[Answered] Clarification on strapping pin MTDO
Posted: Wed Nov 02, 2016 2:46 pm
by kolban
I am looking at the latest release (as of the date of this post) of the ESP-WROOM-32 Datasheet. On page 5 there is a table of the 6 strapping pins used by the ESP32. My puzzle is that the pin known as MTDO is listed twice. Is this an error? Should one of these two instances of MTDO be a different pin?
Re: Clarification on strapping pin MTDO
Posted: Wed Nov 02, 2016 3:06 pm
by WiFive
I don't think there are any consequences to the pin having two functions because they are exclusive to two different modes: flash boot mode and sdio slave download mode.
Re: Clarification on strapping pin MTDO
Posted: Wed Nov 02, 2016 10:26 pm
by ESP_Angus
WiFive is correct. There are some more details in this thread:
http://esp32.com/viewtopic.php?f=12&p=1292