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-rw-r--r--examples/device/audio_test/src/tusb_config.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/examples/device/audio_test/src/tusb_config.h b/examples/device/audio_test/src/tusb_config.h
index 5d94858ea..61e63f073 100644
--- a/examples/device/audio_test/src/tusb_config.h
+++ b/examples/device/audio_test/src/tusb_config.h
@@ -45,7 +45,9 @@ extern "C" {
#define CFG_TUSB_RHPORT0_MODE OPT_MODE_DEVICE
#endif
+#ifndef CFG_TUSB_OS
#define CFG_TUSB_OS OPT_OS_NONE
+#endif
#ifndef CFG_TUSB_DEBUG
#define CFG_TUSB_DEBUG 0