pico w go blinky!

CMakeLists.txt

@@ -12,7 +12,10 @@ add_executable(vibe-check
 )
 
 # Add pico_stdlib library which aggregates commonly used features
-target_link_libraries(vibe-check pico_stdlib)
+target_link_libraries(vibe-check
+    pico_stdlib
+    pico_cyw43_arch_none
+)
 
 # create map/bin/hex/uf2 file in addition to ELF.
 pico_add_extra_outputs(vibe-check)

README.md

@@ -0,0 +1,7 @@
+## Build
+
+```
+# env -C lib/pico-sdk/ git submodule update --init
+# env -C build/ cmake .. -G Ninja -DPICO_BOARD=pico_w -DWIFI_SSID=YOUR_SSID_HERE -DWIFI_PASSWORD="your password here"
+# env -C build/ ninja
+```

src/main.c

@@ -1,8 +1,24 @@
 #include <stdio.h>
 #include "pico/stdlib.h"
+#include "pico/cyw43_arch.h"
+
+#ifndef CYW43_WL_GPIO_LED_PIN
+    #error no WiFi LED on board, wrong -DPICO_BOARD?
+#endif
 
 int main() {
-    setup_default_uart();
+    stdio_init_all();
+    if (cyw43_arch_init()) {
+        printf("Wi-Fi init failed");
+        return -1;
+    }
+    while (true) {
         printf("Hello, world!\n");
+        cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1);
+        sleep_ms(250);
+        printf("Goodbye, world!\n");
+        cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0);
+        sleep_ms(250);
+    }
     return 0;
 }