1 /* mbed Microcontroller Library
2 * Copyright (c) 2006-2013 ARM Limited
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #if DEVICE_PORTIN || DEVICE_PORTOUT
23 PinName port_pin(PortName port, int pin_n) {
24 return (PinName)((port << GPIO_PORT_SHIFT) | pin_n);
27 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
31 // The function is set per pin: reuse gpio logic
32 for (uint32_t i = 0; i < 32; i++) {
33 if (obj->mask & (1 << i)) {
34 gpio_set(port_pin(obj->port, i));
41 void port_mode(port_t *obj, PinMode mode) {
43 // The mode is set per pin: reuse pinmap logic
44 for (uint32_t i = 0; i < 32; i++) {
45 if (obj->mask & (1 << i)) {
46 pin_mode(port_pin(obj->port, i), mode);
51 void port_dir(port_t *obj, PinDirection dir) {
52 uint32_t port_addrs[] = PORT_BASE_ADDRS;
53 uint32_t direction = GPIO_HAL_GetPortDir(port_addrs[obj->port]);
56 direction &= ~obj->mask;
57 GPIO_HAL_SetPortDir(port_addrs[obj->port], direction);
60 direction |= obj->mask;
61 GPIO_HAL_SetPortDir(port_addrs[obj->port], direction);
66 void port_write(port_t *obj, int value) {
67 uint32_t port_addrs[] = PORT_BASE_ADDRS;
68 uint32_t input = GPIO_HAL_ReadPortInput(port_addrs[obj->port]) & ~obj->mask;
69 GPIO_HAL_WritePortOutput(port_addrs[obj->port], input | (uint32_t)(value & obj->mask));
72 int port_read(port_t *obj) {
73 uint32_t port_addrs[] = PORT_BASE_ADDRS;
74 return (int)(GPIO_HAL_ReadPortInput(port_addrs[obj->port]) & obj->mask);