shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/gpio_api.c@113:65a335a675de, 2014-03-10 (annotated)

Committer:
mbed_official
Date:
Mon Mar 10 11:30:07 2014 +0000
Revision:
113:65a335a675de
Parent:
45:70eead282f0a
Child:
227:7bd0639b8911
Synchronized with git revision 423ddcb86e83e2e0d599ca7106d436eb3c47e6dd



Full URL: https://github.com/mbedmicro/mbed/commit/423ddcb86e83e2e0d599ca7106d436eb3c47e6dd/



proposed change of gpio_api (new update pull request)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 30:91c1d09ada54 1 /* mbed Microcontroller Library
mbed_official 30:91c1d09ada54 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 30:91c1d09ada54 3 *
mbed_official 30:91c1d09ada54 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 30:91c1d09ada54 5 * you may not use this file except in compliance with the License.
mbed_official 30:91c1d09ada54 6 * You may obtain a copy of the License at
mbed_official 30:91c1d09ada54 7 *
mbed_official 30:91c1d09ada54 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 30:91c1d09ada54 9 *
mbed_official 30:91c1d09ada54 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 30:91c1d09ada54 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 30:91c1d09ada54 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 30:91c1d09ada54 13 * See the License for the specific language governing permissions and
mbed_official 30:91c1d09ada54 14 * limitations under the License.
mbed_official 30:91c1d09ada54 15 */
mbed_official 30:91c1d09ada54 16 #include "gpio_api.h"
mbed_official 30:91c1d09ada54 17 #include "pinmap.h"
mbed_official 30:91c1d09ada54 18 #include "reserved_pins.h"
mbed_official 30:91c1d09ada54 19
mbed_official 30:91c1d09ada54 20 static const PinName reserved_pins[] = TARGET_RESERVED_PINS;
mbed_official 30:91c1d09ada54 21
mbed_official 30:91c1d09ada54 22 uint32_t gpio_set(PinName pin) {
mbed_official 30:91c1d09ada54 23 // PIO default value of following ports are not same as others
mbed_official 30:91c1d09ada54 24 unsigned i;
mbed_official 30:91c1d09ada54 25 int f = 0;
mbed_official 30:91c1d09ada54 26
mbed_official 45:70eead282f0a 27 for (i = 0; i < sizeof(reserved_pins) / sizeof(PinName); i ++)
mbed_official 30:91c1d09ada54 28 if (pin == reserved_pins[i]) {
mbed_official 30:91c1d09ada54 29 f = 1;
mbed_official 30:91c1d09ada54 30 break;
mbed_official 30:91c1d09ada54 31 }
mbed_official 30:91c1d09ada54 32
mbed_official 30:91c1d09ada54 33 pin_function(pin, f);
mbed_official 30:91c1d09ada54 34 return ((pin & 0x0F00) >> 8);
mbed_official 30:91c1d09ada54 35 }
mbed_official 30:91c1d09ada54 36
mbed_official 113:65a335a675de 37 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 30:91c1d09ada54 38 if(pin == NC) return;
mbed_official 30:91c1d09ada54 39
mbed_official 30:91c1d09ada54 40 obj->pin = pin;
mbed_official 30:91c1d09ada54 41 LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (((pin & 0xF000) >> PORT_SHIFT) * 0x10000)));
mbed_official 30:91c1d09ada54 42
mbed_official 30:91c1d09ada54 43 obj->reg_mask_read = &port_reg->MASKED_ACCESS[1 << gpio_set(pin)];
mbed_official 30:91c1d09ada54 44 obj->reg_dir = &port_reg->DIR;
mbed_official 30:91c1d09ada54 45 obj->reg_write = &port_reg->DATA;
mbed_official 30:91c1d09ada54 46 }
mbed_official 30:91c1d09ada54 47
mbed_official 30:91c1d09ada54 48 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 30:91c1d09ada54 49 pin_mode(obj->pin, mode);
mbed_official 30:91c1d09ada54 50 }
mbed_official 30:91c1d09ada54 51
mbed_official 30:91c1d09ada54 52 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 30:91c1d09ada54 53 int pin_number = ((obj->pin & 0x0F00) >> 8);
mbed_official 30:91c1d09ada54 54 switch (direction) {
mbed_official 30:91c1d09ada54 55 case PIN_INPUT : *obj->reg_dir &= ~(1 << pin_number); break;
mbed_official 30:91c1d09ada54 56 case PIN_OUTPUT: *obj->reg_dir |= (1 << pin_number); break;
mbed_official 30:91c1d09ada54 57 }
mbed_official 30:91c1d09ada54 58 }