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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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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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@174:8bb9f3a33240, 2014-04-29 (annotated)

Committer:
mbed_official
Date:
Tue Apr 29 11:15:07 2014 +0100
Revision:
174:8bb9f3a33240
Child:
207:05668db47a72
Synchronized with git revision 5bf985ebc651a2c31cefabd9d62c51dc465ef60a



Full URL: https://github.com/mbedmicro/mbed/commit/5bf985ebc651a2c31cefabd9d62c51dc465ef60a/



[NUCLEO_L152RE/F103RB] Add LSE configuration for RTC

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 174:8bb9f3a33240 16 #include "gpio_api.h"
mbed_official 174:8bb9f3a33240 17 #include "pinmap.h"
mbed_official 174:8bb9f3a33240 18
mbed_official 174:8bb9f3a33240 19 static int gpio_enabled = 0;
mbed_official 174:8bb9f3a33240 20
mbed_official 174:8bb9f3a33240 21 static void gpio_enable(void) {
mbed_official 174:8bb9f3a33240 22 gpio_enabled = 1;
mbed_official 174:8bb9f3a33240 23
mbed_official 174:8bb9f3a33240 24 /* Enable AHB clock to the GPIO and IOCON domain. */
mbed_official 174:8bb9f3a33240 25 LPC_SYSCON->SYSAHBCLKCTRL |= ((1 << 16) | (1 << 6));
mbed_official 174:8bb9f3a33240 26 }
mbed_official 174:8bb9f3a33240 27
mbed_official 174:8bb9f3a33240 28 uint32_t gpio_set(PinName pin) {
mbed_official 174:8bb9f3a33240 29
mbed_official 174:8bb9f3a33240 30 if (!gpio_enabled)
mbed_official 174:8bb9f3a33240 31 gpio_enable();
mbed_official 174:8bb9f3a33240 32
mbed_official 174:8bb9f3a33240 33 return (1UL << ((int)pin >> PIN_SHIFT & 0x1F));
mbed_official 174:8bb9f3a33240 34 }
mbed_official 174:8bb9f3a33240 35
mbed_official 174:8bb9f3a33240 36 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 174:8bb9f3a33240 37 if(pin == NC) return;
mbed_official 174:8bb9f3a33240 38
mbed_official 174:8bb9f3a33240 39 obj->pin = pin;
mbed_official 174:8bb9f3a33240 40 obj->mask = gpio_set(pin);
mbed_official 174:8bb9f3a33240 41
mbed_official 174:8bb9f3a33240 42 unsigned int port = (unsigned int)(pin >> PORT_SHIFT);
mbed_official 174:8bb9f3a33240 43
mbed_official 174:8bb9f3a33240 44 obj->reg_set = &LPC_GPIO_PORT->SET[port];
mbed_official 174:8bb9f3a33240 45 obj->reg_clr = &LPC_GPIO_PORT->CLR[port];
mbed_official 174:8bb9f3a33240 46 obj->reg_in = &LPC_GPIO_PORT->PIN[port];
mbed_official 174:8bb9f3a33240 47 obj->reg_dir = &LPC_GPIO_PORT->DIR[port];
mbed_official 174:8bb9f3a33240 48 }
mbed_official 174:8bb9f3a33240 49
mbed_official 174:8bb9f3a33240 50 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 174:8bb9f3a33240 51 pin_mode(obj->pin, mode);
mbed_official 174:8bb9f3a33240 52 }
mbed_official 174:8bb9f3a33240 53
mbed_official 174:8bb9f3a33240 54 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 174:8bb9f3a33240 55 switch (direction) {
mbed_official 174:8bb9f3a33240 56 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
mbed_official 174:8bb9f3a33240 57 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
mbed_official 174:8bb9f3a33240 58 }
mbed_official 174:8bb9f3a33240 59 }