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diff --git a/wirish/stm32f1/wirish_digital.cpp b/wirish/stm32f1/wirish_digital.cpp
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+/******************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2010 Perry Hung.
+ * 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.
+ *****************************************************************************/
+
+/*
+ * STM32F1 implementations for basic GPIO functionality.
+ */
+
+#include <wirish/io.h>
+
+#include <libmaple/gpio.h>
+#include <libmaple/timer.h>
+
+#include <wirish/boards.h>
+
+void pinMode(uint8 pin, WiringPinMode mode) {
+ gpio_pin_mode outputMode;
+ bool pwm = false;
+
+ if (pin >= BOARD_NR_GPIO_PINS) {
+ return;
+ }
+
+ switch(mode) {
+ case OUTPUT:
+ outputMode = GPIO_OUTPUT_PP;
+ break;
+ case OUTPUT_OPEN_DRAIN:
+ outputMode = GPIO_OUTPUT_OD;
+ break;
+ case INPUT:
+ case INPUT_FLOATING:
+ outputMode = GPIO_INPUT_FLOATING;
+ break;
+ case INPUT_ANALOG:
+ outputMode = GPIO_INPUT_ANALOG;
+ break;
+ case INPUT_PULLUP:
+ outputMode = GPIO_INPUT_PU;
+ break;
+ case INPUT_PULLDOWN:
+ outputMode = GPIO_INPUT_PD;
+ break;
+ case PWM:
+ outputMode = GPIO_AF_OUTPUT_PP;
+ pwm = true;
+ break;
+ case PWM_OPEN_DRAIN:
+ outputMode = GPIO_AF_OUTPUT_OD;
+ pwm = true;
+ break;
+ default:
+ ASSERT(0);
+ return;
+ }
+
+ gpio_set_mode(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_bit, outputMode);
+
+ if (PIN_MAP[pin].timer_device != NULL) {
+ /* Enable/disable timer channels if we're switching into or
+ * out of PWM. */
+ timer_set_mode(PIN_MAP[pin].timer_device,
+ PIN_MAP[pin].timer_channel,
+ pwm ? TIMER_PWM : TIMER_DISABLED);
+ }
+}