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targets/TARGET_STM/TARGET_STM32F7/gpio_api.c
- Committer:
- <>
- Date:
- 2016-10-28
- Revision:
- 149:156823d33999
- Parent:
- targets/hal/TARGET_STM/TARGET_STM32F7/gpio_api.c@ 144:ef7eb2e8f9f7
File content as of revision 149:156823d33999:
/* mbed Microcontroller Library ******************************************************************************* * Copyright (c) 2015, STMicroelectronics * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ******************************************************************************* */ #include "mbed_assert.h" #include "gpio_api.h" #include "pinmap.h" #include "mbed_error.h" extern uint32_t Set_GPIO_Clock(uint32_t port_idx); uint32_t gpio_set(PinName pin) { MBED_ASSERT(pin != (PinName)NC); pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask } void gpio_init(gpio_t *obj, PinName pin) { obj->pin = pin; if (pin == (PinName)NC) return; uint32_t port_index = STM_PORT(pin); // Enable GPIO clock uint32_t gpio_add = Set_GPIO_Clock(port_index); GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; // Fill GPIO object structure for future use obj->mask = gpio_set(pin); obj->reg_in = &gpio->IDR; obj->reg_set_clr = &gpio->BSRR; } void gpio_mode(gpio_t *obj, PinMode mode) { pin_mode(obj->pin, mode); } void gpio_dir(gpio_t *obj, PinDirection direction) { MBED_ASSERT(obj->pin != (PinName)NC); if (direction == PIN_OUTPUT) { pin_function(obj->pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0)); } else { // PIN_INPUT pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); } }