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diff --git a/src/stm/ao_flash_stm_pins.h b/src/stm/ao_flash_stm_pins.h
new file mode 100644
index 00000000..d157a226
--- /dev/null
+++ b/src/stm/ao_flash_stm_pins.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_FLASH_STM_PINS_H_
+#define _AO_FLASH_STM_PINS_H_
+
+#include <ao_flash_pins.h>
+
+/* PLLVCO = 96MHz (so that USB will work) */
+#define AO_PLLMUL		12
+#define AO_RCC_CFGR_PLLMUL	(STM_RCC_CFGR_PLLMUL_12)
+
+/* SYSCLK = 32MHz */
+#define AO_PLLDIV		3
+#define AO_RCC_CFGR_PLLDIV	(STM_RCC_CFGR_PLLDIV_3)
+
+/* HCLK = 32MHZ (CPU clock) */
+#define AO_AHB_PRESCALER	1
+#define AO_RCC_CFGR_HPRE_DIV	STM_RCC_CFGR_HPRE_DIV_1
+
+/* Run APB1 at HCLK/1 */
+#define AO_APB1_PRESCALER	1
+#define AO_RCC_CFGR_PPRE1_DIV	STM_RCC_CFGR_PPRE2_DIV_1
+
+/* Run APB2 at HCLK/1 */
+#define AO_APB2_PRESCALER      	1
+#define AO_RCC_CFGR_PPRE2_DIV	STM_RCC_CFGR_PPRE2_DIV_1
+
+#endif /* _AO_FLASH_STM_PINS_H_ */