CCS/CC1352R: Using UART with TI 15.4/Collector

Dan Hellgren38

Intellectual 530 points

Part Number: CC1352R
Other Parts Discussed in Thread: CC2640, CC1350

Tool/software: Code Composer Studio

I am running the Collector example in TI 15.4.

The example uses System_printf for sending data to the UART, which works fine.

However I would like to use UART_write(uart, "A", 1) ( as in the uart echo example) instead.

If I send:

UART_write(uart, "A", 1);

UART_write(uart, "B", 1);

then the first A will come on the uart and then the program will freeeze.

The uart_echo example work perfectly so it must be som wierd settings in the Collector example.

Please advice

/Dan

over 6 years ago

0 Dan Hellgren38 over 6 years ago

Intellectual 530 points

I also noticed that if I add an A/D conversion the program also freezes.
This behaviour is only in the Collector example.
There must be something strange in the implementation of collector.

0 AB over 6 years ago in reply to Dan Hellgren38

TI__Mastermind 23556 points

Hello Dan,

The collecto application already uses the UART peripheral. When calling System_printf, you are using UART, if you are reopening a uart driver instance or attempting to use the same peripheral this might be causing this problem.

Note that to add new functionality to this example it is best to add a new task in charge of doing this, this way you wont get in the way of the task operations.

Regards,
AB

0 Dan Hellgren38 over 6 years ago in reply to AB

Intellectual 530 points

Hello AB and thanks for the input.

However I do nothing wrong, I dont reopen the uart and I have tryed using separate task.

The problem is easy to describe:

A brand new TI 15.4 sensor works fine. If I then add UART_write(hUart, "abcd",4); at the end of UartPrintf_init(UART_Handle handle) then everything freezes and CCS looses connection with the chip.

I have used MSP432 and CC2640 for many years and I have neever seen this behavior before so it must be something how the sensor/collector code is implemented.

/Dan

0 AB over 6 years ago in reply to Dan Hellgren38

TI__Mastermind 23556 points

Hello Dan,

I am tetsing on my end to see what could potentially be the problem.

Can you give me more details?
What SDK?
What Revision of lauchpad are you using?

Can you try doing the write inside the task, instead off in main?

Regards,
AB

0 Dan Hellgren38 over 6 years ago in reply to AB

Intellectual 530 points

Hi AB and thanks for your support.
I use the latest SDK simplelink_cc13x0_sdk_2_40_00_20
CCS 8.3.0
I have to get back to you about LaunchPad version.
I have tryed inside task och in separate task, no luck.
By the way, where is BOARD_DISPLAY_USE_UART defined? it is not in properties- Predefines Symbols.
Regards
/Dan

0 Dan Hellgren38 over 6 years ago in reply to Dan Hellgren38

Intellectual 530 points

And the LaunchPad is a CC1350 rev 1.1.1

/Dan

0 AB over 6 years ago in reply to Dan Hellgren38

TI__Mastermind 23556 points

The pre defined are now located under Application -> Defines

Sub-1 GHz

Sub-1 GHz forum

CCS/CC1352R: Using UART with TI 15.4/Collector