• State Verified Answer
  • Replies 20 replies
  • Subscribers 75 subscribers
  • Views 4360 views
  • Users 0 members are here
Attachments (1) Download All
Nordic Case Info
  • Case ID: 284894
Options

Connecting ds18b20 to nrf9160dk

nrffan18

Hi, 

I am looking to connect the ds18b20 sensor to the nrf9160dk. I followed this post, but when I tried running it, I was getting a "create_nordic_project.py failed (1)" saying "error: cmake failed". 

I am a complete beginner when using the development kit so please bear with my questions. 

I have added "CONFIG_GPIO" in the prj.conf file, is there anything else I should be adding. 

Additionally, should I be making changes to the cmake file? The link above only mentioned the .c and .h file so I wasn't sure what else should be changed. 

If anyone could help me with this or could point me to resources that will help me solve this, I would really appreciate it. 

Update : The code is now running without any build errors but not printing any values. I had been using the hello_world sample to run it before which was giving the error, but then I tried switching to the blinky sample and running on that and it's building and running without any errors. (Would anybody know why this is).

My issue now is that it is not printing any values or anything to the Debug terminal on SES or the LTE Link Monitor. Does anyone know why this may be?

Parents
  • 0

    Hello Nandini,

    nrffan18 said:
    What exactly would I be looking for when examining the dataflow with the logic analyzer/Oscilloscope?

    I’m not familiar with the DS18B20 sensor myself, but if you look at the specification for the 1-wire bus (which you e.g. can do in this data sheet on page 10), you can find its requirements there.

    nrffan18 said:
    I can get access to an oscilloscope so that might be mostly what I use. I am already aware that it is currently sending all the bits as 1 right now so what would be the next step in checking the data flow?

    What you have to verify is that your driver layer sends data/bits according to this specification and that the nRF9160 GPIO sense mechanism is configured correctly in order to be able to receive data/bits.

    Regards,

    Markus

Reply
  • 0

    Hello Nandini,

    nrffan18 said:
    What exactly would I be looking for when examining the dataflow with the logic analyzer/Oscilloscope?

    I’m not familiar with the DS18B20 sensor myself, but if you look at the specification for the 1-wire bus (which you e.g. can do in this data sheet on page 10), you can find its requirements there.

    nrffan18 said:
    I can get access to an oscilloscope so that might be mostly what I use. I am already aware that it is currently sending all the bits as 1 right now so what would be the next step in checking the data flow?

    What you have to verify is that your driver layer sends data/bits according to this specification and that the nRF9160 GPIO sense mechanism is configured correctly in order to be able to receive data/bits.

    Regards,

    Markus

Children
Related
Terms of service