jtagbone/openocd: add binary mode on JTAGUART to fix "\n" to "\r" remapping that is not wanted in binary mode.

litex/build/openocd.py

@@ -96,7 +96,7 @@ proc jtagstream_drain {tap tx chunk_rx max_rx} {
 proc jtagstream_rxtx {tap client is_poll} {
     if {![$client eof]} {
         if {!$is_poll} {
-            set tx [$client read -nonewline 1]
+            set tx [$client read 1]
         } else {
             set tx ""
         }

litex/tools/litex_server.py

@@ -212,7 +212,7 @@ def main():
     elif args.jtag:
         from litex.tools.litex_term import JTAGUART
         from litex.tools.remote.comm_uart import CommUART
-        bridge = JTAGUART(config=args.jtag_config)
+        bridge = JTAGUART(config=args.jtag_config, binary_mode=True)
         bridge.open()
         print("[CommUART] port: JTAG / ", end="")
         comm = CommUART(os.ttyname(bridge.name), debug=args.debug)

litex/tools/litex_term.py

@@ -126,9 +126,10 @@ class CrossoverUART:
 from litex.build.openocd import OpenOCD
 
 class JTAGUART:
-    def __init__(self, config="openocd_xc7_ft2232.cfg", port=20000): # FIXME: add command line arguments
+    def __init__(self, config="openocd_xc7_ft2232.cfg", port=20000, binary_mode=False): # FIXME: add command line arguments
         self.config      = config
         self.port        = port
+        self.binary_mode = binary_mode
 
     def open(self):
         self.file, self.name = pty.openpty()
@@ -155,6 +156,7 @@ class JTAGUART:
         while True:
             r = os.read(self.file, 1)
             self.tcp.send(r)
+            if not self.binary_mode:
                 if r == bytes("\n".encode("utf-8")):
                     self.tcp.send("\r".encode("utf-8"))
                 self.tcp.send("\n".encode("utf-8"))