b luo / mbed-dev

mbed library sources. With a patch for the can_api

Fork of mbed-dev by mbed official

targets/TARGET_NXP/TARGET_LPC43XX/gpio_api.c@151:91825d030f9b, 2016-11-14 (annotated)

Committer:
DangerousElectrician
Date:
Mon Nov 14 04:39:23 2016 +0000
Revision:
151:91825d030f9b
Parent:
149:156823d33999 
stuff changed?

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 *
<> 144:ef7eb2e8f9f7 16 * Ported to NXP LPC43XX by Micromint USA <support@micromint.com>
<> 144:ef7eb2e8f9f7 17 */
<> 144:ef7eb2e8f9f7 18 #include "mbed_assert.h"
<> 144:ef7eb2e8f9f7 19 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 20 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 uint32_t gpio_set(PinName pin) {
<> 144:ef7eb2e8f9f7 23 MBED_ASSERT(pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 24 int f = 0;
<> 144:ef7eb2e8f9f7 25 unsigned int port = (unsigned int)MBED_GPIO_PORT(pin);
<> 144:ef7eb2e8f9f7 26
<> 144:ef7eb2e8f9f7 27 f = SCU_PINIO_FAST | ((port > 4) ? (4) : (0));
<> 144:ef7eb2e8f9f7 28 pin_function(pin, f);
<> 144:ef7eb2e8f9f7 29
<> 144:ef7eb2e8f9f7 30 return (1 << ((int)pin & 0x1F));
<> 144:ef7eb2e8f9f7 31 }
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 void gpio_init(gpio_t *obj, PinName pin) {
<> 144:ef7eb2e8f9f7 34 obj->pin = pin;
<> 144:ef7eb2e8f9f7 35 if (pin == (PinName)NC)
<> 144:ef7eb2e8f9f7 36 return;
<> 144:ef7eb2e8f9f7 37
<> 144:ef7eb2e8f9f7 38 obj->mask = gpio_set(pin);
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 LPC_GPIO_T *port_reg = (LPC_GPIO_T *)(LPC_GPIO_PORT_BASE);
<> 144:ef7eb2e8f9f7 41 unsigned int port = (unsigned int)MBED_GPIO_PORT(pin);
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 obj->reg_set = &port_reg->SET[port];
<> 144:ef7eb2e8f9f7 44 obj->reg_clr = &port_reg->CLR[port];
<> 144:ef7eb2e8f9f7 45 obj->reg_in = &port_reg->PIN[port];
<> 144:ef7eb2e8f9f7 46 obj->reg_dir = &port_reg->DIR[port];
<> 144:ef7eb2e8f9f7 47 }
<> 144:ef7eb2e8f9f7 48
<> 144:ef7eb2e8f9f7 49 void gpio_mode(gpio_t *obj, PinMode mode) {
<> 144:ef7eb2e8f9f7 50 pin_mode(obj->pin, mode);
<> 144:ef7eb2e8f9f7 51 }
<> 144:ef7eb2e8f9f7 52
<> 144:ef7eb2e8f9f7 53 void gpio_dir(gpio_t *obj, PinDirection direction) {
<> 144:ef7eb2e8f9f7 54 MBED_ASSERT(obj->pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 55 switch (direction) {
<> 144:ef7eb2e8f9f7 56 case PIN_INPUT :
<> 144:ef7eb2e8f9f7 57 *obj->reg_dir &= ~obj->mask;
<> 144:ef7eb2e8f9f7 58 break;
<> 144:ef7eb2e8f9f7 59 case PIN_OUTPUT:
<> 144:ef7eb2e8f9f7 60 *obj->reg_dir |= obj->mask;
<> 144:ef7eb2e8f9f7 61 break;
<> 144:ef7eb2e8f9f7 62 }
<> 144:ef7eb2e8f9f7 63 }