CCS/CC3220SF-LAUNCHXL: The differences between UART_write and UART_print when the UART routed to 20-Pin header connector

Liang Cai

Tool/software: Code Composer Studio

Now,I configure my jumpers to be placed as shown in Figure 14 ,will the UART_print statement in the example write the strings(which are sent to the USB Teminal) into the UART pin and give them to other boards? Should I annotation them?

over 5 years ago

0 Shlomi Itzhak over 5 years ago

TI__Guru 57550 points

Hello,

Yes, this way you connected the UART lines from the CC3220 to the BP interface pins.

Regards,

Shlomi

0 Liang Cai over 5 years ago in reply to Shlomi Itzhak

Prodigy 140 points

Hi,Shlomi

Thank you for your reply!
What I want to ask is what are the differences between the statement"UART_write" and "UART_print" when I use this way to connect the UART lines from the CC3220 to the BP interface pins.

Regards,

Liang

0 Shlomi Itzhak over 5 years ago in reply to Liang Cai

TI__Guru 57550 points

Hello,

There is no real difference between the two.

You can dive into UART_print() and you will see that it goes through Report() and so on until it ends up with UART_write().

UART_write() is the ti_drivers layer that put characters into the UART FIFO.

The UART_print() is some application higher layers that ends up with the same UART write.

Regards,

Shlomi

0 Liang Cai over 5 years ago in reply to Shlomi Itzhak

Prodigy 140 points

Hi,Shlomi

There are many UART_print() in the example which is used to show the strings on the computer(when dubug). But Now I want to send message to other board with UART(by UART_write). Should I delete the UART_print() in the example to prevent the UART_print() write strings to the pins？
Thank you very much!

Regards,

Liang

0 Shlomi Itzhak over 5 years ago in reply to Liang Cai

TI__Guru 57550 points

From the jumpers settings, any print to the terminal will now be directed to the other board (since you routed the lines but kept the same software.

If you would like to connect a second UART lines to the other board and still keep the original terminal connected, you can pick other UART lines and add initialization and configuration in your application.

Shlomi

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CCS/CC3220SF-LAUNCHXL: The differences between UART_write and UART_print when the UART routed to 20-Pin header connector