more on tinyusb setup

src/raspi_keyer.cpp

@@ -3,7 +3,10 @@
 #include "pico/multicore.h"
 #include "pico/stdlib.h"
 #include "pico/util/queue.h"
+#include "tusb.h"
+#include "bsp/board.h"
 
+#include "tusb_config.h"
 #include "keyer.h"
 #include "settings.h"
 
@@ -92,7 +95,9 @@ int main()
     //  https://github.com/raspberrypi/pico-sdk/issues/1152#issuecomment-1418248639
 
     setup();
-
+    board_init();
+    tud_init(BOARD_TUD_RHPORT);
+ 
     printf("Hello from core0!\n");
 
     Settings settings{read_settings()};
@@ -108,6 +113,7 @@ int main()
     while (true) {
         // Currently there's nothing to do on core0
         sleep_ms(1000);
+        tud_task();
     }
 
     return 0;