Refactored into multiple files

print.c

@@ -0,0 +1,21 @@
+#include "print.h"
+
+__attribute((__always_inline__))
+char nibbleToHex(uint8_t n) {
+    return n > 9 ? (n - 10) + 'A' : n + '0';
+}
+__attribute((__always_inline__))
+void printByte(uint8_t v, uint16_t *buff) {
+    *(char *)&buff[0] = nibbleToHex((v >> 4) & 0xF);
+    *(char *)&buff[1] = nibbleToHex(v & 0xF);
+}
+__attribute((__always_inline__))
+void printWord(uint16_t v, uint16_t *buff) {
+    printByte(v >> 8, buff);
+    printByte(v, &buff[2]);
+}
+__attribute((__always_inline__))
+void printDword(uint32_t v, uint16_t *buff) {
+    printWord(v >> 16, buff);
+    printWord(v, &buff[4]);
+}