apps/btshell: add support for sending Multiple handle Notifications

Added commands for queueing notifications to be sent using Multiple
Handle Notification, sending them and clearing pending queue.

apps/btshell/src/btshell.h

@@ -124,6 +124,12 @@ int btshell_write_long(uint16_t conn_handle, uint16_t attr_handle,
                        uint16_t offset, struct os_mbuf *om);
 int btshell_write_reliable(uint16_t conn_handle,
                            struct ble_gatt_attr *attrs, int num_attrs);
+#if MYNEWT_VAL(BLE_GATT_NOTIFY_MULTIPLE)
+int btshell_enqueue_notif(uint16_t handle, uint16_t len, uint8_t *value);
+int btshell_send_pending_notif(uint16_t conn_handle);
+int btshell_clear_pending_notif(void);
+#endif
+
 #if MYNEWT_VAL(BLE_EXT_ADV)
 int btshell_ext_adv_configure(uint8_t instance,
                               const struct ble_gap_ext_adv_params *params,

apps/btshell/src/cmd.c

@@ -3497,6 +3497,43 @@ static const struct shell_cmd_help gatt_write_help = {
     .usage = NULL,
     .params = gatt_write_params,
 };
+
+/*****************************************************************************
+ * $gatt-enqueue-notify                                                      *
+ *****************************************************************************/
+
+static const struct shell_param gatt_enqueue_notif_params[] = {
+    {"handle", "characteristic handle, usage: =<UINT16>"},
+    {"value", "usage: =<octets>"},
+    {NULL, NULL}
+};
+
+static const struct shell_cmd_help gatt_enqueue_notif_help = {
+    .summary = "enqueue notification to be sent",
+    .usage = NULL,
+    .params = gatt_enqueue_notif_params,
+};
+
+/*****************************************************************************
+ * $gatt-send-pending-notify                                                 *
+ *****************************************************************************/
+
+static const struct shell_param gatt_send_pending_notif_params[] = {
+    {"conn", "connection handle, usage: =<UINT16>"},
+    {NULL, NULL}
+};
+
+static const struct shell_cmd_help gatt_send_pending_notif_help = {
+    .summary = "send pending notifications",
+    .usage = NULL,
+    .params = gatt_send_pending_notif_params,
+};
+
+static const struct shell_cmd_help gatt_clear_pending_notif_help = {
+    .summary = "clear pending notifications",
+    .usage = NULL,
+    .params = NULL,
+};
 #endif
 
 #if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM)
@@ -4417,6 +4454,27 @@ static const struct shell_cmd btshell_commands[] = {
         .sc_cmd_func = cmd_gatt_write,
 #if MYNEWT_VAL(SHELL_CMD_HELP)
         .help = &gatt_write_help,
+#endif
+    },
+    {
+        .sc_cmd = "gatt-enqueue-notif",
+        .sc_cmd_func = cmd_gatt_enqueue_notif,
+#if MYNEWT_VAL(SHELL_CMD_HELP)
+        .help = &gatt_enqueue_notif_help,
+#endif
+    },
+    {
+        .sc_cmd = "gatt-send-queued-notif",
+        .sc_cmd_func = cmd_gatt_send_pending_notif,
+#if MYNEWT_VAL(SHELL_CMD_HELP)
+        .help = &gatt_send_pending_notif_help,
+#endif
+    },
+    {
+        .sc_cmd = "gatt-clear-queued-notif",
+        .sc_cmd_func = cmd_gatt_clear_pending_notif,
+#if MYNEWT_VAL(SHELL_CMD_HELP)
+        .help = &gatt_clear_pending_notif_help,
 #endif
     },
 #if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM)

apps/btshell/src/cmd_gatt.c

@@ -592,3 +592,75 @@ cmd_gatt_write(int argc, char **argv)
 
