diff --git a/litescope/software/driver/analyzer.py b/litescope/software/driver/analyzer.py
index bd7c771..3e1ea46 100644
--- a/litescope/software/driver/analyzer.py
+++ b/litescope/software/driver/analyzer.py
@@ -134,6 +134,13 @@ class LiteScopeAnalyzerDriver:
         self.storage_enable.write(1)
         self.trigger_enable.write(1)
 
+    def clear(self):
+        self.data = DumpData(self.data_width)
+        self.offset = 0
+        self.length = None
+        self.trigger_enable.write(0)
+        self.storage_enable.write(0)
+
     def done(self):
         return self.storage_done.read()
 
@@ -168,6 +175,8 @@ class LiteScopeAnalyzerDriver:
             dump = CSVDump()
         elif ext == ".py":
             dump = PythonDump()
+        elif ext == ".json":
+            dump = JSONDump()
         elif ext == ".sr":
             dump = SigrokDump(samplerate=samplerate)
         else:
diff --git a/litescope/software/dump/__init__.py b/litescope/software/dump/__init__.py
index 0183987..5062041 100644
--- a/litescope/software/dump/__init__.py
+++ b/litescope/software/dump/__init__.py
@@ -1,5 +1,6 @@
 from litescope.software.dump.common import DumpData, DumpVariable, Dump
 from litescope.software.dump.csv import CSVDump
 from litescope.software.dump.python import PythonDump
+from litescope.software.dump.json import JSONDump
 from litescope.software.dump.sigrok import SigrokDump
 from litescope.software.dump.vcd import VCDDump
diff --git a/litescope/software/dump/json.py b/litescope/software/dump/json.py
new file mode 100644
index 0000000..f98be8f
--- /dev/null
+++ b/litescope/software/dump/json.py
@@ -0,0 +1,25 @@
+#
+# This file is part of LiteScope.
+#
+# Copyright (c) 2021 Arnaud Durand <arnaud.durand@unifr.ch>
+# SPDX-License-Identifier: BSD-2-Clause
+
+import json
+
+from litescope.software.dump.common import Dump
+
+
+class JSONDump(Dump):
+    def __init__(self, dump=None):
+        Dump.__init__(self)
+        self.variables = [] if dump is None else dump.variables
+
+    def generate_data(self):
+        return {v.name: v.values for v in self.variables}
+
+    def write(self, filename):
+        with open(filename, "w") as f:
+            json.dump(self.generate_data(), f)
+
+    def read(self, filename):
+        raise NotImplementedError("JSON files can not (yet) be read, please contribute!")