ASCII serial forwarding not working?

[grexjmo]

Subject of the issue

I'm not seeing any ASCII data being forwarded from I2C connection to FP9. I have serial debugging enabled and see "Bytes available:" out the serial port, eventually stopping at 21300 at which point u-center starts reporting "$GPTXT,01,01,00,txbuff alloc*7F"

Your workbench

• What development board or microcontroller are you using? Arduino MKR WIFI 1010 SparkFun
• What version of hardware or breakout board are you using? SparkFun F9P board, and a HC06 bluetooth module
• How is the breakout board wired to your microcontroller? Arduino to F9P via I2C, and Arduino to HC06 module via pins 13/14 (communicating via Serial1)
• How is everything being powered? Both Arduino and F9P via USB to my laptop. HC06 powered from the 3.3V/GND connections on the F9P board
• Are there any additional details that may help us help you? I can get things working via BLE if I'm running everything via AutoPVT, but I need to forward the GGA/VTG messages out to the HC06 (separately, not at the same time). If I try setting the I2C output via "myGPS.setI2COutput(COM_TYPE_NMEA);", the Arduino stops responding with USB failure until I put it back in bootloader mode.

Steps to reproduce

Tell us how to reproduce this issue. Please post stripped down example code demonstrating your issue. 1)Connect to FP9 module via I2C 2)Configure nmea output port to a serial port (same behavior whether Serial to serial monitor or Serial1 to my HC06 module. 3)Optionally enable serial debugging

Expected behavior

I'm expecting to see the $GPGGA messages being forwarded out the serial connection

Actual behavior

"Bytes available: ##" messages are seen out the serial port with serial debugging enabled. Otherwise I see nothing out the serial port. uCenter connection to the FP9 starts showing "$GPTXT,01,01,00,txbuf alloc*7F" once the serial debugging indicates the bytes available caps out at 21300. Example1_BasicNMEARead_Error.txt

[grexjmo]

Figured it out. One of the other examples turned off NMEA output and saved the change. And I assume using the setI2COutput command to NMEA only causes the I2C buffer to hang since it accepts the command but then can't respond. From ucenter I changed the PRT config to UBX+NMEA, and reenabled/disabled the NMEA messages I needed, and it started working.