tiagocoutinho · December 19, 2023 07:57 · May 13, 2020 · May 13, 2020 · May 13, 2020 · May 13, 2020
diff --git a/README.md b/README.md
@@ -16,7 +16,7 @@ python simulator.py
 #### Run on terminal 3:
 
 ```
-python client "*IDN?"
+python client.py "*IDN?"
 ```
 
 ### References

diff --git a/README.md b/README.md
@@ -1,7 +1,26 @@
-# Virtual serial line 
+## Virtual serial line 
 
 Virtual serial line on linux with socat, python server & client
 
+#### Run on terminal 1:
+```terminal
+socat -d -d pty,raw,echo=0,link=/tmp/cryocon_simulator pty,raw,echo=0,link=/tmp/cryocon
+```
+
+#### Run on terminal 2:
+
+```
+python simulator.py
+```
+
+#### Run on terminal 3:
+
+```
+python client "*IDN?"
+```
+
+### References
+
 [stack overflow reference](https://stackoverflow.com/questions/52187/virtual-serial-port-for-linux)
 
 Alternatives:

diff --git a/README.md b/README.md
@@ -0,0 +1,10 @@
+# Virtual serial line 
+
+Virtual serial line on linux with socat, python server & client
+
+[stack overflow reference](https://stackoverflow.com/questions/52187/virtual-serial-port-for-linux)
+
+Alternatives:
+* [example](https://github.com/cymait/virtual-serial-port-example)
+* [nullmodem](https://github.com/pitti98/nullmodem)
+* [tty0tty](http://sourceforge.net/projects/tty0tty/)
diff --git a/bridge.sh → virtual_serial_line.sh b/bridge.sh → virtual_serial_line.sh
diff --git a/bridge.sh b/bridge.sh
@@ -0,0 +1,2 @@
+# creates the PTYs
+socat -d -d pty,raw,echo=0,link=/tmp/cryocon_simulator pty,raw,echo=0,link=/tmp/cryocon
diff --git a/client.py b/client.py
@@ -0,0 +1,16 @@
+import sys
+import serial
+DEFAULT_ADDR = '/tmp/cryocon'
+DEFAULT_CMD = '*IDN?'
+args = len(sys.argv) - 1
+if args == 0:
+    addr, cmd = DEFAULT_ADDR, DEFAULT_CMD
+elif args == 1:
+    addr, cmd = DEFAULT_ADDR, sys.argv[1]
+else:
+    addr, cmd = sys.argv[1:3]
+
+cmd += '\n'
+s = serial.serial_for_url(addr)
+s.write(cmd.encode())
+print(s.readline())
diff --git a/simulator.py b/simulator.py
@@ -0,0 +1,21 @@
+import sys
+import logging
+
+import serial
+
+DEFAULT_ADDR = '/tmp/cryocon_simulator'
+
+logging.basicConfig(level=logging.INFO)
+
+addr = sys.argv[1] if len(sys.argv) > 1 else DEFAULT_ADDR
+
+conn = serial.serial_for_url(addr)
+logging.info(f'Ready to receive requests on {addr}')
+while True:
+    request = conn.readline()
+    logging.info('REQ: %r', request)
+    request = request.strip().decode().lower()
+    reply = 'Cryo-con,24C,305682,1.05A\n' if request == '*idn?' else 'NACK\n'
+    reply = reply.encode()
+    logging.info('REP: %r', reply)
+    conn.write(reply)
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		# creates the PTYs
		socat -d -d pty,raw,echo=0,link=/tmp/cryocon_simulator pty,raw,echo=0,link=/tmp/cryocon