98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
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/**************************************************************************************
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Filename: ir_utils.c
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Revised: Date: 2016-10-26
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Revision: Revision: 1.0
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Description: This file provides generic utils for IRDA algorithms
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Revision log:
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* 2016-10-01: created by strawmanbobi
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**************************************************************************************/
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#include "include/ir_utils.h"
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UINT8 char_to_hex(char chr)
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{
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UINT8 value = 0;
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if (chr >= '0' && chr <= '9')
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value = (UINT8) (chr - '0');
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if (chr >= 'a' && chr <= 'f')
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value = (UINT8) (chr - 'a' + 10);
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if (chr >= 'A' && chr <= 'F')
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value = (UINT8) (chr - 'A' + 10);
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return value;
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}
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UINT8 chars_to_hex(const UINT8 *p)
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{
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return ((UINT8) char_to_hex(*p) << (UINT8) 4) + char_to_hex(*(p + 1));
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}
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void string_to_hex_common(UINT8 *p, UINT8 *hex_data, UINT16 len)
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{
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// in condition of hex_code is already assigned
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UINT16 i = 0;
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for (i = 0; i < len; i++)
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{
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hex_data[i] = chars_to_hex(p);
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p = p + 2;
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}
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}
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void string_to_hex(UINT8 *p, t_ac_hex *pac_hex)
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{
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UINT8 i = 0;
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pac_hex->len = chars_to_hex(p);
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p = p + 2;
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for (i = 0; i < pac_hex->len; i++)
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{
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pac_hex->data[i] = chars_to_hex(p);
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p = p + 2;
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}
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}
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char hex_half_byte_to_single_char(UINT8 length, UINT8 half_byte)
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{
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if (1 != length || half_byte >= 16)
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{
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return '0';
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}
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if (half_byte >= 10 && half_byte < 16)
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{
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return (char) (half_byte - 10 + 0x41);
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}
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else
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{
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return (char) (half_byte + 0x30);
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}
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}
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void hex_byte_to_double_char(char *dest, UINT8 length, UINT8 src)
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{
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UINT8 hi_num = 0;
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UINT8 lo_num = 0;
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if (NULL == dest || 2 != length)
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{
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return;
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}
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hi_num = (UINT8) ((UINT8) (src >> (UINT8) 4) & (UINT8) 0x0F);
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lo_num = (UINT8) (src & (UINT8) 0x0F);
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dest[0] = hex_half_byte_to_single_char(1, hi_num);
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dest[1] = hex_half_byte_to_single_char(1, lo_num);
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}
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BOOL is_in(const UINT8 *array, UINT8 value, UINT8 len)
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{
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UINT16 i = 0;
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for (i = 0; i < len; i++)
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{
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if (array[i] == value)
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{
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return TRUE;
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}
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}
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return FALSE;
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}
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