Moved action to top level.

Removed old iterations of the project and moved the files from 02-usart
to the root directory since that's the sole place where the action is
and that subproject has outgrown its initial title.

1 files changed, 14 insertions, 0 deletions

diff --git a/src/kern/gpio/sysled.c b/src/kern/gpio/sysled.c
new file mode 100644
index 0000000..a728da3
--- /dev/null
+++ b/src/kern/gpio/sysled.c
@@ -0,0 +1,14 @@
+#include "kern/gpio/sysled.h"
+
+#define SYSLED GPIO_PIN_PB3
+
+gpio_reserved_pin_t get_sysled()
+{
+  if (gpio_pin_in_use(SYSLED)) {
+    return (gpio_reserved_pin_t) { .v_ = SYSLED };
+  }
+  
+  int ec;
+  gpio_pin_opts_t opts = DEFAULT_GPIO_OPTS_OUTPUT;
+  return reserve_gpio_pin(SYSLED, &opts, &ec);
+}