63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
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//! \file stm32f4_gpio.h
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//! \author tkl
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//! \date Mai 8, 2012
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//! \brief Header file of the stm32f4xx architecture dependent gpio driver.
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#ifndef STM32F4_GPIO_H_
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#define STM32F4_GPIO_H_
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//! callback for the external interrupt
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typedef void* (*gpio_ext_it_cb_t)(void*);
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//! \brief stm32f4 gpio device
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struct stm32f4_gpio {
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GPIO_TypeDef *port; //!< Gpio port
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const GPIO_InitTypeDef *pin; //!< Gpio pin
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const EXTI_InitTypeDef *exti; //!< Gpio exit it (could be NULL)
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const NVIC_InitTypeDef *nvic; //!< Gpio nvic (could be NULL)
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gpio_ext_it_cb_t ext_it_cb; //!< Gpio ext it callback (could be NULL)
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void *param; //!< Parameter for the callback
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};
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//! \brief Open a gpio.
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//! \param gpio The gpio to open. Must be of type stm32f4_gpio_t.
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//! \retval -1 in error case.
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int stm32f4_gpio_open(const void *gpio);
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//! \brief Close a gpio.
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//! \param gpio The gpio to close. Must be of type stm32f4_gpio_t.
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//! \retval -1 in error case.
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int stm32f4_gpio_close(const void *gpio);
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//! \brief Read a gpio.
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//! \param gpio The gpio to read. Must be of type stm32f4_gpio_t.
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//! \return read out value.
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char stm32f4_gpio_read(const void *gpio);
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//! \brief Write to a gpio.
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//! \param gpio The gpio to write. Must be of type stm32f4_gpio_t.
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//! \param byte The data to write.
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void stm32f4_gpio_write(const void *gpio, char byte);
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//! \brief Toggle a gpio.
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//! \param gpio The gpio to read. Must be of type stm32f4_gpio_t.
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void stm32f4_gpio_toggle(const void *gpio);
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//! \brief Set the callback for a gpio pin external interrupt.
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//! \param gpio The gpio to set call back for. Must be of type stm32f4_gpio_t.
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//! \param callback The function pointer to call back.
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//! \param param The parameter for the call back.
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//! \retval -1 in error case.
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int stm32f4_gpio_set_exti_callback(const void *gpio, const void *callback,
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const void *param);
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static const struct gpio_fp gpio_fp = {
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stm32f4_gpio_open,
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stm32f4_gpio_close,
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stm32f4_gpio_read,
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stm32f4_gpio_write,
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stm32f4_gpio_toggle,
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stm32f4_gpio_set_exti_callback
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};
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#endif /* STM32F4_GPIO_H_ */
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