Need Sample ADC Program for (ADS1118) with NRF Dongle

Hello,

--> I want to read some analog values from Pressure sensor. I don't know how to read analog input from sensor. Can you give/provide me the code which having an only analog pin declaration, get read value from sensors.

--> I am new at programming nRF52840 and i need some examples for Analog Digital Converter. So how can i make ADC configuration basically ? I tried to understand SAADC example but it uses timer interrupt. I need to use it without any interrupt.

-->I am using NRF52840 with board folder as PCA10056 and s140 as softdevice.

I am waiting for your quick response.

Thanks..

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0 user115289 over 4 years ago

Hi

I am waiting for your reply.
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0 user2116 over 4 years ago in reply to user115289

Hi

Sorry for the slow response. Håkon is currently unavailable, and I will help out in the mean time.

There is no driver for the ADS1118 in either the nRF5 SDK or the nRF Connect SDK unfortunately, so you would need to implement this directly using the SPIM (spi master) driver.

Fortunately the ADS1118 is a relatively simple sensor to interface, there is not a lot of different commands you need to send.

A member of the community provided quite a lot of advice on interfacing the ADS1118 to an nRF device here, I would suggest you start by reading through that.

Best regards
Torbjørn
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0 user2116 over 4 years ago in reply to user115289

Hi

Sorry for the slow response. Håkon is currently unavailable, and I will help out in the mean time.

There is no driver for the ADS1118 in either the nRF5 SDK or the nRF Connect SDK unfortunately, so you would need to implement this directly using the SPIM (spi master) driver.

Fortunately the ADS1118 is a relatively simple sensor to interface, there is not a lot of different commands you need to send.

A member of the community provided quite a lot of advice on interfacing the ADS1118 to an nRF device here, I would suggest you start by reading through that.

Best regards
Torbjørn
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0 user115289 over 4 years ago in reply to user2116

Hello Ovrebekk,

Thanks for your reply. I need to read some sensor data through ADC concepts with NRF52840, Can you please provide some sample code, then it will helpful for me.
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0 user2116 over 4 years ago in reply to user115289

Hi

Would it be sufficient with a sample using the internal ADC of the nRF52840, or it has to be the ADS1118?

Best regards
Torbjørn
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0 user115289 over 4 years ago in reply to user2116

HI,

Thanks for the reply.

Internal ADC means?
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0 user2116 over 4 years ago in reply to user115289

Hi

The nRF52840 has an internal ADC module, called SAADC and documented here.

One of my colleagues made a small sample showing how to use the internal ADC in the nRF9160 using the standard Zephyr ADC driver, and you should be able to do it in a similar way on the nRF52840:
https://github.com/Rallare/fw-nrfconnect-nrf/tree/nrf9160_samples/samples/nrf9160/adc

Best regards
Torbjørn
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0 user115289 over 4 years ago in reply to user2116

Hi,

Thanks for the reply.

This Internal ADC SAADC program is useful for reading any type of sensor value. Is it possible right
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