CCS/CC2650MODA: Interfacing I2C sensor with CC2650MODA

Varad Kulkarni

Part Number: CC2650MODA
Other Parts Discussed in Thread: CC2650STK, CC2650

Tool/software: Code Composer Studio

Hi all,

I am trying to interface Temp & Humidity sensor with CC2650MODA through I2C.

I was able to build and upload "sensortag" from folder "cc2650lp" to CC2650MODA. Change in waveform was visible on mobile app when I toggled connected switch.

Now I want to interface I2C supported sensor, for this I have 2 ways,

1. Make "sensortag" code from folder "cc2650stk" compatible with CC2650MODA and remove unwanted services.

2. Add new sensor service to "sensortag" from folder "cc2650lp". " ( https://e2e.ti.com/support/wireless_connectivity/bluetooth_low_energy/f/538/t/411520 Are we required to do this only ?)

Please suggest me, which way is better ?

over 8 years ago

0 JXS over 8 years ago

TI__Guru** 105180 points

Hi,

Since the CC2650 is a wireless MCU with all code running internal to the MCU, so long as you map your pins correctly it shouldn't matter which approach you take. Just take care to not include code from the sensortag project that has dependencies to pins/external peripherals that are not on your CC2650MODA based board.

Best wishes

0 Varad Kulkarni over 8 years ago in reply to JXS

Intellectual 335 points

Hi JXS,

Thanks for your reply, I tried using "PIN_UNASSIGNED" for almost all pins except LED and button, but still unable to discover CC2650MODA on mobile app.

0020.CC2650STK.h

So I am working on plan 2 -> adding service for new sensor in "simple_peripheral" of "cc2650stk"

Looking deeper in simple_peripheral, we could see, I2C driver are not present in Drivers folder. So I have to add I2C driver and Sensor_Service in this folder.

I am planing to add these files from "sensortag" project and just make changes like I2C address of new sensor and register address specific to new sensor.

Can you suggest me any document or link, which will give me step by step method to add I2C driver and Service_File ?

I am already following (processors.wiki.ti.com/.../Tutorial:_How_to_Create_a_Custom_Bluetooth_Smart_Embedded_Application_with_the_CC2650DK

0 Varad Kulkarni over 8 years ago in reply to JXS

Intellectual 335 points

Hi JXS,

I am trying to add I2C driver to simple peripheral...
Please have a look at
e2e.ti.com/.../614080

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CCS/CC2650MODA: Interfacing I2C sensor with CC2650MODA