needed)
-        result = client.read_holding_registers(address=1, count=1, unit=1)
-        if not result.isError():
-            line = str(result.registers[0])
-        time.sleep(1)  # Poll every 1 second
-
-# Start the Modbus reading in a separate thread
-threading.Thread(target=read_modbus_value, daemon=True).start()
-
-@app.get("/stat")
-async def get_stat():
-    return {'state': line}
  
 @app.get("/") 
 async def root(): 
-    return {'message': 'hello world'}
+    return {"message": "Welcome to FastAPI with Modbus"} 
  
 if __name__ == "__main__": 
-    uvicorn.run(app, host="0.0.0.0", port=12346)
+    import uvicorn 
+    uvicorn.run(app, host="0.0.0.0", port=12345)

project/project.ino

@@ -1,20 +1,28 @@
 #include <ModbusSerial.h> 
+const int GPIOCoil = 0; 
 
-// Define pins
+#define MySerial Serial // define serial port used, Serial most of the time, or Serial1, Serial2 ... if available
-#define PIN_INPUT 3
-#define PIN_LED 13
  
-// Create Modbus object
+bool coils[10]; 
-ModbusSerial mb(Serial, 1); // Assuming slave ID is 1
+int pinToRead = 2;  
+ 
+ModbusSerial mb (MySerial, 1);
 
 void setup() {
-  Serial.begin(9600);
+
-  pinMode(PIN_INPUT, INPUT);
+  MySerial.begin (9600, MB_PARITY_NONE); // prefer this line in accordance with the modbus standard.
-  pinMode(PIN_LED, OUTPUT);
+  while (! MySerial)
+    ;
+
+  mb.config (9600);
 }
  
 void loop() { 
-  int sensorVal = digitalRead(PIN_INPUT);
+  // mb.setIsts(0, digitalRead(pinToRead)); 
-  mb.task(); // Update Modbus communication
+  // mb.task();   
-  delay(500);
+  int r = Serial.read();
+  if (r >= 0){
+     Serial.write(r);
+     Serial.write(r);
+  }
 }