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diff --git a/wirish/boards_private.h b/wirish/boards_private.h
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+/******************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2012 LeafLabs, LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *****************************************************************************/
+
+/**
+ * @file wirish/boards_private.h
+ * @author Marti Bolivar <mbolivar@leaflabs.com>
+ * @brief Private board support header.
+ *
+ * This file declares chip-specific variables and functions which
+ * determine how init() behaves. It is not part of the public Wirish
+ * API, and can change without notice.
+ */
+
+#ifndef _WIRISH_BOARDS_PRIVATE_H_
+#define _WIRISH_BOARDS_PRIVATE_H_
+
+#include <libmaple/rcc.h>
+#include <libmaple/adc.h>
+
+/* Makes the PIN_MAP rows more human-readable. */
+#define PMAP_ROW(gpio_dev, gpio_bit, timer_dev, timer_ch, adc_dev, adc_ch) \
+    { gpio_dev, timer_dev, adc_dev, gpio_bit, timer_ch, adc_ch }
+
+namespace wirish {
+    namespace priv {
+
+        /*
+         * Chip-specific initialization data
+         */
+
+        extern rcc_pll_cfg w_board_pll_cfg;
+        extern adc_prescaler w_adc_pre;
+        extern adc_smp_rate w_adc_smp;
+
+        /*
+         * Chip-specific initialization routines and helper functions.
+         */
+
+        void board_reset_pll(void);
+        void board_setup_clock_prescalers(void);
+        void board_setup_gpio(void);
+        void board_setup_usb(void);
+        void series_init(void);
+
+    }
+}
+
+#endif