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/*
* Copyright (c) 2020 The ZMK Contributors
*
* SPDX-License-Identifier: MIT
*/
#include <settings/settings.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/gatt.h>
#include <zmk/ble.h>
#include <zmk/hog.h>
#include <zmk/hid.h>
enum
{
HIDS_REMOTE_WAKE = BIT(0),
HIDS_NORMALLY_CONNECTABLE = BIT(1),
};
struct hids_info
{
u16_t version; /* version number of base USB HID Specification */
u8_t code; /* country HID Device hardware is localized for. */
u8_t flags;
} __packed;
struct hids_report
{
u8_t id; /* report id */
u8_t type; /* report type */
} __packed;
static struct hids_info info = {
.version = 0x0000,
.code = 0x00,
.flags = HIDS_NORMALLY_CONNECTABLE & HIDS_REMOTE_WAKE,
};
enum
{
HIDS_INPUT = 0x01,
HIDS_OUTPUT = 0x02,
HIDS_FEATURE = 0x03,
};
static struct hids_report input = {
.id = 0x01,
.type = HIDS_INPUT,
};
static struct hids_report consumer_input = {
.id = 0x02,
.type = HIDS_INPUT,
};
static bool host_requests_notification = false;
static u8_t ctrl_point;
// static u8_t proto_mode;
static ssize_t read_hids_info(struct bt_conn *conn, const struct bt_gatt_attr *attr, void *buf, u16_t len, u16_t offset)
{
return bt_gatt_attr_read(conn, attr, buf, len, offset, attr->user_data, sizeof(struct hids_info));
}
static ssize_t read_hids_report_ref(struct bt_conn *conn, const struct bt_gatt_attr *attr, void *buf, u16_t len, u16_t offset)
{
return bt_gatt_attr_read(conn, attr, buf, len, offset, attr->user_data, sizeof(struct hids_report));
}
static ssize_t read_hids_report_map(struct bt_conn *conn, const struct bt_gatt_attr *attr, void *buf, u16_t len, u16_t offset)
{
return bt_gatt_attr_read(conn, attr, buf, len, offset, zmk_hid_report_desc, sizeof(zmk_hid_report_desc));
}
static ssize_t read_hids_input_report(struct bt_conn *conn, const struct bt_gatt_attr *attr, void *buf, u16_t len, u16_t offset)
{
struct zmk_hid_keypad_report_body *report_body = &zmk_hid_get_keypad_report()->body;
return bt_gatt_attr_read(conn, attr, buf, len, offset, report_body, sizeof(struct zmk_hid_keypad_report_body));
}
static ssize_t read_hids_consumer_input_report(struct bt_conn *conn, const struct bt_gatt_attr *attr, void *buf, u16_t len, u16_t offset)
{
struct zmk_hid_consumer_report_body *report_body = &zmk_hid_get_consumer_report()->body;
return bt_gatt_attr_read(conn, attr, buf, len, offset, report_body, sizeof(struct zmk_hid_consumer_report_body));
}
// static ssize_t write_proto_mode(struct bt_conn *conn,
// const struct bt_gatt_attr *attr,
// const void *buf, u16_t len, u16_t offset,
// u8_t flags)
// {
// printk("PROTO CHANGED\n");
// return 0;
// }
static void input_ccc_changed(const struct bt_gatt_attr *attr, u16_t value)
{
host_requests_notification = (value == BT_GATT_CCC_NOTIFY) ? 1 : 0;
}
static ssize_t write_ctrl_point(struct bt_conn *conn,
const struct bt_gatt_attr *attr,
const void *buf, u16_t len, u16_t offset,
u8_t flags)
{
u8_t *value = attr->user_data;
if (offset + len > sizeof(ctrl_point))
{
return BT_GATT_ERR(BT_ATT_ERR_INVALID_OFFSET);
}
memcpy(value + offset, buf, len);
return len;
}
/* HID Service Declaration */
BT_GATT_SERVICE_DEFINE(hog_svc,
BT_GATT_PRIMARY_SERVICE(BT_UUID_HIDS),
// BT_GATT_CHARACTERISTIC(BT_UUID_HIDS_PROTOCOL_MODE, BT_GATT_CHRC_WRITE_WITHOUT_RESP,
// BT_GATT_PERM_WRITE, NULL, write_proto_mode, &proto_mode),
BT_GATT_CHARACTERISTIC(BT_UUID_HIDS_INFO, BT_GATT_CHRC_READ,
BT_GATT_PERM_READ, read_hids_info, NULL, &info),
BT_GATT_CHARACTERISTIC(BT_UUID_HIDS_REPORT_MAP, BT_GATT_CHRC_READ,
BT_GATT_PERM_READ, read_hids_report_map, NULL, NULL),
BT_GATT_CHARACTERISTIC(BT_UUID_HIDS_REPORT,
BT_GATT_CHRC_READ | BT_GATT_CHRC_NOTIFY,
BT_GATT_PERM_READ_ENCRYPT,
read_hids_input_report, NULL, NULL),
BT_GATT_CCC(input_ccc_changed,
BT_GATT_PERM_READ_ENCRYPT | BT_GATT_PERM_WRITE_ENCRYPT),
BT_GATT_DESCRIPTOR(BT_UUID_HIDS_REPORT_REF, BT_GATT_PERM_READ,
read_hids_report_ref, NULL, &input),
BT_GATT_CHARACTERISTIC(BT_UUID_HIDS_REPORT,
BT_GATT_CHRC_READ | BT_GATT_CHRC_NOTIFY,
BT_GATT_PERM_READ_ENCRYPT,
read_hids_consumer_input_report, NULL, NULL),
BT_GATT_CCC(input_ccc_changed,
BT_GATT_PERM_READ_ENCRYPT | BT_GATT_PERM_WRITE_ENCRYPT),
BT_GATT_DESCRIPTOR(BT_UUID_HIDS_REPORT_REF, BT_GATT_PERM_READ,
read_hids_report_ref, NULL, &consumer_input),
BT_GATT_CHARACTERISTIC(BT_UUID_HIDS_CTRL_POINT,
BT_GATT_CHRC_WRITE_WITHOUT_RESP,
BT_GATT_PERM_WRITE,
NULL, write_ctrl_point, &ctrl_point));
int zmk_hog_send_keypad_report(struct zmk_hid_keypad_report_body *report)
{
return bt_gatt_notify(NULL, &hog_svc.attrs[5], report, sizeof(struct zmk_hid_keypad_report_body));
};
int zmk_hog_send_consumer_report(struct zmk_hid_consumer_report_body *report)
{
return bt_gatt_notify(NULL, &hog_svc.attrs[10], report, sizeof(struct zmk_hid_consumer_report_body));
};
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