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targets/TARGET_NXP/TARGET_LPC13XX/gpio_api.c
- Committer:
- <>
- Date:
- 2016-10-28
- Revision:
- 149:156823d33999
- Parent:
- targets/hal/TARGET_NXP/TARGET_LPC13XX/gpio_api.c@ 144:ef7eb2e8f9f7
File content as of revision 149:156823d33999:
/* 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); int f = ((pin == P0_11) || (pin == P0_12) || (pin == P0_13) || (pin == P0_14)) ? (1) : (0); pin_function(pin, f); 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); unsigned int port = (unsigned int)pin >> PORT_SHIFT; obj->reg_set = &LPC_GPIO->SET[port]; obj->reg_clr = &LPC_GPIO->CLR[port]; obj->reg_in = &LPC_GPIO->PIN[port]; obj->reg_dir = &LPC_GPIO->DIR[port]; } 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; } }