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-rw-r--r--02-usart/include/usart.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/02-usart/include/usart.h b/02-usart/include/usart.h
index c645e92..9ed6dbb 100644
--- a/02-usart/include/usart.h
+++ b/02-usart/include/usart.h
@@ -217,5 +217,7 @@ void usart_transmit_bytes_sync(
void usart_transmit_str_sync(__IO usart_t* usart, const char* str);
+void usart_printf(__IO usart_t* usart, const char* fmt, ...);
+
#endif /* H__USART_ */