eepprog.py: Add list-devices command

client/helpers/EepromProgrammer.py

@@ -1,5 +1,5 @@
 from serial import Serial
-from typing import Optional
+from typing import Optional, Union
 
 from . import Logger
 
@@ -20,33 +20,49 @@ class EepromProgrammer:
         self._device_file = device
         self._baudrate = baudrate
 
-    # TODO
-    def open(self):
+    def open(self) -> None:
         """
         Open and setup serial port.
         """
         assert self.serial is None, 'Serial port is already opened!'
 
-        self.logger.debug("Setting up serial device '{}' with baudrate {}".format(self._device_file, self._baudrate))
+        self.logger.debug("Opening serial device '{}' with {} bauds".format(self._device_file, self._baudrate))
         self.serial = Serial(self._device_file, self._baudrate)
 
-    def close(self):
-        if self.serial is None:
-            self.logger.debug("Serial port is already closed")
-            return
+    def close(self) -> None:
+        """
+        Closes the serial port.
+        """
+        if self.serial is not None:
+            self.logger.debug("Closing serial port")
+            self.serial.close()
 
-        self.logger.debug("Closing serial port")
-        self.serial.close()
+    def write(self, data: Union[bytes, bytearray]) -> int:
+        """
+        Writes bytes to the serial port and writes debug log.
+        """
+        self.logger.debug('Writing: {}'.format(str(data)))
+        return self.serial.write(data)
 
     # TODO
-    def test(self):
+    def test_command(self) -> None:
         # Open serial port
         if self.serial is None:
             self.open()
 
+        # TODO where to do this? in open() or when needed?
+        self.serial.timeout = 1
+
         # Write a test command
-        self.logger.info("Sending 'INIT' ...")
-        self.serial.write(b"INIT\n")
+        self.logger.info("Sending INIT command ...")
+        self.write(b'INIT BINARY\n')
 
         # Just read some stuff
-        self.logger.info("Read line: ", self.serial.readline(80))
+        self.logger.info("Received line: ", self.serial.readline(80))
+
+        # Send a READ command
+        self.logger.info("Sending READ command ...")
+        self.write(b'READ 0000:0010\n')
+
+        while True:
+            self.logger.info("Received line: ", self.serial.readline(80))