dsp: non-functional code. needs funcall refactor in cc

dsp/main.c

@@ -8,6 +8,18 @@ void init() {
   // will set the period later
 }
 
+int strlen(const char* str) {
+  int i = 0;
+  while(str[i] != '\0') {
+    i++;
+  }
+  return i;
+}
+
+void log(const char* stuff) {
+  uart_writen(uart0, stuff, strlen(stuff));
+}
+
 int main() {
   init();