LAUNCHXL-CC26X2R1: How to connect a CO sensor to the CC26X2 platform

Hi,

The referenced demo was created on the CC2541. To migrate this demo to the CC26X2 platform, you will need to migrate from the BLE4 stack the BLE5 stack as well as address some SDK and generation differences between the device. We have a helpful migration reference that can be used to guide the migration effort in the documentation: 

https://software-dl.ti.com/simplelink/esd/simplelink_cc2640r2_sdk/1.50.00.58/exports/docs/blestack/ble_user_guide/html/ble-stack-3.x-guide/cc254x-to-cc2640.html

https://software-dl.ti.com/simplelink/esd/simplelink_cc2640r2_sdk/1.50.00.58/exports/docs/blestack/ble_user_guide/html/ble-stack-3.x-guide/cc2640-to-cc2640r2.html

https://dev.ti.com/tirex/content/simplelink_cc13xx_cc26xx_sdk_7_10_02_23/docs/ble5stack/ble_user_guide/html/ble-stack-5.x-guide/porting-guides/cc2640r2_to_cc26x2.html

https://dev.ti.com/tirex/content/simplelink_cc13xx_cc26xx_sdk_7_10_02_23/docs/ble5stack/ble_user_guide/html/ble-stack-5.x-guide/porting-guides/cc2640r2_to_cc26x2.html#porting-ble-stack-to-ble5-stack

https://software-dl.ti.com/codegen/docs/tiarmclang/rel1_0_0_sts/tiarmclang_ug/tiarmclang-portfolio/migration_guide/index.html

Best Regards,

Jan

Hi John,

You can buy CO sensor then read it using the CC26x2 launchpad. I suggest to just create new code for the CO sensor. You can also port existing CO sensor code library to work for CC26x2. Example Arduino code library to TI driver example program. I have done something similar before.

-kel

Hi John,

This is Arduino code library for MQ-9 sensor. MQ-9 sensor can sense carbon monoxide.

https://github.com/SolderedElectronics/Soldered-MQ-Gas-Sensor-Arduino-Library

The analog output is 5V - 0. So you need to step down it to analog reading levels of CC26x2.

If you made this to work this is proof of concept prototype. There could be lots of needed improvements from initial prototype.

I have seen the TI Gas Sensor Platform Reference Design it has been designed very well, but it's old. There are newer CO sensor and better TI BLE MCU's.

Also, if you intend this to be powered from battery you need to test for current consumption. TI provides free tool EnergyTrace at CCS for analyzing the current consumption. However, DC power analyzers provide much accurate results.

-kel