LAUNCHXL-CC2650: Where to add SPI example to project 0?

Gabriel Quiroz

Part Number: LAUNCHXL-CC2650
Other Parts Discussed in Thread: IWR1443BOOST, , CC2650

Hi all,

I have been able to implement a variety of drivers on an empty project and everything seems to be working fine. Now, I'm trying to add SPI functionality to Project 0. My goal for this project is to continually get data from an IWR1443Boost module with the LAUNCHXL-CC2650 module and display this data through a GATT service. However, I am unsure on where to actually incorporate the functionality once I have the handles set up. I currently am trying to implement it Project_Zero_TaskFxn() but have the following warning. It states that x is declared but never referenced, which I am unsure since I am using it with the display driver. When I look in terra term, nothing is displayed, indicating to me that the code following the for(;;) is not doing anything. Does anyone have any suggestions on where to put the spi transactions and the display data? Also, how would I be able to change a service to display the receive buffer for the SPI transaction?

Thanks for the help!

over 6 years ago

0 YiKai Chen over 6 years ago

Guru 735685 points

Try to put "int x;" in the beginning of ProjectZero_taskFxn instead of claiming it right before you use is as x=*(int*)...

0 Gabriel Quiroz over 6 years ago in reply to YiKai Chen

Prodigy 240 points

The weird thing is that it works in project empty, I simply do this so that I could actually see the value 11 when using the display functionality. However, this does not necessarily fix my issue. I tried to display i using Display_print1() but still could not see anything when using terra term. Any ideas?

0 YiKai Chen over 6 years ago in reply to Gabriel Quiroz

Guru 735685 points

What is your Display_print1 function? Have you ever seen it work?

0 Gabriel Quiroz over 6 years ago in reply to YiKai Chen

Prodigy 240 points

Yes, Display_print1() works fine in the empty project. It is just the Display driver example.

0 YiKai Chen over 6 years ago in reply to Gabriel Quiroz

Guru 735685 points

I mean had it worked in your projectzero?

0 Gabriel Quiroz over 6 years ago in reply to YiKai Chen

Prodigy 240 points

It has not worked yet with project zero. Displaying i does not display anything in the terminal

0 YiKai Chen over 6 years ago in reply to Gabriel Quiroz

Guru 735685 points

I don't think latest CC2650 BLE Stack support Display_print. I would suggest you to use System_printf which you can refer to sunmaysky.blogspot.com/.../steps-for-ti-cc26xx-ble-stack.html

0 Marie H over 6 years ago in reply to Gabriel Quiroz

TI__Guru* 81181 points

Hi Gabriel,

As YiKai syas, Project Zero uses System_printf () instead of Display_printf() per default. You can re-write the project if you want.

0 Gabriel Quiroz over 6 years ago in reply to Marie H

Prodigy 240 points

Hi Marie,

I will try that later this evening. Thank you for your help. Any reason why the Display driver does not work? I thought if I imported all the dependancies it should have been fine?

Also, does the location for my SPI transfer code seem like a good location to place it within project 0.

0 Gabriel Quiroz over 6 years ago in reply to Marie H

Prodigy 240 points

How should I debug the project with System_printf()? I am used to debugging via the UART connection (which is why I used Display_printf(), and to do this I would flash the project. However, when I flash the project, the consul does not display anything with System_printf().

0 YiKai Chen over 6 years ago in reply to Gabriel Quiroz

Guru 735685 points

If you don't want to use System_printf, I suppose it would be easier to use UART API, UART_Params_init, UART_open, and UART_write to output debug message on UART.

0 Marie H over 6 years ago in reply to Gabriel Quiroz

TI__Guru* 81181 points

Hi Gabriel,

You can use the UART connection along with System_printf(). There are instructions for running Project Zero and setting up a terminal program such as Putty on your laptop in SimpleLink Academy: software-dl.ti.com/.../ble_01_basic.html

If you're not seeing anything over UART, please verify that you have the correct COM port. You should also switch the USB port to make sure this is not the problem.

In Project Zero, the UART is configured with System_printf(). Since there is only one UART on the board your Display configuration is probably
a) not prioritized
b) not configured correctly.

0 Gabriel Quiroz over 6 years ago in reply to Marie H

Prodigy 240 points

I am going to include this link (processors.wiki.ti.com/.../CC26xx_Ouput_TI-RTOS_Log_statements_over_UART) since it also solved my problem. I also managed to incorporate a second spi task to run simultaneously with the project 0 task.

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LAUNCHXL-CC2650: Where to add SPI example to project 0?