test usb serial

CMakeLists.txt

@@ -11,4 +11,6 @@ target_link_libraries(bmc
   pico_stdlib
   pico_cyw43_arch_none
 )
+pico_enable_stdio_usb(bmc 1) 
+pico_enable_stdio_uart(bmc 0) 
 pico_add_extra_outputs(bmc)

bmc.c

@@ -1,3 +1,4 @@
+#include <stdio.h>
 #include "pico/stdlib.h"
 #include "pico/cyw43_arch.h"
 
@@ -9,8 +10,10 @@ int main() {
     }
     while (true) {
         cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1);
+        printf("LED on");
         sleep_ms(1000);
         cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0);
+        printf("LED off");
         sleep_ms(1000);
     }
 }