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west: runners: Fix openocd's rtt shell display

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To use openocd rtt shell in a non-Windows environment,
you need to turn off ICANON and ECHO.
Refer to pyocd to enable a temporary terminal and configure
it correctly.

Signed-off-by: Findlay Feng <i@fengch.me>
This commit is contained in:
Findlay Feng 2025-01-20 10:04:41 +08:00 • committed by Benjamin Cabé
commit 5ce031754a
1 changed files with 22 additions and 0 deletions
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22
scripts/west_commands/runners/openocd.py
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@ -9,11 +9,16 @@
import re
import subprocess
from os import name as os_name
from os import path
from pathlib import Path
from zephyr_ext_common import ZEPHYR_BASE
if os_name != "nt":
import sys
import termios
try: # noqa SIM105
from elftools.elf.elffile import ELFFile
except ImportError:
@ -422,12 +427,29 @@ class OpenOcdBinaryRunner(ZephyrBinaryRunner):
elif command == 'rtt':
self.print_rttserver_message()
server_proc = self.popen_ignore_int(server_cmd)
if os_name != 'nt':
# Save the terminal settings
fd = sys.stdin.fileno()
new_term = termios.tcgetattr(fd)
old_term = termios.tcgetattr(fd)
# New terminal setting unbuffered
new_term[3] = new_term[3] & ~termios.ICANON & ~termios.ECHO
termios.tcsetattr(fd, termios.TCSAFLUSH, new_term)
else:
fd = None
old_term = None
try:
# run the binary with gdb, set up the rtt server (runs to completion)
subprocess.run(gdb_cmd)
# run the rtt client in the foreground
self.run_telnet_client('localhost', self.rtt_port)
finally:
if old_term is not None and fd is not None:
termios.tcsetattr(fd, termios.TCSAFLUSH, old_term)
server_proc.terminate()
server_proc.wait()