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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11U6X/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:
207:05668db47a72
Child:
398:7a7127adb6e8
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
mbed_official 174:8bb9f3a33240 1 /* mbed Microcontroller Library
mbed_official 174:8bb9f3a33240 2 * Copyright (c) 2006-2014 ARM Limited
mbed_official 174:8bb9f3a33240 3 *
mbed_official 174:8bb9f3a33240 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 174:8bb9f3a33240 5 * you may not use this file except in compliance with the License.
mbed_official 174:8bb9f3a33240 6 * You may obtain a copy of the License at
mbed_official 174:8bb9f3a33240 7 *
mbed_official 174:8bb9f3a33240 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 174:8bb9f3a33240 9 *
mbed_official 174:8bb9f3a33240 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 174:8bb9f3a33240 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 174:8bb9f3a33240 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 174:8bb9f3a33240 13 * See the License for the specific language governing permissions and
mbed_official 174:8bb9f3a33240 14 * limitations under the License.
mbed_official 174:8bb9f3a33240 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
mbed_official 174:8bb9f3a33240 17 #include "gpio_api.h"
mbed_official 174:8bb9f3a33240 18 #include "pinmap.h"
mbed_official 174:8bb9f3a33240 19
mbed_official 174:8bb9f3a33240 20 static int gpio_enabled = 0;
mbed_official 174:8bb9f3a33240 21
mbed_official 174:8bb9f3a33240 22 static void gpio_enable(void) {
mbed_official 174:8bb9f3a33240 23 gpio_enabled = 1;
mbed_official 174:8bb9f3a33240 24
mbed_official 174:8bb9f3a33240 25 /* Enable AHB clock to the GPIO and IOCON domain. */
mbed_official 174:8bb9f3a33240 26 LPC_SYSCON->SYSAHBCLKCTRL |= ((1 << 16) | (1 << 6));
mbed_official 174:8bb9f3a33240 27 }
mbed_official 174:8bb9f3a33240 28
mbed_official 174:8bb9f3a33240 29 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 30 MBED_ASSERT(pin != (PinName)NC);
mbed_official 174:8bb9f3a33240 31 if (!gpio_enabled)
mbed_official 174:8bb9f3a33240 32 gpio_enable();
mbed_official 174:8bb9f3a33240 33
mbed_official 207:05668db47a72 34 int f = ((pin == P0_0) ||
mbed_official 207:05668db47a72 35 (pin == P0_10) ||
mbed_official 207:05668db47a72 36 (pin == P0_15)) ? (1) : (0);
mbed_official 207:05668db47a72 37
mbed_official 207:05668db47a72 38 pin_function(pin, f);
mbed_official 207:05668db47a72 39
mbed_official 174:8bb9f3a33240 40 return (1UL << ((int)pin >> PIN_SHIFT & 0x1F));
mbed_official 174:8bb9f3a33240 41 }
mbed_official 174:8bb9f3a33240 42
mbed_official 174:8bb9f3a33240 43 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 174:8bb9f3a33240 44 obj->pin = pin;
mbed_official 227:7bd0639b8911 45 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 46 return;
mbed_official 227:7bd0639b8911 47
mbed_official 174:8bb9f3a33240 48 obj->mask = gpio_set(pin);
mbed_official 174:8bb9f3a33240 49
mbed_official 174:8bb9f3a33240 50 unsigned int port = (unsigned int)(pin >> PORT_SHIFT);
mbed_official 227:7bd0639b8911 51
mbed_official 174:8bb9f3a33240 52 obj->reg_set = &LPC_GPIO_PORT->SET[port];
mbed_official 174:8bb9f3a33240 53 obj->reg_clr = &LPC_GPIO_PORT->CLR[port];
mbed_official 174:8bb9f3a33240 54 obj->reg_in = &LPC_GPIO_PORT->PIN[port];
mbed_official 174:8bb9f3a33240 55 obj->reg_dir = &LPC_GPIO_PORT->DIR[port];
mbed_official 174:8bb9f3a33240 56 }
mbed_official 174:8bb9f3a33240 57
mbed_official 174:8bb9f3a33240 58 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 174:8bb9f3a33240 59 pin_mode(obj->pin, mode);
mbed_official 174:8bb9f3a33240 60 }
mbed_official 174:8bb9f3a33240 61
mbed_official 174:8bb9f3a33240 62 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 227:7bd0639b8911 63 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 174:8bb9f3a33240 64 switch (direction) {
mbed_official 227:7bd0639b8911 65 case PIN_INPUT :
mbed_official 227:7bd0639b8911 66 *obj->reg_dir &= ~obj->mask;
mbed_official 227:7bd0639b8911 67 break;
mbed_official 227:7bd0639b8911 68 case PIN_OUTPUT:
mbed_official 227:7bd0639b8911 69 *obj->reg_dir |= obj->mask;
mbed_official 227:7bd0639b8911 70 break;
mbed_official 174:8bb9f3a33240 71 }
mbed_official 174:8bb9f3a33240 72 }