From 380de177e7204d5b3ed665572c81b81ed635a742 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20J=C3=B6rdens?= <rj@quartiq.de>
Date: Thu, 5 Mar 2020 17:55:27 +0000
Subject: [PATCH] rtio: fix wide output after RTIO refactoring

fixes 3d0c3cc1cf84a1b6688afa4b41ba0c7789717915
---
 artiq/firmware/ksupport/rtio.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/artiq/firmware/ksupport/rtio.rs b/artiq/firmware/ksupport/rtio.rs
index fc64f554b..5ce17850f 100644
--- a/artiq/firmware/ksupport/rtio.rs
+++ b/artiq/firmware/ksupport/rtio.rs
@@ -91,7 +91,7 @@ mod imp {
         unsafe {
             csr::rtio::target_write(target as u32);
             // writing target clears o_data
-            for i in 0..data.len() {
+            for i in (0..data.len()).rev() {
                 rtio_o_data_write(i, data[i] as _)
             }
             let status = csr::rtio::o_status_read();