pc-ble-driver 1.0 bandwidth configuration

Question

Hello, 
 I work on application (written in C, compiled with GCC) which use pc-ble-driver 1.0 and nRF51822QFAC with the ble_connectivity (S130 v2.0.0) as BLE Gateway. I need to to change bandwidth configuration but unfortunately I can not do this properly (or it does not work). Every time when I try to set any options using ble_conn_bw_counts_t from ble_enable_params_t struct in sd_ble_enable() I get ERROR 0x03 (NRF_ERROR_INTERNAL) . 
 Handler sd_rpc_status_handler_t returns following codes and messages: 
 
 status code: '4', message: 'Error sending packet to target. Code #3' 
 status code: '4', message: 'Error sending packet to target. Code #13' 
 
 
 This is procedure how I try to do this: 
 Initialize the SoftDevice RPC module 
 physical_layer = sd_rpc_physical_layer_create_uart(serial_port, baud_rate, SD_RPC_FLOW_CONTROL_NONE, SD_RPC_PARITY_NONE);
...
data_link_layer = sd_rpc_data_link_layer_create_bt_three_wire(physical_layer, 1000);
...
transport_layer = sd_rpc_transport_layer_create(data_link_layer, 100);
...
adapter = sd_rpc_adapter_create(transport_layer);
...
sd_rpc_open(adapter, sd_rpc_status_handler, ble_evt_dispatch, log_handler);
...
 
 Enable BLE Stack 
 ble_enable_params_t ble_enable_params;
ble_enable_params.gatts_enable_params.attr_tab_size = BLE_GATTS_ATTR_TAB_SIZE_DEFAULT;
ble_enable_params.gatts_enable_params.service_changed = false;
ble_enable_params.gap_enable_params.periph_conn_count = 1;
ble_enable_params.gap_enable_params.central_conn_count = 2;
ble_enable_params.gap_enable_params.central_sec_count = 1;
ble_enable_params.common_enable_params.vs_uuid_count = 3;

ble_conn_bw_counts_t ble_conn_bw_counts;
ble_conn_bw_counts.tx_counts.high_count = 2;
ble_conn_bw_counts.tx_counts.mid_count = 0;
ble_conn_bw_counts.tx_counts.low_count = 1;
ble_conn_bw_counts.rx_counts.high_count = 2;
ble_conn_bw_counts.rx_counts.mid_count = 0;
ble_conn_bw_counts.rx_counts.low_count = 1;
ble_enable_params.common_enable_params.p_conn_bw_counts = &ble_conn_bw_counts;


err_code = sd_ble_enable(adapter, &ble_enable_params, NULL);
 
 
 The result of this code is ERROR 0x03 (NRF_ERROR_INTERNAL) on sd_ble_enable() . If I remove ble_conn_bw_counts_t structure then sd_ble_enable() returns 0x00 (NRF_SUCCESS) . 
 So could You tell me why this does not work? 
 Mike 
 
 EDIT 1: 
 Anyone? Can somebody tell me what returned to the sd_rpc_status_handler_t messages mean: 
 
 status code: '4', message: 'Error sending packet to target. Code #3' 
 status code: '4', message: 'Error sending packet to target. Code #13' 
 
 ?

Hung Bui · Accepted Answer

Hi Mike, 
 Thanks for reporting the issue. It's actually a bug in the serialization code. 
 It's fixed in the code in SDK v12.1 but since we don't have serialization code for S130 in SDK v12.1 you would need to do the patch in the code for SDK v11. 
 So the bug was that we didn't provide the instance for ble_conn_bw_counts_t struct in the param for sd_ble_enable() in the code. You would need to add this two lines 
 ble_conn_bw_counts_t conn_bw_counts;
params.common_enable_params.p_conn_bw_counts = &conn_bw_counts;
 
 At line 258 in conn_mw_ble.c file in the firmware of \examples\ble_central_and_peripheral\ble_connectivity, right under the declaration of params. 
 After that you can compile the project and flash the hex file to your dongle.