57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
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/* log.c - logging helpers */
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/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* Helper for printk parameters to convert from binary to hex.
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* We declare multiple buffers so the helper can be used multiple times
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* in a single printk call.
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*/
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#include <stddef.h>
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#include <stdint.h>
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#include <nanokernel.h>
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#include <misc/util.h>
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#include <bluetooth/log.h>
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const char *bt_hex(const void *buf, size_t len)
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{
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static const char hex[] = "0123456789abcdef";
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static char hexbufs[4][129];
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static uint8_t curbuf;
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const uint8_t *b = buf;
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unsigned int mask;
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char *str;
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int i;
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mask = irq_lock();
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str = hexbufs[curbuf++];
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curbuf %= ARRAY_SIZE(hexbufs);
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irq_unlock(mask);
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len = min(len, (sizeof(hexbufs[0]) - 1) / 2);
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for (i = 0; i < len; i++) {
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str[i * 2] = hex[b[i] >> 4];
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str[i * 2 + 1] = hex[b[i] & 0xf];
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}
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str[i * 2] = '\0';
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return str;
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}
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