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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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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_Freescale/TARGET_KL25Z/gpio_api.c@13:0645d8841f51, 2013-08-05 (annotated)

Committer:
bogdanm
Date:
Mon Aug 05 14:12:34 2013 +0300
Revision:
13:0645d8841f51
Update mbed sources to revision 64

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #include "gpio_api.h"
bogdanm 13:0645d8841f51 17 #include "pinmap.h"
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 uint32_t gpio_set(PinName pin) {
bogdanm 13:0645d8841f51 20 pin_function(pin, 1);
bogdanm 13:0645d8841f51 21 return 1 << ((pin & 0x7F) >> 2);
bogdanm 13:0645d8841f51 22 }
bogdanm 13:0645d8841f51 23
bogdanm 13:0645d8841f51 24 void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) {
bogdanm 13:0645d8841f51 25 if(pin == NC) return;
bogdanm 13:0645d8841f51 26
bogdanm 13:0645d8841f51 27 obj->pin = pin;
bogdanm 13:0645d8841f51 28 obj->mask = gpio_set(pin);
bogdanm 13:0645d8841f51 29
bogdanm 13:0645d8841f51 30 unsigned int port = (unsigned int)pin >> PORT_SHIFT;
bogdanm 13:0645d8841f51 31
bogdanm 13:0645d8841f51 32 FGPIO_Type *reg = (FGPIO_Type *)(FPTA_BASE + port * 0x40);
bogdanm 13:0645d8841f51 33 obj->reg_set = &reg->PSOR;
bogdanm 13:0645d8841f51 34 obj->reg_clr = &reg->PCOR;
bogdanm 13:0645d8841f51 35 obj->reg_in = &reg->PDIR;
bogdanm 13:0645d8841f51 36 obj->reg_dir = &reg->PDDR;
bogdanm 13:0645d8841f51 37
bogdanm 13:0645d8841f51 38 gpio_dir(obj, direction);
bogdanm 13:0645d8841f51 39 switch (direction) {
bogdanm 13:0645d8841f51 40 case PIN_OUTPUT: pin_mode(pin, PullNone); break;
bogdanm 13:0645d8841f51 41 case PIN_INPUT : pin_mode(pin, PullUp); break;
bogdanm 13:0645d8841f51 42 }
bogdanm 13:0645d8841f51 43 }
bogdanm 13:0645d8841f51 44
bogdanm 13:0645d8841f51 45 void gpio_mode(gpio_t *obj, PinMode mode) {
bogdanm 13:0645d8841f51 46 pin_mode(obj->pin, mode);
bogdanm 13:0645d8841f51 47 }
bogdanm 13:0645d8841f51 48
bogdanm 13:0645d8841f51 49 void gpio_dir(gpio_t *obj, PinDirection direction) {
bogdanm 13:0645d8841f51 50 switch (direction) {
bogdanm 13:0645d8841f51 51 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
bogdanm 13:0645d8841f51 52 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
bogdanm 13:0645d8841f51 53 }
bogdanm 13:0645d8841f51 54 }