test / mbed-src

mbed library sources

Dependents:   bare

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC408X/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:
15:4892fe388435 
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
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 */
bogdanm 15:4892fe388435 16 #include "gpio_api.h"
bogdanm 15:4892fe388435 17 #include "pinmap.h"
bogdanm 15:4892fe388435 18
bogdanm 15:4892fe388435 19 uint32_t gpio_set(PinName pin) {
bogdanm 15:4892fe388435 20 pin_function(pin, 0);
bogdanm 15:4892fe388435 21 return (1 << ((int)pin & 0x1F));
bogdanm 15:4892fe388435 22 }
bogdanm 15:4892fe388435 23
mbed_official 113:65a335a675de 24 void gpio_init(gpio_t *obj, PinName pin) {
bogdanm 15:4892fe388435 25 if (pin == NC) return;
bogdanm 15:4892fe388435 26
bogdanm 15:4892fe388435 27 obj->pin = pin;
bogdanm 15:4892fe388435 28 obj->mask = gpio_set(pin);
bogdanm 15:4892fe388435 29
bogdanm 15:4892fe388435 30 LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *) ((int)(LPC_GPIO0_BASE+pin) & ~0x1F);
bogdanm 15:4892fe388435 31
bogdanm 15:4892fe388435 32 obj->reg_set = &port_reg->SET;
bogdanm 15:4892fe388435 33 obj->reg_clr = &port_reg->CLR;
bogdanm 15:4892fe388435 34 obj->reg_in = &port_reg->PIN;
bogdanm 15:4892fe388435 35 obj->reg_dir = &port_reg->DIR;
bogdanm 15:4892fe388435 36 }
bogdanm 15:4892fe388435 37
bogdanm 15:4892fe388435 38 void gpio_mode(gpio_t *obj, PinMode mode) {
bogdanm 15:4892fe388435 39 pin_mode(obj->pin, mode);
bogdanm 15:4892fe388435 40 }
bogdanm 15:4892fe388435 41
bogdanm 15:4892fe388435 42 void gpio_dir(gpio_t *obj, PinDirection direction) {
bogdanm 15:4892fe388435 43 switch (direction) {
bogdanm 15:4892fe388435 44 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
bogdanm 15:4892fe388435 45 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
bogdanm 15:4892fe388435 46 }
bogdanm 15:4892fe388435 47 }