Some initial BEL HoG support.

src/ble.c

@@ -0,0 +1,136 @@
+
+#include <settings/settings.h>
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/conn.h>
+#include <bluetooth/hci.h>
+#include <bluetooth/uuid.h>
+#include <bluetooth/gatt.h>
+
+static void connected(struct bt_conn *conn, u8_t err)
+{
+    char addr[BT_ADDR_LE_STR_LEN];
+
+    bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
+
+    if (err)
+    {
+        printk("Failed to connect to %s (%u)\n", addr, err);
+        return;
+    }
+
+    printk("Connected %s\n", addr);
+
+    // if (bt_conn_set_security(conn, BT_SECURITY_L0))
+    // {
+    //     printk("Failed to set security\n");
+    // }
+}
+
+static void disconnected(struct bt_conn *conn, u8_t reason)
+{
+    char addr[BT_ADDR_LE_STR_LEN];
+
+    bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
+
+    printk("Disconnected from %s (reason 0x%02x)\n", addr, reason);
+}
+
+static void security_changed(struct bt_conn *conn, bt_security_t level,
+                             enum bt_security_err err)
+{
+    char addr[BT_ADDR_LE_STR_LEN];
+
+    bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
+
+    if (!err)
+    {
+        printk("Security changed: %s level %u\n", addr, level);
+    }
+    else
+    {
+        printk("Security failed: %s level %u err %d\n", addr, level,
+               err);
+    }
+}
+
+static struct bt_conn_cb conn_callbacks = {
+    .connected = connected,
+    .disconnected = disconnected,
+    .security_changed = security_changed,
+};
+
+static void auth_passkey_display(struct bt_conn *conn, unsigned int passkey)
+{
+    char addr[BT_ADDR_LE_STR_LEN];
+
+    bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
+
+    printk("Passkey for %s: %06u\n", addr, passkey);
+}
+
+static void auth_cancel(struct bt_conn *conn)
+{
+    char addr[BT_ADDR_LE_STR_LEN];
+
+    bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
+
+    printk("Pairing cancelled: %s\n", addr);
+}
+
+static struct bt_conn_auth_cb zmk_ble_auth_cb_display = {
+    .passkey_display = auth_passkey_display,
+    .passkey_entry = NULL,
+    .cancel = auth_cancel,
+};
+
+static const struct bt_data zmk_ble_ad[] = {
+    BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)),
+    BT_DATA_BYTES(BT_DATA_UUID16_ALL,
+                  0x12, 0x18,  /* HID Service */
+                  0x0f, 0x18), /* Battery Service */
+};
+
+static void zmk_ble_ready(int err)
+{
+    if (err)
+    {
+        printk("Bluetooth init failed (err %d)\n", err);
+        return;
+    }
+
+    printk("Bluetooth initialized\n");
+
+    err = bt_le_adv_start(BT_LE_ADV_CONN_NAME, zmk_ble_ad, ARRAY_SIZE(zmk_ble_ad), NULL, 0);
+    if (err)
+    {
+        printk("Advertising failed to start (err %d)\n", err);
+        return;
+    }
+}
+
+int zmk_ble_init()
+{
+    if (IS_ENABLED(CONFIG_SETTINGS))
+    {
+        settings_load();
+    }
+    int err = bt_enable(zmk_ble_ready);
+
+    if (err)
+    {
+        printk("BLUETOOTH FAILED");
+        return err;
+    }
+
+    // err = bt_passkey_set(1234);
+    if (err)
+    {
+        printk("Set passkey failed: %d\n", err);
+        return err;
+    }
+
+    bt_conn_cb_register(&conn_callbacks);
+    bt_conn_auth_cb_register(&zmk_ble_auth_cb_display);
+
+    return 0;
+}