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_LPC408X/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
bogdanm 15:4892fe388435 1 /* mbed Microcontroller Library
bogdanm 15:4892fe388435 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 15:4892fe388435 3 *
bogdanm 15:4892fe388435 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 15:4892fe388435 5 * you may not use this file except in compliance with the License.
bogdanm 15:4892fe388435 6 * You may obtain a copy of the License at
bogdanm 15:4892fe388435 7 *
bogdanm 15:4892fe388435 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 15:4892fe388435 9 *
bogdanm 15:4892fe388435 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 15:4892fe388435 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 15:4892fe388435 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 15:4892fe388435 13 * See the License for the specific language governing permissions and
bogdanm 15:4892fe388435 14 * limitations under the License.
bogdanm 15:4892fe388435 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
bogdanm 15:4892fe388435 17 #include "gpio_api.h"
bogdanm 15:4892fe388435 18 #include "pinmap.h"
bogdanm 15:4892fe388435 19
bogdanm 15:4892fe388435 20 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 21 MBED_ASSERT(pin != (PinName)NC);
bogdanm 15:4892fe388435 22 pin_function(pin, 0);
bogdanm 15:4892fe388435 23 return (1 << ((int)pin & 0x1F));
bogdanm 15:4892fe388435 24 }
bogdanm 15:4892fe388435 25
mbed_official 113:65a335a675de 26 void gpio_init(gpio_t *obj, PinName pin) {
bogdanm 15:4892fe388435 27 obj->pin = pin;
mbed_official 227:7bd0639b8911 28 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 29 return;
mbed_official 227:7bd0639b8911 30
bogdanm 15:4892fe388435 31 obj->mask = gpio_set(pin);
bogdanm 15:4892fe388435 32
bogdanm 15:4892fe388435 33 LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *) ((int)(LPC_GPIO0_BASE+pin) & ~0x1F);
bogdanm 15:4892fe388435 34
bogdanm 15:4892fe388435 35 obj->reg_set = &port_reg->SET;
bogdanm 15:4892fe388435 36 obj->reg_clr = &port_reg->CLR;
bogdanm 15:4892fe388435 37 obj->reg_in = &port_reg->PIN;
bogdanm 15:4892fe388435 38 obj->reg_dir = &port_reg->DIR;
bogdanm 15:4892fe388435 39 }
bogdanm 15:4892fe388435 40
bogdanm 15:4892fe388435 41 void gpio_mode(gpio_t *obj, PinMode mode) {
bogdanm 15:4892fe388435 42 pin_mode(obj->pin, mode);
bogdanm 15:4892fe388435 43 }
bogdanm 15:4892fe388435 44
bogdanm 15:4892fe388435 45 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 227:7bd0639b8911 46 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 227:7bd0639b8911 47
bogdanm 15:4892fe388435 48 switch (direction) {
mbed_official 227:7bd0639b8911 49 case PIN_INPUT :
mbed_official 227:7bd0639b8911 50 *obj->reg_dir &= ~obj->mask;
mbed_official 227:7bd0639b8911 51 break;
mbed_official 227:7bd0639b8911 52 case PIN_OUTPUT:
mbed_official 227:7bd0639b8911 53 *obj->reg_dir |= obj->mask;
mbed_official 227:7bd0639b8911 54 break;
bogdanm 15:4892fe388435 55 }
bogdanm 15:4892fe388435 56 }