#ifndef ucoo_hal_gpio_gpio_stm32f4_hh #define ucoo_hal_gpio_gpio_stm32f4_hh // ucoolib - Microcontroller object oriented library. {{{ // // Copyright (C) 2012 Nicolas Schodet // // 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. // // }}} #include "ucoo/intf/io.hh" #include namespace ucoo { /// General purpose input/output on STM32F4. class Gpio : public Io { public: enum class Pull : uint32_t { NONE = GPIO_PUPD_NONE, UP = GPIO_PUPD_PULLUP, DOWN = GPIO_PUPD_PULLDOWN, }; enum class Speed : uint32_t { SPEED_2MHZ = GPIO_OSPEED_2MHZ, SPEED_25MHZ = GPIO_OSPEED_25MHZ, SPEED_50MHZ = GPIO_OSPEED_50MHZ, SPEED_100MHZ = GPIO_OSPEED_100MHZ, }; public: /// Constructor, take the PORT base address, and pin BIT number. Gpio (uint32_t port, int bit); /// See Io::set. void set (); /// See Io::reset. void reset (); /// See Io::set. void set (bool state); /// See Io::toggle. void toggle (); /// See Io::get. bool get () const; /// See Io::input. void input (); /// See Io::output. void output (); /// Set pull-up or pull-down. void pull (Pull dir); /// Set output speed. void speed (Speed s); /// Set alternate function. void af (int num); /// Set as analog. void analog (); private: /// Port register base address. const uint32_t port_; /// IO bitmask. const uint16_t mask_; }; inline Gpio::Gpio (uint32_t port, int bit) : port_ (port), mask_ (1u << bit) { } } // namespace ucoo #endif // ucoo_hal_gpio_gpio_stm32f4_hh