106 lines
1.7 KiB
C
106 lines
1.7 KiB
C
#include "util.h"
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#include <ctype.h>
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float Bytes2Float (char * data)
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{
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Float ff ;
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ff.byte[0] = data[1];
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ff.byte[1] = data[0];
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ff.byte[2] = data[3];
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ff.byte[3] = data[2];
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return ff.data;
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}
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uint32_t Bytes2Int (char * data)
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{
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Int I;
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I.byte[0] = data[1];
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I.byte[1] = data[0];
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I.byte[2] = data[3];
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I.byte[3] = data[2];
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return I.data;
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}
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int16_t Bytes2Int16 (char * data)
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{
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Int16Tobyte int16_byte;
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int16_byte.byte[0] = data[1];
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int16_byte.byte[1] = data[0];
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return int16_byte.value;
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}
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// -----------------------------------------------------------------
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// 函数功能: hex字符串转byte数组
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// 函数名称: hexbyte_to_hex_str
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// 参数1 : src 源字符串
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// 参数2 : obj 目标字节数组
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// 说明 : "01020304" --> {0x01,0x03,0x03,x04} 或 "01 02 03 04"->{0x01,0x03,0x03,x04}
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// 返回值 : 1 成功
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// -----------------------------------------------------------------
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int hexstr_to_hexbyte (char *src, char *obj, uint16_t length)
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{
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char h1, h2;
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uint8_t s1, s2;
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int i;
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length = length / 2;
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for (i = 0; i < length; i++)
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{
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h1 = src[2 * i];
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h2 = src[2 * i + 1];
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s1 = toupper (h1) - 0x30;
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if (s1 > 9)
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s1 -= 7;
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s2 = toupper (h2) - 0x30;
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if (s2 > 9)
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s2 -= 7;
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obj[i] = s1 * 16 + s2;
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}
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return length;
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}
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// 754 转float
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float float_to_iee754 (float ff1,char * data)
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{
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Float ff;
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ff.data = ff1;
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data[0] = ff.byte[3];
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data[1] = ff.byte[2];
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data[2] = ff.byte[1];
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data[3] = ff.byte[0];
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return ff.data;
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}
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// 754 转float
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float iee754_to_float (char * data)
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{
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Float ff;
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ff.byte[3] = data[0];
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ff.byte[2] = data[1];
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ff.byte[1] = data[2];
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ff.byte[0] = data[3];
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return ff.data;
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}
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uint32_t byte_to_Inverse(char * data)
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{
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Int I;
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I.byte[0] = data[3];
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I.byte[1] = data[2];
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I.byte[2] = data[1];
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I.byte[3] = data[0];
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return I.data;
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}
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