mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_NXP/TARGET_LPC176X/gpio_api.c
- Committer:
- mbed_official
- Date:
- 2014-06-11
- Revision:
- 227:7bd0639b8911
- Parent:
- 113:65a335a675de
File content as of revision 227:7bd0639b8911:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * 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 "mbed_assert.h" #include "gpio_api.h" #include "pinmap.h" uint32_t gpio_set(PinName pin) { MBED_ASSERT(pin != (PinName)NC); pin_function(pin, 0); return (1 << ((int)pin & 0x1F)); } void gpio_init(gpio_t *obj, PinName pin) { obj->pin = pin; if (pin == (PinName)NC) return; obj->mask = gpio_set(pin); LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *)((int)pin & ~0x1F); obj->reg_set = &port_reg->FIOSET; obj->reg_clr = &port_reg->FIOCLR; obj->reg_in = &port_reg->FIOPIN; obj->reg_dir = &port_reg->FIODIR; } 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); switch (direction) { case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break; case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break; } }