[BSP]stm32f10x: Add gpio driver for pin driver frame

bsp/stm32f10x/drivers/gpio.c

+/*
+ * File      : gpio.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2015, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-03-24     Bright      the first version
+ */
+
+#include <rthw.h>
+#include <rtdevice.h>
+#include <board.h>
+
+#ifdef RT_USING_PIN
+
+#define STM32F10X_PIN_NUMBERS 100
+
+#define __STM32_PIN(index, rcc, gpio, gpio_index) { 0, RCC_##rcc##Periph_GPIO##gpio, GPIO##gpio, GPIO_Pin_##gpio_index}
+#define __STM32_PIN_DEFAULT {-1, 0, 0, 0}
+
+/* STM32 GPIO driver */
+struct pin_index
+{
+    int index;
+    uint32_t rcc;
+    GPIO_TypeDef *gpio;
+    uint32_t pin;
+};
+
+static const struct pin_index pins[] =
+{
+#if (STM32F10X_PIN_NUMBERS == 100)
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN(1, APB2, E, 2),
+    __STM32_PIN(2, APB2, E, 3),
+    __STM32_PIN(3, APB2, E, 4),
+    __STM32_PIN(4, APB2, E, 5),
+    __STM32_PIN(5, APB2, E, 6),
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN(7, APB2, C, 13),
+    __STM32_PIN(8, APB2, C, 14),
+    __STM32_PIN(9, APB2, C, 15),
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN(15, APB2, C, 0),
+    __STM32_PIN(16, APB2, C, 1),
+    __STM32_PIN(17, APB2, C, 2),
+    __STM32_PIN(18, APB2, C, 3),
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN(23, APB2, A, 0),
+    __STM32_PIN(24, APB2, A, 1),
+    __STM32_PIN(25, APB2, A, 2),
+    __STM32_PIN(26, APB2, A, 3),
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN(29, APB2, A, 4),
+    __STM32_PIN(30, APB2, A, 5),
+    __STM32_PIN(31, APB2, A, 6),
+    __STM32_PIN(32, APB2, A, 7),
+    __STM32_PIN(33, APB2, C, 4),
+    __STM32_PIN(34, APB2, C, 5),
+    __STM32_PIN(35, APB2, B, 0),
+    __STM32_PIN(36, APB2, B, 1),
+    __STM32_PIN(37, APB2, B, 2),
+    __STM32_PIN(38, APB2, E, 7),
+    __STM32_PIN(39, APB2, E, 8),
+    __STM32_PIN(40, APB2, E, 9),
+    __STM32_PIN(41, APB2, E, 10),
+    __STM32_PIN(42, APB2, E, 11),
+    __STM32_PIN(43, APB2, E, 12),
+    __STM32_PIN(44, APB2, E, 13),
+    __STM32_PIN(45, APB2, E, 14),
+    __STM32_PIN(46, APB2, E, 15),
+    __STM32_PIN(47, APB2, B, 10),
+    __STM32_PIN(48, APB2, B, 11),
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN(51, APB2, B, 12),
+    __STM32_PIN(52, APB2, B, 13),
+    __STM32_PIN(53, APB2, B, 14),
+    __STM32_PIN(54, APB2, B, 15),
+    __STM32_PIN(55, APB2, D, 8),
+    __STM32_PIN(56, APB2, D, 9),
+    __STM32_PIN(57, APB2, D, 10),
+    __STM32_PIN(58, APB2, D, 11),
+    __STM32_PIN(59, APB2, D, 12),
+    __STM32_PIN(60, APB2, D, 13),
+    __STM32_PIN(61, APB2, D, 14),
+    __STM32_PIN(62, APB2, D, 15),
+    __STM32_PIN(63, APB2, C, 6),
+    __STM32_PIN(64, APB2, C, 7),
+    __STM32_PIN(65, APB2, C, 8),
+    __STM32_PIN(66, APB2, C, 9),
+    __STM32_PIN(67, APB2, A, 8),
+    __STM32_PIN(68, APB2, A, 9),
+    __STM32_PIN(69, APB2, A, 10),
+    __STM32_PIN(70, APB2, A, 11),
+    __STM32_PIN(71, APB2, A, 12),
+    __STM32_PIN(72, APB2, A, 13),
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN(76, APB2, A, 14),
+    __STM32_PIN(77, APB2, A, 15),
+    __STM32_PIN(78, APB2, C, 10),
+    __STM32_PIN(79, APB2, C, 11),
+    __STM32_PIN(80, APB2, C, 12),
+    __STM32_PIN(81, APB2, D, 0),
+    __STM32_PIN(82, APB2, D, 1),
+    __STM32_PIN(83, APB2, D, 2),
+    __STM32_PIN(84, APB2, D, 3),
+    __STM32_PIN(85, APB2, D, 4),
+    __STM32_PIN(86, APB2, D, 5),
+    __STM32_PIN(87, APB2, D, 6),
