/**@brief Function for adding a characteristic for the Continuous Glucose Meter Measurement.
*
* @param[in] p_cgms Service instance.
*
* @return NRF_SUCCESS if characteristic was successfully added, otherwise an error code.
*/
ret_code_t cgms_meas_char_add(nrf_ble_cgms_t * p_cgms)
{
uint8_t num_recs;
uint8_t encoded_cgms_meas[NRF_BLE_CGMS_MEAS_LEN_MAX];
ble_add_char_params_t add_char_params;
ble_cgms_rec_t initial_cgms_rec_value;
memset(&add_char_params, 0, sizeof(add_char_params));
memset(&initial_cgms_rec_value, 0, sizeof(ble_cgms_rec_t));
num_recs = cgms_db_num_records_get();
if (num_recs > 0)
{
uint32_t err_code = cgms_db_record_get(num_recs - 1, &initial_cgms_rec_value);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
}
add_char_params.uuid = BLE_UUID_CGM_MEASUREMENT;
add_char_params.max_len = NRF_BLE_CGMS_MEAS_LEN_MAX;
add_char_params.init_len = cgms_meas_encode(p_cgms,
&initial_cgms_rec_value.meas,
encoded_cgms_meas);
add_char_params.p_init_value = encoded_cgms_meas;
add_char_params.is_var_len = true;
add_char_params.char_props.notify = true;
add_char_params.cccd_write_access = SEC_JUST_WORKS;
return characteristic_add(p_cgms->service_handle,
&add_char_params,
&p_cgms->char_handles.measurment);
}
/**@brief Function for responding to the FIRST or the LAST operation.
*
* @param[in] p_cgms Service instance.
*
* @return NRF_SUCCESS on success, otherwise an error code.
*/
static uint32_t racp_report_records_first_last(nrf_ble_cgms_t * p_cgms)
{
uint32_t err_code;
ble_cgms_rec_t rec;
uint16_t total_records;
uint8_t nb_rec_to_send = 1;
total_records = cgms_db_num_records_get();
if ((p_cgms->racp_data.racp_proc_records_reported != 0) || (total_records == 0))
{
p_cgms->cgms_com_state = STATE_NO_COMM;
}
else
{
if (p_cgms->racp_data.racp_proc_operator == RACP_OPERATOR_FIRST)
{
err_code = cgms_db_record_get(0, &rec);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
}
else if (p_cgms->racp_data.racp_proc_operator == RACP_OPERATOR_LAST)
{
err_code = cgms_db_record_get(total_records - 1, &rec);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
}
err_code = cgms_meas_send(p_cgms, &rec, &nb_rec_to_send);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
p_cgms->racp_data.racp_proc_record_ndx++;
}
return NRF_SUCCESS;
}
/**@brief Function for setting next sequence number by reading the last record in the data base.
*
* @return NRF_SUCCESS on successful initialization of service, otherwise an error code.
*/
static uint32_t next_sequence_number_set(void)
{
uint16_t num_records;
ble_cgms_rec_t rec;
num_records = cgms_db_num_records_get();
if (num_records > 0)
{
// Get last record
uint32_t err_code = cgms_db_record_get(num_records - 1, &rec);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
}
return NRF_SUCCESS;
}
/**@brief Function for responding to the ALL operation.
*
* @param[in] p_cgms Service instance.
*
* @return NRF_SUCCESS on success, otherwise an error code.
*/
static uint32_t racp_report_records_all(nrf_ble_cgms_t * p_cgms)
{
uint16_t total_records = cgms_db_num_records_get();
uint16_t cur_nb_rec;
uint8_t i;
uint8_t nb_rec_to_send;
if (p_cgms->racp_data.racp_proc_record_ndx >= total_records)
{
p_cgms->cgms_com_state = STATE_NO_COMM;
}
else
{
uint32_t err_code;
ble_cgms_rec_t rec[NRF_BLE_CGMS_MEAS_REC_PER_NOTIF_MAX];
cur_nb_rec = total_records - p_cgms->racp_data.racp_proc_record_ndx;
if (cur_nb_rec > NRF_BLE_CGMS_MEAS_REC_PER_NOTIF_MAX)
{
cur_nb_rec = NRF_BLE_CGMS_MEAS_REC_PER_NOTIF_MAX;
}
nb_rec_to_send = (uint8_t)cur_nb_rec;
for (i = 0; i < cur_nb_rec; i++)
{
err_code = cgms_db_record_get(p_cgms->racp_data.racp_proc_record_ndx + i, &(rec[i]));
if (err_code != NRF_SUCCESS)
{
return err_code;
}
}
err_code = cgms_meas_send(p_cgms, rec, &nb_rec_to_send);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
p_cgms->racp_data.racp_proc_record_ndx += nb_rec_to_send;
}
return NRF_SUCCESS;
}
/**@brief Function for responding to the GREATER OR EQUAL operation.
*
* @param[in] p_cgms Service instance.
*
* @return NRF_SUCCESS on success, otherwise an error code.
*/
static ret_code_t racp_report_records_greater_equal(nrf_ble_cgms_t * p_cgms)
{
uint16_t total_rec_nb;
uint16_t total_rec_nb_to_send;
uint16_t rec_nb_left_to_send;
uint8_t nb_rec_to_send;
uint16_t offset;
uint16_t i;
if(p_cgms->racp_data.racp_request.operand_len != 2)
{
if (p_cgms->error_handler != NULL)
{
p_cgms->error_handler(NRF_ERROR_INVALID_LENGTH);
}
}
total_rec_nb = cgms_db_num_records_get();
offset = uint16_decode(p_cgms->racp_data.racp_request.p_operand);
if (offset >= total_rec_nb)
{
p_cgms->cgms_com_state = STATE_NO_COMM;
return NRF_SUCCESS;
}
total_rec_nb_to_send = total_rec_nb - offset;
if (p_cgms->racp_data.racp_proc_record_ndx >= total_rec_nb_to_send)
{
p_cgms->cgms_com_state = STATE_NO_COMM;
}
else
{
uint32_t err_code;
ble_cgms_rec_t rec[NRF_BLE_CGMS_MEAS_REC_PER_NOTIF_MAX];
rec_nb_left_to_send = total_rec_nb_to_send - p_cgms->racp_data.racp_proc_records_reported;
if (rec_nb_left_to_send > NRF_BLE_CGMS_MEAS_REC_PER_NOTIF_MAX)
{
nb_rec_to_send = NRF_BLE_CGMS_MEAS_REC_PER_NOTIF_MAX;
}
else
{
nb_rec_to_send = (uint8_t)rec_nb_left_to_send;
}
p_cgms->racp_data.racp_proc_record_ndx = offset;
for (i = 0; i < nb_rec_to_send; i++)
{
err_code = cgms_db_record_get(p_cgms->racp_data.racp_proc_record_ndx + i, &(rec[i]));
if (err_code != NRF_SUCCESS)
{
return err_code;
}
}
err_code = cgms_meas_send(p_cgms, rec, &nb_rec_to_send);
if (err_code != NRF_SUCCESS)
{
return err_code;
}
p_cgms->racp_data.racp_proc_record_ndx += nb_rec_to_send;
}
return NRF_SUCCESS;
}
