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stm32/serialno: Fixed a small regression that made it in with #1041 resulting in a transposition of alpha characters in serial numbers

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dragonmux 2022-06-25 17:19:53 -04:00 committed by Piotr Esden-Tempski
parent 2673e34ddd
commit 4a0e373b49
1 changed files with 2 additions and 2 deletions
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4
src/platforms/stm32/serialno.c
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@ -30,7 +30,7 @@ char *serial_no_read(char *s)
s[7U - i] = ((unique_id >> (i * 4U)) & 0x0FU) + '0'; s[7U - i] = ((unique_id >> (i * 4U)) & 0x0FU) + '0';
/* If the character is something above 9, then add the offset to make it ASCII A-F */ /* If the character is something above 9, then add the offset to make it ASCII A-F */
if (s[7U - i] > '9') if (s[7U - i] > '9')
s[7U - i] += 16; /* 'A' - '9' = 17, less 1 gives 16. */ s[7U - i] += 7; /* 'A' - '9' = 8, less 1 gives 7. */
} }
#elif DFU_SERIAL_LENGTH == 13 #elif DFU_SERIAL_LENGTH == 13
/* Use the same serial number as the ST DFU Bootloader.*/ /* Use the same serial number as the ST DFU Bootloader.*/
@ -53,7 +53,7 @@ char *serial_no_read(char *s)
/* If the character is something above 9, then add the offset to make it ASCII A-F */ /* If the character is something above 9, then add the offset to make it ASCII A-F */
if (s[chunk + (7U - nibble)] > '9') if (s[chunk + (7U - nibble)] > '9')
s[chunk + (7U - nibble)] += 16; /* 'A' - '9' = 17, less 1 gives 16. */ s[chunk + (7U - nibble)] += 7; /* 'A' - '9' = 8, less 1 gives 7. */
} }
#else #else
# WARNING "Unhandled DFU_SERIAL_LENGTH" # WARNING "Unhandled DFU_SERIAL_LENGTH"