diff --git a/devtool.py b/devtool.py
old mode 100644
new mode 100755
index 47ee440..bf02aad
--- a/devtool.py
+++ b/devtool.py
@@ -1,3 +1,4 @@
+#!/usr/bin/python3
 import json
 import sys
 import requests
@@ -24,18 +25,50 @@ def do_login(base_url):
     return session
 
 
-def set_logging(base_url, value):
+def cp_set_dma_debug(base_url, param_name, value):
     session = do_login(base_url)
-    res = session.post(f"{base_url}/dev/cpapicall?f=SetDmaDebug&param=log_bool&value={value}")
-    print(res.content.decode('utf-8'))
+    res = session.post(f"{base_url}/dev/cpapicall", params={
+        "f": "SetDmaDebug",
+        "param": param_name,
+        "value": value
+    })
+    return res.content.decode('utf-8')
+
+
+def cp_get_dma_debug(base_url, param_name):
+    session = do_login(base_url)
+    res = session.post(f"{base_url}/dev/cpapicall", params={
+        "f": "GetDmaDebug",
+        "param": param_name
+    })
+    return res.content.decode('utf-8')
+
+
+def set_logging(base_url, value):
+    print(cp_set_dma_debug(base_url, "log_bool", value))
 
 
 if __name__ == '__main__':
     if len(sys.argv) < 3:
         print(f"Usage: {sys.argv[0]} http(s)://terminal-api logging on|off")
+        print(f"                                            set_dma_debug <param_name> <value>")
+        print(f"                                            get_dma_debug <param_name>")
         exit(1)
 
     if sys.argv[2] == "logging":
-        set_logging(sys.argv[1], {"on": "true", "off": "false"}[sys.argv[3]])
+        if len(sys.argv) != 4:
+            print("Wrong logging usage!")
+        else:
+            set_logging(sys.argv[1], {"on": "true", "off": "false"}[sys.argv[3]])
+    elif sys.argv[2] == "set_dma_debug":
+        if len(sys.argv) != 5:
+            print("Wrong set dma debug usage!")
+        else:
+            print(cp_set_dma_debug(sys.argv[1], sys.argv[3], sys.argv[4]))
+    elif sys.argv[2] == "get_dma_debug":
+        if len(sys.argv) != 4:
+            print("Wrong set dma debug usage!")
+        else:
+            print(cp_get_dma_debug(sys.argv[1], sys.argv[3]))
     else:
         print(f"Unknown action: {sys.argv[1]}")