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drtio: fix crc32 offset address

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occheung 2021-11-22 16:53:57 +08:00 committed by Sébastien Bourdeauducq
parent 7307b30213
commit 9423428bb0
1 changed files with 4 additions and 5 deletions
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9
artiq/firmware/libboard_artiq/drtioaux.rs
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@ -137,11 +137,10 @@ pub fn send(linkno: u8, packet: &Packet) -> Result<(), Error<!>> {
packet.write_to(&mut writer)?;
let padding = 4 - (writer.position() % 4);
if padding != 4 {
for _ in 0..padding {
writer.write_u8(0)?;
}
// Pad till offset 4, insert checksum there
let padding = (12 - (writer.position() % 8)) % 8;
for _ in 0..padding {
writer.write_u8(0)?;
}
let checksum = crc::crc32::checksum_ieee(&writer.get_ref()[0..writer.position()]);