shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC176X/gpio_api.c@227:7bd0639b8911, 2014-06-11 (annotated)

Committer:
mbed_official
Date:
Wed Jun 11 16:00:09 2014 +0100
Revision:
227:7bd0639b8911
Parent:
113:65a335a675de 
Synchronized with git revision d58d532ebc0e0a96f4fffb8edefc082b71b964af



Full URL: https://github.com/mbedmicro/mbed/commit/d58d532ebc0e0a96f4fffb8edefc082b71b964af/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
emilmont 10:3bc89ef62ce7 17 #include "gpio_api.h"
emilmont 10:3bc89ef62ce7 18 #include "pinmap.h"
emilmont 10:3bc89ef62ce7 19
emilmont 10:3bc89ef62ce7 20 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 21 MBED_ASSERT(pin != (PinName)NC);
emilmont 10:3bc89ef62ce7 22 pin_function(pin, 0);
emilmont 10:3bc89ef62ce7 23 return (1 << ((int)pin & 0x1F));
emilmont 10:3bc89ef62ce7 24 }
emilmont 10:3bc89ef62ce7 25
mbed_official 113:65a335a675de 26 void gpio_init(gpio_t *obj, PinName pin) {
emilmont 10:3bc89ef62ce7 27 obj->pin = pin;
mbed_official 227:7bd0639b8911 28 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 29 return;
mbed_official 227:7bd0639b8911 30
emilmont 10:3bc89ef62ce7 31 obj->mask = gpio_set(pin);
mbed_official 227:7bd0639b8911 32 LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *)((int)pin & ~0x1F);
emilmont 10:3bc89ef62ce7 33 obj->reg_set = &port_reg->FIOSET;
emilmont 10:3bc89ef62ce7 34 obj->reg_clr = &port_reg->FIOCLR;
emilmont 10:3bc89ef62ce7 35 obj->reg_in = &port_reg->FIOPIN;
emilmont 10:3bc89ef62ce7 36 obj->reg_dir = &port_reg->FIODIR;
emilmont 10:3bc89ef62ce7 37 }
emilmont 10:3bc89ef62ce7 38
emilmont 10:3bc89ef62ce7 39 void gpio_mode(gpio_t *obj, PinMode mode) {
emilmont 10:3bc89ef62ce7 40 pin_mode(obj->pin, mode);
emilmont 10:3bc89ef62ce7 41 }
emilmont 10:3bc89ef62ce7 42
emilmont 10:3bc89ef62ce7 43 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 227:7bd0639b8911 44 MBED_ASSERT(obj->pin != (PinName)NC);
emilmont 10:3bc89ef62ce7 45 switch (direction) {
mbed_official 227:7bd0639b8911 46 case PIN_INPUT :
mbed_official 227:7bd0639b8911 47 *obj->reg_dir &= ~obj->mask;
mbed_official 227:7bd0639b8911 48 break;
mbed_official 227:7bd0639b8911 49 case PIN_OUTPUT:
mbed_official 227:7bd0639b8911 50 *obj->reg_dir |= obj->mask;
mbed_official 227:7bd0639b8911 51 break;
emilmont 10:3bc89ef62ce7 52 }
emilmont 10:3bc89ef62ce7 53 }