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mbed SDK library sources

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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.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

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_NXP/TARGET_LPC408X/port_api.c@34:a3c7023e45de, 2013-10-11 (annotated)

Committer:
mbed_official
Date:
Fri Oct 11 13:30:08 2013 +0100
Revision:
34:a3c7023e45de
Parent:
15:4892fe388435 
Synchronized with git revision eaafc74ae29c565a716b8c5f9d5899ef7d680b8b

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 15:4892fe388435 1 /* mbed Microcontroller Library
bogdanm 15:4892fe388435 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 15:4892fe388435 3 *
bogdanm 15:4892fe388435 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 15:4892fe388435 5 * you may not use this file except in compliance with the License.
bogdanm 15:4892fe388435 6 * You may obtain a copy of the License at
bogdanm 15:4892fe388435 7 *
bogdanm 15:4892fe388435 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 15:4892fe388435 9 *
bogdanm 15:4892fe388435 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 15:4892fe388435 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 15:4892fe388435 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 15:4892fe388435 13 * See the License for the specific language governing permissions and
bogdanm 15:4892fe388435 14 * limitations under the License.
bogdanm 15:4892fe388435 15 */
bogdanm 15:4892fe388435 16 #include "port_api.h"
bogdanm 15:4892fe388435 17 #include "pinmap.h"
bogdanm 15:4892fe388435 18 #include "gpio_api.h"
bogdanm 15:4892fe388435 19
mbed_official 34:a3c7023e45de 20
bogdanm 15:4892fe388435 21 PinName port_pin(PortName port, int pin_n) {
mbed_official 34:a3c7023e45de 22 return (PinName)(((port << PORT_SHIFT) | pin_n));
bogdanm 15:4892fe388435 23 }
bogdanm 15:4892fe388435 24
bogdanm 15:4892fe388435 25 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
bogdanm 15:4892fe388435 26 obj->port = port;
bogdanm 15:4892fe388435 27 obj->mask = mask;
bogdanm 15:4892fe388435 28
bogdanm 15:4892fe388435 29 LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *)(LPC_GPIO0_BASE + ((int)port * 0x20));
bogdanm 15:4892fe388435 30
bogdanm 15:4892fe388435 31 port_reg->MASK = ~mask;
bogdanm 15:4892fe388435 32
bogdanm 15:4892fe388435 33 obj->reg_out = &port_reg->PIN;
bogdanm 15:4892fe388435 34 obj->reg_in = &port_reg->PIN;
bogdanm 15:4892fe388435 35 obj->reg_dir = &port_reg->DIR;
bogdanm 15:4892fe388435 36
bogdanm 15:4892fe388435 37 uint32_t i;
bogdanm 15:4892fe388435 38 // The function is set per pin: reuse gpio logic
bogdanm 15:4892fe388435 39 for (i=0; i<32; i++) {
bogdanm 15:4892fe388435 40 if (obj->mask & (1<<i)) {
bogdanm 15:4892fe388435 41 gpio_set(port_pin(obj->port, i));
bogdanm 15:4892fe388435 42 }
bogdanm 15:4892fe388435 43 }
bogdanm 15:4892fe388435 44
bogdanm 15:4892fe388435 45 port_dir(obj, dir);
bogdanm 15:4892fe388435 46 }
bogdanm 15:4892fe388435 47
bogdanm 15:4892fe388435 48 void port_mode(port_t *obj, PinMode mode) {
bogdanm 15:4892fe388435 49 uint32_t i;
bogdanm 15:4892fe388435 50 // The mode is set per pin: reuse pinmap logic
bogdanm 15:4892fe388435 51 for (i=0; i<32; i++) {
bogdanm 15:4892fe388435 52 if (obj->mask & (1<<i)) {
bogdanm 15:4892fe388435 53 pin_mode(port_pin(obj->port, i), mode);
bogdanm 15:4892fe388435 54 }
bogdanm 15:4892fe388435 55 }
bogdanm 15:4892fe388435 56 }
bogdanm 15:4892fe388435 57
bogdanm 15:4892fe388435 58 void port_dir(port_t *obj, PinDirection dir) {
bogdanm 15:4892fe388435 59 switch (dir) {
bogdanm 15:4892fe388435 60 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
bogdanm 15:4892fe388435 61 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
bogdanm 15:4892fe388435 62 }
bogdanm 15:4892fe388435 63 }
bogdanm 15:4892fe388435 64
bogdanm 15:4892fe388435 65 void port_write(port_t *obj, int value) {
bogdanm 15:4892fe388435 66 *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask);
bogdanm 15:4892fe388435 67 }
bogdanm 15:4892fe388435 68
bogdanm 15:4892fe388435 69 int port_read(port_t *obj) {
bogdanm 15:4892fe388435 70 return (*obj->reg_in & obj->mask);
bogdanm 15:4892fe388435 71 }