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standardize flash uniqueID to big-endian

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Henry Gabryjelski 2023-02-18 12:16:50 -08:00
commit 229454963b
3 changed files with 34 additions and 31 deletions
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4
common_arm/usb_cdc.c
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@ -413,8 +413,8 @@ void usb_update_serial(uint64_t newSerialNumber) {
uint8_t nibble2 = (newSerialNumber >> ((8 * i) + 0)) & 0xFu; // bitmasks [0x0F, 0x0F00, 0x0F0000, ... 0x0F00000000000000]
char c1 = nibble1 < 10 ? '0' + nibble1 : 'A' + (nibble1 - 10);
char c2 = nibble2 < 10 ? '0' + nibble2 : 'A' + (nibble2 - 10);
StrSerialNumber[46 - (4 * i)] = c1; // [ 46, 42, .., 22, 18 ]
StrSerialNumber[48 - (4 * i)] = c2; // [ 48, 44, .., 24, 20 ]
StrSerialNumber[18 + (4*i) + 0] = c1; // [ 18, 22, .., 42, 46 ]
StrSerialNumber[18 + (4*i) + 2] = c2; // [ 20, 24, .., 44, 48 ]
}
StrSerialNumber[0] = USB_STRING_DESCRIPTOR_SERIAL_NUMBER_LENGTH;
}