Fallback SOF timer

Setup a timer to call manual_sof() again after 1050us in case we stop getting SOFs from host.
jfedor2 · Dec 8, 2024 · 229d8b6 · 229d8b6
1 parent 1a0b770
commit 229d8b6
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/firmware/src/remapper_single.cc b/firmware/src/remapper_single.cc
@@ -123,7 +123,14 @@ void send_out_report() {
     do_send_out_report();
 }
 
+static alarm_id_t fallback_sof_alarm = 0;
+
 static int64_t __no_inline_not_in_flash_func(manual_sof)(alarm_id_t id, void* user_data) {
+    if (fallback_sof_alarm) {
+        cancel_alarm(fallback_sof_alarm);
+    }
+    fallback_sof_alarm = add_alarm_in_us(1050, manual_sof, NULL, false);
+
     pio_usb_host_frame();
     set_tick_pending();
     return 0;