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launchpad-icdi: Fixed up and rewritten the serial number code to match what was done in #1041

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dragonmux 2022-06-15 21:59:03 -04:00 committed by Piotr Esden-Tempski
parent c271c5c979
commit 9b53fbf6ea
1 changed files with 6 additions and 9 deletions
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15
src/platforms/launchpad-icdi/platform.c
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@ -121,17 +121,14 @@ char *serial_no_read(char *s)
{
/* FIXME: Store a unique serial number somewhere and retreive here */
uint32_t unique_id = SERIAL_NO;
int i;
/* Fetch serial number from chip's unique ID */
for(i = 0; i < 8; i++) {
s[7-i] = ((unique_id >> (4*i)) & 0xF) + '0';
}
for(i = 0; i < DFU_SERIAL_LENGTH - 1; i++)
if(s[i] > '9')
s[i] += 'A' - '9' - 1;
/* Fetch serial number from chip's unique ID */
for (size_t i = 0; i < DFU_SERIAL_LENGTH - 1; i++) {
s[7U - i] = ((unique_id >> (4 * i)) & 0x0FU) + '0';
if (s[7U - i] > '9')
s[7U - i] += 7; /* 'A' - '9' = 8, less 1 gives 7. */
}
s[DFU_SERIAL_LENGTH - 1] = 0;
return s;
}