add nimble uart

download "nimble connect" on your phone, connect to "Nimble Uart", send byte array or uint8 to the board through the app

examples/nimble_uart/main.c

@@ -0,0 +1,258 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+
+/* BLE */
+#include "nimble/ble.h"
+#include "host/ble_hs.h"
+#include "host/ble_hs_adv.h"
+#include "host/ble_uuid.h"
+#include "host/ble_att.h"
+#include "host/ble_gap.h"
+#include "host/ble_gatt.h"
+#include "host/ble_l2cap.h"
+#include "host/ble_sm.h"
+#include "controller/ble_ll.h"
+
+/* RAM HCI transport. */
+#include "transport/ram/ble_hci_ram.h"
+
+/* Mandatory services. */
+#include "services/gap/ble_svc_gap.h"
+#include "services/gatt/ble_svc_gatt.h"
+
+#include "bleuart/bleuart.h"
+
+#include "nimble/nimble_port_tencentos_tiny.h"
+
+static const char device_name[] = "Nimble Uart";
+
+static int bleuart_gap_event(struct ble_gap_event *event, void *arg);
+
+/**
+ * Enables advertising with the following parameters:
+ *     o General discoverable mode.
+ *     o Undirected connectable mode.
+ */
+static void
+bleuart_advertise(void)
+{
+    struct ble_gap_adv_params adv_params;
+    struct ble_hs_adv_fields fields;
+    int rc;
+
+    /*
+     *  Set the advertisement data included in our advertisements:
+     *     o Flags (indicates advertisement type and other general info).
+     *     o Advertising tx power.
+     *     o 128 bit UUID
+     */
+
+    memset(&fields, 0, sizeof fields);
+
+    /* Advertise two flags:
+     *     o Discoverability in forthcoming advertisement (general)
+     *     o BLE-only (BR/EDR unsupported).
+     */
+    fields.flags = BLE_HS_ADV_F_DISC_GEN |
+                   BLE_HS_ADV_F_BREDR_UNSUP;
+
+    /* Indicate that the TX power level field should be included; have the
+     * stack fill this value automatically.  This is done by assiging the
+     * special value BLE_HS_ADV_TX_PWR_LVL_AUTO.
+     */
+    fields.tx_pwr_lvl_is_present = 1;
+    fields.tx_pwr_lvl = BLE_HS_ADV_TX_PWR_LVL_AUTO;
+
+    fields.uuids128 = BLE_UUID128(&gatt_svr_svc_uart_uuid.u);
+    fields.num_uuids128 = 1;
+    fields.uuids128_is_complete = 1;
+
+    rc = ble_gap_adv_set_fields(&fields);
+    if (rc != 0) {
+        return;
+    }
+
+    memset(&fields, 0, sizeof fields);
+    fields.name = (uint8_t *)ble_svc_gap_device_name();
+    fields.name_len = strlen((char *)fields.name);
+    fields.name_is_complete = 1;
+
+    rc = ble_gap_adv_rsp_set_fields(&fields);
+    if (rc != 0) {
+        return;
+    }
+
+    /* Begin advertising. */
+    memset(&adv_params, 0, sizeof adv_params);
+    adv_params.conn_mode = BLE_GAP_CONN_MODE_UND;
+    adv_params.disc_mode = BLE_GAP_DISC_MODE_GEN;
+    rc = ble_gap_adv_start(BLE_OWN_ADDR_PUBLIC, NULL, BLE_HS_FOREVER,
+                           &adv_params, bleuart_gap_event, NULL);
+    if (rc != 0) {
+        return;
+    }
+}
+
+/**
+ * The nimble host executes this callback when a GAP event occurs.  The
+ * application associates a GAP event callback with each connection that forms.
+ * bleuart uses the same callback for all connections.
+ *
+ * @param event                 The type of event being signalled.
+ * @param ctxt                  Various information pertaining to the event.
+ * @param arg                   Application-specified argument; unuesd by
+ *                                  bleuart.
+ *
+ * @return                      0 if the application successfully handled the
+ *                                  event; nonzero on failure.  The semantics
