I am attempting to connect an MSP430 with an MSP432 wirelessly by sending UART data through an Xbee. When the receiver Xbee’s DOUT line is not plugged into anything, UART is seen as expected. The problem is that when i connect the DOUT to the 432’s RX input, the “low” voltage level of DOUT jumps from 0 to around 2.5V. The “high” voltage of DOUT remains at 3.3V. So the UART data is seen going between 2.5V and 3.3V. This leads the 432 to not be able to read the UART data.
Does anybody know the cause for this problem or if there is any way to fix it?