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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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Last commit 20 Feb 2019 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 }