diff --git a/cores/esp32/Print.cpp b/cores/esp32/Print.cpp index 34584c50..9f7b35da 100644 --- a/cores/esp32/Print.cpp +++ b/cores/esp32/Print.cpp @@ -46,13 +46,16 @@ size_t Print::write(const uint8_t *buffer, size_t size) size_t Print::printf(const char *format, ...) { - char * temp; + char loc_buf[64]; + char * temp = loc_buf; va_list arg; va_start(arg, format); size_t len = vsnprintf(NULL, 0, format, arg); - temp = new char[len+1]; - if(temp == NULL) { - return 0; + if(len > 64){ + temp = new char[len+1]; + if(temp == NULL) { + return 0; + } } len = vsnprintf(temp, len+1, format, arg); write((uint8_t*)temp, len);