mirror of https://github.com/ARMmbed/mbed-os.git
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/* mbed Microcontroller Library
|
|
* Copyright (c) 2019, Arm Limited and affiliates.
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "port_api.h"
|
|
#include "gpio_api.h"
|
|
|
|
#if DEVICE_PORTIN || DEVICE_PORTOUT
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
|
|
{
|
|
gpio_t gpio;
|
|
for (uint8_t pin = 0; pin < 8; pin++) {
|
|
if ((1 << pin) & mask) {
|
|
gpio_init(&gpio, port_pin(port, pin));
|
|
gpio_dir(&gpio, dir);
|
|
}
|
|
}
|
|
obj->port = port;
|
|
obj->mask = mask;
|
|
obj->drive_mode = gpio.drive_mode;
|
|
obj->direction = gpio.direction;
|
|
}
|
|
|
|
void port_mode(port_t *obj, PinMode mode)
|
|
{
|
|
gpio_t gpio = {.direction = obj->direction, .drive_mode = obj->drive_mode};
|
|
for (uint8_t pin = 0; pin < 8; pin++) {
|
|
if ((1 << pin) & obj->mask) {
|
|
gpio.pin = port_pin(obj->port, pin);
|
|
gpio_mode(&gpio, mode);
|
|
}
|
|
}
|
|
}
|
|
|
|
void port_dir(port_t *obj, PinDirection dir)
|
|
{
|
|
gpio_t gpio = {.direction = obj->direction, .drive_mode = obj->drive_mode};
|
|
for (uint8_t pin = 0; pin < 8; pin++) {
|
|
if ((1 << pin) & obj->mask) {
|
|
gpio.pin = port_pin(obj->port, pin);
|
|
gpio_dir(&gpio, dir);
|
|
}
|
|
}
|
|
}
|
|
|
|
void port_write(port_t *obj, int value)
|
|
{
|
|
GPIO_PRT_Type *port_type = Cy_GPIO_PortToAddr(obj->port);
|
|
if (obj->mask == 0xff) {
|
|
// Optimization for when all pins on the port is used.
|
|
port_type->OUT = value;
|
|
} else {
|
|
port_type->OUT_SET = value & obj->mask;
|
|
port_type->OUT_CLR = (~value) & obj->mask;
|
|
}
|
|
}
|
|
|
|
int port_read(port_t *obj)
|
|
{
|
|
return Cy_GPIO_PortToAddr(obj->port)->IN & obj->mask;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif
|