test / mbed_in_china

来自中国的硬件平台

Dependents:   mbed_in_china_blink_led

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11UXX/gpio_api.c@113:65a335a675de, 2014-03-10 (annotated)

Committer:
mbed_official
Date:
Mon Mar 10 11:30:07 2014 +0000
Revision:
113:65a335a675de
Parent:
13:0645d8841f51 
Synchronized with git revision 423ddcb86e83e2e0d599ca7106d436eb3c47e6dd



Full URL: https://github.com/mbedmicro/mbed/commit/423ddcb86e83e2e0d599ca7106d436eb3c47e6dd/



proposed change of gpio_api (new update pull request)

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 */
emilmont 10:3bc89ef62ce7 16 #include "gpio_api.h"
emilmont 10:3bc89ef62ce7 17 #include "pinmap.h"
emilmont 10:3bc89ef62ce7 18
emilmont 10:3bc89ef62ce7 19 uint32_t gpio_set(PinName pin) {
emilmont 10:3bc89ef62ce7 20 int f = ((pin == P0_11) ||
emilmont 10:3bc89ef62ce7 21 (pin == P0_12) ||
emilmont 10:3bc89ef62ce7 22 (pin == P0_13) ||
emilmont 10:3bc89ef62ce7 23 (pin == P0_14)) ? (1) : (0);
emilmont 10:3bc89ef62ce7 24
emilmont 10:3bc89ef62ce7 25 pin_function(pin, f);
emilmont 10:3bc89ef62ce7 26
emilmont 10:3bc89ef62ce7 27 return (1 << ((int)pin & 0x1F));
emilmont 10:3bc89ef62ce7 28 }
emilmont 10:3bc89ef62ce7 29
mbed_official 113:65a335a675de 30 void gpio_init(gpio_t *obj, PinName pin) {
emilmont 10:3bc89ef62ce7 31 if(pin == NC) return;
emilmont 10:3bc89ef62ce7 32
emilmont 10:3bc89ef62ce7 33 obj->pin = pin;
emilmont 10:3bc89ef62ce7 34 obj->mask = gpio_set(pin);
emilmont 10:3bc89ef62ce7 35
emilmont 10:3bc89ef62ce7 36 unsigned int port = (unsigned int)pin >> PORT_SHIFT;
emilmont 10:3bc89ef62ce7 37
emilmont 10:3bc89ef62ce7 38 obj->reg_set = &LPC_GPIO->SET[port];
emilmont 10:3bc89ef62ce7 39 obj->reg_clr = &LPC_GPIO->CLR[port];
emilmont 10:3bc89ef62ce7 40 obj->reg_in = &LPC_GPIO->PIN[port];
emilmont 10:3bc89ef62ce7 41 obj->reg_dir = &LPC_GPIO->DIR[port];
emilmont 10:3bc89ef62ce7 42 }
emilmont 10:3bc89ef62ce7 43
emilmont 10:3bc89ef62ce7 44 void gpio_mode(gpio_t *obj, PinMode mode) {
emilmont 10:3bc89ef62ce7 45 pin_mode(obj->pin, mode);
emilmont 10:3bc89ef62ce7 46 }
emilmont 10:3bc89ef62ce7 47
emilmont 10:3bc89ef62ce7 48 void gpio_dir(gpio_t *obj, PinDirection direction) {
emilmont 10:3bc89ef62ce7 49 switch (direction) {
emilmont 10:3bc89ef62ce7 50 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
emilmont 10:3bc89ef62ce7 51 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
emilmont 10:3bc89ef62ce7 52 }
emilmont 10:3bc89ef62ce7 53 }