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diff --git a/source/usart.rst b/source/usart.rst index 4807431..dbbc81c 100644 --- a/source/usart.rst +++ b/source/usart.rst @@ -55,7 +55,7 @@ Recommended Reading * `Arduino Serial reference <http://arduino.cc/en/Reference/Serial>`_ * ST `Reference Manual RM0008 - <http://www.st.com/stonline/products/literature/rm/13902.pdf>`_ + <http://www.st.com/web/en/resource/technical/document/reference_manual/CD00171190.pdf>`_ (PDF), Chapter 27. * `Serial and UART Tutorial <http://www.freebsd.org/doc/en/articles/serial-uart/>`_ (written for |