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-rw-r--r--tinyusb/hal/hal.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/tinyusb/hal/hal.h b/tinyusb/hal/hal.h
index 9afad4726..ad77055eb 100644
--- a/tinyusb/hal/hal.h
+++ b/tinyusb/hal/hal.h
@@ -68,6 +68,10 @@
extern "C" {
#endif
+// callback from tusb.h
+extern void tusb_isr(uint8_t controller_id);
+
+
/** \brief USB hardware init
*
* \param[in] para1