CCS: uart udma demo

Sheetal Patil

Tool/software: Code Composer Studio

Hello, I have tried the uart and udma demo provided. I want to send data through terminal using uart and store it using udma. I read the uart_udma demo but I want to transfer the data from terminal. I am confused how to use the interrupts.

over 5 years ago

0 Ki over 5 years ago

TI__Guru**** 463901 points

Hello,

Which device are you using?

Thanks

0 Sheetal Patil over 5 years ago in reply to Ki

Prodigy 230 points

Ohh I didn't mention the device.

i am working with tiva TMC123GH6PM

0 Ki over 5 years ago in reply to Sheetal Patil

TI__Guru**** 463901 points

Thanks. I will move this to the appropriate forum. The Tiva experts there can help you best.

0 Bob Crosby over 5 years ago

TI__Guru 72500 points

As you noted the udma_demo shows using the uDMA and the UART to transmit data. That works well because the number of characters to send is known at the start. Using the uDMA to receive characters only works well if the number of characters to receive is also known before the transfer starts. If not, such as when an arbitrary length string is ended with a termination character, using interrupts is easier. Inside of the interrupt routine you can identify the termination character and set a flag for further processing.

So before we go further, what type of data are you going to receive? Is it a fixed number of characters, a terminated string or some other protocol?

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CCS: uart udma demo