From 00260de8bb38bccf9896e113cd19abb54866d111 Mon Sep 17 00:00:00 2001
From: schneider <schneider@blinkenlichts.net>
Date: Sun, 28 Nov 2021 22:36:24 +0100
Subject: [PATCH] mp: Correctly mask interrupts
---
pycardium/mphalport.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/pycardium/mphalport.c b/pycardium/mphalport.c
index a45a8776..f8370ff1 100644
--- a/pycardium/mphalport.c
+++ b/pycardium/mphalport.c
@@ -169,7 +169,7 @@ static int64_t systick_get_us()
* its value can jump to 0 before the interrupt is triggered.
* Simply wait until it is not 0 and then read the count. */
do {
- __set_PRIMASK(0);
+ __set_PRIMASK(1);
val = SysTick->VAL;
count = systick_count;
__set_PRIMASK(irqsaved);
--
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