zain aftab / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC13XX/gpio_api.c@636:a11c0372f0ba, 2015-09-30 (annotated)

Committer:
mbed_official
Date:
Wed Sep 30 17:00:09 2015 +0100
Revision:
636:a11c0372f0ba
Parent:
227:7bd0639b8911 
Synchronized with git revision d29c98dae61be0946ddf3a3c641c7726056f9452



Full URL: https://github.com/mbedmicro/mbed/commit/d29c98dae61be0946ddf3a3c641c7726056f9452/



Added support for SAMW25

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 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
emilmont 10:3bc89ef62ce7 17 #include "gpio_api.h"
emilmont 10:3bc89ef62ce7 18 #include "pinmap.h"
emilmont 10:3bc89ef62ce7 19
emilmont 10:3bc89ef62ce7 20 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 21 MBED_ASSERT(pin != (PinName)NC);
mbed_official 227:7bd0639b8911 22 int f = ((pin == P0_11) || (pin == P0_12) ||
mbed_official 227:7bd0639b8911 23 (pin == P0_13) || (pin == P0_14)) ? (1) : (0);
emilmont 10:3bc89ef62ce7 24 pin_function(pin, f);
mbed_official 227:7bd0639b8911 25
emilmont 10:3bc89ef62ce7 26 return (1 << ((int)pin & 0x1F));
emilmont 10:3bc89ef62ce7 27 }
emilmont 10:3bc89ef62ce7 28
mbed_official 113:65a335a675de 29 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 227:7bd0639b8911 30 obj->pin = pin;
mbed_official 227:7bd0639b8911 31 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 32 return;
emilmont 10:3bc89ef62ce7 33
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) {
mbed_official 227:7bd0639b8911 49 MBED_ASSERT(obj->pin != (PinName)NC);
emilmont 10:3bc89ef62ce7 50 switch (direction) {
mbed_official 227:7bd0639b8911 51 case PIN_INPUT :
mbed_official 227:7bd0639b8911 52 *obj->reg_dir &= ~obj->mask;
mbed_official 227:7bd0639b8911 53 break;
mbed_official 227:7bd0639b8911 54 case PIN_OUTPUT:
mbed_official 227:7bd0639b8911 55 *obj->reg_dir |= obj->mask;
mbed_official 227:7bd0639b8911 56 break;
emilmont 10:3bc89ef62ce7 57 }
emilmont 10:3bc89ef62ce7 58 }