add sysex implementation README

README.md

@@ -1,2 +1,51 @@
 # Push Push
 configurable arduino pedalboard
+
+# sysex CONFIG implementation
+
+
+            IDENTIFIER        MESSAGE_TYPE   ACTION   CONTENT_TYPE       
+F0 X_MANID1 X_MANID2 X_PRODID [REQ, REPL] [ GET, SET ]   [...]           F7
+
+const uint8_t X_MANID1 = 0x37; // Manufacturer ID 1
+const uint8_t X_MANID2 = 0x72; // Manufacturer ID 2
+const uint8_t X_PRODID = 0x10; // Product ID
+
+const byte VERSION_MAJOR = 1;
+const byte VERION_MINOR = 0;
+const byte VERSION_PATCH = 0;
+
+const byte REQ = 0x00; // Request
+const byte REP = 0x01; // Replay
+
+const byte GET = 0x00; 
+const byte SET = 0x01;
+
+const byte FAILED = 0x00;
+const byte OK = 0x01;
+
+
+//Where CONTENT_TYPE is: 
+
+// Ask the current configuration to Push Push:
+REQ GET 
+// Push Push answer:
+REPL GET VERSION_MAJOR VERION_MINOR VERSION_PATCH BUTTON_QTY BTN_n_MODIFIER_CODE_1 BTN_n_MODIFIER_CODE_2 BTN_n_MODIFIER_CODE_3 BTN_n_MODIFIER_CODE_4 BTN_n_KEY_CODE [...]
+
+// Store the editor's fields as new configuration in Push Push:
+REQ SET VERSION_MAJOR VERION_MINOR VERSION_PATCH BUTTON_QTY BTN_n_MODIFIER_CODE_1 BTN_n_MODIFIER_CODE_2 BTN_n_MODIFIER_CODE_3 BTN_n_MODIFIER_CODE_4 BTN_n_KEY_CODE [...]
+// Push Push answer
+REPL SET  [OK, FAILED ]
+
+
+per migliorare:
+- https://www.partsnotincluded.com/diy-stream-deck-mini-macro-keyboard/
+
+Nome USB device:
+
+ - https://forum.arduino.cc/t/multiple-leonardos-as-hid-joystick-how-to-change-the-names/402646
+
+ - https://gist.github.com/Hyratel/80017369fedd1bbc9eef4c8e7a896225
+
+ - https://github.com/NicoHood/HID/issues/125
+