Hi Jason, I am not using Energia , so unfortunately I cannot test your code snippet. I suspect that the cause of your problem might be a too fast BRCLK (the UART clock source). Afaik, the MSP generates the serial clock by dividing the BRCLK, however this division factor cannot be arbitrarily large and thus gives you a lower limit on the BRCLK. I think to be able to send with 1200 baud, you have to use a BRCLK that is 32768 Hz (that would be the frequency of the LFXT, the low frequency oscillator). So maybe check your clock settings if sending works with higher baud rates. Hope that helps, Dan
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