ak-homberger / nmea0183-wifi-multiplexer Goto Github PK

Hi,

I just finished reconstructing this. However, after some testing I only get it to work when I leave D8 physically disconnected. The Levelshifter seems to send HIGH as soon as the PCB receives power and causes the booting ESP to head straight into Programming mode. Console says: "waiting for host", and that's forever.

I found this for a possible reason:

Bootloader Modes

The bootloader can go into a number of modes depending on the state of GPIOs 0, 2 and 15. The two useful modes are the UART download mode (for flashing new firmware) and the flash startup mode (which boots from flash).
						GPIO0(D3) | GPIO2(D4) | GPIO15(D8)
UART Download Mode (Programming)			0 	1 	0
Flash Startup (Normal)					1 	1 	0
SD-Card Boot						0 	0 	1

Did you manage to work around this to get the 2nd port activated?

Apparently it seems not to happen using a D1-Mini-Pro (I have none at hand to verify) However on regular D1-Mini (exactly the one you liked to) others also have run into similar problems and reproduced the issue:
https://forum.fhem.de/index.php?topic=71059.0

Hinnerk

Great device!
I have an echo sounder that can transmit nmea data over Wi Fi. I want to transmit this data to the Ardupilot autopilot.
Is it possible to make nmea 0183 received over Wi-Fi network mixed with the first RS232 and transmitted to the second RS232?
Or just received nmea 0183 via Wi-Fi transmitted over RS232.

Regardless of whether I switch off a softserial or not. all nmea data is sent twice. Can this be prevented?