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_LPC43XX/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:
20:4263a77256ae
Child:
227:7bd0639b8911
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 20:4263a77256ae 1 /* mbed Microcontroller Library
bogdanm 20:4263a77256ae 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 20:4263a77256ae 3 *
bogdanm 20:4263a77256ae 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 20:4263a77256ae 5 * you may not use this file except in compliance with the License.
bogdanm 20:4263a77256ae 6 * You may obtain a copy of the License at
bogdanm 20:4263a77256ae 7 *
bogdanm 20:4263a77256ae 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 20:4263a77256ae 9 *
bogdanm 20:4263a77256ae 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 20:4263a77256ae 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 20:4263a77256ae 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 20:4263a77256ae 13 * See the License for the specific language governing permissions and
bogdanm 20:4263a77256ae 14 * limitations under the License.
bogdanm 20:4263a77256ae 15 *
bogdanm 20:4263a77256ae 16 * Ported to NXP LPC43XX by Micromint USA <support@micromint.com>
bogdanm 20:4263a77256ae 17 */
bogdanm 20:4263a77256ae 18 #include "gpio_api.h"
bogdanm 20:4263a77256ae 19 #include "pinmap.h"
bogdanm 20:4263a77256ae 20
bogdanm 20:4263a77256ae 21 uint32_t gpio_set(PinName pin) {
bogdanm 20:4263a77256ae 22 int f = 0;
bogdanm 20:4263a77256ae 23 unsigned int port = (unsigned int)MBED_GPIO_PORT(pin);
bogdanm 20:4263a77256ae 24
bogdanm 20:4263a77256ae 25 f = SCU_PINIO_FAST | ((port > 4) ? (4) : (0));
bogdanm 20:4263a77256ae 26 pin_function(pin, f);
bogdanm 20:4263a77256ae 27
bogdanm 20:4263a77256ae 28 return (1 << ((int)pin & 0x1F));
bogdanm 20:4263a77256ae 29 }
bogdanm 20:4263a77256ae 30
mbed_official 113:65a335a675de 31 void gpio_init(gpio_t *obj, PinName pin) {
bogdanm 20:4263a77256ae 32 if (pin == NC) return;
bogdanm 20:4263a77256ae 33
bogdanm 20:4263a77256ae 34 obj->pin = pin;
bogdanm 20:4263a77256ae 35 obj->mask = gpio_set(pin);
bogdanm 20:4263a77256ae 36
bogdanm 20:4263a77256ae 37 LPC_GPIO_T *port_reg = (LPC_GPIO_T *) (LPC_GPIO_PORT_BASE);
bogdanm 20:4263a77256ae 38 unsigned int port = (unsigned int)MBED_GPIO_PORT(pin);
bogdanm 20:4263a77256ae 39
bogdanm 20:4263a77256ae 40 obj->reg_set = &port_reg->SET[port];
bogdanm 20:4263a77256ae 41 obj->reg_clr = &port_reg->CLR[port];
bogdanm 20:4263a77256ae 42 obj->reg_in = &port_reg->PIN[port];
bogdanm 20:4263a77256ae 43 obj->reg_dir = &port_reg->DIR[port];
bogdanm 20:4263a77256ae 44 }
bogdanm 20:4263a77256ae 45
bogdanm 20:4263a77256ae 46 void gpio_mode(gpio_t *obj, PinMode mode) {
bogdanm 20:4263a77256ae 47 pin_mode(obj->pin, mode);
bogdanm 20:4263a77256ae 48 }
bogdanm 20:4263a77256ae 49
bogdanm 20:4263a77256ae 50 void gpio_dir(gpio_t *obj, PinDirection direction) {
bogdanm 20:4263a77256ae 51 switch (direction) {
bogdanm 20:4263a77256ae 52 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
bogdanm 20:4263a77256ae 53 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
bogdanm 20:4263a77256ae 54 }
bogdanm 20:4263a77256ae 55 }