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targets/TARGET_NUVOTON/TARGET_NANO100/gpio_api.c@182:57724642e740, 2018-02-16 (annotated)

Committer:
AnnaBridge
Date:
Fri Feb 16 16:09:33 2018 +0000
Revision:
182:57724642e740
Parent:
175:b96e65c34a4d 
mbed-dev library. Release version 159.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 175:b96e65c34a4d 1 /* mbed Microcontroller Library
AnnaBridge 175:b96e65c34a4d 2 * Copyright (c) 2015-2017 Nuvoton
AnnaBridge 175:b96e65c34a4d 3 *
AnnaBridge 175:b96e65c34a4d 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 175:b96e65c34a4d 5 * you may not use this file except in compliance with the License.
AnnaBridge 175:b96e65c34a4d 6 * You may obtain a copy of the License at
AnnaBridge 175:b96e65c34a4d 7 *
AnnaBridge 175:b96e65c34a4d 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 175:b96e65c34a4d 9 *
AnnaBridge 175:b96e65c34a4d 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 175:b96e65c34a4d 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 175:b96e65c34a4d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 175:b96e65c34a4d 13 * See the License for the specific language governing permissions and
AnnaBridge 175:b96e65c34a4d 14 * limitations under the License.
AnnaBridge 175:b96e65c34a4d 15 */
AnnaBridge 175:b96e65c34a4d 16
AnnaBridge 175:b96e65c34a4d 17 #include "gpio_api.h"
AnnaBridge 175:b96e65c34a4d 18 #include "mbed_assert.h"
AnnaBridge 175:b96e65c34a4d 19 #include "pinmap.h"
AnnaBridge 175:b96e65c34a4d 20 #include "mbed_error.h"
AnnaBridge 175:b96e65c34a4d 21 #include "PeripheralPins.h"
AnnaBridge 175:b96e65c34a4d 22
AnnaBridge 175:b96e65c34a4d 23 uint32_t gpio_set(PinName pin)
AnnaBridge 175:b96e65c34a4d 24 {
AnnaBridge 175:b96e65c34a4d 25 if (pin == (PinName) NC) {
AnnaBridge 175:b96e65c34a4d 26 return 0;
AnnaBridge 175:b96e65c34a4d 27 }
AnnaBridge 175:b96e65c34a4d 28
AnnaBridge 175:b96e65c34a4d 29 uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
AnnaBridge 175:b96e65c34a4d 30
AnnaBridge 175:b96e65c34a4d 31 // GPIO PinMap
AnnaBridge 175:b96e65c34a4d 32 pin_function(pin, 0 << NU_MFP_POS(pin_index));
AnnaBridge 175:b96e65c34a4d 33
AnnaBridge 175:b96e65c34a4d 34 return (uint32_t)(1 << pin_index); // Return the pin mask
AnnaBridge 175:b96e65c34a4d 35 }
AnnaBridge 175:b96e65c34a4d 36
AnnaBridge 182:57724642e740 37 int gpio_is_connected(const gpio_t *obj)
AnnaBridge 182:57724642e740 38 {
AnnaBridge 182:57724642e740 39 return (obj->pin != (PinName) NC);
AnnaBridge 182:57724642e740 40 }
AnnaBridge 182:57724642e740 41
AnnaBridge 175:b96e65c34a4d 42 void gpio_init(gpio_t *obj, PinName pin)
AnnaBridge 175:b96e65c34a4d 43 {
AnnaBridge 175:b96e65c34a4d 44 obj->pin = pin;
AnnaBridge 175:b96e65c34a4d 45
AnnaBridge 175:b96e65c34a4d 46 if (obj->pin == (PinName) NC) {
AnnaBridge 175:b96e65c34a4d 47 return;
AnnaBridge 175:b96e65c34a4d 48 }
AnnaBridge 175:b96e65c34a4d 49
AnnaBridge 175:b96e65c34a4d 50 obj->mask = gpio_set(pin);
AnnaBridge 175:b96e65c34a4d 51 }
AnnaBridge 175:b96e65c34a4d 52
AnnaBridge 175:b96e65c34a4d 53 void gpio_mode(gpio_t *obj, PinMode mode)
AnnaBridge 175:b96e65c34a4d 54 {
AnnaBridge 175:b96e65c34a4d 55 if (obj->pin == (PinName) NC) {
AnnaBridge 175:b96e65c34a4d 56 return;
AnnaBridge 175:b96e65c34a4d 57 }
AnnaBridge 175:b96e65c34a4d 58
AnnaBridge 175:b96e65c34a4d 59 pin_mode(obj->pin, mode);
AnnaBridge 175:b96e65c34a4d 60 }
AnnaBridge 175:b96e65c34a4d 61
AnnaBridge 175:b96e65c34a4d 62 void gpio_dir(gpio_t *obj, PinDirection direction)
AnnaBridge 175:b96e65c34a4d 63 {
AnnaBridge 175:b96e65c34a4d 64 if (obj->pin == (PinName) NC) {
AnnaBridge 175:b96e65c34a4d 65 return;
AnnaBridge 175:b96e65c34a4d 66 }
AnnaBridge 175:b96e65c34a4d 67
AnnaBridge 175:b96e65c34a4d 68 uint32_t pin_index = NU_PINNAME_TO_PIN(obj->pin);
AnnaBridge 175:b96e65c34a4d 69 uint32_t port_index = NU_PINNAME_TO_PORT(obj->pin);
AnnaBridge 175:b96e65c34a4d 70 GPIO_T *gpio_base = NU_PORT_BASE(port_index);
AnnaBridge 175:b96e65c34a4d 71
AnnaBridge 175:b96e65c34a4d 72 uint32_t mode_intern = GPIO_PMD_INPUT;
AnnaBridge 175:b96e65c34a4d 73
AnnaBridge 175:b96e65c34a4d 74 switch (direction) {
AnnaBridge 175:b96e65c34a4d 75 case PIN_INPUT:
AnnaBridge 175:b96e65c34a4d 76 mode_intern = GPIO_PMD_INPUT;
AnnaBridge 175:b96e65c34a4d 77 break;
AnnaBridge 175:b96e65c34a4d 78
AnnaBridge 175:b96e65c34a4d 79 case PIN_OUTPUT:
AnnaBridge 175:b96e65c34a4d 80 mode_intern = GPIO_PMD_OUTPUT;
AnnaBridge 175:b96e65c34a4d 81 break;
AnnaBridge 175:b96e65c34a4d 82
AnnaBridge 175:b96e65c34a4d 83 default:
AnnaBridge 175:b96e65c34a4d 84 return;
AnnaBridge 175:b96e65c34a4d 85 }
AnnaBridge 175:b96e65c34a4d 86
AnnaBridge 175:b96e65c34a4d 87 GPIO_SetMode(gpio_base, 1 << pin_index, mode_intern);
AnnaBridge 175:b96e65c34a4d 88 }