Read and write is not working in custom characteristics

[Akshay Goyal]

Hi,

i have created some custom characteristics and i am enabling read and write characteristics in that, but when i am trying to write or read some data it seems that it is not working.

// characteristics initialization

memset(&add_char_params, 0, sizeof(add_char_params));
add_char_params.uuid = CUSTOM_VALUE_CHAR_UUID;
add_char_params.uuid_type = p_cus->uuid_type;
add_char_params.init_len = sizeof(uint8_t);
add_char_params.max_len = sizeof(uint8_t);
add_char_params.char_props.read = 1;
add_char_params.char_props.notify = 1;
add_char_params.char_props.write = 1;

add_char_params.read_access = SEC_OPEN;
add_char_params.cccd_write_access = SEC_OPEN;

err_code = characteristic_add(p_cus->service_handle, &add_char_params,
&p_cus->custom_value_handles[2]);

 

[Kenneth]

Hi,

I can't see any obvious wrong here, so I suggest to compare with the ble app blinky to check if you may have missed something:
\nRF5_SDK\examples\ble_peripheral\ble_app_blinky

I assume the err_code is returning success.

Best regards,
Kenneth

[Akshay Goyal]

I have compared it with blinky example, but i am unable to find out what i am missing and why it is not working.  

[Kenneth]

Suggest to check out this thread in addtion:

https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/ble-services-a-beginners-tutorial

[Akshay Goyal]

if i am adding characteristics using sd_ble_gatts_characteristic_add, then it is working.

[Akshay Goyal]

i gone through this, but unable to find why it is not working when i am adding characteristics using characteristic_add