20 lines
393 B
C
20 lines
393 B
C
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#include <stdint.h>
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#include "tusb.h"
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static uint8_t get_unique_id(uint16_t *desc_str)
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{
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const uint32_t *idpnt = (uint32_t*)(0x1FFFF7AC); /*DEVICE_ID1*/
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uint32_t tmp = 0;
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uint8_t chr_count = 0;
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for (int digit = 0; digit < 24; digit++)
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{
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if (0 == (digit & 7)) tmp = *idpnt++;
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desc_str[chr_count++] = "0123456789ABCDEF"[tmp & 0xf];
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tmp >>= 4;
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}
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return chr_count;
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}
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