Designing low-power, cloud-connected IoT devices with PSoC® 6 MCU’s and WICED® Wi-Fi/Bluetooth
Summary
Although I a like the video game, it is for sure missing something. That something is IoT. The first IoT thing that we will do to the game is to add a BLE remote control. I wanted a pre-done remote control that could be downloaded from the App store. After looking around a little bit I found GoBle. I published a detailed article about GoBle here, but I’ll explain enough to make it work with the game.
Here is a screen shot of what the remote control looks like. You can see that on the left there is a joystick, and on the right there are some buttons. My son tells me that this is a classic layout for a remote control.
This remote control works as a “Central” meaning it knows how to connect to Peripherals. For this lesson we will turn on the CYW4343W and make it be a Bluetooth Peripheral.
To implement this lesson I will follow these steps:
- Create a folder called “L5GoBle”
- Create a makefile called L5GoBle.mk
- Setup a GATT database by creating GoBle_db.h and GoBle_db.c
- Setup wiced_bt_cfg.c
- Create GoBleThread.c
- Create GoBle.c to startup the GoBleThread
- Build, Program and Test
Create a directory called “L5GoBle”
Create a makefile called L5GoBle.mk
NAME := App_WStudio_L5GoBle $(NAME)_SOURCES := GoBle.c \ GoBleThread.c \ GoBle_db.c \ wiced_bt_cfg.c $(NAME)_INCLUDES := . $(NAME)_COMPONENTS += libraries/drivers/bluetooth/low_energy
Setup a GATT database by creating GoBle_db.h and GoBle_db.c
Create a file called “GoBle_db.h”
// GoBle_db.h #ifndef __GATT_DATABASE_H__ #define __GATT_DATABASE_H__ #include "wiced.h" #define __UUID_GOBLE 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, 0x00, 0x10, 0x00, 0x00, 0xb0, 0xdf, 0x00, 0x00 #define __UUID_GOBLE_SERIALPORTID 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, 0x00, 0x10, 0x00, 0x00, 0xb1, 0xdf, 0x00, 0x00 // ***** Primary Service 'Generic Attribute' #define HDLS_GENERIC_ATTRIBUTE 0x0001 // ***** Primary Service 'Generic Access' #define HDLS_GENERIC_ACCESS 0x0014 // ----- Characteristic 'Device Name' #define HDLC_GENERIC_ACCESS_DEVICE_NAME 0x0015 #define HDLC_GENERIC_ACCESS_DEVICE_NAME_VALUE 0x0016 // ----- Characteristic 'Appearance' #define HDLC_GENERIC_ACCESS_APPEARANCE 0x0017 #define HDLC_GENERIC_ACCESS_APPEARANCE_VALUE 0x0018 // ***** Primary Service 'GoBle' #define HDLS_GOBLE 0x0028 // ----- Characteristic 'SerialPortId' #define HDLC_GOBLE_SERIALPORTID 0x0029 #define HDLC_GOBLE_SERIALPORTID_VALUE 0x002A // ===== Descriptor 'Client Configuration' #define HDLD_GOBLE_SERIALPORTID_CLIENT_CONFIGURATION 0x002B // External definitions extern const uint8_t gatt_database[]; extern const uint16_t gatt_database_len; extern uint8_t BT_LOCAL_NAME[]; extern const uint16_t BT_LOCAL_NAME_CAPACITY; #endif /* __GATT_DATABASE_H__ */
Create a file called “GoBle.c”
/* * This file has been automatically generated by the WICED 20719-B1 Designer. * BLE device's GATT database and device configuration. * */ // GoBle_db.c #include "GoBle_db.h" #include "wiced.h" #include "wiced_bt_uuid.h" #include "wiced_bt_gatt.h" /************************************************************************************* ** GATT server definitions *************************************************************************************/ const uint8_t gatt_database[] = // Define GATT database { /* Primary Service 'Generic Attribute' */ PRIMARY_SERVICE_UUID16 (HDLS_GENERIC_ATTRIBUTE, UUID_SERVICE_GATT), /* Primary Service 'Generic