Janek Mann / mbed-src-openwear

mbed library sources modified for open wear

Dependents:   openwear-lifelogger-example

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC43XX/port_api.c@20:4263a77256ae, 2013-09-10 (annotated)

Committer:
bogdanm
Date:
Tue Sep 10 15:14:19 2013 +0300
Revision:
20:4263a77256ae
Child:
295:78f9587bb26d
Sync with git revision 171dda705c947bf910926a0b73d6a4797802554d

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 */
bogdanm 20:4263a77256ae 18 #include "port_api.h"
bogdanm 20:4263a77256ae 19 #include "pinmap.h"
bogdanm 20:4263a77256ae 20 #include "gpio_api.h"
bogdanm 20:4263a77256ae 21
bogdanm 20:4263a77256ae 22 PinName port_pin(PortName port, int pin_n) {
bogdanm 20:4263a77256ae 23 return (PinName)(LPC_GPIO_PORT_BASE + ((port << PORT_SHIFT) | pin_n));
bogdanm 20:4263a77256ae 24 }
bogdanm 20:4263a77256ae 25
bogdanm 20:4263a77256ae 26 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
bogdanm 20:4263a77256ae 27 obj->port = port;
bogdanm 20:4263a77256ae 28 obj->mask = mask;
bogdanm 20:4263a77256ae 29
bogdanm 20:4263a77256ae 30 LPC_GPIO_T *port_reg = (LPC_GPIO_T *)(LPC_GPIO_PORT_BASE + ((int)port << PORT_SHIFT));
bogdanm 20:4263a77256ae 31
bogdanm 20:4263a77256ae 32 port_reg->MASK[port] = ~mask;
bogdanm 20:4263a77256ae 33
bogdanm 20:4263a77256ae 34 obj->reg_out = &port_reg->PIN[port];
bogdanm 20:4263a77256ae 35 obj->reg_in = &port_reg->PIN[port];
bogdanm 20:4263a77256ae 36 obj->reg_dir = &port_reg->DIR[port];
bogdanm 20:4263a77256ae 37
bogdanm 20:4263a77256ae 38 uint32_t i;
bogdanm 20:4263a77256ae 39 // The function is set per pin: reuse gpio logic
bogdanm 20:4263a77256ae 40 for (i=0; i<32; i++) {
bogdanm 20:4263a77256ae 41 if (obj->mask & (1<<i)) {
bogdanm 20:4263a77256ae 42 gpio_set(port_pin(obj->port, i));
bogdanm 20:4263a77256ae 43 }
bogdanm 20:4263a77256ae 44 }
bogdanm 20:4263a77256ae 45
bogdanm 20:4263a77256ae 46 port_dir(obj, dir);
bogdanm 20:4263a77256ae 47 }
bogdanm 20:4263a77256ae 48
bogdanm 20:4263a77256ae 49 void port_mode(port_t *obj, PinMode mode) {
bogdanm 20:4263a77256ae 50 uint32_t i;
bogdanm 20:4263a77256ae 51 // The mode is set per pin: reuse pinmap logic
bogdanm 20:4263a77256ae 52 for (i=0; i<32; i++) {
bogdanm 20:4263a77256ae 53 if (obj->mask & (1<<i)) {
bogdanm 20:4263a77256ae 54 pin_mode(port_pin(obj->port, i), mode);
bogdanm 20:4263a77256ae 55 }
bogdanm 20:4263a77256ae 56 }
bogdanm 20:4263a77256ae 57 }
bogdanm 20:4263a77256ae 58
bogdanm 20:4263a77256ae 59 void port_dir(port_t *obj, PinDirection dir) {
bogdanm 20:4263a77256ae 60 switch (dir) {
bogdanm 20:4263a77256ae 61 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
bogdanm 20:4263a77256ae 62 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
bogdanm 20:4263a77256ae 63 }
bogdanm 20:4263a77256ae 64 }
bogdanm 20:4263a77256ae 65
bogdanm 20:4263a77256ae 66 void port_write(port_t *obj, int value) {
bogdanm 20:4263a77256ae 67 *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask);
bogdanm 20:4263a77256ae 68 }
bogdanm 20:4263a77256ae 69
bogdanm 20:4263a77256ae 70 int port_read(port_t *obj) {
bogdanm 20:4263a77256ae 71 return (*obj->reg_in & obj->mask);
bogdanm 20:4263a77256ae 72 }