+static unsigned char user_params[MAX_USER_PARAMS] = { 0, 0, 0 };
+static unsigned char user_params_max[MAX_USER_PARAMS] = { 3, 2, 2 };
+
+static unsigned char user_params_state = 0;
+ /*
+ * Here 0 means "no setup currently in progress",
+ * 1 .. MAX_USER_PARAMS means "now short presses increase or decrease
+ * the value of user_params[user_params_state-1]"
+ */
+
+static uint16_t user_params_starttime;
+
+static void do_sleep();
+
+static void toggle_bright_mode()
+{
+ // TODO
+}
+
+static void set_panic_mode()
+{
+ // TODO
+}
+
+unsigned char get_user_param(unsigned char param)
+{
+ if (param < MAX_USER_PARAMS)
+ return user_params[param];
+ return 0; // FIXME: internal error?
+}
+
+static inline void short_press(unsigned char button)
+{
+ unsigned char param;
+
+ if (user_params_state == 0) {
+ if (button == 0)
+ toggle_bright_mode();
+ else
+ set_panic_mode();
+ return;
+ }
+
+ param = user_params_state-1;
+
+ if (button == 0) {
+ if (user_params[param])
+ user_params[param]--;
+ else
+ user_params[param] = user_params_max[param];
+ } else {
+ user_params[param]++;
+
+ if (user_params[param] >= user_params_max[param])
+ user_params[param] = 0;
+ }
+ // FIXME: notify somebody about user_params change?
+
+ // set_status_led(2, user_params[param]);
+
+ user_params_starttime = jiffies;
+}
+
+static inline void long_press(unsigned char button)
+{
+ if (button == 0) {
+ do_sleep();
+ return;
+ }
+
+ // button 1 - cycle through states
+ user_params_state++;
+
+ if (user_params_state >= MAX_USER_PARAMS)
+ user_params_state = 1;
+
+ // set_status_led(1, state);
+ user_params_starttime = jiffies;
+}
+