Access' */ PRIMARY_SERVICE_UUID16 (HDLS_GENERIC_ACCESS, UUID_SERVICE_GAP), /* Primary Service 'GoBle' */ PRIMARY_SERVICE_UUID128 (HDLS_GOBLE, __UUID_GOBLE), /* Characteristic 'SerialPortId' */ CHARACTERISTIC_UUID128_WRITABLE (HDLC_GOBLE_SERIALPORTID, HDLC_GOBLE_SERIALPORTID_VALUE, __UUID_GOBLE_SERIALPORTID, LEGATTDB_CHAR_PROP_READ | LEGATTDB_CHAR_PROP_WRITE_NO_RESPONSE | LEGATTDB_CHAR_PROP_WRITE | LEGATTDB_CHAR_PROP_NOTIFY, LEGATTDB_PERM_READABLE | LEGATTDB_PERM_WRITE_CMD | LEGATTDB_PERM_WRITE_REQ), /* Descriptor 'Client Characteristic Configuration' */ CHAR_DESCRIPTOR_UUID16_WRITABLE (HDLD_GOBLE_SERIALPORTID_CLIENT_CONFIGURATION, UUID_DESCRIPTOR_CLIENT_CHARACTERISTIC_CONFIGURATION, LEGATTDB_PERM_READABLE | LEGATTDB_PERM_WRITE_REQ | LEGATTDB_PERM_AUTH_WRITABLE), }; // Length of the GATT database const uint16_t gatt_database_len = sizeof(gatt_database);
Setup wiced_bt_cfg.c
The WICED Bluetooth Configuration file is called “wiced_bt_config.c”. The only change I made from the default is the timeout value of the advertising. You can copy this directly into your file.
/* * This file has been automatically generated by the WICED 20719-B1 Designer. * Device Configuration. * */ /** wiced_bt_cfg.c * * Runtime Bluetooth stack configuration parameters * */ #include "wiced_bt_dev.h" #include "wiced_bt_ble.h" #include "wiced_bt_uuid.h" #include "wiced_bt_gatt.h" #include "wiced_bt_avrc.h" #include "wiced_bt_cfg.h" /* Null-Terminated Local Device Name */ uint8_t BT_LOCAL_NAME[] = { 'G','o','B','l','e','T','e','s','t','\0' }; const uint16_t BT_LOCAL_NAME_CAPACITY = sizeof(BT_LOCAL_NAME); /******************************************************************* * wiced_bt core stack configuration ******************************************************************/ const wiced_bt_cfg_settings_t wiced_bt_cfg_settings = { .device_name = (uint8_t*)BT_LOCAL_NAME, /**< Local device name (NULL terminated) */ .device_class = {0x00, 0x00, 0x00}, /**< Local device class */ .security_requirement_mask = BTM_SEC_NONE, /**< Security requirements mask (BTM_SEC_NONE, or combination of BTM_SEC_IN_AUTHENTICATE, BTM_SEC_OUT_AUTHENTICATE, BTM_SEC_ENCRYPT */ .max_simultaneous_links = 1, /**< Maximum number of simultaneous links to different devices */ /* BR/EDR Scan Configuration */ .br_edr_scan_cfg = { .inquiry_scan_type = BTM_SCAN_TYPE_STANDARD, /**< Inquiry Scan Type (BTM_SCAN_TYPE_STANDARD or BTM_SCAN_TYPE_INTERLACED) */ .inquiry_scan_interval = 0x0000, /**< Inquiry Scan Interval (0 to use default) */ .inquiry_scan_window = 0x0000, /**< Inquiry Scan Window (0 to use default) */ .page_scan_type = BTM_SCAN_TYPE_STANDARD, /**< Page Scan Type (BTM_SCAN_TYPE_STANDARD or BTM_SCAN_TYPE_INTERLACED) */ .page_scan_interval = 0x0000, /**< Page Scan Interval (0 to use default) */ .page_scan_window = 0x0000, /**< Page Scan Window (0 to use default) */ }, /* BLE Scan Settings */ .ble_scan_cfg = { .scan_mode = BTM_BLE_SCAN_MODE_PASSIVE, /**< BLE Scan Mode (BTM_BLE_SCAN_MODE_PASSIVE or BTM_BLE_SCAN_MODE_ACTIVE) */ /* Advertisement Scan Configuration */ .high_duty_scan_interval = WICED_BT_CFG_DEFAULT_HIGH_DUTY_SCAN_INTERVAL, /**< High Duty Scan Interval */ .high_duty_scan_window = WICED_BT_CFG_DEFAULT_HIGH_DUTY_SCAN_WINDOW, /**< High Duty Scan Window */ .high_duty_scan_duration = 5, /**< High Duty Scan Duration in seconds (0 for infinite) */ .low_duty_scan_interval = WICED_BT_CFG_DEFAULT_LOW_DUTY_SCAN_INTERVAL, /**< Low Duty Scan Interval */ .low_duty_scan_window = WICED_BT_CFG_DEFAULT_LOW_DUTY_SCAN_WINDOW, /**< Low