mirror of https://github.com/ARMmbed/mbed-os.git
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/***************************************************************************//**
|
|
* @file port_api.c
|
|
*******************************************************************************
|
|
* @section License
|
|
* <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
|
|
*******************************************************************************
|
|
*
|
|
* 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 "device.h"
|
|
#if DEVICE_PORTOUT
|
|
|
|
#include "port_api.h"
|
|
#include "pinmap.h"
|
|
#include "gpio_api.h"
|
|
#include "em_gpio.h"
|
|
#include "em_cmu.h"
|
|
|
|
#define PORT_NUM_PINS 16
|
|
|
|
PinName port_pin(PortName port, int pin_n)
|
|
{
|
|
return (PinName) (pin_n | port << 4); // Encode pin and port number in one uint32
|
|
}
|
|
|
|
void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
|
|
{
|
|
obj->mask = mask;
|
|
obj->port = port;
|
|
obj->dir = dir;
|
|
|
|
port_dir(obj, obj->dir);
|
|
}
|
|
|
|
void port_mode(port_t *obj, PinMode mode)
|
|
{
|
|
/* Set mode for pins given by mask */
|
|
uint32_t pin;
|
|
for (pin = 0; pin < PORT_NUM_PINS; pin++) {
|
|
if (obj->mask & (1 << pin)) {
|
|
pin_mode(port_pin(obj->port, pin), mode);
|
|
}
|
|
}
|
|
}
|
|
|
|
void port_dir(port_t *obj, PinDirection dir)
|
|
{
|
|
obj->dir = dir;
|
|
|
|
/* Set default pin mode for pins given by mask */
|
|
switch (dir) {
|
|
case PIN_INPUT:
|
|
port_mode(obj, Input);
|
|
break;
|
|
case PIN_OUTPUT:
|
|
port_mode(obj, PushPull);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void port_write(port_t *obj, int value)
|
|
{
|
|
GPIO_PortOutSetVal(obj->port, value, obj->mask);
|
|
}
|
|
|
|
int port_read(port_t *obj)
|
|
{
|
|
if (obj->dir == PIN_INPUT) {
|
|
return (int) (GPIO_PortInGet(obj->port) & obj->mask);
|
|
} else {
|
|
return (int) (GPIO_PortOutGet(obj->port) & obj->mask);
|
|
}
|
|
}
|
|
|
|
#endif
|