Hi Aditya, How are you trying to receive and send data here? I mean, are you trying to perform loopback with the single SCI? If this is the case, then you should need to call the receive DMA first before sending the data. I have examples on SCI DMA with multibuffered, you can have a look on them once if you want. (+) [FAQ] TMS570LC4357: Examples and Demos available for Hercules Controllers (E.g. TMS570x, RM57x and RM46x etc) - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums -- Thanks & regards, Jagadish.
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