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Original question:

CCS/TMS570LS1227: SciSend only sending firstchar/byte

CCS/TMS570LS1227: Sci TX/RX interrupts both enabled causing only one byte to be sent

Ben Mazerolle
Prodigy 230 points
Part Number: TMS570LS1227
Other Parts Discussed in Thread: HALCOGEN

Tool/software: Code Composer Studio

Hello, 

I'm wanting to use SCI to write to and read from a TM570ls1227PGE using the PuTTy terminal emulator. To do this, I enabled both the SCI RX and TX interrupts in halcogen, but am only receiving a single byte of a string when I attempt to sciSend in CCS. However, when I disable the TX interrupt, sciSend performs normally. 

I'm assuming that this is because SCI is interrupting the RX process to do a TX "handshake" when I have that interrupt enabled. Is that the case? 

As well, is the idea of using a single sciREG to send info to the terminal and write from the terminal even possible? 

Thank you!