Blink gpio10

CMakeLists.txt

@@ -21,6 +21,7 @@ pico_sdk_init()
 include(example_auto_set_url.cmake)
 # Add blink example
 add_subdirectory(blink)
+add_subdirectory(blink-10)
 
 # Add hello world example
 add_subdirectory(hello_world)

blink-10/CMakeLists.txt

@@ -0,0 +1,12 @@
+add_executable(blink-10
+        blink-10.c
+        )
+
+# pull in common dependencies
+target_link_libraries(blink-10 pico_stdlib)
+
+# create map/bin/hex file etc.
+pico_add_extra_outputs(blink-10)
+
+# add url via pico_set_program_url
+example_auto_set_url(blink-10)

blink-10/blink-10.c

@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include "pico/stdlib.h"
+
+// Blinks an exteranl led on GPIO 10 (works for both pico & pico w)
+// Sends a message over the UART serial port
+// Demonstrates how to declare a debug variable with "volatile" to be "debugger firendly"
+
+int main() {
+
+    // Debug variables: declare with "volatile" to prevent compiler optimization.
+    // Otherwise, the debugger may display the variable's value as "optimized out".
+    volatile long dbgFriendly_loopCtr = 0;
+    long dbgVicious_loopCtr = 0;
+
+    // Initialize LED gpio
+    const uint led_gpio = 10;
+    gpio_init(led_gpio);
+    gpio_set_dir(led_gpio, GPIO_OUT);
+
+    // Initialize chosen serial port
+    stdio_init_all();
+
+    // Loop forever
+    while (true) {
+        // Update debugging variables
+        dbgFriendly_loopCtr++; //  value in the debugger is inspectable
+        dbgVicious_loopCtr++;  //  value in the debugger is "optimized out"
+
+        // Write a message out to the serial port
+        printf("Blinking Pin # %i! \r\n",led_gpio);              
+
+        // Blink LED
+        gpio_put(led_gpio, true);
+        sleep_ms(1000);
+        gpio_put(led_gpio, false);
+        sleep_ms(1000);
+    }
+}