Duty Scan Window */ .low_duty_scan_duration = 5, /**< Low Duty Scan Duration in seconds (0 for infinite) */ /* Connection Scan Configuration */ .high_duty_conn_scan_interval = WICED_BT_CFG_DEFAULT_HIGH_DUTY_CONN_SCAN_INTERVAL, /**< High Duty Connection Cycle Connection Scan Interval */ .high_duty_conn_scan_window = WICED_BT_CFG_DEFAULT_HIGH_DUTY_CONN_SCAN_WINDOW, /**< High Duty Connection Cycle Connection Scan Window */ .high_duty_conn_duration = 30, /**< High Duty Connection Cycle Connection Duration in seconds (0 for infinite) */ .low_duty_conn_scan_interval = WICED_BT_CFG_DEFAULT_LOW_DUTY_CONN_SCAN_INTERVAL, /**< Low Duty Connection Cycle Connection Scan Interval */ .low_duty_conn_scan_window = WICED_BT_CFG_DEFAULT_LOW_DUTY_CONN_SCAN_WINDOW, /**< Low Duty Connection Cycle Connection Scan Window */ .low_duty_conn_duration = 30, /**< Low Duty Connection Cycle Connection Duration in seconds (0 for infinite) */ /* Connection Configuration */ .conn_min_interval = WICED_BT_CFG_DEFAULT_CONN_MIN_INTERVAL, /**< Minimum Connection Interval */ .conn_max_interval = WICED_BT_CFG_DEFAULT_CONN_MAX_INTERVAL, /**< Maximum Connection Interval */ .conn_latency = WICED_BT_CFG_DEFAULT_CONN_LATENCY, /**< Connection Latency */ .conn_supervision_timeout = WICED_BT_CFG_DEFAULT_CONN_SUPERVISION_TIMEOUT, /**< Connection Link Supervision Timeout */ }, /* BLE Advertisement Settings */ .ble_advert_cfg = { .channel_map = BTM_BLE_ADVERT_CHNL_37 | /**< Advertising Channel Map (mask of BTM_BLE_ADVERT_CHNL_37, BTM_BLE_ADVERT_CHNL_38, BTM_BLE_ADVERT_CHNL_39) */ BTM_BLE_ADVERT_CHNL_38 | BTM_BLE_ADVERT_CHNL_39, .high_duty_min_interval = WICED_BT_CFG_DEFAULT_HIGH_DUTY_ADV_MIN_INTERVAL, /**< High Duty Undirected Connectable Minimum Advertising Interval */ .high_duty_max_interval = WICED_BT_CFG_DEFAULT_HIGH_DUTY_ADV_MAX_INTERVAL, /**< High Duty Undirected Connectable Maximum Advertising Interval */ .high_duty_duration = 0, /**< High Duty Undirected Connectable Advertising Duration in seconds (0 for infinite) */ .low_duty_min_interval = WICED_BT_CFG_DEFAULT_LOW_DUTY_ADV_MIN_INTERVAL, /**< Low Duty Undirected Connectable Minimum Advertising Interval */ .low_duty_max_interval = WICED_BT_CFG_DEFAULT_LOW_DUTY_ADV_MAX_INTERVAL, /**< Low Duty Undirected Connectable Maximum Advertising Interval */ .low_duty_duration = 60, /**< Low Duty Undirected Connectable Advertising Duration in seconds (0 for infinite) */ .high_duty_directed_min_interval = WICED_BT_CFG_DEFAULT_HIGH_DUTY_DIRECTED_ADV_MIN_INTERVAL, /**< High Duty Directed Minimum Advertising Interval */ .high_duty_directed_max_interval = WICED_BT_CFG_DEFAULT_HIGH_DUTY_DIRECTED_ADV_MAX_INTERVAL, /**< High Duty Directed Maximum Advertising Interval */ .low_duty_directed_min_interval = WICED_BT_CFG_DEFAULT_LOW_DUTY_DIRECTED_ADV_MIN_INTERVAL, /**< Low Duty Directed Minimum Advertising Interval */ .low_duty_directed_max_interval = WICED_BT_CFG_DEFAULT_LOW_DUTY_DIRECTED_ADV_MAX_INTERVAL, /**< Low Duty Directed Maximum Advertising Interval */ .low_duty_directed_duration = 30, /**< Low Duty Directed Advertising Duration in seconds (0 for infinite) */ .high_duty_nonconn_min_interval = WICED_BT_CFG_DEFAULT_HIGH_DUTY_NONCONN_ADV_MIN_INTERVAL, /**< High Duty Non-Connectable Minimum Advertising Interval */ .high_duty_nonconn_max_interval = WICED_BT_CFG_DEFAULT_HIGH_DUTY_NONCONN_ADV_MAX_INTERVAL, /**< High Duty Non-Connectable Maximum Advertising Interval */ .high_duty_nonconn_duration = 30, /**< High Duty Non-Connectable Advertising Duration