lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC43XX/gpio_api.c@294:78f9587bb26d, 2014-08-21 (annotated)

Committer:
mbed_official
Date:
Thu Aug 21 11:00:08 2014 +0100
Revision:
294:78f9587bb26d
Parent:
227:7bd0639b8911 
Synchronized with git revision 5ba8d2a310393df9f8bc08d16bbaec433cdeeba0



Full URL: https://github.com/mbedmicro/mbed/commit/5ba8d2a310393df9f8bc08d16bbaec433cdeeba0/



LPC4330_M4 port_api, us_ticker update

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 20:4263a77256ae 1 /* mbed Microcontroller Library
bogdanm 20:4263a77256ae 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 20:4263a77256ae 3 *
bogdanm 20:4263a77256ae 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 20:4263a77256ae 5 * you may not use this file except in compliance with the License.
bogdanm 20:4263a77256ae 6 * You may obtain a copy of the License at
bogdanm 20:4263a77256ae 7 *
bogdanm 20:4263a77256ae 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 20:4263a77256ae 9 *
bogdanm 20:4263a77256ae 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 20:4263a77256ae 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 20:4263a77256ae 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 20:4263a77256ae 13 * See the License for the specific language governing permissions and
bogdanm 20:4263a77256ae 14 * limitations under the License.
bogdanm 20:4263a77256ae 15 *
bogdanm 20:4263a77256ae 16 * Ported to NXP LPC43XX by Micromint USA <support@micromint.com>
bogdanm 20:4263a77256ae 17 */
mbed_official 227:7bd0639b8911 18 #include "mbed_assert.h"
bogdanm 20:4263a77256ae 19 #include "gpio_api.h"
bogdanm 20:4263a77256ae 20 #include "pinmap.h"
bogdanm 20:4263a77256ae 21
bogdanm 20:4263a77256ae 22 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 23 MBED_ASSERT(pin != (PinName)NC);
bogdanm 20:4263a77256ae 24 int f = 0;
bogdanm 20:4263a77256ae 25 unsigned int port = (unsigned int)MBED_GPIO_PORT(pin);
bogdanm 20:4263a77256ae 26
bogdanm 20:4263a77256ae 27 f = SCU_PINIO_FAST | ((port > 4) ? (4) : (0));
bogdanm 20:4263a77256ae 28 pin_function(pin, f);
bogdanm 20:4263a77256ae 29
bogdanm 20:4263a77256ae 30 return (1 << ((int)pin & 0x1F));
bogdanm 20:4263a77256ae 31 }
bogdanm 20:4263a77256ae 32
mbed_official 113:65a335a675de 33 void gpio_init(gpio_t *obj, PinName pin) {
bogdanm 20:4263a77256ae 34 obj->pin = pin;
mbed_official 227:7bd0639b8911 35 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 36 return;
mbed_official 227:7bd0639b8911 37
bogdanm 20:4263a77256ae 38 obj->mask = gpio_set(pin);
bogdanm 20:4263a77256ae 39
mbed_official 294:78f9587bb26d 40 LPC_GPIO_T *port_reg = (LPC_GPIO_T *)(LPC_GPIO_PORT_BASE);
bogdanm 20:4263a77256ae 41 unsigned int port = (unsigned int)MBED_GPIO_PORT(pin);
bogdanm 20:4263a77256ae 42
bogdanm 20:4263a77256ae 43 obj->reg_set = &port_reg->SET[port];
bogdanm 20:4263a77256ae 44 obj->reg_clr = &port_reg->CLR[port];
bogdanm 20:4263a77256ae 45 obj->reg_in = &port_reg->PIN[port];
bogdanm 20:4263a77256ae 46 obj->reg_dir = &port_reg->DIR[port];
bogdanm 20:4263a77256ae 47 }
bogdanm 20:4263a77256ae 48
bogdanm 20:4263a77256ae 49 void gpio_mode(gpio_t *obj, PinMode mode) {
bogdanm 20:4263a77256ae 50 pin_mode(obj->pin, mode);
bogdanm 20:4263a77256ae 51 }
bogdanm 20:4263a77256ae 52
bogdanm 20:4263a77256ae 53 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 227:7bd0639b8911 54 MBED_ASSERT(obj->pin != (PinName)NC);
bogdanm 20:4263a77256ae 55 switch (direction) {
mbed_official 227:7bd0639b8911 56 case PIN_INPUT :
mbed_official 227:7bd0639b8911 57 *obj->reg_dir &= ~obj->mask;
mbed_official 227:7bd0639b8911 58 break;
mbed_official 227:7bd0639b8911 59 case PIN_OUTPUT:
mbed_official 294:78f9587bb26d 60 *obj->reg_dir |= obj->mask;
mbed_official 227:7bd0639b8911 61 break;
bogdanm 20:4263a77256ae 62 }
bogdanm 20:4263a77256ae 63 }