mirror of
https://github.com/liquidraver/ZephCore.git
synced 2026-10-15 19:51:14 +00:00
113 lines
4.1 KiB
C++
113 lines
4.1 KiB
C++
/*
|
|
* SPDX-License-Identifier: MIT
|
|
* ZephCore BLE - legacy Nordic/Adafruit buttonless DFU service
|
|
*
|
|
* Split out of ZephyrBLE.cpp. The service symbol name keeps the GATT handle
|
|
* order (see below); the jump goes through zephcore_ble_dfu_request().
|
|
*/
|
|
|
|
#include <zephyr/kernel.h>
|
|
#include <zephyr/sys/util.h>
|
|
#include <zephyr/logging/log.h>
|
|
LOG_MODULE_DECLARE(zephcore_ble, CONFIG_ZEPHCORE_BLE_LOG_LEVEL);
|
|
|
|
#include <zephyr/bluetooth/bluetooth.h>
|
|
#include <zephyr/bluetooth/conn.h>
|
|
#include <zephyr/bluetooth/gatt.h>
|
|
#include <zephyr/bluetooth/uuid.h>
|
|
#include <zephyr/settings/settings.h>
|
|
#include <zephyr/sys/byteorder.h>
|
|
#include <string.h>
|
|
|
|
#include "ble_internal.h"
|
|
|
|
/* ========== Legacy Nordic/Adafruit buttonless DFU service ==========
|
|
* As Adafruit BLEDfu: a paired phone writes 0x01 to the control point and the
|
|
* node resets into the bootloader's BLE OTA mode (GPREGRET 0xA8). All three
|
|
* characteristics are present because iOS requires them; Packet is a no-op.
|
|
*
|
|
* The service symbol must sort after secure_nus_svc (static services are
|
|
* registered in symbol order), or the NUS handles shift under bonded phones. */
|
|
static struct bt_uuid_128 dfu_svc_uuid = BT_UUID_INIT_128(
|
|
BT_UUID_128_ENCODE(0x00001530, 0x1212, 0xefde, 0x1523, 0x785feabcd123));
|
|
static struct bt_uuid_128 dfu_ctrl_uuid = BT_UUID_INIT_128(
|
|
BT_UUID_128_ENCODE(0x00001531, 0x1212, 0xefde, 0x1523, 0x785feabcd123));
|
|
static struct bt_uuid_128 dfu_packet_uuid = BT_UUID_INIT_128(
|
|
BT_UUID_128_ENCODE(0x00001532, 0x1212, 0xefde, 0x1523, 0x785feabcd123));
|
|
static struct bt_uuid_128 dfu_revision_uuid = BT_UUID_INIT_128(
|
|
BT_UUID_128_ENCODE(0x00001534, 0x1212, 0xefde, 0x1523, 0x785feabcd123));
|
|
|
|
/* DFU Revision = 0x0001 (DFU_REV_APPMODE), little-endian — tells the DFU app
|
|
* "this is an application that supports the buttonless jump to bootloader". */
|
|
static const uint8_t dfu_revision[2] = { 0x01, 0x00 };
|
|
|
|
static void dfu_jump_work_fn(struct k_work *work);
|
|
static K_WORK_DELAYABLE_DEFINE(dfu_jump_work, dfu_jump_work_fn);
|
|
|
|
static void dfu_jump_work_fn(struct k_work *work)
|
|
{
|
|
ARG_UNUSED(work);
|
|
zephcore_ble_dfu_request(); /* sets GPREGRET + resets; never returns */
|
|
}
|
|
|
|
static ssize_t dfu_ctrl_write(struct bt_conn *conn, const struct bt_gatt_attr *attr,
|
|
const void *buf, uint16_t len, uint16_t offset, uint8_t flags)
|
|
{
|
|
ARG_UNUSED(conn);
|
|
ARG_UNUSED(attr);
|
|
ARG_UNUSED(offset);
|
|
ARG_UNUSED(flags);
|
|
/* Adafruit BLEDfu jump command: first byte 0x01 (1-2 byte write). */
|
|
if (len >= 1 && ((const uint8_t *)buf)[0] == 0x01) {
|
|
LOG_INF("buttonless DFU requested - rebooting to BLE OTA");
|
|
/* Defer so the ATT write response flushes and the DFU tool can
|
|
* arm its disconnect/rescan before we reset. */
|
|
k_work_schedule(&dfu_jump_work, K_MSEC(250));
|
|
}
|
|
return len;
|
|
}
|
|
|
|
static void dfu_ctrl_ccc_changed(const struct bt_gatt_attr *attr, uint16_t value)
|
|
{
|
|
ARG_UNUSED(attr);
|
|
ARG_UNUSED(value);
|
|
}
|
|
|
|
/* DFU Packet — present only so the DFU library's characteristic discovery
|
|
* succeeds; the actual image transfer happens in the bootloader, not here. */
|
|
static ssize_t dfu_packet_write(struct bt_conn *conn, const struct bt_gatt_attr *attr,
|
|
const void *buf, uint16_t len, uint16_t offset, uint8_t flags)
|
|
{
|
|
ARG_UNUSED(conn);
|
|
ARG_UNUSED(attr);
|
|
ARG_UNUSED(buf);
|
|
ARG_UNUSED(offset);
|
|
ARG_UNUSED(flags);
|
|
return len; /* no-op in app mode */
|
|
}
|
|
|
|
static ssize_t dfu_revision_read(struct bt_conn *conn, const struct bt_gatt_attr *attr,
|
|
void *buf, uint16_t len, uint16_t offset)
|
|
{
|
|
return bt_gatt_attr_read(conn, attr, buf, len, offset,
|
|
dfu_revision, sizeof(dfu_revision));
|
|
}
|
|
|
|
BT_GATT_SERVICE_DEFINE(secure_nus_svc_dfu,
|
|
BT_GATT_PRIMARY_SERVICE(&dfu_svc_uuid),
|
|
BT_GATT_CHARACTERISTIC(&dfu_ctrl_uuid.uuid,
|
|
BT_GATT_CHRC_WRITE | BT_GATT_CHRC_NOTIFY,
|
|
BT_GATT_PERM_WRITE_AUTHEN,
|
|
NULL, dfu_ctrl_write, NULL),
|
|
BT_GATT_CCC(dfu_ctrl_ccc_changed,
|
|
BT_GATT_PERM_READ_AUTHEN | BT_GATT_PERM_WRITE_AUTHEN),
|
|
BT_GATT_CHARACTERISTIC(&dfu_packet_uuid.uuid,
|
|
BT_GATT_CHRC_WRITE_WITHOUT_RESP,
|
|
BT_GATT_PERM_WRITE_AUTHEN,
|
|
NULL, dfu_packet_write, NULL),
|
|
BT_GATT_CHARACTERISTIC(&dfu_revision_uuid.uuid,
|
|
BT_GATT_CHRC_READ,
|
|
BT_GATT_PERM_READ_AUTHEN,
|
|
dfu_revision_read, NULL, NULL),
|
|
);
|