in seconds (0 for infinite) */ .low_duty_nonconn_min_interval = WICED_BT_CFG_DEFAULT_LOW_DUTY_NONCONN_ADV_MIN_INTERVAL, /**< Low Duty Non-Connectable Minimum Advertising Interval */ .low_duty_nonconn_max_interval = WICED_BT_CFG_DEFAULT_LOW_DUTY_NONCONN_ADV_MAX_INTERVAL, /**< Low Duty Non-Connectable Maximum Advertising Interval */ .low_duty_nonconn_duration = 0, /**< Low Duty Non-Connectable Advertising Duration in seconds (0 for infinite) */ }, /* GATT Configuration */ .gatt_cfg = { .appearance = 0x0000, /**< GATT Appearance */ .client_max_links = 1, /**< Client Config: Maximum number of servers that local client can connect to */ .server_max_links = 1, /**< Server Config: Maximum number of remote client connections allowed by local server */ .max_attr_len = 512, /**< Maximum attribute length; wiced_bt_cfg must have a corresponding buffer pool that can hold this length */ .max_mtu_size = 515, /**< Maximum MTU size for GATT connections, should be between 23 and (max_attr_len + 5) */ }, /* RFCOMM Configuration */ .rfcomm_cfg = { .max_links = 0, /**< Maximum number of simultaneous connected remote devices */ .max_ports = 0, /**< Maximum Number of simultaneous RFCOMM ports */ }, /* Application-Managed L2CAP Protocol Configuration */ .l2cap_application = { .max_links = 0, /**< Maximum Number of Application-Managed L2CAP Links (BR/EDR and BLE) */ .max_psm = 0, /**< Maximum Number of Application-Managed BR/EDR PSMs */ .max_channels = 0, /**< Maximum Number of Application-Managed BR/EDR Channels */ .max_le_psm = 0, /**< Maximum Number of Application-Managed LE PSMs */ .max_le_channels = 0, /**< Maximum Number of Application-Managed LE Channels */ .max_le_l2cap_fixed_channels = 0, /**< Maximum Number of Application-Managed LE L2CAP Fixed Channnels supported (in addition to mandatory channels 4, 5, and 6 */ }, /* Audio/Video Distribution Configuration */ .avdt_cfg = { .max_links = 0, /**< Maximum Number of simultaneous Audio/Video links */ .max_seps = 0, /**< Maximum Number of stream end points */ }, /* AVRC Configuration */ .avrc_cfg = { .roles = 0, /**< Local Roles supported (AVRC_CONN_INITIATOR or AVRC_CONN_ACCEPTOR) */ .max_links = 0, /**< Maximum simultaneous Remote Control links */ }, /* LE Address Resolution Database Settings */ .addr_resolution_db_size = 10, /**< LE Address Resolution Database Size - Effective only for pre-4.2 controller */ .max_number_of_buffer_pools = 4, /**< Maximum number of buffer pools in p_btm_cfg_buf_pools and by wiced_create_pool */ .rpa_refresh_timeout = 0, /**< Interval of random address refreshing - secs */ }; /******************************************************************* * wiced_bt_stack buffer pool configuration * * Configure buffer pools used by the stack * * Pools must be ordered in increasing buf_size. * If a pools runs out of buffers, the next pool will be used. ******************************************************************/ const wiced_bt_cfg_buf_pool_t wiced_bt_cfg_buf_pools[WICED_BT_CFG_NUM_BUF_POOLS] = { /* { buf_size, buf_count, }, */ { 64, 12, }, /* Small Buffer Pool */ { 360, 4, }, /* Medium Buffer Pool (used for HCI & RFCOMM control messages, min recommended size is 360) */ { 512, 4, }, /* Large Buffer Pool (used for HCI ACL messages) */ { 1024, 2, }, /* Extra Large Buffer Pool (used for AVDT media packets and miscellaneous; if not needed, set buf_count to 0) */ };
Create GoBleThread.c
In order for the GoBleThread to work you need:
- The includes for the GATT Database and the WICED bluetooth stack.
