4 * This file is part of BeRTOS.
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
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21 * library without restriction. Specifically, if other files instantiate
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29 * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
33 * \brief STM32 GPIO control interface.
48 GPIO_MODE_IN_FLOATING = 0x04,
51 GPIO_MODE_OUT_OD = 0x14,
52 GPIO_MODE_OUT_PP = 0x10,
53 GPIO_MODE_AF_OD = 0x1C,
54 GPIO_MODE_AF_PP = 0x18,
71 * Write a value to the specified pin(s)
73 * \param base gpio register address
74 * \param pins mask of pins that we want set or clear
75 * \param val true to set selected pins of false to clear they.
77 INLINE void stm32_gpioPinWrite(struct stm32_gpio *base, uint32_t pins, bool val)
86 * Read a value from the specified pin(s)
88 * \param base gpio register address
89 * \param pins mask of pins that we want read
91 INLINE uint8_t stm32_gpioPinRead(struct stm32_gpio *base, uint32_t pins)
93 return !!(base->IDR & pins);
97 * Initialize a GPIO peripheral configuration
99 * \param base gpio register address
100 * \param pins mask of pins that we want to configure
101 * \param mode select the behaviour of selected pins
102 * \param speed clock frequency for selected gpio ports
104 int stm32_gpioPinConfig(struct stm32_gpio *base, uint16_t pins, uint8_t mode, uint8_t speed);
106 #endif /* GPIO_STM32_H */