1 files changed, 19 insertions, 0 deletions
diff --git a/my-common-code/api-asm.S b/my-common-code/api-asm.S
new file mode 100644
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+++ b/my-common-code/api-asm.S
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+/* 
+ * Example of a pure assembly file
+ * For most people, this is normally unnecessary, you can use inline
+ * ASM in a C file, if you even need to use ASM at all.
+ * However, if you reallllly like doing this sort of thing, here's how :)
+ */
+
+.syntax unified
+.thumb
+.section .text
+
+#include <libopencm3/stm32/gpio.h>
+
+.global rev_bytes
+.func rev_bytes  /* only used for debugger */
+.type rev_bytes, STT_FUNC
+rev_bytes:
+    rev r0, r0
+    bx lr