mirror of https://github.com/ARMmbed/mbed-os.git
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
/* mbed Microcontroller Library
|
|
* Copyright (c) 2015-2016 Nuvoton
|
|
*
|
|
* 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 "gpio_api.h"
|
|
#include "mbed_assert.h"
|
|
#include "pinmap.h"
|
|
#include "mbed_error.h"
|
|
#include "PeripheralPins.h"
|
|
|
|
uint32_t gpio_set(PinName pin)
|
|
{
|
|
if (pin == (PinName) NC) {
|
|
return 0;
|
|
}
|
|
|
|
uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
|
|
|
|
#if 1
|
|
pin_function(pin, 0 << NU_MFP_POS(pin_index));
|
|
#else
|
|
pinmap_pinout(pin, PinMap_GPIO);
|
|
#endif
|
|
|
|
return (uint32_t)(1 << pin_index); // Return the pin mask
|
|
}
|
|
|
|
int gpio_is_connected(const gpio_t *obj)
|
|
{
|
|
return (obj->pin != (PinName) NC);
|
|
}
|
|
|
|
void gpio_init(gpio_t *obj, PinName pin)
|
|
{
|
|
obj->pin = pin;
|
|
|
|
if (obj->pin == (PinName) NC) {
|
|
return;
|
|
}
|
|
|
|
obj->mask = gpio_set(pin);
|
|
}
|
|
|
|
void gpio_mode(gpio_t *obj, PinMode mode)
|
|
{
|
|
if (obj->pin == (PinName) NC) {
|
|
return;
|
|
}
|
|
|
|
pin_mode(obj->pin, mode);
|
|
}
|
|
|
|
void gpio_dir(gpio_t *obj, PinDirection direction)
|
|
{
|
|
if (obj->pin == (PinName) NC) {
|
|
return;
|
|
}
|
|
|
|
uint32_t pin_index = NU_PINNAME_TO_PIN(obj->pin);
|
|
uint32_t port_index = NU_PINNAME_TO_PORT(obj->pin);
|
|
GPIO_T *gpio_base = NU_PORT_BASE(port_index);
|
|
|
|
uint32_t mode_intern = GPIO_MODE_INPUT;
|
|
|
|
switch (direction) {
|
|
case PIN_INPUT:
|
|
mode_intern = GPIO_MODE_INPUT;
|
|
break;
|
|
|
|
case PIN_OUTPUT:
|
|
mode_intern = GPIO_MODE_OUTPUT;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
GPIO_SetMode(gpio_base, 1 << pin_index, mode_intern);
|
|
}
|