ADC configuration for nRF5340DK SDK Connect SES

Hi, I created an application for testng the sampling of 2 channels on AIN0 and AIN1. The files are attached. I have few doubts.

1. In the adc.h, is  #define  BUFFER_SIZE 2  right or wrong to sample 2 analog channels ? If in future, 3 chhannels are required, may I set #define  BUFFER_SIZE 3. 

2. In the main file, I adc instantiated by binding and then, set up channels using err = adc_channel_setup() .. function. Is it proper way ?

3. As, I copied the most coe from sample program, what is meaning of following ?

#if defined (CONFIG_BOARD_BMS_NRF5340_CPUAPP)
NRF_SAADC->TASKS_CALIBRATEOFFSET = 1;

4. I wrote two sample functions, as in adc.c. Is this proper way to add to sequence ? If, wrong any where, may you make changes and attache corrected code file ?

5. I called adc sampling functions in repeatitive timer. Is the result of adc from AIN0 and AIN1 be avaialble at same index or at different indices in p_sample_buffer[].

Gulzar Singh  

Hello Gulzar,

I have started looking at your files. Could you please send me the whole project so I can try to reproduce it?

Best Regards,

Kazi Afroza Sultana

Hi, here is the code in attached file.

I mean the project folder which contain build file, configure file, cmakelist text file and source file. like the following screenshot:

Hi, I just need answer of three queries as shown in attached image.