- External References to the GATT Database.
- A few function prototypes.
- A function called “GoBleThread_start” to startup the Bluetooth stack and get things going. This includes providing Bluetooth management and GATT event handler functions.
#include "GoBle_db.h" #include "wiced.h" #include "wiced_bt_ble.h" #include "wiced_bt_gatt.h" #include "wiced_bt_stack.h" /******************************************************************* * Variable Definitions ******************************************************************/ extern const wiced_bt_cfg_settings_t wiced_bt_cfg_settings; extern const wiced_bt_cfg_buf_pool_t wiced_bt_cfg_buf_pools[WICED_BT_CFG_NUM_BUF_POOLS]; /******************************************************************* * Function Prototypes ******************************************************************/ static wiced_bt_dev_status_t goble_management_callback ( wiced_bt_management_evt_t event, wiced_bt_management_evt_data_t *p_event_data ); static void goble_set_advertisement_data ( void ); static wiced_bt_gatt_status_t goble_event_handler ( wiced_bt_gatt_evt_t event, wiced_bt_gatt_event_data_t *p_event_data ); /******************************************************************* * Function Definitions ******************************************************************/ void GoBleThread_start(void) { wiced_bt_stack_init(goble_management_callback, &wiced_bt_cfg_settings, wiced_bt_cfg_buf_pools); }
Create a function to setup the advertising data. The GoBle iOS App looks for Peripherals that are advertising the UUID of the GoBLE Service.
/* Set Advertisement Data */ void goble_set_advertisement_data( void ) { wiced_bt_ble_advert_elem_t adv_elem[3] = { 0 }; uint8_t adv_flag = BTM_BLE_GENERAL_DISCOVERABLE_FLAG | BTM_BLE_BREDR_NOT_SUPPORTED; uint8_t num_elem = 0; /* Advertisement Element for Flags */ adv_elem[num_elem].advert_type = BTM_BLE_ADVERT_TYPE_FLAG; adv_elem[num_elem].len = sizeof(uint8_t); adv_elem[num_elem].p_data = &adv_flag; num_elem++; uint8_t gobleuuid[] = {__UUID_GOBLE}; /* Advertisement Element for Name */ adv_elem[num_elem].advert_type = BTM_BLE_ADVERT_TYPE_128SRV_COMPLETE; adv_elem[num_elem].len = 16; adv_elem[num_elem].p_data = gobleuuid; num_elem++; /* Set Raw Advertisement Data */ wiced_bt_ble_set_raw_advertisement_data(num_elem, adv_elem); }
The Bluetooth Management Event Handler needs to take actions when the stack turns on, or one of the pairing events occur.
