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-rw-r--r--lib/lm4f/systemcontrol.c40
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diff --git a/lib/lm4f/systemcontrol.c b/lib/lm4f/systemcontrol.c
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+/*
+ * This file is part of the libopencm3 project.
+ *
+ * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <libopencm3/lm4f/systemcontrol.h>
+
+/**
+ * \brief Enable the clock source for the peripheral
+ *
+ * @param[in] periph peripheral and clock type to enable @see clken_t
+ */
+void periph_clock_enable(clken_t periph)
+{
+ MMIO32(SYSCTL_BASE + (periph >> 5)) |= 1 << (periph & 0x1f);
+}
+
+/**
+ * \brief Disable the clock source for the peripheral
+ *
+ * @param[in] periph peripheral and clock type to enable @see clken_t
+ */
+void periph_clock_disable(clken_t periph)
+{
+ MMIO32(SYSCTL_BASE + (periph >> 5)) &= ~(1 << (periph & 0x1f));
+}