/* mbed Microcontroller Library * Copyright (c) 2006-2020 ARM Limited * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "hal/gpio_api.h" #include "platform/mbed_toolchain.h" #include "hal/PinNameAliases.h" static inline void _gpio_init_in(gpio_t *gpio, PinName pin, PinMode mode) { gpio_init(gpio, pin); if (pin != NC) { gpio_dir(gpio, PIN_INPUT); gpio_mode(gpio, mode); } } static inline void _gpio_init_out(gpio_t *gpio, PinName pin, PinMode mode, int value) { gpio_init(gpio, pin); if (pin != NC) { gpio_write(gpio, value); gpio_dir(gpio, PIN_OUTPUT); gpio_mode(gpio, mode); } } void gpio_init_in(gpio_t *gpio, PinName pin) { gpio_init_in_ex(gpio, pin, PullDefault); } void gpio_init_in_ex(gpio_t *gpio, PinName pin, PinMode mode) { _gpio_init_in(gpio, pin, mode); } void gpio_init_out(gpio_t *gpio, PinName pin) { gpio_init_out_ex(gpio, pin, 0); } void gpio_init_out_ex(gpio_t *gpio, PinName pin, int value) { _gpio_init_out(gpio, pin, PullNone, value); } void gpio_init_inout(gpio_t *gpio, PinName pin, PinDirection direction, PinMode mode, int value) { if (direction == PIN_INPUT) { _gpio_init_in(gpio, pin, mode); if (pin != NC) { gpio_write(gpio, value); // we prepare the value in case it is switched later } } else { _gpio_init_out(gpio, pin, mode, value); } } // To be re-implemented in the target layer if required. MBED_WEAK void gpio_get_capabilities(gpio_t *gpio, gpio_capabilities_t *cap) { (void)gpio; // By default, every pin supports all basic input pull modes. cap->pull_none = 1; cap->pull_down = 1; cap->pull_up = 1; } typedef enum { DEFAULT_GPIO = 0, } DefaultGPIOPeripheralName; MBED_WEAK const PinMap *gpio_pinmap() { // Targets should override this weak implementation to provide correct data. static const PinMap empty_gpio_pinmap[] = { #if defined (TARGET_FF_ARDUINO) || (TARGET_FF_ARDUINO_UNO) {ARDUINO_UNO_D0, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D1, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D2, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D3, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D4, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D5, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D6, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D7, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D8, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D9, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D10, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D11, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D12, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D13, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D14, DEFAULT_GPIO, 0}, {ARDUINO_UNO_D15, DEFAULT_GPIO, 0}, {ARDUINO_UNO_A0, DEFAULT_GPIO, 0}, {ARDUINO_UNO_A1, DEFAULT_GPIO, 0}, {ARDUINO_UNO_A2, DEFAULT_GPIO, 0}, {ARDUINO_UNO_A3, DEFAULT_GPIO, 0}, {ARDUINO_UNO_A4, DEFAULT_GPIO, 0}, {ARDUINO_UNO_A5, DEFAULT_GPIO, 0}, #endif {NC, NC, 0}, }; return empty_gpio_pinmap; }