     return rc;
 }
+
+int
+cmd_gatt_enqueue_notif(int argc, char **argv)
+{
+#if MYNEWT_VAL(BLE_GATT_NOTIFY_MULTIPLE)
+    int rc;
+    uint16_t handle;
+    unsigned int len;
+    uint8_t value[BLE_ATT_ATTR_MAX_LEN];
+
+    rc = parse_arg_init(argc - 1, argv + 1);
+    if (rc != 0) {
+        return rc;
+    }
+
+    handle = parse_arg_uint16("handle", &rc);
+    if (rc != 0) {
+        console_printf("invalid 'handle' parameter\n");
+        return rc;
+    }
+
+    if (argc > 1) {
+        rc = parse_arg_byte_stream("value", BLE_ATT_ATTR_MAX_LEN, value, &len);
+        if (rc != 0) {
+            console_printf("invalid 'value' parameter\n");
+            return rc;
+        }
+        return btshell_enqueue_notif(handle, len, value);
+    } else {
+        return btshell_enqueue_notif(handle, 0, NULL);
+    }
+#else
+    console_printf("To enable this features set BLE_GATT_NOTIFY_MULTIPLE\n");
+    return ENOTSUP;
+#endif
+}
+
+int
+cmd_gatt_send_pending_notif(int argc, char **argv)
+{
+#if MYNEWT_VAL(BLE_GATT_NOTIFY_MULTIPLE)
+    uint16_t conn_handle;
+    int rc;
+
+    rc = parse_arg_init(argc - 1, argv + 1);
+    if (rc != 0) {
+        return rc;
+    }
+
+    conn_handle = parse_arg_uint16("conn", &rc);
+    if (rc != 0) {
+        console_printf("invalid 'conn' parameter\n");
+        return rc;
+    }
+
+    return btshell_send_pending_notif(conn_handle);
+#else
+    console_printf("To enable this features set BLE_GATT_NOTIFY_MULTIPLE\n");
+    return ENOTSUP;
+#endif
+}
+
+int
+cmd_gatt_clear_pending_notif(int argc, char **argv)
+{
+#if MYNEWT_VAL(BLE_GATT_NOTIFY_MULTIPLE)
+    return btshell_clear_pending_notif();
+#else
+    console_printf("To enable this features set BLE_GATT_NOTIFY_MULTIPLE\n");
+    return ENOTSUP;
+#endif
+}

apps/btshell/src/cmd_gatt.h

@@ -35,5 +35,8 @@ int cmd_gatt_service_visibility(int argc, char **argv);
 int cmd_gatt_show(int argc, char **argv);
 int cmd_gatt_show_local(int argc, char **argv);
 int cmd_gatt_write(int argc, char **argv);
+int cmd_gatt_enqueue_notif(int argc, char **argv);
+int cmd_gatt_send_pending_notif(int argc, char **argv);
+int cmd_gatt_clear_pending_notif(int argc, char **argv);
 
 #endif

apps/btshell/src/main.c

@@ -107,6 +107,9 @@ struct os_mbuf_pool sdu_os_mbuf_pool;
 static struct os_mempool sdu_coc_mbuf_mempool;
 #endif
 
+static struct ble_gatt_notif pending_notif[BTSHELL_MAX_CHRS];
+static uint16_t pending_notif_cnt;
+
 static struct os_callout btshell_tx_timer;
 struct btshell_tx_data_s
 {
@@ -1761,6 +1764,79 @@ btshell_write_reliable(uint16_t conn_handle,
     return rc;
 }
 
+#if MYNEWT_VAL(BLE_GATT_NOTIFY_MULTIPLE)
+int
+btshell_enqueue_notif(uint16_t handle, uint16_t len, uint8_t *value)
+{
+    struct ble_gatt_notif *notify = NULL;
+    struct os_mbuf *val_ptr;
+    int i;
+
+    for (i = 0; i < BTSHELL_MAX_CHRS; i++) {
+        if (pending_notif[i].handle == 0) {
+            notify = &pending_notif[i];
+            break;
+        }
+    }
+
+    if (notify == NULL) {
+        return ENOMEM;
+    }
+
+    notify->handle = handle;
+    if (value != NULL) {
+        notify->value = os_msys_get(0, 0);
+
+        val_ptr = os_mbuf_extend(notify->value, len);
+        if (val_ptr == NULL) {
+            return ENOMEM;
+        }
+        memcpy(val_ptr, value, len);
+    }
+
+    pending_notif_cnt++;
+
+    return 0;
+}
+
+int
+btshell_send_pending_notif(uint16_t conn_handle)
+{
+    int rc = 0;
+    int i;
+
+    if (pending_notif_cnt == 0) {
+        return EALREADY;
+    }
+
+    rc = ble_gatts_notify_multiple_custom(conn_handle, pending_notif_cnt,
+                                            pending_notif);
+    for (i = 0; i < pending_notif_cnt; i++) {
+        pending_notif[i].handle = 0;
+        pending_notif[i].value = NULL;
+    }
+
+    pending_notif_cnt = 0;
+
+    return rc;
+}
+
+int
+btshell_clear_pending_notif(void)
+{
+    int i;
+
+    for (i = 0; i < pending_notif_cnt; i++) {
+        pending_notif[i].handle = 0;
+        pending_notif[i].value = NULL;
+    }
+
+    pending_notif_cnt = 0;
+
+    return 0;
+}
+#endif
+
 #if MYNEWT_VAL(BLE_EXT_ADV)
 int
 btshell_ext_adv_configure(uint8_t instance,