| /* log.c - logging helpers */ |
| |
| /* |
| * Copyright (c) 2016 Intel Corporation |
| * |
| * Licensed 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. |
| */ |
| |
| /* Helper for printk parameters to convert from binary to hex. |
| * We declare multiple buffers so the helper can be used multiple times |
| * in a single printk call. |
| */ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <zephyr.h> |
| #include <misc/util.h> |
| |
| #include <bluetooth/log.h> |
| |
| const char *bt_hex(const void *buf, size_t len) |
| { |
| static const char hex[] = "0123456789abcdef"; |
| static char hexbufs[4][129]; |
| static uint8_t curbuf; |
| const uint8_t *b = buf; |
| unsigned int mask; |
| char *str; |
| int i; |
| |
| mask = irq_lock(); |
| str = hexbufs[curbuf++]; |
| curbuf %= ARRAY_SIZE(hexbufs); |
| irq_unlock(mask); |
| |
| len = min(len, (sizeof(hexbufs[0]) - 1) / 2); |
| |
| for (i = 0; i < len; i++) { |
| str[i * 2] = hex[b[i] >> 4]; |
| str[i * 2 + 1] = hex[b[i] & 0xf]; |
| } |
| |
| str[i * 2] = '\0'; |
| |
| return str; |
| } |