touch buttons set LED programs, added another ribbon LED program

also added PRNG

firmware/app/main.c

@@ -29,6 +29,8 @@
 #include "ui/btn.h"
 #include "ui/temp_ui.h"
 
+#include "misc/tinymt.h"
+
 /*
  *@Note
  ***Only PA0--PA15 and PC16--PC17 support input pull-down.
@@ -166,6 +168,9 @@ int main(void)
     // set up user interface
     tempui_init();
 
+    // set up random
+    tinymt32_init(&tinymt32_s, 1337);
+
     // configure AWU to provide ~997Hz wakeup interrupt for main program
     // TODO: confirm if the counter is reset / preloaded
     awu_init();
@@ -175,7 +180,7 @@ int main(void)
         // rendering next LED program output frame
         if (lp_render) {
             lp_render = 0;
-            lp_ribbon_upward(200, 3, 4);            
+            tempui_lp_runprog();
         }
 
         // stay a while