/* Bluetooth Management Event Handler */ wiced_bt_dev_status_t goble_management_callback( wiced_bt_management_evt_t event, wiced_bt_management_evt_data_t *p_event_data ) { wiced_bt_dev_status_t status = WICED_BT_SUCCESS; switch (event) { case BTM_ENABLED_EVT: goble_set_advertisement_data(); wiced_bt_gatt_register( goble_event_handler ); wiced_bt_gatt_db_init( gatt_database, gatt_database_len ); wiced_bt_start_advertisements(BTM_BLE_ADVERT_UNDIRECTED_HIGH, 0, NULL); break; case BTM_SECURITY_REQUEST_EVT: wiced_bt_ble_security_grant(p_event_data->security_request.bd_addr, WICED_BT_SUCCESS); break; case BTM_PAIRING_IO_CAPABILITIES_BLE_REQUEST_EVT: p_event_data->pairing_io_capabilities_ble_request.local_io_cap = BTM_IO_CAPABILITIES_NONE; p_event_data->pairing_io_capabilities_ble_request.oob_data = BTM_OOB_NONE; p_event_data->pairing_io_capabilities_ble_request.auth_req = BTM_LE_AUTH_REQ_NO_BOND; break; case BTM_USER_CONFIRMATION_REQUEST_EVT: // Just confirm wiced_bt_dev_confirm_req_reply( WICED_BT_SUCCESS , p_event_data->user_confirmation_request.bd_addr); break; case BTM_PAIRED_DEVICE_LINK_KEYS_REQUEST_EVT: WPRINT_APP_INFO(("Paired linke keys\n")); status = WICED_BT_ERROR; break; case BTM_LOCAL_IDENTITY_KEYS_REQUEST_EVT: case BTM_PAIRING_COMPLETE_EVT: case BTM_ENCRYPTION_STATUS_EVT: case BTM_BLE_ADVERT_STATE_CHANGED_EVT: case BTM_LPM_STATE_LOW_POWER: break; default: WPRINT_APP_INFO(("Unhandled Bluetooth Management Event: 0x%x (%d)\n", event, event)); break; } return status; }
The GATT Event Handler is called
- When a connection is made or terminated
- When the GoBle app writes to your GATT database. When that happens we will just printout the value that was written
/* GATT Event Handler */ wiced_bt_gatt_status_t goble_event_handler( wiced_bt_gatt_evt_t event, wiced_bt_gatt_event_data_t *p_event_data ) { wiced_bt_gatt_status_t status = WICED_BT_GATT_ERROR; wiced_bt_gatt_attribute_request_t *p_attr_req = NULL; switch ( event ) { case GATT_CONNECTION_STATUS_EVT: if(!p_event_data->connection_status.connected) { WPRINT_APP_INFO(("Disconnected\n")); wiced_bt_start_advertisements(BTM_BLE_ADVERT_UNDIRECTED_HIGH, 0, NULL); } else WPRINT_APP_INFO(("Connected\n")); break; case GATT_ATTRIBUTE_REQUEST_EVT: p_attr_req = &p_event_data->attribute_request; if( p_attr_req->request_type == GATTS_REQ_TYPE_WRITE && p_attr_req->data.handle == HDLC_GOBLE_SERIALPORTID_VALUE) { uint32_t numButtons = p_attr_req->data.write_req.p_val[3]; uint32_t sliderY = p_attr_req->data.write_req.p_val[5+numButtons]; uint32_t sliderX = p_attr_req->data.write_req.p_val[6+numButtons]; uint32_t buttonMask = 0x00; for(int i=0;i<numButtons;i++) { buttonMask |= (1<<p_attr_req->data.write_req.p_val[5+i]); } WPRINT_APP_INFO(("# Buttons = %d ButtonMask=%02X Slider x=%02X Slider Y=%02X Raw=",(int)numButtons,(unsigned int)buttonMask,(unsigned int)sliderX,(unsigned int)sliderY)); for(int i=0;i<p_attr_req->data.write_req.val_len;i++) { WPRINT_APP_INFO(("%02X ",p_attr_req->data.write_req.p_val[i])); } WPRINT_APP_INFO(("\n")); status = WICED_BT_GATT_SUCCESS; } break; default: status = WICED_BT_GATT_SUCCESS; break; } return status; }
Create GoBleThread.h
#pragma once extern void GoBleThread_start(void);
Create GoBle.c to startup the GoBleThread
#include "GoBleThread.h" #include "wiced.h" /******************************************************************* * Function Definitions ******************************************************************/ void application_start(void) { wiced_init(); GoBleThread_start(); }
2 Comments
Hello,
I’ve made simmilar project on PSOC 4 BLE based on your settings.
I can connect to the PSoC 4 device and send data from CySmart:
https://imgur.com/z0Hz9g0
Infromation from CySmart :
https://imgur.com/a/P8JotMi
On iPhone I can see my device via CySmart but GoBle doesn’t see it.
P.S. It would be nice to have possibility for attaching pictures to this form.
That should work…though I am not exactly sure to how to have a GATT only (no gattdb) on P4