Adam Kucybala / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11U6X/gpio_api.c@207:05668db47a72, 2014-05-23 (annotated)

Committer:
mbed_official
Date:
Fri May 23 08:45:06 2014 +0100
Revision:
207:05668db47a72
Parent:
174:8bb9f3a33240 
Synchronized with git revision 10e3a9cea1c4a29a2df1152d715558ad48b085ad



Full URL: https://github.com/mbedmicro/mbed/commit/10e3a9cea1c4a29a2df1152d715558ad48b085ad/



[STM32F103RB] Support for GCC_ARM toolchain

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 if (!gpio_enabled)
mbed_official 174:8bb9f3a33240 30 gpio_enable();
mbed_official 174:8bb9f3a33240 31
mbed_official 207:05668db47a72 32 int f = ((pin == P0_0) ||
mbed_official 207:05668db47a72 33 (pin == P0_10) ||
mbed_official 207:05668db47a72 34 (pin == P0_15)) ? (1) : (0);
mbed_official 207:05668db47a72 35
mbed_official 207:05668db47a72 36 pin_function(pin, f);
mbed_official 207:05668db47a72 37
mbed_official 174:8bb9f3a33240 38 return (1UL << ((int)pin >> PIN_SHIFT & 0x1F));
mbed_official 174:8bb9f3a33240 39 }
mbed_official 174:8bb9f3a33240 40
mbed_official 174:8bb9f3a33240 41 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 174:8bb9f3a33240 42 if(pin == NC) return;
mbed_official 174:8bb9f3a33240 43
mbed_official 174:8bb9f3a33240 44 obj->pin = pin;
mbed_official 174:8bb9f3a33240 45 obj->mask = gpio_set(pin);
mbed_official 174:8bb9f3a33240 46
mbed_official 174:8bb9f3a33240 47 unsigned int port = (unsigned int)(pin >> PORT_SHIFT);
mbed_official 174:8bb9f3a33240 48
mbed_official 174:8bb9f3a33240 49 obj->reg_set = &LPC_GPIO_PORT->SET[port];
mbed_official 174:8bb9f3a33240 50 obj->reg_clr = &LPC_GPIO_PORT->CLR[port];
mbed_official 174:8bb9f3a33240 51 obj->reg_in = &LPC_GPIO_PORT->PIN[port];
mbed_official 174:8bb9f3a33240 52 obj->reg_dir = &LPC_GPIO_PORT->DIR[port];
mbed_official 174:8bb9f3a33240 53 }
mbed_official 174:8bb9f3a33240 54
mbed_official 174:8bb9f3a33240 55 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 174:8bb9f3a33240 56 pin_mode(obj->pin, mode);
mbed_official 174:8bb9f3a33240 57 }
mbed_official 174:8bb9f3a33240 58
mbed_official 174:8bb9f3a33240 59 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 174:8bb9f3a33240 60 switch (direction) {
mbed_official 174:8bb9f3a33240 61 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
mbed_official 174:8bb9f3a33240 62 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
mbed_official 174:8bb9f3a33240 63 }
mbed_official 174:8bb9f3a33240 64 }