idf.py: add monitor-baud option to monitor command

tools/idf.py

@@ -364,7 +364,7 @@ def erase_flash(action, ctx, args):
     _run_tool("esptool.py", esptool_args, args.build_dir)
 
 
-def monitor(action, ctx, args, print_filter):
+def monitor(action, ctx, args, print_filter, monitor_baud):
     """
     Run idf_monitor.py to watch build output
     """
@@ -387,7 +387,17 @@ def monitor(action, ctx, args, print_filter):
     monitor_args = [PYTHON, idf_monitor]
     if args.port is not None:
         monitor_args += ["-p", args.port]
-    monitor_args += ["-b", project_desc["monitor_baud"]]
+
+    if not monitor_baud:
+        if os.getenv("IDF_MONITOR_BAUD"):
+            monitor_baud = os.getenv("IDF_MONITOR_BAUD", None)
+        elif os.getenv("MONITORBAUD"):
+            monitor_baud = os.getenv("MONITORBAUD", None)
+        else:
+            monitor_baud = project_desc["monitor_baud"]
+
+    monitor_args += ["-b", monitor_baud]
+
     if print_filter is not None:
         monitor_args += ["--print_filter", print_filter]
     monitor_args += [elf_file]
@@ -1107,7 +1117,7 @@ def init_cli():
 
     baud_rate = {
         "names": ["-b", "--baud"],
-        "help": "Baud rate.",
+        "help": "Baud rate for flashing.",
         "scope": "global",
         "envvar": "ESPBAUD",
         "default": 460800,
@@ -1139,21 +1149,31 @@ def init_cli():
                 "callback": monitor,
                 "help": "Display serial output.",
                 "options": [
-                    port,
-                    {
+                    port, {
                         "names": ["--print-filter", "--print_filter"],
-                        "help": (
-                            "Filter monitor output.\n"
-                            "Restrictions on what to print can be specified as a series of <tag>:<log_level> items "
-                            "where <tag> is the tag string and <log_level> is a character from the set "
-                            "{N, E, W, I, D, V, *} referring to a level. "
-                            'For example, "tag1:W" matches and prints only the outputs written with '
-                            'ESP_LOGW("tag1", ...) or at lower verbosity level, i.e. ESP_LOGE("tag1", ...). '
-                            'Not specifying a <log_level> or using "*" defaults to Verbose level.\n'
-                            'Please see the IDF Monitor section of the ESP-IDF documentation '
-                            'for a more detailed description and further examples.'),
-                        "default": None,
-                    },
+                        "help":
+                        ("Filter monitor output.\n"
+                         "Restrictions on what to print can be specified as a series of <tag>:<log_level> items "
+                         "where <tag> is the tag string and <log_level> is a character from the set "
+                         "{N, E, W, I, D, V, *} referring to a level. "
+                         'For example, "tag1:W" matches and prints only the outputs written with '
+                         'ESP_LOGW("tag1", ...) or at lower verbosity level, i.e. ESP_LOGE("tag1", ...). '
+                         'Not specifying a <log_level> or using "*" defaults to Verbose level.\n'
+                         'Please see the IDF Monitor section of the ESP-IDF documentation '
+                         'for a more detailed description and further examples.'),
+                        "default":
+                        None,
+                    }, {
+                        "names": ["--monitor-baud", "-B"],
+                        "type":
+                        click.INT,
+                        "help": ("Baud rate for monitor.\n"
+                                 "If this option is not provided IDF_MONITOR_BAUD and MONITORBAUD "
+                                 "environment variables and project_description.json in build directory "
+                                 "(generated by CMake from project's sdkconfig) "
+                                 "will be checked for default value."),
+                    }
+
                 ],
                 "order_dependencies": [
                     "flash",

tools/idf_monitor.py

@@ -696,7 +696,7 @@ def main():
         '--baud', '-b',
         help='Serial port baud rate',
         type=int,
-        default=os.environ.get('MONITOR_BAUD', 115200))
+        default=os.getenv('IDF_MONITOR_BAUD', os.getenv('MONITORBAUD', 115200)))
 
     parser.add_argument(
         '--make', '-m',