LAUNCHXL-CC1352R1: Looking for consistent example on I2C driver integration

Victor Kazmirenko

Hello!

I am using project zero as base line, now want to add polling of the sensor over I2C. There were several suggestions, one of them is i2ctmp for temperature polling. Should be enough for my needs. What puts me in frustration is use of different APIs. In project zero there is Task_construct(), but I2C example spawns the job using pthread_create(). For the former I am sure that is BIOS API, for the latter search over local help brings no result and I recall that must be something about POSIX threads. I have experience with BIOS, different flavour for C6000, CC1352 is somewhat new to me. What I remember about BIOS - don't intermix BIOS API with other APIs. May I ask gurus to tell my worries are irrelevant.

Thanks

over 2 years ago

0 Luke over 2 years ago

TI__Expert 4535 points

Hi Victor,

Thanks for reaching out! It is my understanding that you should not mix APIs and that you can only use one or the other, not both.

To better assist you, could you share what version of the SDK you are using as well as the version of Code Composer Studio you have installed?

Thanks,

Luke

+1 Clément over 2 years ago in reply to Luke

TI__Guru** 101570 points

Hi,

To add on Luke's answer, we recommend to avoid mixing POSIX and BIOS API as it causes a few side effects when it comes to code maintenance and code size.

In general, I would recommend to review the following lab that should help you modifying the I2C code you have: https://dev.ti.com/tirex/content/cc13xx_cc26xx_simplelink_academy_7_10_03_00/_build_cc13xx_cc26xx_simplelink_academy_7_10_03_00/source/rtos/posix_project_zero/posix_project_zero.html

Also, if needed, I recommend visiting TI developer zone at https://dev.ti.com/ to find more resources.

Best regards,

0 Victor Kazmirenko over 2 years ago in reply to Luke

Guru 13202 points

Hello Luke,

All software must be of the most recent versions. Here what I see

CCS is Version: 12.4.0.00007

SimpleLink CC13XX 26XX SDK 7.10.2.23

+1 Victor Kazmirenko over 2 years ago in reply to Clément

Guru 13202 points

Hello Clément,

That was the reason of my concern. Thank you for pointing towards POSIX training. I can't say I've reached a point where BIOS is too specific, so I should look for higher level abstraction. If I understood contents of that lab right, that project zero is mostly a demo on use of POSIX API, while project zero I am trying to complement contains BLE stack, which was set up using BIOS API. It turns out we are sitting with either empty Tesla at gas station or with RAM on supercharger point. Either way, I think I know what to do next. Thank you.

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LAUNCHXL-CC1352R1: Looking for consistent example on I2C driver integration