/*
|
* 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 <stdio.h>
|
#include <string.h>
|
#include <stdlib.h>
|
|
#include "sysinit/sysinit.h"
|
#include "host/ble_hs.h"
|
#include "host/ble_uuid.h"
|
#include "bleuart/bleuart.h"
|
#include "os/endian.h"
|
#include "console/console.h"
|
|
/* ble uart attr read handle */
|
uint16_t g_bleuart_attr_read_handle;
|
|
/* ble uart attr write handle */
|
uint16_t g_bleuart_attr_write_handle;
|
|
/* Pointer to a console buffer */
|
char *console_buf;
|
|
uint16_t g_console_conn_handle;
|
/**
|
* The vendor specific "bleuart" service consists of one write no-rsp characteristic
|
* and one notification only read charateristic
|
* o "write no-rsp": a single-byte characteristic that can be written only
|
* over a non-encrypted connection
|
* o "read": a single-byte characteristic that can always be read only via
|
* notifications
|
*/
|
|
/* {6E400001-B5A3-F393-E0A9-E50E24DCCA9E} */
|
const ble_uuid128_t gatt_svr_svc_uart_uuid =
|
BLE_UUID128_INIT(0x9e, 0xca, 0xdc, 0x24, 0x0e, 0xe5, 0xa9, 0xe0,
|
0x93, 0xf3, 0xa3, 0xb5, 0x01, 0x00, 0x40, 0x6e);
|
|
/* {6E400002-B5A3-F393-E0A9-E50E24DCCA9E} */
|
const ble_uuid128_t gatt_svr_chr_uart_write_uuid =
|
BLE_UUID128_INIT(0x9e, 0xca, 0xdc, 0x24, 0x0e, 0xe5, 0xa9, 0xe0,
|
0x93, 0xf3, 0xa3, 0xb5, 0x02, 0x00, 0x40, 0x6e);
|
|
|
/* {6E400003-B5A3-F393-E0A9-E50E24DCCA9E} */
|
const ble_uuid128_t gatt_svr_chr_uart_read_uuid =
|
BLE_UUID128_INIT(0x9e, 0xca, 0xdc, 0x24, 0x0e, 0xe5, 0xa9, 0xe0,
|
0x93, 0xf3, 0xa3, 0xb5, 0x03, 0x00, 0x40, 0x6e);
|
|
static int
|
gatt_svr_chr_access_uart_write(uint16_t conn_handle, uint16_t attr_handle,
|
struct ble_gatt_access_ctxt *ctxt, void *arg);
|
|
static const struct ble_gatt_svc_def gatt_svr_svcs[] = {
|
{
|
/* Service: uart */
|
.type = BLE_GATT_SVC_TYPE_PRIMARY,
|
.uuid = &gatt_svr_svc_uart_uuid.u,
|
.characteristics = (struct ble_gatt_chr_def[]) { {
|
.uuid = &gatt_svr_chr_uart_read_uuid.u,
|
.val_handle = &g_bleuart_attr_read_handle,
|
.access_cb = gatt_svr_chr_access_uart_write,
|
.flags = BLE_GATT_CHR_F_NOTIFY,
|
}, {
|
/* Characteristic: Write */
|
.uuid = &gatt_svr_chr_uart_write_uuid.u,
|
.access_cb = gatt_svr_chr_access_uart_write,
|
.flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_WRITE_NO_RSP,
|
.val_handle = &g_bleuart_attr_write_handle,
|
}, {
|
0, /* No more characteristics in this service */
|
} },
|
},
|
|
{
|
0, /* No more services */
|
},
|
};
|
|
static int
|
gatt_svr_chr_access_uart_write(uint16_t conn_handle, uint16_t attr_handle,
|
struct ble_gatt_access_ctxt *ctxt, void *arg)
|
{
|
struct os_mbuf *om = ctxt->om;
|
switch (ctxt->op) {
|
case BLE_GATT_ACCESS_OP_WRITE_CHR:
|
while(om) {
|
console_write((char *)om->om_data, om->om_len);
|
om = SLIST_NEXT(om, om_next);
|
}
|
console_write("\n", 1);
|
return 0;
|
default:
|
assert(0);
|
return BLE_ATT_ERR_UNLIKELY;
|
}
|
}
|
|
/**
|
* bleuart GATT server initialization
|
*
|
* @param eventq
|
* @return 0 on success; non-zero on failure
|
*/
|
int
|
bleuart_gatt_svr_init(void)
|
{
|
int rc;
|
|
rc = ble_gatts_count_cfg(gatt_svr_svcs);
|
if (rc != 0) {
|
goto err;
|
}
|
|
rc = ble_gatts_add_svcs(gatt_svr_svcs);
|
if (rc != 0) {
|
return rc;
|
}
|
|
err:
|
return rc;
|
}
|
|
/**
|
* Reads console and sends data over BLE
|
*/
|
static void
|
bleuart_uart_read(void)
|
{
|
int rc;
|
int off;
|
int full_line;
|
struct os_mbuf *om;
|
|
off = 0;
|
while (1) {
|
rc = console_read(console_buf + off,
|
MYNEWT_VAL(BLEUART_MAX_INPUT) - off, &full_line);
|
if (rc <= 0 && !full_line) {
|
continue;
|
}
|
off += rc;
|
if (!full_line) {
|
continue;
|
}
|
|
om = ble_hs_mbuf_from_flat(console_buf, off);
|
if (!om) {
|
return;
|
}
|
ble_gatts_notify_custom(g_console_conn_handle,
|
g_bleuart_attr_read_handle, om);
|
off = 0;
|
break;
|
}
|
}
|
|
/**
|
* Sets the global connection handle
|
*
|
* @param connection handle
|
*/
|
void
|
bleuart_set_conn_handle(uint16_t conn_handle) {
|
g_console_conn_handle = conn_handle;
|
}
|
|
/**
|
* BLEuart console initialization
|
*
|
* @param Maximum input
|
*/
|
void
|
bleuart_init(void)
|
{
|
int rc;
|
|
/* Ensure this function only gets called by sysinit. */
|
SYSINIT_ASSERT_ACTIVE();
|
|
rc = console_init(bleuart_uart_read);
|
SYSINIT_PANIC_ASSERT(rc == 0);
|
|
console_buf = malloc(MYNEWT_VAL(BLEUART_MAX_INPUT));
|
SYSINIT_PANIC_ASSERT(console_buf != NULL);
|
}
|
