const char performance_str[] PROGMEM = "performance";
const char echo_str[] PROGMEM = "echo";
-cmdlist_entry_t cmdlist[] PROGMEM = {
+const cmdlist_entry_t cmdlist[] PROGMEM = {
{ test_str, NULL, testrun_stdtest_base64},
{ performance_str, NULL, testrun_performance_base64},
{ echo_str, (void*)1, (void_fpt)echo_ctrl},