Store I2S data

[beliyd]

Hello!

I use I2S on nrf52832 custom board with microphone.

1. When data_handler function take place, I see a new data (p_data_received). The first question is: I can copy data from  "m_buffer_rx_1" from function (nrf_drv_i2s_start(m_buffer_rx_1, NULL, I2S_BUFFER_SIZE, 0);) when I will have I2S_BUFFER_SIZE count of data_handler? (Each time when data_handler take place - it is just a new 32bit data and not a full  m_buffer_rx_1 array ?).

2. I have  I2S_BUFFER_SIZE = 200. In debug I see that I need a few seconds (2-3) when I have 200 count of data_handler. This is very slow data from i2s. What can be the problem?

[awneil]

beliyd said:

I can not copy data from p_data_received to some other store

What do you mean by that?

beliyd said:

the pic

what pic?

[beliyd]

the pic under my message

[awneil]

and what is that supposed to show?

[beliyd]

p_data_received have data (not NULL, see right low corner), but variable my_samle_1 as you can see is NULL. I can not understand why the assignment operation does not work.  I tried to use memcpy function to cope p_data_received to other buffer but it is also don't work, other buffer = NULL as a result.

[bjorn-spockeli]

If my_sample_1 is a uint8_t variable, then the following code should do the trick. 

memcpy(&my_sample_1,p_data_received , (sizeof(uint8_t));