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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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

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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_NXP/TARGET_LPC176X/port_api.c@440:8a0b45cd594f, 2014-12-16 (annotated)

Committer:
mbed_official
Date:
Tue Dec 16 08:15:08 2014 +0000
Revision:
440:8a0b45cd594f
Parent:
13:0645d8841f51 
Synchronized with git revision 67fbbf0b635d0c0d93fbe433306c537c2ad206aa



Full URL: https://github.com/mbedmicro/mbed/commit/67fbbf0b635d0c0d93fbe433306c537c2ad206aa/



Targets: nrf51 - updating app_timer.c from Norid'c SDKv7.1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
emilmont 10:3bc89ef62ce7 16 #include "port_api.h"
emilmont 10:3bc89ef62ce7 17 #include "pinmap.h"
emilmont 10:3bc89ef62ce7 18 #include "gpio_api.h"
emilmont 10:3bc89ef62ce7 19
emilmont 10:3bc89ef62ce7 20 PinName port_pin(PortName port, int pin_n) {
emilmont 10:3bc89ef62ce7 21 return (PinName)(LPC_GPIO0_BASE + ((port << PORT_SHIFT) | pin_n));
emilmont 10:3bc89ef62ce7 22 }
emilmont 10:3bc89ef62ce7 23
emilmont 10:3bc89ef62ce7 24 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
emilmont 10:3bc89ef62ce7 25 obj->port = port;
emilmont 10:3bc89ef62ce7 26 obj->mask = mask;
emilmont 10:3bc89ef62ce7 27
emilmont 10:3bc89ef62ce7 28 LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *)(LPC_GPIO0_BASE + ((int)port * 0x20));
emilmont 10:3bc89ef62ce7 29
emilmont 10:3bc89ef62ce7 30 // Do not use masking, because it prevents the use of the unmasked pins
emilmont 10:3bc89ef62ce7 31 // port_reg->FIOMASK = ~mask;
emilmont 10:3bc89ef62ce7 32
emilmont 10:3bc89ef62ce7 33 obj->reg_out = &port_reg->FIOPIN;
emilmont 10:3bc89ef62ce7 34 obj->reg_in = &port_reg->FIOPIN;
emilmont 10:3bc89ef62ce7 35 obj->reg_dir = &port_reg->FIODIR;
emilmont 10:3bc89ef62ce7 36
emilmont 10:3bc89ef62ce7 37 uint32_t i;
emilmont 10:3bc89ef62ce7 38 // The function is set per pin: reuse gpio logic
emilmont 10:3bc89ef62ce7 39 for (i=0; i<32; i++) {
emilmont 10:3bc89ef62ce7 40 if (obj->mask & (1<<i)) {
emilmont 10:3bc89ef62ce7 41 gpio_set(port_pin(obj->port, i));
emilmont 10:3bc89ef62ce7 42 }
emilmont 10:3bc89ef62ce7 43 }
emilmont 10:3bc89ef62ce7 44
emilmont 10:3bc89ef62ce7 45 port_dir(obj, dir);
emilmont 10:3bc89ef62ce7 46 }
emilmont 10:3bc89ef62ce7 47
emilmont 10:3bc89ef62ce7 48 void port_mode(port_t *obj, PinMode mode) {
emilmont 10:3bc89ef62ce7 49 uint32_t i;
emilmont 10:3bc89ef62ce7 50 // The mode is set per pin: reuse pinmap logic
emilmont 10:3bc89ef62ce7 51 for (i=0; i<32; i++) {
emilmont 10:3bc89ef62ce7 52 if (obj->mask & (1<<i)) {
emilmont 10:3bc89ef62ce7 53 pin_mode(port_pin(obj->port, i), mode);
emilmont 10:3bc89ef62ce7 54 }
emilmont 10:3bc89ef62ce7 55 }
emilmont 10:3bc89ef62ce7 56 }
emilmont 10:3bc89ef62ce7 57
emilmont 10:3bc89ef62ce7 58 void port_dir(port_t *obj, PinDirection dir) {
emilmont 10:3bc89ef62ce7 59 switch (dir) {
emilmont 10:3bc89ef62ce7 60 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
emilmont 10:3bc89ef62ce7 61 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
emilmont 10:3bc89ef62ce7 62 }
emilmont 10:3bc89ef62ce7 63 }
emilmont 10:3bc89ef62ce7 64
emilmont 10:3bc89ef62ce7 65 void port_write(port_t *obj, int value) {
emilmont 10:3bc89ef62ce7 66 *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask);
emilmont 10:3bc89ef62ce7 67 }
emilmont 10:3bc89ef62ce7 68
emilmont 10:3bc89ef62ce7 69 int port_read(port_t *obj) {
emilmont 10:3bc89ef62ce7 70 return (*obj->reg_in & obj->mask);
emilmont 10:3bc89ef62ce7 71 }