+    __STM32_PIN(88, APB2, D, 7),
+    __STM32_PIN(89, APB2, B, 3),
+    __STM32_PIN(90, APB2, B, 4),
+    __STM32_PIN(91, APB2, B, 5),
+    __STM32_PIN(92, APB2, B, 6),
+    __STM32_PIN(93, APB2, B, 7),
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN(95, APB2, B, 8),
+    __STM32_PIN(96, APB2, B, 9),
+    __STM32_PIN(97, APB2, E, 0),
+    __STM32_PIN(98, APB2, E, 1),
+    __STM32_PIN_DEFAULT,
+    __STM32_PIN_DEFAULT,
+#endif
+};
+
+
+#define ITEM_NUM(items) sizeof(items)/sizeof(items[0])
+const struct pin_index *get_pin(uint8_t pin)
+{
+    const struct pin_index *index;
+
+    if (pin < ITEM_NUM(pins))
+    {
+        index = &pins[pin];
+        if (index->index == -1)
+            index = RT_NULL;
+    }
+    else
+    {
+        index = RT_NULL;
+    }
+
+    return index;
+};
+
+void stm32_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t value)
+{
+    const struct pin_index *index;
+
+    index = get_pin(pin);
+    if (index == RT_NULL)
+    {
+        return;
+    }
+
+    if (value == PIN_LOW)
+    {
+        GPIO_ResetBits(index->gpio, index->pin);
+    }
+    else
+    {
+        GPIO_SetBits(index->gpio, index->pin);
+    }
+}
+
+int stm32_pin_read(rt_device_t dev, rt_base_t pin)
+{
+    int value;
+    const struct pin_index *index;
+
+    value = PIN_LOW;
+
+    index = get_pin(pin);
+    if (index == RT_NULL)
+    {
+        return value;
+    }
+
+    if (GPIO_ReadInputDataBit(index->gpio, index->pin) == Bit_RESET)
+    {
+        value = PIN_LOW;
+    }
+    else
+    {
+        value = PIN_HIGH;
+    }
+
+    return value;
+}
+
+void stm32_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
+{
+    const struct pin_index *index;
+    GPIO_InitTypeDef  GPIO_InitStructure;
+
+    index = get_pin(pin);
+    if (index == RT_NULL)
+    {
+        return;
+    }
+
+    /* GPIO Periph clock enable */
+    RCC_APB2PeriphClockCmd(index->rcc, ENABLE);
+
+    /* Configure GPIO_InitStructure */
+    GPIO_InitStructure.GPIO_Pin     = index->pin;
+    GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_Out_PP;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+
+    if (mode == PIN_MODE_OUTPUT)
+    {
+        /* output setting */
+        GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_Out_PP;
+    }
+    else if (mode == PIN_MODE_INPUT)
+    {
+        /* input setting: not pull. */
+        GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_IN_FLOATING;
+    }
+    else if (mode == PIN_MODE_INPUT_PULLUP)
+    {
+        /* input setting: pull up. */
+        GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_IPU;
+    }
+    else
+    {
+        /* input setting:default. */
+        GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_IPD;
+    }
+    GPIO_Init(index->gpio, &GPIO_InitStructure);
+}
+
+const static struct rt_pin_ops _stm32_pin_ops =
+{
+    stm32_pin_mode,
+    stm32_pin_write,
+    stm32_pin_read,
+};
+
+int stm32_hw_pin_init(void)
+{
+    int result;
+    
+    result = rt_device_pin_register("pin", &_stm32_pin_ops, RT_NULL);
+    return result;
+}
+INIT_BOARD_EXPORT(stm32_hw_pin_init);
+
+#endif

bsp/stm32f10x/drivers/gpio.h

+/*
+ * File      : gpio.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2015, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2015-01-05     Bernard      the first version
+ */
+#ifndef GPIO_H__
+#define GPIO_H__
+
+int stm32_hw_pin_init(void);
+
+#endif