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19 lines
431 B
19 lines
431 B
3 years ago
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/* See LICENSE of license details. */
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#include <stdint.h>
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#include <unistd.h>
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void write_hex(int fd, unsigned long int hex)
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{
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uint8_t ii;
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uint8_t jj;
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char towrite;
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write(fd , "0x", 2);
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for (ii = sizeof(unsigned long int) * 2 ; ii > 0; ii--) {
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jj = ii - 1;
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uint8_t digit = ((hex & (0xF << (jj*4))) >> (jj*4));
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towrite = digit < 0xA ? ('0' + digit) : ('A' + (digit - 0xA));
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write(fd, &towrite, 1);
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}
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}
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