Sending own struct with ble nus

[Juniorprogrammer]

Hi, 

I´m working on a project to send measurement data over ble and receive it. This worked for me, but I want to send the message in my own struct. 

What I found in the ble.nus is that the struct is like this

uint32_t ble_nus_data_send(ble_nus_t * p_nus,
                           uint8_t   * p_data,
                           uint16_t  * p_length,
                           uint16_t    conn_handle);

I do have 4 values of measurement and want to send and receive it as: value1, value2, value3, value4. 

The values will be put in a graph that's why I want it in my own struct as an integer. Is this possible? I did tryed some ways, but it didn't worked out fine.

Can someone help me out?  

[Sigurd]

Hi,

Put the values in an array, and then use the ble_nus_data_send() to send the values.

Snippet:

static uint8_t data_array[LENGTH];
data_array[0] = value1;
data_array[1] = value2;
data_array[2] = value3;
data_array[3] = value4;

uint32_t       err_code;
err_code = ble_nus_data_send(&m_nus, data_array, &length_of_array, m_conn_handle);

[Juniorprogrammer]

Hi Sigurd,

Thanks for your quick reply.

Will this also work if I put floats in the array. Because firstly I did tryed to send a float with ble_nus_data_send, but it didn't accept it because it wants an uint8.

[Sigurd]

Juniorprogrammer said:

Will this also work if I put floats in the array. Because firstly I did tryed to send a float with ble_nus_data_send, but it didn't accept it because it wants an uint8.

See this post: 

 How do I send float data via nus_data_send() function 

[Juniorprogrammer]

I will try this, thank you!

[Juniorprogrammer]

Hi Sigurd,

I tryed but I'm not getting different values.

Did I do someting wrong?