From dbc3f581e5fb96e0472a58d23247d267c18a03fd Mon Sep 17 00:00:00 2001
From: Steve Fan <sf@m-labs.hk>
Date: Mon, 6 Dec 2021 14:51:46 +0800
Subject: [PATCH] rtio_mgt: capture occurrences of async errors to a global
 variable

---
 src/runtime/src/main.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/runtime/src/main.rs b/src/runtime/src/main.rs
index da93f3fb..1a303578 100644
--- a/src/runtime/src/main.rs
+++ b/src/runtime/src/main.rs
@@ -42,6 +42,13 @@ mod analyzer;
 mod irq;
 mod i2c;
 
+static mut SEEN_ASYNC_ERRORS: u8 = 0;
+
+pub unsafe fn get_async_errors() -> u8 {
+    let errors = SEEN_ASYNC_ERRORS;
+    SEEN_ASYNC_ERRORS = 0;
+    errors
+}
 
 fn wait_for_async_rtio_error() -> nb::Result<(), Void> {
     unsafe {
@@ -70,6 +77,7 @@ async fn report_async_rtio_errors() {
                 error!("RTIO sequence error involving channel {}",
                        pl::csr::rtio_core::sequence_error_channel_read());
             }
+            SEEN_ASYNC_ERRORS = errors;
             pl::csr::rtio_core::async_error_write(errors);
         }
     }