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TMS320F28027F: Using SCI to control a 16x2 LCD screen

Part Number: TMS320F28027F
Other Parts Discussed in Thread: CONTROLSUITE

Hello,

I am using the TMS320F28027F on the C2000 LaunchPad XL for a project that requires data to be written to a SparkFun LCD screen. For example, I need to measure a voltage and display "Voltage = 4.32V" on the screen, where the value updates in real time. 

I have this LCD screen with this backpack. I use a 5V to 3.3V level shifter for the logic, as the backpack requires this higher 5V logic. 

I have been following the ControlSuite example "Example_F2802xSci_FFDLB.c" to attempt to print data to the screen, however, a bunch of jibberish is displayed to the screen, like a mix of letters, spaces, and characters I've never seen before. The backpack claims to use the TTL serial input, but I've been trying to use the SCI module on the microcontroller. I was told they would work the same, but the example seems to have proven that to be untrue. Can someone help me determine how to program the  "TTL" LCD screen with the LaunchPad XL? I am using CCS v7. 

Thank you, 

Jeff Hensal