CC2340R5: UART_write float value

Bhavik Bhansali

Part Number: CC2340R5
Other Parts Discussed in Thread: SYSCONFIG

Hello Members,

I am new to CCS and TI MCUs. I am suing cc2340R5 mcu and want to send a float value via uart to serial monitor.

float w = 1234.5678;
char str[50];

sprintf(str,"a: %f\r\n", w);
UART_write(uart,str, sizeof(str),NULL);

Note that i tried %0.2f - %f - %0.4f - %4.4f etc but no success. Also note that itried to write the static dat through uart and it is showing properly. So its not an uart config issue. Can any one guide for this??

I am using Code Composer Studio for programing. Also I am trying to modify the uart2callback example code for testing purpose.

over 1 year ago

0 David over 1 year ago

TI__Genius 13205 points

Hello Bhavik,

Thanks for reaching out.

Could you please specify what SDK version are you using?

I would suggest looking into our User Guide material, specially into UART2 drivers reference here.

I guess later on you will like to send data through bluetooth LE, we have an example to send data from a cc23 device configured as peripheral you can take a look at here.

BR,

David.

0 Bhavik Bhansali over 1 year ago in reply to David

Prodigy 85 points

Hi David,

Thanks for the reply.

Simplelink-lowpower-f3-sdk-7.20.00.29 is what i am using.

Thanks for both the suggestion I will lookinto it.

meanwhile if you can help with sending a float data in uart so that i can observe it on serial monitor in PC.

0 David over 1 year ago in reply to Bhavik Bhansali

TI__Genius 13205 points

Hello Bhavik,

Have you tried using UART2_write() functions?

BR,

David.

0 Bhavik Bhansali over 1 year ago in reply to David

Prodigy 85 points

Hello David,

Yes in actual case I am using UART2_write only.

0 David over 1 year ago in reply to Bhavik Bhansali

TI__Genius 13205 points

Hello Bhavik,

I would suggest to look into Display.h File Reference

You can look at this driver and see how this can be implemented at the examples.

Open SysConfig --> Drivers --> Display. Click on "Show/Hide detail help" and then go for Examples.

...

For future references you can do this as well for other drivers.

BR,

David.

0 Bhavik Bhansali over 1 year ago in reply to David

Prodigy 85 points

Hey David,

Thanks for replay was off for few days.

I am now able to use the same code which i kept in the question. I just have to modified the size of char array and it worked for me.

0 David over 1 year ago in reply to Bhavik Bhansali

TI__Genius 13205 points

Hello Bhavik,

Glad to hear that.

I am closing this thread then.

BR,

David.

0 Bhavik Bhansali over 1 year ago in reply to David

Prodigy 85 points

I think there is something wrong here. I am not sure about it but I created a new project using the GCC compiler and now again it's not working again.

Thanks
Bhavik

0 Bhavik Bhansali over 1 year ago

Prodigy 85 points

Solution: https://e2e.ti.com/support/tools/code-composer-studio-group/ccs/f/code-composer-studio-forum/901286/ccs-66ak2g12-printing-floating-point-numbers-using-uart_printf(See the image in thread)
Tested Compiler: GCC

Bluetooth®︎

Bluetooth forum

CC2340R5: UART_write float value