Getting error for data transfer from Peripheral over air (BLE)

[jayesh]

When i am trying to transfer data over air using sd_ble_gatts_hvx() function every time i am getting err_code 12 (NRF_ERROR_DATA_SIZE) error.

Here i can send data from my Android phone to my Peripheral succesfully, But when i try to send data from my Peripheral to android phone i am getting error.

I have checked the size of array which i am passing its only 20 bytes. This same configurations where working for SDK 6.

I am using SDK 11 and softdevice version "s130_nrf51_2.0.0-7.alpha_softdevice" Keil 5 pack version.

Does any one have any idea what am i doing wrong.

[Petter Myhre]

I recommend you to use SDK 11, not SDK11.0.0-2.alpha. Then you will also use S130 2.0.0, not S130 2.0.0-7.alpha. What example are you using? What have you set the maximum length of the characteristic value to? The max_len field of the ble_gatts_attr_t struct you give to sd_ble_gatts_characteristic_add().