Use crystal oscilator for system clock

1 files changed, 13 insertions, 0 deletions

diff --git a/main.s b/main.s
new file mode 100644
index 0000000..eb5c8f9
--- /dev/null
+++ b/main.s
@@ -0,0 +1,13 @@
+.syntax unified
+.cpu cortex-m0plus
+.thumb
+
+.type main, %function
+.global main
+
+main:
+  bl start_xosc
+  bl start_pll
+  bl setup_clocks
+  bl setup_gpio
+  b blink