removed socat, using pty

main.py

@@ -1,4 +1,4 @@
-import serial, subprocess, time
+import serial, time, pty, os, threading
 
 import busio
 from digitalio import DigitalInOut, Direction, Pull
@@ -12,20 +12,8 @@ spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
 #rfm = adafruit_rfm69.RFM69(spi, CS, RESET, 868.0)
 rfm = adafruit_rfm9x.RFM9x(spi, CS, RESET, 868.0, baudrate=20000000)
 
-addr = '/tmp/rfmtty'
-addr_client = '/tmp/rfmtty_client'
-baudrate = 115200
-
-cmd=['/usr/bin/socat','-d','-d','PTY,link=%s,raw,echo=0,b%d' %(addr, baudrate), 'PTY,link=%s,raw,echo=0,b%d' %(addr_client, baudrate)]
-socat_proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-time.sleep(1)
-
-ser = serial.Serial(addr, baudrate=baudrate)
-
-packet_len = 120
+def serial_port_reader(ser, rfm):
     while True:
-    packet = None
-    packet = rfm.receive()
         ser_data = bytearray()
         while ser.inWaiting() > 0 and len(ser_data) <= packet_len:
             recieved_byte = ser.read(1)
@@ -35,11 +23,40 @@ while True:
         else:
             print(f'Received serial data: {ser_data}')
             rfm.send(ser_data)
+
+def serial_port_writer(ser, rfm):
+    while True:
+        packet = None
+        packet = rfm.receive()
         if packet is None:
             pass
         else:
-        print(f'Received lora data: {packet}')
-        print(f'RSSI: {rfm.last_rssi} SNR: {rfm.last_snr}')
+            print(f'Received lora RSSI: {rfm.last_rssi} SNR: {rfm.last_snr} data: {packet}')
             ser.write(packet)
 
-socat_proc.kill()
+
+baudrate = 115200
+packet_len = 251
+
+master, slave = pty.openpty()
+port_name = os.ttyname(slave)
+print("Serieller Port: %s" % port_name)
+ser = serial.Serial(port_name, baudrate=baudrate)
+
+reader_thread = threading.Thread(target=serial_port_reader, args=(ser,rfm), daemon=True)
+reader_thread.start()
+writer_thread = threading.Thread(target=serial_port_writer, args=(ser,rfm), daemon=True)
+writer_thread.start()
+
+try:
+    while True:
+        pass
+
+
+except KeyboardInterrupt:
+    print("Programm durch Benutzer unterbrochen.")
+
+finally:
+    virtual_serial_port.close()
+    reader_thread.join()
+    writer_thread.join()