sd_ble_gatts_value_set

[while(1)]

nrf52832.

SDK14.2

Segger ES V3.34a

I would like to send a struct to a characteristic value, 

typedef struct
{
int8_t test1_array[30];
int8_t test2_array[30];
uint16_test3_array[30];
uint32_t test4_array[30];
}data_t;

maybe using...

sd_ble_gatts_value_set

but how to set  ble_gatts_value_t gatts_value;  with the mixed data type?

Does anyone have an example or suggest a better way to pass mixed datatypes to the same characteristic value.

Thanks

[Jared]

Hi

The sd_ble_gatts_value_set function() takes in a ble_gatts_value_t pointer which has a pointer p_value to a uint8_t array. You can therefore typecast your struct to an uint8_t array and send it with the sd_ble_gatts_value_set() function. The attribute value offset parameter can be used to specify which parts of the attribute that you want to change. This can be useful if you only want to change a certain part of the characteristic. 

Documentation: http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s132.api.v0.9.0%2Fgroup___b_l_e___g_a_t_t_s___f_u_n_c_t_i_o_n_s.html&cp=2_3_1_1_6_2_0_4_4_10&anchor=ga2760c51ea71853bd74e2e7e7117ef52a 

Jared