+ *                                  of the return code is specific to the
+ *                                  particular GAP event being signalled.
+ */
+static int
+bleuart_gap_event(struct ble_gap_event *event, void *arg)
+{
+    struct ble_gap_conn_desc desc;
+    int rc;
+
+    switch (event->type) {
+    case BLE_GAP_EVENT_CONNECT:
+        /* A new connection was established or a connection attempt failed. */
+        if (event->connect.status == 0) {
+            rc = ble_gap_conn_find(event->connect.conn_handle, &desc);
+            assert(rc == 0);
+            bleuart_set_conn_handle(event->connect.conn_handle);
+        }
+
+        if (event->connect.status != 0) {
+            /* Connection failed; resume advertising. */
+            bleuart_advertise();
+        }
+        return 0;
+
+    case BLE_GAP_EVENT_DISCONNECT:
+        /* Connection terminated; resume advertising. */
+        bleuart_advertise();
+        return 0;
+
+
+    case BLE_GAP_EVENT_ADV_COMPLETE:
+        /* Advertising terminated; resume advertising. */
+        bleuart_advertise();
+        return 0;
+
+    case BLE_GAP_EVENT_REPEAT_PAIRING:
+        /* We already have a bond with the peer, but it is attempting to
+         * establish a new secure link.  This app sacrifices security for
+         * convenience: just throw away the old bond and accept the new link.
+         */
+
+        /* Delete the old bond. */
+        rc = ble_gap_conn_find(event->repeat_pairing.conn_handle, &desc);
+        assert(rc == 0);
+        ble_store_util_delete_peer(&desc.peer_id_addr);
+
+        /* Return BLE_GAP_REPEAT_PAIRING_RETRY to indicate that the host should
+         * continue with the pairing operation.
+         */
+        return BLE_GAP_REPEAT_PAIRING_RETRY;
+    }
+
+    return 0;
+}
+
+static void
+bleuart_on_sync(void)
+{
+    /* Begin advertising. */
+    bleuart_advertise();
+}
+
+static void
+put_ad(uint8_t ad_type, uint8_t ad_len, const void *ad, uint8_t *buf,
+       uint8_t *len)
+{
+    buf[(*len)++] = ad_len + 1;
+    buf[(*len)++] = ad_type;
+
+    memcpy(&buf[*len], ad, ad_len);
+
+    *len += ad_len;
+}
+
+static void
+update_ad(void)
+{
+    uint8_t ad[BLE_HS_ADV_MAX_SZ];
+    uint8_t ad_len = 0;
+    uint8_t ad_flags = BLE_HS_ADV_F_DISC_GEN | BLE_HS_ADV_F_BREDR_UNSUP;
+
+    put_ad(BLE_HS_ADV_TYPE_FLAGS, 1, &ad_flags, ad, &ad_len);
+    put_ad(BLE_HS_ADV_TYPE_COMP_NAME, sizeof(device_name), device_name, ad, &ad_len);
+
+    ble_gap_adv_set_data(ad, ad_len);
+}
+
+int ble_boot(void)
+{
+    int rc = 0;
+
+    /* Initialize the BLE host. */
+    ble_hs_cfg.sync_cb = bleuart_on_sync;
+    ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
+
+    rc = bleuart_gatt_svr_init();
+    assert(rc == 0);
+
+    /* Set the default device name */
+    rc = ble_svc_gap_device_name_set(device_name);
+    assert(rc == 0);
+
+    update_ad();
+
+    /* run an event loop for handling the heart rate update events */
+    extern void nimble_port_run(void);
+    nimble_port_tencentos_tiny_init(nimble_port_run);
+
+    return 0;
+}
+
+k_task_t ble_boot_task;
+k_stack_t ble_boot_stack[512];
+
+int main(void)
+{
+    board_init();
+
+    /* Initialize OS */
+    tos_knl_init();
+
+    nimble_port_init();
+
+    tos_task_create(&ble_boot_task, "boot", ble_boot, NULL,
+                        4,
+                        ble_boot_stack, sizeof(ble_boot_stack),
+                        0);
+    tos_knl_start();
+}
+