CC1310: printf to UART with simplelink & TI RTOS

Craig Easdale

Part Number: CC1310

I'm trying to figure out how to use printf, or system_printf to output data over UART with the CC13x0.

Most of the documentation I've found either only talks about printf to console, or is for the BLE SDK using uart_printf() which doesn't seem to exist for simplelink.

So how do I get a function which allows me to do a printf("value is %d", var) style UART output?

over 7 years ago

0 TER over 7 years ago

TI__Guru**** 317180 points

Do you have to use printf or could you use the display driver (see separate example in the SDK) and use Display_printf?

0 Craig Easdale over 7 years ago in reply to TER

Expert 2170 points

I have previously used the Display_printf, and it was ideal. I needed to implement a UART_read callback though, and I'm not sure how that will work alongside the display driver.

If i can do non-blocking UART reads & writes with the display driver then that is definitely an option! Is this possible?

0 TER over 7 years ago in reply to Craig Easdale

TI__Guru**** 317180 points

Back to your original question,
this post links to a couple of other posts that cover system_printf

e2e.ti.com/.../2274056

Regardless of printing method the print should be done at a time that will not block other tasks etc since printf takes some time.

0 Craig Easdale over 7 years ago in reply to TER

Expert 2170 points

Thanks for the links. I am able to us system_printf to print to console sucessfully, but it's not clear in either of those posts how to re-route that output to UART.

How do I use system_printf to output over UART instead?

0 TER over 7 years ago in reply to Craig Easdale

TI__Guru**** 317180 points

I have not looked into using printf and UART. Not sure if it will be a big difference between Display_printf and printf in your case if both are using UART.

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CC1310: printf to UART with simplelink & TI RTOS