LAUNCHXL-CC1310: Unable to use 1-wire Interface based DS18B20 temperature sensor.

Keshav Aggarwal

Part Number: LAUNCHXL-CC1310

Hello there,

I'm unable to use 1-wire Interface protocol to interface my DS18B20 temperature sensor. There might be some timing or latency issues or any config issue. Although it works fine with other controllers (AVR Atmega, PIC).

Application is built with TI-Drivers in TI-RTOS.

Any help is appreciated.

Regards,

Keshav

over 4 years ago

0 Keshav Aggarwal over 4 years ago

Expert 1730 points

I'm facing problem when I try to switch pin state between input and ouput using GPIO_setConfig().

0 Eirik V over 4 years ago

TI__Guru 56590 points

Which 1-wire interface are you referring to?

https://e2e.ti.com/support/wireless-connectivity/bluetooth/f/538/p/665624/2447191#2447191

0 Keshav Aggarwal over 4 years ago in reply to Eirik V

Expert 1730 points

Hi Erik,

I'm talking about maxim's 1 wire protocol. https://www.maximintegrated.com/en/design/technical-documents/app-notes/1/126.html

Regards,

Keshav

0 Eirik V over 4 years ago in reply to Keshav Aggarwal

TI__Guru 56590 points

What happens with GPIO_setConfig?

The GPIO module is a portable layer on top of the PIN driver. So you can also consider stating with a PIN driver example and try to modify that for your purpose.

0 Keshav Aggarwal over 4 years ago in reply to Eirik V

Expert 1730 points

its resolved usleep was not good enough for very small delay. So I wrote own delay function and it worked like a charm.

Keshav Aggarwal

Sub-1 GHz

Sub-1 GHz forum

LAUNCHXL-CC1310: Unable to use 1-wire Interface based DS18B20 temperature sensor.