diff --git a/cxp_note.md b/cxp_note.md
index da1b210..46762e9 100644
--- a/cxp_note.md
+++ b/cxp_note.md
@@ -39,13 +39,18 @@
   [] flake.nix mod
   [] local_run.sh mod
 ### Gateware
+[] add __init__ for cxp??
+[] Try to fix tight s/h time pins
+[] Heartbeat (is it useful?? lol)
+[] rename circular buffer to slots
+[] add enum for gtx mode (e.g. tx only, rx only, both)
 [] Test out CXP trigger
 [] Region of interest engine
 [] rtio to getting the frame
   - O: trigger
   - I: frame
 
-### Firmware
+### Firmware (design with driver)
 [] Camera linkdown detection
 [] Camera auto linkup/linkdown using threads
 [] API programming