KrisKasprzak
Well-known member
All,
I have a project where I'm using a GPS sensor connected to Teensy 3.2 Serial3 port--the GPS sensor is mounted on a small PCB board and a USB cable between it and my Teensy 3.2 (which is mounted on a custom PCB board as well).
I'm getting data from the GPS sensor (sent from GPS Tx port and read on Teensy Rx port, pin 7), all is well. I was hoping to be able to illuminate a small LED on the GPS sensor via digitalWrite(8, HIGH) and send through Serial3 Tx port as I'm not using the Tx port on the teensy.
The LED stays high. If I comment out my MyGPSSerial.begin(9600); line i can write to the LED through the Port. See my cheezy drawing. Note PCB boards are printed, etc. so i CAN just use a different digital pin.
I'm guessing i can't manually send a high/low signal through Serial3 Tx port. Any way to force teensy to let me write to Tx pin (pin 7)?
Thanks
I have a project where I'm using a GPS sensor connected to Teensy 3.2 Serial3 port--the GPS sensor is mounted on a small PCB board and a USB cable between it and my Teensy 3.2 (which is mounted on a custom PCB board as well).
I'm getting data from the GPS sensor (sent from GPS Tx port and read on Teensy Rx port, pin 7), all is well. I was hoping to be able to illuminate a small LED on the GPS sensor via digitalWrite(8, HIGH) and send through Serial3 Tx port as I'm not using the Tx port on the teensy.
The LED stays high. If I comment out my MyGPSSerial.begin(9600); line i can write to the LED through the Port. See my cheezy drawing. Note PCB boards are printed, etc. so i CAN just use a different digital pin.
I'm guessing i can't manually send a high/low signal through Serial3 Tx port. Any way to force teensy to let me write to Tx pin (pin 7)?
Thanks