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| author | Ruben Rodriguez Buchillon <coconutruben@chromium.org> | 2020-12-04 12:17:10 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-01-21 06:38:29 +0000 |
| commit | 51a975ec8302a9b441eb5f50e1ed993956379638 (patch) | |
| tree | 1525aadb3d1208cffe4a6d7c4f0a60624d21c8c8 /util | |
| parent | 6719aaa6b470b1732863fd6c003fa638016c4169 (diff) | |
| download | chrome-ec-51a975ec8302a9b441eb5f50e1ed993956379638.tar.gz | |
ec3po: open without a buffer
pty's do not support seek (and tell), so we need to open with buffer=0
for this to work in py3 as well. Additionally, this requires us to use
wb+ rather than ab+ (as 'a' as no meaning on a pty).
BUG=b:173654272
BRANCH=None
// this shown both communication to the uart and from the uart
TEST=sudo servod -b scarlet
dut-control ec_board
ec_board:scarlet
Change-Id: I7d9bff269dfda9d360ea44165c495ceab9c7f21a
Signed-off-by: Ruben Rodriguez Buchillon <coconutruben@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2576139
Reviewed-by: Matthew Blecker <matthewb@chromium.org>
Diffstat (limited to 'util')
| -rw-r--r-- | util/ec3po/interpreter.py | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/util/ec3po/interpreter.py b/util/ec3po/interpreter.py index 66394fe45a..7fced55e61 100644 --- a/util/ec3po/interpreter.py +++ b/util/ec3po/interpreter.py @@ -101,7 +101,11 @@ class Interpreter(object): interpreter_prefix = ('%s - ' % name) if name else '' logger = logging.getLogger('%sEC3PO.Interpreter' % interpreter_prefix) self.logger = LoggerAdapter(logger, {'pty': ec_uart_pty}) - self.ec_uart_pty = open(ec_uart_pty, 'ab+') + # TODO(https://crbug.com/1162189): revist the 2 TODOs below + # TODO(https://bugs.python.org/issue27805, python3.7+): revert to ab+ + # TODO(https://bugs.python.org/issue20074): removing buffering=0 if/when + # that gets fixed, or keep two pty: one for reading and one for writing + self.ec_uart_pty = open(ec_uart_pty, 'r+b', buffering=0) self.ec_uart_pty_name = ec_uart_pty self.cmd_pipe = cmd_pipe self.dbg_pipe = dbg_pipe @@ -223,7 +227,10 @@ class Interpreter(object): if not self.connected: self.logger.debug('UART reconnect request.') # Reopen the PTY. - fileobj = open(self.ec_uart_pty_name, 'ab+') + # TODO(https://bugs.python.org/issue27805, python3.7+): revert to ab+ + # TODO(https://bugs.python.org/issue20074): removing buffering=0 if/when + # that gets fixed, or keep two pty: one for reading and one for writing + fileobj = open(self.ec_uart_pty_name, 'r+b', buffering=0) self.logger.debug('fileobj: %r', fileobj) self.ec_uart_pty = fileobj # Add the descriptor to the inputs. |