TM4C129 Launchpad and XBee

[lilyhack 3]

I am using TM4C129 Launchpad launchpad and trying to connect XBee Series 2 (S2C) through UART. 

 

Looking into the pinout of TM4C129, I am connecting like below

 

XBee TX <---> RX (UART0)

 

XBee RX <---> TX (UART0)

 

XBee 3.3V <--->  pin#41

 

XBee GND <---> pin#62 

 

I use below code on the LaunchPad at Energia

 

void setup()

{

  Serial.begin(9600);

  //pinMode(13, OUTPUT);   

}



void loop()

{

  Serial.println('H');

  delay(1000);

  Serial.println('L');

  delay(1000);

  

}

 

And the below python code runs on my Mac as a coordinator

 

#!/usr/bin/python



import serial



ser = serial.Serial('/dev/tty.usbserial-A104IC2U', 9600)



while True:

        incoming = ser.readline().strip()

        print '%s' % incoming

But it doesn't work. FYI, this code worked on Arduino.

 

Has anyone tried this before? Any suggestion?

Am I missing some connection? jumper settings? Anything on the code?

[Rei Vilo 695]

Which UART port are you using? You should specify it as the TM4C129 features 8 ports.

[lilyhack 3]

Which UART port are you using? You should specify it as the TM4C129 features 8 ports.

 

UART0

[dubnet 238]

You may want to try using Serial1 (e.g. Serial1.begin) instead of Serial and make your connections to RX1 and TX1. The first serial port on the launchpads is usually tied to the programming portion of the board and is used for as the backchannel serial port for terminal output.

[lilyhack 3]

Not sure how to use UART1 but I used UART3 and used Serial3 in the code and it worked. Thanks.