Having trouble programming my esp8211-01 module with Arduino 1.6.4. Getting
warning: espcomm_sync failed
error: espcomm_open failed
messages upon compile.
I am setting up to program esp8211-01 modules through FTDI module from Windows PC through USB cable. Followed the installation instructions using boards manager (no issues so far). Went to select esptool as programmer in IDE and it's not listed in the menu item, even after a relaunch of IDE. Looked at discussions here and did not find any other issues logged. One post says esptool is automatic in 1.6.5, and does not appear in the tools/programmer menu, but no mention of 1.6.4.
Must esptool be selected in Arduino IDE 1.6.4 or not? If not, which programmer should be selected?