fix

Author: pi-anl

tools/mpremote/mpremote/transport_serial.py

@@ -382,8 +382,8 @@ def umount_local(self):
     "CMD_ILISTDIR_NEXT": 3,
     "CMD_OPEN": 4,
     "CMD_CLOSE": 5,
-    "CMD_READLINE": 6,
-    "CMD_READ": 7,
+    "CMD_READ": 6,
+    "CMD_READLINE": 7,
     "CMD_WRITE": 8,
     "CMD_SEEK": 9,
     "CMD_REMOVE": 10,
@@ -575,11 +575,13 @@ def readline(self):
         c = self.cmd
         c.begin(CMD_READLINE)
         c.wr_s8(self.fd)
-        n = c.rd_u32()
-        buf = bytearray(n)
-        c.rd_bytes(buf)
+        data = c.rd_bytes(None)
         c.end()
-        return bytes(buf)
+        if self.is_text:
+            data = str(data, 'utf8')
+        else:
+            data = bytes(data)
+        return data
 
     def readlines(self):
         ls = []
@@ -872,7 +874,6 @@ def do_read(self):
     def do_readline(self):
         fd = self.rd_s8()
         buf = self.data_files[fd][0].readline()
-        self.wr_u32(len(buf))
         if self.data_files[fd][1]:
             buf = bytes(buf, "utf8")
         self.wr_bytes(buf)