sd_ble_gatts_hvx datasize error

Question

Hi,
I try to modifie ble_multilink example et send more than one data,
here is my main code code : 
 
 static uint8_t test[4] = {0x41, 0x42, 0x43, 0x44};
 
 
 static uint16_t testLen = 4;
 
 
 
 
 memset(&params, 0, sizeof(params));
 
 
 params.type = BLE_GATT_HVX_NOTIFICATION;
 params.handle = m_lbs.button_char_handles.value_handle;
 params.offset = 0;
 //params.p_data = test;
 params.p_data = (uint8_t*)(&test[0]);
 params.p_len = &testLen;
 err_code = sd_ble_gatts_hvx(m_lbs.conn_handle, &params);
 
 The problem is that sd_ble_gatts_hvx() retrun NRF_ERROR_DATA_SIZE, and I can't get why. 
 any idea ?

Arthur · Accepted Answer

Thanks for answering.
I use s130 and SDK v11, but I found what was wrong.
In ble_lbs.c there is a function static uint32_t button_char_add(ble_lbs_t * p_lbs, const ble_lbs_init_t * p_lbs_init)
wich I think is used to init sd_ble_gatts_hvx(). 
 In this function I replaced this : 
 attr_char_value.p_uuid = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len = sizeof(uint8_t);
attr_char_value.init_offs = 0;
attr_char_value.max_len = sizeof(uint8_t);
attr_char_value.p_value = NULL;
 
 with this : 
 attr_char_value.p_uuid = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len = 6*sizeof(uint8_t);
attr_char_value.init_offs = 0;
attr_char_value.max_len = 6*sizeof(uint8_t);
attr_char_value.p_value = NULL;
 
 And know I can send data.

sd_ble_gatts_hvx datasize error

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