Initial exploration of split BLE service.

* Service for split peripheral to report
  position state to split central.
* Updated advertising info.
* Behavior for split BT until we have a proper
  event system.

1 files changed, 49 insertions, 0 deletions

diff --git a/app/src/split/bluetooth/service.c b/app/src/split/bluetooth/service.c
new file mode 100644
index 0000000..a669723
--- /dev/null
+++ b/app/src/split/bluetooth/service.c
@@ -0,0 +1,49 @@
+
+#include <zephyr/types.h>
+#include <sys/util.h>
+#include <bluetooth/gatt.h>
+
+#include <zmk/matrix.h>
+#include <zmk/split/bluetooth/service.h>
+
+static u8_t num_of_positions = ZMK_KEYMAP_LEN;
+static u8_t position_state[16];
+
+static ssize_t split_svc_pos_state(struct bt_conn *conn, const struct bt_gatt_attr *attrs, void *buf, u16_t len, u16_t offset)
+{
+    return bt_gatt_attr_read(conn, attrs, buf, len, offset, &position_state, sizeof(position_state));
+}
+
+static ssize_t split_svc_num_of_positions(struct bt_conn *conn, const struct bt_gatt_attr *attrs, void *buf, u16_t len, u16_t offset)
+{
+    return bt_gatt_attr_read(conn, attrs, buf, len, offset, attrs->user_data, sizeof(u8_t));
+}
+
+static void split_svc_pos_state_ccc(const struct bt_gatt_attr *attr, u16_t value)
+{
+}
+
+
+BT_GATT_SERVICE_DEFINE(split_svc,
+                       BT_GATT_PRIMARY_SERVICE(ZMK_BT_UUID_SPLIT),
+                       BT_GATT_CHARACTERISTIC(ZMK_BT_UUID_SPLIT_POS_STATE, BT_GATT_CHRC_READ | BT_GATT_CHRC_NOTIFY,
+                                              BT_GATT_PERM_READ_ENCRYPT,
+                                              split_svc_pos_state, NULL, &position_state),
+                       BT_GATT_CCC(split_svc_pos_state_ccc,
+                                   BT_GATT_PERM_READ_ENCRYPT | BT_GATT_PERM_WRITE_ENCRYPT),
+                       BT_GATT_DESCRIPTOR(BT_UUID_NUM_OF_DIGITALS, BT_GATT_PERM_READ,
+                                          split_svc_num_of_positions, NULL, &num_of_positions),
+);
+
+int zmk_split_bt_position_pressed(u8_t position)
+{
+    WRITE_BIT(position_state[position / 8], position % 8, true);
+    return bt_gatt_notify(NULL, &split_svc.attrs[1], &position_state, sizeof(position_state));
+}
+
+int zmk_split_bt_position_released(u8_t position)
+{
+    WRITE_BIT(position_state[position / 8], position % 8, false);
+    // WRITE_BIT(position_state, position, false);
+    return bt_gatt_notify(NULL, &split_svc.attrs[1], &position_state, sizeof(position_state));
+}
\ No newline at end of file