how to get adc data on coapp?

RE: how to get adc data on coapp?

Liverpool007 — Tue, 14 Mar 2017 15:06:43 GMT

thank you sir it is working properly .

RE: how to get adc data on coapp?

Jørgen Holmefjord — Fri, 10 Mar 2017 11:40:40 GMT

Hi, did you use your own example or the one I provided? I see that I set the ADC to use AIN0, which is also used for crystals. If you have not done this already, you should change the line:

static nrf_drv_adc_channel_t m_channel_config = NRF_DRV_ADC_DEFAULT_CHANNEL(NRF_ADC_CONFIG_INPUT_0);

to:

static nrf_drv_adc_channel_t m_channel_config = NRF_DRV_ADC_DEFAULT_CHANNEL(NRF_ADC_CONFIG_INPUT_2);

If you want to use P0.01 (AIN2).

RE: how to get adc data on coapp?

Liverpool007 — Fri, 10 Mar 2017 10:35:43 GMT

i could compile the code.i connected input at pin P0.01 and i was getting default values(482,491,492).even if input was not connected.

RE: how to get adc data on coapp?

Jørgen Holmefjord — Thu, 09 Mar 2017 09:17:01 GMT

Where did you place the example? It should be extracted in nrf51_iot_sdk_0.8.0_f1f6187\Nordic\nrf51\examples\iot and the main.c file should then be found in nrf51_iot_sdk_0.8.0_f1f6187\Nordic\nrf51\examples\iot\coap_adc\ipv6\server. Is this how your setup looks? If it is not placed in the correct directory, your project will not find the files, as the paths are relative.

Also, make sure you added the path to the adc header files to your project as this:

And that you have all the following files (in the specified path):

nrf51_iot_sdk_0.8.0_f1f6187\Nordic\nrf51\components\drivers_nrf\adc\nrf_drv_adc.c
nrf51_iot_sdk_0.8.0_f1f6187\Nordic\nrf51\components\drivers_nrf\adc\nrf_drv_adc.h
nrf51_iot_sdk_0.8.0_f1f6187\Nordic\nrf51\components\drivers_nrf\hal\nrf_adc.c
nrf51_iot_sdk_0.8.0_f1f6187\Nordic\nrf51\components\drivers_nrf\hal\nrf_adc.h

RE: how to get adc data on coapp?

Liverpool007 — Thu, 09 Mar 2017 09:05:31 GMT

yes. i tried your project but i get error cannot open board.h file.so i tried to modify the server project which comes with the iot sdk i added the files as u had described and i get error which is present in this linklink text

RE: how to get adc data on coapp?

Jørgen Holmefjord — Thu, 09 Mar 2017 08:22:57 GMT

Did you create your own project, or did you use the one I provided? If you created your own project, you need to add the path to nrf_drv_adc.h header file to your project. You did copy the entire adc directory from SDK 11 into iot driver folders as I described above?

RE: how to get adc data on coapp?

Liverpool007 — Thu, 09 Mar 2017 07:23:35 GMT

i tried ur code and copied the files but i was getting error cannot read nrf_drv_adc.h. i had added the nrf_drv_adc.c. how do i solve it.

RE: how to get adc data on coapp?

Jørgen Holmefjord — Fri, 03 Mar 2017 14:52:52 GMT

I have made an example, but I have not tested it (I don't have a IoT setup to test on), but I checked that the example compiles and runs.

coap_adc.zip

You need to copy the ADC driver and HAL from SDK 11.0.0 into your nRF51 IoT SDK directory:

Copy the directory components\drivers_nrf\adc from SDK 11.0.0 to Nordic\nrf51\components\drivers_nrf in nRF51 IoT SDK v0.8.0.

Copy the files nrf_adc.c and nrf_adc.h from components\drivers_nrf\hal\ in SDK 11.0.0 into directory Nordic\nrf51\components\drivers_nrf\hal in nRF51 IoT SDK v0.8.0.

Best regards,

Jørgen

RE: how to get adc data on coapp?

Jørgen Holmefjord — Fri, 03 Mar 2017 13:04:45 GMT

Did you try implementing this yourself, like I described here?